Cabinet of Ministers Regulations No. 39 in Riga 2009 January 13 (pr. 17. § 3) building energy efficiency calculation method is Issued in accordance with the law of the energy performance of buildings 9. the second paragraph of article 1 General questions 1. determines the calculation of the energy performance of the building method. 2. The terms used in the following terms: 2.1 heating and cooling energy needs – the calculated energy heating or cooling system to be delivered in or must be evacuated from the conditioned space, to maintain the desired temperature for a given period, without taking into account the building's technical systems;
2.2. the heating or cooling season-period of the year when heating or cooling is used to a certain amount of power;
2.3. building energy efficiency calculated the energy efficiency assessment-assessment carried out on the basis of calculations of the energy consumption of building heating, cooling, ventilation, hot water and lighting needs;
2.4. the gross calorific value-the amount of heat content of the fuel quantities used in some unit when it is completely burnt. The higher heating value of fuels defined in annex 1 of these rules;
2.5. calculation of model-building mathematical model of the building used for the calculation of energy consumption;
2.6. the exported energy – energy, expressed in energonesējo, which supplies the building through a system border and used beyond the boundaries of a system;
2.7. energonesēj-substance or natural phenomenon, used for the production of heat and mechanical work, physical or chemical process;
2.8. inner heat loss and gain-heat that the building creates the building's occupants (metabolic heat) and devices such as lighting, household appliances, Office equipment;
2.9. building the measured energy efficiency energy efficiency assessment-assessment carried out on the basis of energy delivered and exported quantities measured;
2.10. conditioned space-part of a building that is blazing or chilled;
2.11. the conditioned area, air-conditioned rooms with a particular set of temperature controlled heating system, cooling or ventilation system;
2.12. carbon dioxide (CO2) emission factor, carbon dioxide (CO2) that is output into the atmosphere per unit of energy delivered. Carbon dioxide (CO2) emission factor including all carbon dioxide (CO2) emissions, which are linked to the building's primary energy consumed;
2.13. additional energy — electricity, used for heating, hot water supply, air-conditioning, ventilation and lighting systems to produce and convert the energy net energy delivered, such as fans, pumps, electronics. The energy that is produced, there is no additional energy;
2.14. the delivered energy, total energy, expressed energonesējo that is delivered to the building's technical systems through the boundary of the system, to ensure the necessary energy (such as heating, hot water, cooling, ventilation, lighting, devices) or to generate electricity. Energy supplied according to specific energy use can be calculated or measured;
2.15. heat gain-heat, which occurs in the conditioned space inside or is forced into it from another heat source and is the energy used for heating, cooling or centralised preparation of hot water. Heat gains include internal heat gain and solar heat gain;
2.16. system boundary-boundary, which includes all the building-related areas (inside and outside of the building), where the energy is consumed or produced;
2.17. system heat loss-heat loss from the building's technical system that does not participate in the life of the system return. System losses may become the building's internal heat gains, if they are recoverable. The heat recovered, no heat loss, but the benefits of thermal energy;
2.18. solar heat gains, heat, solar radiation, entering the building through Windows directly or indirectly (by absorption of building elements) through solid walls and roofs or passive solar construction of use (for example, winter gardens, translucent insulation). The use of active solar devices (for example, solar collectors) is building the technical part of the system;
2.19. space heating-heat delivery process to ensure thermal comfort;
2.20. cooling-heat discharge process to ensure thermal comfort. 2. assessment of the energy performance of the building included in the building's technical systems 3 efficiency assessment. building, in determining annual energy consumption, building technical systems: 3.1 heating;
3.2. hot water supply;
3.3. air conditioning;
3.4 ventilation;

3.5. lighting. 4. Building energy consumption assessment includes additional energy supplies and building technical systems energy losses. 5. The building's lighting system energy consumption is taken into account in public buildings, but does not take account of residential buildings. 3. assessment of the energy performance of Buildings within the energy efficiency of buildings 6. boundaries of the assessment determined before the commencement of the assessment. System boundary is associated with a priceless object (such as a building, part of the building, the apartment) and includes all indoor and outdoor areas that are related to the building where energy is produced or consumed. Within the framework of the system of calculation of losses in detail, but outside the boundaries of the system is calculated using the conversion factors. Building energy efficiency rating and energy flow diagram given in annex 2 to these regulations. 7. Power can be imported or exported through the building. If the system installation (for example, boiler, chiller, cooling tower) is located outside the boundaries of the building structures, energonesēj consumption (such as gas, electricity, heat, water) is determined using the meter. 8. limit of energonesēj Buildings (gas, electricity, heating and water) has a counter, the liquid and solid energy-storage system. If part of the building's technical systems (e.g., boiler, chiller, cooling tower) are located outside the boundaries of the building structures, consider that they located inside the boundaries, and the loss of the system concerned is taken into account. 9. active solar, wind and water energy are not the building's energy balance. Energy balance include energy delivered by the energy consumption of buildings, equipment and additional energy required to deliver building energy from heat sources (such as solar collector). 4. building energy efficiency assessment measured 4.1 General requirements the evaluation period 10. energy consumption for all energonesēj must be assessed in the same time period. 11. evaluation period is the full number of years. If the evaluation period is not the full number of years, the annual energy consumption is obtained by using the method of extrapolation. 12. If the assessment period is shorter than five years, made to weather extended correction. 13. the evaluation period of the building must not make changes that affect energy efficiency. If any changes were made, the above findings are not to be used for assessing the energy performance of the building. 4.2. data acquisition and correction (extrapolation) 4.2.1. With meter energonesēj listed 14. With meter energonesēj listed (electricity, gas, warm energy of) consumption is the difference between the two readings of the meter reading assessment at the beginning and end of the period. 15. Electricity, gas and heat supplier or building operator invoices can be used to evaluate the energonesēj consumption (evaluation period-full years). 16. If energonesēj is used in multiple technical systems and multiple uses, energonesēj consumption divided by technical systems and goals. 4.2.2. Liquid fuel tanks 17. Heating Oil level in the tank is measured assessment at the beginning and end of the period, using a calibrated scale. Heating oil consumption in the period of the assessment is the assessment of the tank contents at the beginning of the period, minus any content of the tank at the end of the period of the assessment and evaluation period plus the quantity of fuel purchased. 18. If the gas balloons, delivered fuel valued by adding the number of the cylinder used (take into account the volume of the cylinder). 19. If the burner works with a fixed capacity (without modulation) and is equipped with a burning time of the meter, fuel consumption is the difference between the two readings, made the assessment at the beginning and end of the period, multiplied by the flow rate of the burner. The flow rate is measured before the first aspirate reading and after each burner adjustment or cleaning. 20. the amount of energy consumed is determined by multiplying the quantity in the waste liquid fuels with a gross calorific value. 4.2.3.21. Solid fuels solid fuels (e.g. coal, wood) energy content depends on its quality and density. Solid fuel consumption is the fuel mass inventory assessment at the beginning of the period, minus the mass of the fuel stocks for the end of the period of assessment and evaluation period purchased plus the fuel mass. 22. the amount of energy consumed is determined by multiplying the quantity in the solid fuel used by its gross calorific value. 23. for solid fuels, the measured volume of the mass multiplied by the density of the fuel. Calculating confidence intervals in mass, density and moisture must be taken into account for uncertainty. 4.2.4. Energonesēj consumption, if the installation of a constant average power, and energonesēj in the heating and cooling Energonesēj 24, used if the average power of the machine is a constant, linear extrapolation is, and their quantity is calculated using the following formula: E = tkop Eper (1), where: E-corrected tper energonesēj quantity (kg, m3 or Wh); EPER-energonesēj quantity that is consumed by the energonesēj accounting period (kg, m3 or Wh); -evaluation period tkop (year or season); tper-energonesēj accounting period (year or season).
25. Energonesēj, which are used for heating or cooling, the extrapolation made using energy accounting or simplify the calculation under paragraph 27 of these regulations. 26. If the assessment carried out using energy accounting, the assessment period should cover a wide range (at least monthly) average ārgais temperature range. 27. the simplified calculation of extrapolation used to calculate the quantity of energonesēj used for heating or cooling during the entire year. It is calculated using the following formula: = Qkop, Ekop apr Genoa (2), Qnov, April Qkop, April-where: year calculated energy required heating and cooling (who); Qnov, apr-assessment period calculated energy required heating and cooling (who); Enov-energonesēj quantity used in the heating and cooling of the evaluation period (kg, m3, or What).
28. the year calculated energy required heating and cooling Qkop, apr is calculated using the formula (3) and adds a separate heating and cooling energy, calculated by using the formula (4) and (5): Qkop, April QApk, April QDz, = + apr (3): QApk, apr = HK (T1-T2) t-η (AsolEsol + Qieg) (4); QDz, apr = (AsolEsol + Qieg) – ηHK (T1-T2) t (5): QApk, April – the energy required for heating (Wh); QDz, apr – required cooling power (who); HK-building the overall heat loss factor, which is determined in accordance with this provision, paragraph 120 (W/c); t-assessment period, one full season of heating or cooling; T1-heating or cooling setpoint temperature average building (oC); T2 – the average temperature of the calculation period ārgais (c); η-benefit ratio for the use in accordance with LVS EN ISO 13790:2008 "energy efficiency of buildings. Space heating and cooling energy calculation "(hereinafter LVS EN ISO 13790:2008); Asol-all building useful solar energy savācoš area (m2); ESOL-solar radiation for time period t to the Asol (W/m2); -All the buildings internal Qieg benefits assessment period (t, Wh).
4.3. Energy consumption adjustment because of the weather, 29. If the measured energy efficiency assessment is based on the energy consumption data obtained from the period, which is less than five full years, the required measured power consumption adjustment because of the weather, to ensure measurement period in compliance with the energy consumed by the average local weather. 30. The measured energy consumption for heating and cooling medium adapted to weather the building location. Power adjustment according to the weather elements used in the Latvian et seq of LBN 002-01 "Būvklimatoloģij" (approved by Cabinet of Ministers of 23 august 2001 Regulation No. 376 of the "rules for the Latvian et seq of LBN 002-01" Būvklimatoloģij "") (hereinafter referred to as "LBN 003-01 Būvklimatoloģij") set out in table 7 the heating period and average temperature values. 31. Power correction due to weather is calculated in accordance with the provisions of paragraph 32 and 33. 32. Power correction using degree days, carried out using the following formula: Q = Q1 GDD1 (6), where: Q-GDD corrected energy consumption (Wh); Q1-energy consumption evaluation period (the who); GDD1-legislative degree days, determined in accordance with paragraph 33 of these rules; GDD-degree days evaluation period, determined in accordance with paragraph 33 of these rules.
33. the degree number of days is determined using the following formula:

33.1. GDD (1) = Dnapk (t1-t2) (7); 33.2. GDD = Dapk (t4-t3) (8): GDD1 – the regulatory degree days; GDD-degree days evaluation period; Dnapk-the number of heating days, regulations under the LBN 003-01 "Būvklimatoloģij"; Dapk – heating days evaluation period. T1-specific legislation or design indoor temperature (° c); T2-the average temperature in accordance with the LBN 003-01 "Būvklimatoloģij" (oC); T3-ārgais temperature measurement period (oC); T4 – indoor temperature (° c) during the period of the evaluation.
5. building energy efficiency calculated assessment 5.1. required and the data obtained 34. building energy efficiency assessment calculated the data obtained: 34.1. surveying the building;
21.3. using legislation and standards in certain characteristics;
3. the technical documentation of the building (such as the technical design, inventory plan). 35. building energy efficiency evaluation of calculated need following data: 21.8. heat transmission and ventilation characteristics;
35.2. heat gains from internal heat resources, solar heat gain;
35.3. klimatoloģisk indicators;
35.4. the buildings and building components, systems and use of the specification;
22.1. the comfort requirements – set temperature and air exchange rates. 36. building technical systems performance evaluation requires the following information: 36.1. building distribution by heat zones (different heat zones can use different technical systems in buildings);
36.2. the buildings heat loss distribution or recovery building (internal heat gains, heat recovery ventilation heat);
36.3. the supply air ventilation rates and temperature if the building centrally or cooled and the fire blazing energy air circulation and cooling or apkurināšan. 37. Using a calculation method retrieves the following data: 37.1. the total energy required heating and cooling;
37.2. the total energy consumption for heating and cooling;
37.3. heating and cooling season duration (hours of operation of the system);
23.2. the additional energy consumption for heating, cooling and ventilation systems. 5.2. building calculated energy efficiency assessment procedure 5.2.1. building heating and cooling energy needs and the performance of 38. energy required is calculated on the basis of building thermal zone heat balance. Heating and cooling energy is necessary for the building's technical systems energy balances baseline data. Making buildings energy efficiency assessment calculated the energy balance in the distribution: 38.1. the energy balance of the building level;
38.2. the energy balance at the level of the system. 39. The calculated energy efficiency assessment indicators required for acquiring the following: 39.1. choose heat balance calculation method in accordance with the provisions of Chapter 5.2.2 below.
24.4. determined the total air-conditioned area and not conditioned space boundaries in accordance with the provisions of this subchapter 5.3;
24.4. determined the boundaries of the zones of calculation in accordance with the provisions of subchapter 5.3;
24.5. the conditions for the calculation defined in the premises, the external climatic and other environmental data;
24.5. the calculation of the building and its individual areas in the energy required for heating and energy Qapk cooling Qdz: 39.5.1 during the period. the calculation heat loss with heat transmission in accordance with the provisions of this subchapter 5.5;
39.5.2. calculation of heat losses through ventilation according to this provision, the bottom section 5.6;
39.5.3. calculation of indoor thermal benefits under this provision the bottom section 5.7;
39.5.4. calculation of solar benefits in accordance with the provisions of subsection 5.8;
39.5.5. calculation of the dynamic parameters in accordance with the provisions of this subchapter 5.9;
24.6. the calculation of the heating and cooling season duration in accordance with the provisions of subchapter 5.4.1. 5.2.2. heat balance calculation method you choose 40. building or the area of the heat balance determination shall take into account: 24.9. transmission of heat flow between conditioned space and the external environment, which is the difference between the current temperature conditioned space and external air temperature;
40.2. transmission and ventilation heat flows between adjacent zones, which is the difference between the current temperature in the air-conditioned area and indoor temperature next to the premises;
40.3. the natural or mechanical ventilation heat flow, which is the difference between the current temperature in the air-conditioned room and supply air temperature;
40.4. internal heat gains (including negative benefits of heat loss), such as people, equipment, lighting, and heat flow or absorption of building technical systems;
25.2. solar thermal benefits that you can get directly (for example, through Windows) or indirectly (for example, with the absorption through the building's elements);
40.6. heat savings building technical systems and depending on the thermal inertia of the building;
40.7. the necessary energy for heating, if the building's technical systems supply heat to raise the temperature to the indoor minimum level requested (the set temperature for heating);
25.4. the necessary energy for cooling if the building cooling system remove heat to decrease the indoor temperature to the maximum requested levels (setpoint temperature for cooling). 41. the energy balance of the building recovered energy also included buildings from different parts of the building's technical systems. 42. The building's energy balance calculation is carried out using one of the following methods: 42.1. smooth method. Heat balance calculation for a long enough period, a month or a full season. The calculation ignores accumulated and played part of the heat, but take into account the dynamic effects, empirically determining the use of benefits and the loss factor;
26.2. the dynamic method. It is used to heat balance calculation of the short period of time (for example, one hour). Take into account the provision of heat and heat from building the last part which depends on the building's thermal inertia. 43. The dynamic model of heat resistance method, heat capacity and internal and solar thermal benefits of building or building areas. Using dynamic method takes into account that heating season excess heat will affect the internal temperature rises above the set temperature, the leftover heat carrying with an additional transmission, ventilation and accumulation, if you do not use the motor cooling. Also turn off the thermostat can not be directly applied to reduce the internal temperature, as it is dependent on the inertia of the building (the building of heat release from masivitāt). Similar assumptions is also used for cooling. 44. with the steady method to take into account the dynamic effects, calculated using the correlation factors. Internal heating and solar heat gain calculation shall take into account the use that only part of the benefit is used, reducing the building's energy needs for heating, if the internal temperature increase above the set temperature. 45. The cooling calculation by using the method even take into account the following factors: 45.1. loss – transmission and ventilation heat loss calculations must take into account that only a part of the transmission and the ventilation heat loss is used, reducing the need for cooling. Unused transmission and ventilation heat flow occurs in periods or intervals (for example, at night), when cooling is not required, but it may be necessary for other periods or intervals (e.g. daily);
45.2. the yield – internal and solar heat gain calculation to take into account that only a part of the internal heat gain and solar heat transmission and compensate for ventilation losses, in accepting a certain maximum indoor temperature. Unused part of the heat contribute to cooling the need to avoid the indoor temperature rises above the set temperature. 5.3. the boundaries and area of the building 5.3.1. Building border and area determination 46. Heating and cooling needed for calculation of energy down the building. Within the building includes all the building elements that are divided into separate air-conditioned rooms or premises affected by external environment conditions (air, soil or water temperature), as well as adjacent buildings not conditioned or separate rooms. 47. Heating and cooling energy required for the calculation of the distribution of buildings: 29.3. in one area;
47.2. in several areas (multizon calculation), taking into account the heat flow between the zones;
47.3. in several areas (multizon calculation), without taking into account the heat flow between the zones. 48. If the building is divided into several zones, building heating and cooling energy is calculated separately for each zone. 5.3.2. building the distribution zones 49. Small (up to five percent of the zone's area) is not heated area (non-conditioned space) can be included in an air-conditioned (heated) and be considered to be conditioned. The building Division of the number of zones is not required when the buildings are ascribed to all of these conditions: 49.1. the setpoint temperature heated spaces no higher than 4 ° c;
30.6. all premises (areas) are not mechanically refrigerated or mechanically cooled and set the temperature difference of cooling the premises does not exceed 4 ° c;
30.6. the rooms use the same heating system (if any) and the same cooling system (if any);

49. the building at least 80 percent of the total floor used the same ventilation system;
30.8. the building at least 80 percent of the total floor ventilation air quantity (m3) rooms on the floor area (m2) and a time unit do not differ by more than four units. 50. If at least one of the terms referred to in paragraph 49 of the cījum is not being run off, the building is divided into zones and each of them is attributed one area calculation conditions. 5.3.3. One area calculation 51. One area in the calculation of the heating temperature set is determined using the following formula: = AaprTuzs the 1990s, DAC Tapk (9), where:-1990s Aapr Tapk setpoint temperature of a building or area heating (° C); Tuzs, DAC-setpoint temperature the heating area, determined in accordance with this rule 5.10. subdivision (° C); Aapr-calculates area, determined in accordance with the provisions of subsection 5.3.5 (m2).
52. One area in the calculation of the cooling temperature set is determined using the following formula: = AaprTuzs, or 1990s Tdz (10), where Tdz 1990s Aapr: – setpoint temperature of a building or area for cooling (° C); Tuzs, dz-setpoint temperature cooling area, determined in accordance with this rule 5.10. subdivision (° C); Aapr-calculates area, determined in accordance with the provisions of subsection 5.3.5 (m2).
5.3.4. Multizon calculation 53. If the building is divided into a number of zones and the heat flow between the zones shall not be taken into account (calculation with a tied zones) through multizon calculation, not be taken into account in any type of heat transmission (e.g., air motion). In this case, the calculations carried out in accordance with the procedure of the calculation of one area. 54. in the Area of parts that have the same heating and cooling system, the required energy for heating and cooling is a separate zone calculated the amount of energy required. Not divided into zones, which have the same heating and cooling system, energy used in the building is a separate zone for the amount of energy used. 55. If the building is divided into a number of zones and the heat flow between the zones take into account in the calculations, the multizon take into account any type of heat transmission (air movement). 5.3.5. the calculation of the detection area 56. Floor area, which is located in the building, is a building in the area of the Aapr is calculated. If the building is divided into zones, the entire area of floor space of the calculated amount must be equal to the estimated floor area of the building. 57. in the area of the Aapr is calculated including: 57.1. all conditioned space;
57.2. not conditioned spaces, if the air temperature in winter varies from ārgais temperatures more than 4 ° c. 58. the calculation area includes everything above a certain area, regardless of whether it is or not conditioned. 5.4. building heating and cooling 5.4.1. building heating and cooling calculation of required energy 59. Heating and cooling calculation is performed in the following order: 59.1. calculation of the duration of the season;
59.2. the necessary energy calculation.
59.3. calculation the possible repetition associated with building and system interaction, or additional information is received. 60. the duration of the heating season shall be determined in accordance with the LBN 003-01 "Būvklimatoloģij". 61. Current heating season will be determined according to the number of hours worked for the season when the system in question (for example, pumps, fans). It shall be based on at least one month for the measurements. 62. the heating season will be determined using the following formula: (11): Lapk-actual heating season duration (number of months); fapk, m – part of the heating season a month.
63. the current cooling season duration is determined according to the number of hours worked for the season when the system in question (for example, pumps, fans). It shall be based on at least one month for the measurements. 64. the cooling season duration is determined using the following formula: (12): Please-the current cooling season duration (number of months); fdz, m – part of the cooling season a month.
5.4.2. The building's heating and cooling needs in the energy calculation using the method even 65. each building in the area of heating energy for each calculation period (month or season) is determined using the following formula (note that Qapk > = 0): Qapk = Qapk, z-Qapk, ηapk, ieg × lit (13), which (for each building and each month or season): Qapk – heating buildings requires energy (Wh); Qapk, z is the total heat loss in the heating portion shall be determined in accordance with the provisions of paragraph 68 (who); Qapk, ieg-total heat yield heating part, determined in accordance with the provisions of paragraph 69 (who); ηapk, ieg-benefit usage factor shall be determined in accordance with the provisions of this subsection 5.9.2.
66. The necessary extra heat energy (humans) are not included in the calculation. 67. the area of each building cooling energy required for each calculation period (month or season) is determined using the following formula (note that Qdz > = 0): Qdz = Qdz, ηdz, × Qdz, ieg z, z (14), which (for each building and each month or season): Qdz – in the energy required for cooling of the building (the who); Qdz, z is the total heat loss in the cooling part, determined in accordance with this rule 68 (who); Qdz, ieg-total heat gain to the cooling part, determined in accordance with the provisions of paragraph 69 (who); ηdz, ieg-benefit usage factor shall be determined in accordance with this provision, the bottom section 5.9.2..
68. The total heat loss in buildings area calculation period: 68.1. heating QApk, z = Sheff Utd + qve (15); 68.2. cooling QDz, z = Sheff Utd + qve (16) (for each building and each month or season): QApk, z is the total heat loss for heating (Wh); QDz, z is the total heat loss in cooling (who); Sheff Utd: total heat loss with the transmission shall be determined in accordance with the provisions of Chapter 5.5 below. (who); Qve-total heat loss with ventilation, shall be determined in accordance with the provisions of this subchapter 5.6 (Wh).
69. The total heat gain of building area calculation period: 69.1. heating QApk = Qiek + Qsol, ieg (17); EB 69.2. cooling QDz = Qiek + Qsol, ieg (18), (for each building and each month or season): QApk, ieg-total benefits of heat for heating (Wh); QDz, ieg-total benefits of heat for cooling (who); Qiek-internal heat gains calculation period, the amount determined in accordance with the provisions of this subchapter 5.7 (who); Qsol-solar heat gain calculation period, the amount determined in accordance with the provisions of subdivisions (who) 5.8.
5.5. transmission of heat loss through a steady 70. method, the total heat loss with transmission calculation each month or season and for each zone by using the following formula: 70.1. heating QApk, pr = 1990s k {HT, k × (T1-T2, DAC, k)} × t (19); 70.2. cooling QDz, pr = 1990s k {HT, k × (T1, T2, or-k)} × t (20) (each building zone z and for each calculation period): QApk, pr-total heat transmission losses for heating (Wh); QDz, pr-the total loss of heat transmission in cooling (who); HT, k – building heat transmission coefficient k of elements to the next through the area, the environment or area with temperature T2, k shall be determined in accordance with this rule 71 (W/c); T1, DAC-part of a building or the heating setpoint temperature shall be determined in accordance with the provisions of subdivision (c) 5.10; T1, or – of a building or part of the cooling setpoint temperature shall be determined in accordance with the provisions of subdivision (c) 5.10; T2, k – next to the temperature of the area element k in the environment or area, shall be determined in accordance with the provisions of paragraph 72 (c); t – calculates the duration of the period, determined in accordance with the provisions of annex 3 (h).
71. heat permeability coefficient k HT, element k shall be determined in accordance with Latvian et seq of LBN 002-01 "delimiting" construction siltumtehnik (approved by Cabinet of Ministers of 27 November 2001, regulations no 495 "rules for the Latvian et seq of LBN 002-01" building construction siltumtehnik "delimiting") (hereinafter referred to as the LBN 002-01). 72. the next area temperature T2, k value determined by the following situations: 72.1. transmission of heat to the surrounding environment-temperature T2, k value is the value of the ambient temperature;
72.2. heat transmission to the adjacent kondicionētaj areas – not to the temperature T2, k value is the value of the ambient temperature;
72.3. heat transmission to the adjacent verandah – heat transmission calculation procedure must be the same as the adjacent kondicionētaj not spaces. The impact of solar radiation in addition to the impact of the Sun the temperature is taken into account in calculating heat gain;
72.4. calculation with connected zones, heat transmission to the adjacent kondicionētaj areas – temperature T2, k value is adjacent to the temperature value of the area;
72.5. calculation with connected zones – heat transmission with other kondicionētaj zones should not be taken into account;
heat transmission through a 72.6 at. soil-temperature T2, k value is ārgais ambient temperature value;
72.7. heat transmission to the adjacent buildings-temperature T2, k value is next to the building's indoor temperature on the basis of the building next to the appropriate data and use;
72.8. heat transmission thermal bridges – calculations carried out in accordance with LVS EN ISO 13790:2008.5.6 heat loss with ventilation 73. Overall heat loss with ventilation of conditioned floor area is calculated for each month or season and for each zone by using the following formula: 73.1. heating QApk, ve = 1990s k {ftHv, k (T1 – T2, delivery, DAC)} × t (21); the cooling of 73.2.

QDz, ve = 1990s k {ftHv, k (T1,-T2, or delivery)} × t (22), which (for each building in the zone z and for each calculation period): QApk, ve – the total heat flow with ventilation heating season (who); QDz, ve – the total heat flow with ventilation cooling season (who); FT-life part of the calculation period (full time, ft = 1); HVE, k – coefficient of heat transmission with air flow ventilation, element k entering an area with delivery temperature T2, delivery, k shall be determined in accordance with the provisions of paragraph 74 (W/K); T1, DAC, of a building or area heating setpoint temperature shall be determined in accordance with the provisions of subdivision (c) 5.10; T1, or – of a building or zone cooling setpoint temperature shall be determined in accordance with the provisions of subdivision (c) 5.10; T2, delivery – element k air supply temperature, including buildings or buildings with ventilation or infiltration of the zone shall be determined in accordance with the provisions of paragraph 74 (c); t – calculates the duration of the period, determined in accordance with the provisions of annex 3 (h).
74. heat transmission coefficient, k Hv with air flow ventilation element k values, or the values of flow qve, k comply with appropriate ventilation system standards EN 15242:2007 "EN building ventilation. Calculation method of air flow (including caursūc) determination in buildings "(EN 15242:2007, EN) and LVS EN 15241:2007" building ventilation. Methods to calculate the ventilation and caursūc of energy loss caused by commercial buildings "(hereinafter EN EN 15241:2007). Individual air supply temperature T2 k, delivery, k value assumes the following: 74.1. ventilation with air infiltration from the outside, the delivery temperature T2, delivery, k value is ārgais temperature value;
74.2. ventilation with air infiltration from neighbouring kondicionētaj areas or not a porch, the delivery temperature T2, delivery, k value is the outdoor ambient temperature value. The impact of solar radiation in addition to the impact of the Sun the temperature is taken into account in calculating heat gain;
46.2. the calculation of ventilation of the States area, which includes the air infiltration from neighbouring kondicionētaj areas, the delivery temperature T2, delivery, k value is the next value in the temperature of the area;
74.4. mechanical ventilation supply temperature T2, delivery, k value is the air delivery temperature value, the air exits from the central air handling equipment and entering a building or building zones, determined in accordance with the standards EN EN EN EN 15242:2007 and 15241:2007;
46.3. If using a centralized piesildīšan or piedzesēšan and energy piesildīšan or to piedzesēšan is calculated separately, the delivery temperature is the temperature at central piesildīšan or piedzesēšan. 75. The ventilation heat loss coefficient for each month or season and for each zone is calculated using the following formula: k = ρacaqv, Hv, k (23): k – heat, Hv transmission ratio with air flow ventilation, element k entering an area with delivery temperature T2, delivery, k shall be determined in accordance with the provisions of paragraph 74 (W/c); qve, k-air flow rate (margin) conditioned areas shall be determined in accordance with the standards EN EN 15241: EN EN 15242:2007 and 2007 (m3/s); ρac-air volume = 0.34 for calorific value (Wh/(m3xoC)).
76. heat recovery in the ārgais calculation temperature T2 change with supply air temperature, which is obtained in accordance with the standards EN EN 15241: EN EN 15242:2007 and 2007.5.7. Internal heat gains 5.7.1. Internal heat gains calculation procedure 77. Internal heat is the heat benefits the benefits of internal heat sources, including negative thermal gains (from the room to the cold source). Internal heat is the heat of any benefits resulting from the internal sources and used for space heating, space cooling, or hot water. 78. Internal heat gains include: 78.1. metabolic heat from the public and dispel the heat of the devices;
78.2. ambient heat from lighting devices;
78.3. heat that spread from the hot water system or absorbed by the hot water system;
78.4. heat that spread from the air conditioning and ventilation systems or absorbed by the heating, air conditioning and ventilation systems;
78.5. heat of process and subjects or to them. 5.7.2. General internal heat gains under the steady and dynamic method 79. According to the uniform method of heat gains from internal sources in a given area of the building in a given month or season is calculated using the following formula: where: Qiek – internal heat gains amount to a certain month or season (who); BL-reducing factor next to the conditioned area with no internal heat source l shall be determined in accordance to the standard LVS EN ISO 13790:2008; Φiek, k – during the average heat flow of the internal heat source (k) shall be determined in accordance with the provisions of paragraph 82 (W); Φiek, no, l-time average heat flux of internal heat sources adjacent to the l not conditioned area, determined in accordance with the provisions of paragraph 82 (W); t-specific month or season's duration shall be determined in accordance with the provisions of annex 3 (h).
80. The adjacent not conditioned space is not conditioned by space outside the heating and cooling energy consumption calculation area borders. If not conditioned area located more than one conditioned, heat flow indicator at the internal heat source l not conditioned room Φiek, no, l must be split by kondicionētaj zones according to conditioned floor area, in accordance with the provisions of subsection 5.3.5. 81. Using dynamic method, heat flows from the internal heat sources in a given area of the building is calculated for each hour, using the following formula: where: Φiek – internal heat gain heat flow amount (W); BL-reducing factor next to the conditioned area with no internal heat source, l according to the EN ISO 13790:2008 EN; Φiek, k – hours of heat flow from the internal heat source (k) shall be determined in accordance with the provisions of this subchapter 5.7.3 (W); Φiek, no, l-hour heat flow from the internal heat source l adjacent not conditioned room shall be determined in accordance with the provisions of paragraph 82 (W).
5.7.3. the benefits of internal heat elements heat 82. losses from internal heat sources in a given building or building area is calculated for each hour, using the following formula: Φiek = Φiek + Φiek + passengers, population, Φiek, apg + Φiek + ADzV + þ, Φiek, Φiek, Proc (26): Φiek – heat flux amount of internal heat sources or URΦiek.nek l Φiek k (W); Φiek, population – heat flow of the population, shall be determined in accordance with this rule 84 (W); Φiek, passenger-heat flow device shall be determined in accordance with the provisions of paragraph 85 (W); Φiek, apg-heat flow from the lighting shall be determined in accordance with the provisions of paragraph 86 (W); Φiek, w-heat flow from a hot water system, shall be determined in accordance with the provisions of paragraph 88 (W); Φiek, ADzV-heat flow from the heating, air conditioning and ventilation systems shall be determined in accordance with the provisions of paragraph 90 (W); Φiek, Proc-heat flow of processes and objects, shall be determined in accordance with the provisions of paragraph (W) 94.
83. The cold source that outputs heat from the building (area), is the heat source with a negative sign. 84. The metabolic heat from the inhabitants of Φiek, the population is calculated using the following formula: Φiek, population = Aapr fiedz qiedz (27), where:-the time during which the population fiedz are located in buildings; qiedz-specific heat input from citizens to the calculated area of the building shall be determined in accordance with the provisions of annex 4 (W/m2); Aapr-calculates area, determined in accordance with the provisions of subsection 5.3.5 (m2).
85. the ambient heat from appliances, passenger Φiek for each building and each calculation period is calculated using the following formula: Φiek, dev = fier qier (28), where: Aapr fiedz – the time when the device is running; qiedz-specific heat input of the devices to the calculated area of the building, which is determined in accordance to annex 4 to these regulations (W/m2); Aapr-calculates area, determined in accordance with the provisions of subsection 5.3.5 (m2).
86. The heat flow values from lighting devices Φiek, apg is the sum of the following: 53.5. heat flux value of luminaires, calculated as part of the energy consumed by lighting systems. The energy consumed by the part that is less than 1, if the suction ventilation allows heat discharged directly from luminaries;
86.2. heat flow value of other light elements, such as decorative lighting, specialty lighting, lighting related to the processes. 87. Heat flux from lamps and other lighting elements, calculated in accordance with the standard EN EN 15193:2008 "energy efficiency of buildings. The energy requirements for lighting "(hereinafter EN EN 15193:2008). 88. heat flow value of hot water supply system in Φiek, þ is the sum of the following:

Φiek, Φiek, þ, þ = + Φiek, þ, another circus (29): Φiek, w-thermal flow of hot water supply system (W); Φiek, þ, circus – the heat flow from a hot water recirculating hot water supply systems shall be determined in accordance with this rule 89 (W); Φiek, Wow, another – the heat flow from a hot water system (except the hot water circulation), determined in accordance with the standard EN EN 15316-3-2:2008 "building heating system. System energoprasīb and efficiency calculation methodology. 3 – part 2: domestic hot water systems: hot water distribution "(EN 15316-3-2 EN: 2008) (W).
89. the flow of Heat from water circulation hot water systems is determined using the following formula: Φiek, þ, þ, qiek, Circus Circus = × Lou, (30), where the Circus: circus-Φiek, þ, heat flow from standing water circulation hot water systems (W); qiek, þ, circus-heat flow from the hot water circulation system to metres in length, shall be determined in accordance with the standard EN EN 15316-3-2:2008 (W/m); Lou, circus-hot water supply system water circulation pipe length in a particular area of the building (m).
90. heat flow value to heating, air conditioning and ventilation systems or from them (scatter) Φiek, ADzV is the sum of the following: Φiek, ADzV = Φiek, Φiek, Or + A + Φiek, V (31): Φiek, ADzV-heat flow from the space heating, air conditioning and ventilation systems (W); Φiek, A – heat flow from the space heating systems shall be determined in accordance with this rule 91 (W); Φiek, Dz-heat flow from the room's air conditioning system, shall be determined in accordance with the provisions of paragraph 92 (W); Φiek, V-heat flow from the ventilation system, shall be determined in accordance with the provisions of paragraph (W) 93.
91. heat flow value of space heating systems, A Φiek consists of building area distributed heat, from advanced power sources (for example, pump, fan, electronic devices) and the heat, which dispersed from the emissions of heating systems, circulation, distribution, storage and production of energy. The value obtained in accordance with the standard EN EN 15316-2-1:2007 "building heating system. System energoprasīb and efficiency calculation methodology. 2 – part 1: space heating emitētājsistēm "(hereinafter referred to as the LVS EN 15316-2-1:2007) and standard EN EN 15316-2-1:2007" building heating system. System energoprasīb and efficiency calculation methodology. 2-part 3: the Siltumsadal network for space heating "(hereinafter EN EN 15316-2-3:2007). 92. heat flow value of air conditioning systems or to the Φiek, Or consists of the heat from the power source (such as a pump, fan, electronic devices) that are dispersed in the building area, and heat that spread of air conditioning system with cold emission circulation, distribution, storage and production of energy. Heat flow value from the air conditioning system or obtained in accordance with the standard EN EN 15243:2007 "building ventilation. Room temperature, as well as siltumslodz and calculating energy buildings with room conditioning systems "(hereinafter EN EN 15243:2007). 93. heat flow value of ventilation system in your building area Φiek, V is the relevant building heat dissipated from the zone ventilation systems. Heat flow value is determined in accordance with the standard EN EN 15243:2007. Supply air dispersed heat includes supply increase in temperature, determined under the relevant air flow and ventilation systems standard EN EN EN EN 15242 15241, or which are not considered internal heat sources. Internal heat from ventilation systems which are not taken into account in determining the supply temperature may include ambient heat from the blower motor. 94. heat of process and subjects or on Φiek, PROC consists of heat from certain processes in the relevant area or on the building and (or) of the items placed in the building area. If the surface temperature of the heat source is close to the room temperature, the heat actually transferred the quantity depends on the heat source and ārgais temperature difference. The following is added to the heat internal heat gains, but the heat transfer must be added to the heat loss of the permeability in accordance with this provision, subsection 5.5. 5.8. Solar Heat gains 5.8.1. Solar thermal conditions calculated 95. energy balance sheet only take account of solar power equipment in the energy supplied and the additional energy required for the administration of the building from heat energy source. 96. heat gain from the sun heat sources comes from solar radiation, which is available in the building's location, as well as from the surface and the area of the savācoš orientation, shading, solar constant permeability and absorption and thermal heat transfer. Factor, which includes the areas of savācoš and savācoš characteristics of the surface area (including shaded effects), there are solar thermal actual savācoš area. 5.8.2. General solar heat gains 97. Thermal benefits of solar building area in a particular month or season is calculated using the following formula: where: Qsol – solar thermal benefits amount in a given month or season (who); BL-reducing factor next to the conditioned area with no internal heat source l shall be determined in accordance with the standard EN ISO 13790:2008 EN; Φsol, k – average heat flux from the Sun the heat source in a given month or k season shall be determined in accordance with the provisions of subdivision (W) 5.8.3.; Φsol, l – the average heat flux from the sun heat sources adjacent to the l not conditioned spaces in a given month or season shall be determined in accordance with the provisions of Chapter 5.8.3. bottom (W); t-specific month or season's duration in hours, determined in accordance with the provisions of this subchapter 5.4.1. and annex 3.
98. Using dynamic method, heat flow from the solar heat sources in a given area of the building is calculated for each hour, using the following formula: where: Φsol-solar heat gain heat flow amount (W); BL-reducing factor next to the existing not conditioned area with solar heat sources l shall be determined in accordance with the standard EN ISO 13790:2008 EN; Φsol, k – hours of heat flow from the solar heat source (k) shall be determined in accordance with the provisions of this subsection 5.8.3 (W); Φsol, l – hours of heat flow from the solar heat source l adjacent not conditioned room shall be determined in accordance with the provisions of subsection (W) 5.8.3.
5.8.3. Solar heat gain elements 99. Sun savācoš areas are glazing external opaque elements of inner porch wall and floor, as well as the wall behind the transparent or translucent insulating covers. Characteristics as a whole depend on climate, weather, and location, such as from the Sun, the relationship between direct and diffuse radiation. 100. the characteristics in General, changing both the hours and the time of year. So you need to choose an appropriate medium and constant values that correspond, for example, a heating, cooling or summer comfort calculation. 101. the flow of Heat from solar heat gains calculation, using the following formula: k = Φsol, Hairdryer, k I, k (34): Φsol, k – solar heat gain through building element k (W); Hairdryer-external obstacles due to the reducing coefficient k effective surface solar savācoš square, determined in accordance with this provision, 107 106 and 109 points; S, k-surface (k) (with a specific orientation and tilt angle) the savācoš area the area concerned shall be determined in accordance with the provisions of paragraph 102 (glazing) and 103 (opaque building elements) (m2); I, k-calculation period in solar radiation received at the surface of savācoš square meters (m2), shall be determined in accordance with the LBN 003-01 "Būvklimatoloģij" (W/m2).
102. the construction of the Glazed delimiting element (such as) the effective area is: savācoš, k = the hair dryer, g, gg (1-FF) Al, p (35): As, k – the effective element the glazed area (m2) savācoš; Hairdryer, g-factor by reducing shading to portability conditions shall be determined in accordance with the provisions of paragraph 104; GG-common element transparent parts of the solar energy transmittance, determined in accordance with annex 5 of these rules (the transparent part can consist of glazing or from permanent sunlight dissipating or aizēnojoš layers); FF-frame part of the projected area of the frame area relative to the total projected area of the element the glazed, determined in accordance with the provisions of paragraph 110; Al, p-General glass elements (such as Windows) the projected area (m2).
103. Opaque buildings delimiting the structure effective part of solar heat in the area are: savācoš, k = c, Rs etc. Act (36) where: S, k – opaque parts of the effective area (m2) savācoš; ASC-absorption coefficient opaque parts of the Sun's radiation, which is determined in accordance with the standard EN ISO 6946: EN 2008 "buildings būvkomponent and būvelement. Siltumpretestīb and heat exchange coefficient. The methodology for calculating "(hereinafter EN ISO 6946: EN 2008); RS-opaque parts of the external surface of the thermal resistance shall be determined in accordance with the standard EN ISO 6946: EN 2008 (m2 K/W); Etc: opaque parts of the thermal transmittance, determined in accordance with the standard EN ISO 6946: EN 2008 (W/(m2xoC)); Eye-opaque parts of the projected area (m2).

104. The shading with the conditions for the mobility of the factors of reducing shading from a hairdryer, g is calculated using the following formula: Hairdryer, g = [(1 − fl, int) + intgl + fl, gene shadow]/Gene (37): gene – total solar energy transmitted through the window, if not use solar shading, determined in accordance with annex 5 of these regulations; GL + shadow – total solar energy transmitted through the window if you use solar shading, determined in accordance with annex 5 of these regulations; FL, in, the time factor a value using a solar shade, for example, as in the case of solar radiation intensity function.
105. The alternative criteria for the use of solar shading to distinguish between solar control types: 105.1. no control (including the window g value);
105.2. manual operation;
105.3 the motorised operation;.
Auto control 105.4. 106. the external shading reduction factor in the FENS, where the range is from 0 to 1, reflects solar radiation, reducing the quantity to determine continued surface shading the relation to 106.1. other buildings:;
106.2. ambient terrain and land cover;
106.3. shelters, overhanging URu.tml.;
106.4. same building other elements;
106.5. wall mounted external parts that are glazed elements. 107. Shading reduction factors are determined using the following formula: a = the hair dryer I, p.s., environment (38), I, among which: I, ps, environment – the average solar radiation, which actually came from the shaded plane and accumulated from external conditions during the heating season (W/m2); I, the environment – the average solar radiation of the plane gained without shading (W/m2).
108. Shading reduction factor calculation should be based on the following simplification: 108.1. delays in the direct solar radiation;
108.2. has changed the bottom reflection radiation. 109. Shading correction factors is calculated using the following formula: = the hair dryer Fh Fp Fl (39) where: Fh-shading correction factor part of the horizon effect under this provision 6. table 1 of the annex; FP-shading correction factor part of the overhang and sheds the impact in accordance with the provisions of annex 6, table 2; FL-shading correction factor part window position of influence in accordance with the provisions of annex 6 of table 3.
110. each window frame square portion shall be determined in accordance with the standard EN ISO 10077-1 EN: 2007 "of Windows, doors and shutters thermal characteristics. Calculation of Siltumcaurlaidīb. Part 1: General "or the calculation uses a fixed FF value = 0.3.5.9 parameters dynamic calculation Calculation procedure 5.9.1.111. Using dynamic method takes into account the heat resistance, heat capacity (power) and thermal benefits of solar and internal heat resources building or building area. 112. the calculations take into account the dynamic effects, introducing using benefit factor for heating and cooling of the use factors in the loss. 113. If the heating is intermittent or turned off, the building's thermal inertia effects taken into account separately. 5.9.2. The benefits of using factor Benefits of using 114. heating is the heat factor ηApk balance γApk and numeric values in a parameter aApk function that depends on the inertia of the building and which is determined using the following formula: 114.1. If you (each month or season and each building zone): ηApk, ieg-benefit utilization factor for heating; γApk-heat balance factor heating nodes; QApk, z is the total heat loss in the heating portion shall be determined in accordance with the provisions of section 68.1. (who); QApk, ieg-total heat yield heating part, determined in accordance with this rule 69.1. subparagraph (who); aApk-numerical parameter according to the time constant, τApk, determined using the following formula: = .0 aapk aapk + τapk (44), τapk .0 .0 aapk-dimension where: indication numeric parameter. Continuous fire blazing (more than 12 hours a day) buildings, such as apartment buildings, hotels, months, aapk .0 = 1 for calculation of the seasonal calculation aapk .0 = 0.8; τapk-the area of a building or of the time constant, determined in accordance with this rule 119 (h); τapk .0-time constant. Continuous fire blazing (more than 12 hours a day) buildings, such as apartment buildings, hotels, the calculation of the month τapk .0 = 15, τapk = .0 to calculate the season 30.115. Benefits of using factor is determined independently of the heating system, the temperature characteristics of the complete control and unlimited flexibility. 5.9.3. the Loss factor of using cooling Loss of 116. the use factor for cooling heat balance ηdz is part of the cooling function and numeric parameter γdz adz, which depends on the building's thermal inertia. Loss of the use of factor is calculated using the following formula: 116.1. If you (each month or season and each building zone): ηdz, z-heat loss factor use; γdz – cooling parts heat balance; Qdz, z-cooling parts of the total heat loss with transmission and ventilation, shall be determined in accordance with the provisions of section 68.2. (who); Qdz, z-cooling parts total heat benefits shall be determined in accordance with the provisions of point (who) EB 69.2.; adz-numerical parameter, depending on the time constants τdz, determined using the following formula: adz = adz .0 + τdz (49), τ: adz .0 .0 which either-dimension numerical parameter specified. Continuously cooled (more than 12 hours a day) buildings, such as hotels, the calculation of the month = 1 .0 adz, seasonal calculation adz .0 = 0.8; – τ or of a building or area time constant, determined in accordance with this rule 119 (h); .0-specified time τ or constant. Continuously cooled (more than 12 hours a day) buildings, such as hotels, the calculation of the month or season .0 = 1 τ, τ = .0 for calculating or 0.8.117. Loss of use factor is determined independently of the characteristics of the cooling system, assuming that temperature is completely controlled and is flexible. 5.9.4. The building of the time constant, the coefficient of thermal mass and internal heat capacity Building 118. time constants, coefficients and the mass of heat internal heat capacity dynamic parameter values calculated in accordance with the procedure laid down in this section or adopted in accordance with the provisions of annex 7. 119. area of a building or of the time constant τ represents the conditioned area internal thermal inertia in the heating and the cooling period. It is calculated using the following formula: τ = Cm/3600 (50), HK-building or where: τ building zone time constant heating or cooling τdz τapk part (h); Cm – adjust the internal heat of the building power, calculated in accordance with the provisions of paragraph 121 (W/c); HK-building the overall heat loss coefficient, calculated in accordance with that rule 120 (W/c).
120. in the area of a building or the overall heat loss factor is calculated using the following formula: HK = (HT + Hv) (51): HT-building heat transmission coefficient shall be determined in accordance with the standard of LBN 002-01 (W/c); HV-venting the heat transmission factor shall be determined in accordance with the standard EN 15242:2007 and EN standard EN 15241: in 2007 (W/c).
121. the area of a building or the corrected internal heat capacity in Cm is calculated by adding all the building elements, the adjusted heat capacity in direct thermal contact with the zone's internal air: Cm = 1990s Xj Aj (52): Cm-adjusted internal heat capacity (W/c); XJ-adjusted to internal heat capacity building element j area shall be determined in accordance with the standard EN ISO 13786: EN 2008 "būvkomponent of the thermal characteristics of the building. Dynamic thermal characteristics. Calculation methodology "(W/(m2xoC)); AJ-item (j) area (m2).
5.10. The indoor conditions of operating mode 5.10.1. running mode and continuous or semi-continuous heating and cooling 122. Heating and cooling used in the following operating modes: 122.1. continuous heating cooling and (or) the constant set temperature;
122.2. night time and (or) a week set reduced or turned off temperature;
122.3. "holiday" heating or cooling (such as periods when rooms reside people);
122.4. maximum heating or cooling load (the period when the check raise relevant indicators). 123. For permanent heating at full heating period of the building or the building zone, you must use one set temperature Tuzs, DAC, which is the same as the set temperature for heating. 124. Continuous cooling in cooling period full of buildings or building zone, you must use one set temperature, or Tuzs, which is the same as the setpoint temperature for cooling. 125. The actual average temperature of heating period can be higher, which leads to pārkurināšan and should be taken into account with respect to benefits of use. Cooling for part of the actual average internal temperature may be lower, which causes large heat losses. 126. Irregular (semi-permanent) heating and cooling down as a continuous set of temperature adjusted by meeting one or more of the following conditions: room temperature 126.1. average is used in the calculation, as the set temperature: 126.1.1. installed temperature difference between the heating or cooling of permanent and reduce the heating or cooling is less than 3 ° c;
126.1.2. building time constant, determined in accordance with the provisions of paragraph 119, is less than 0.2 times the period of reduced heating (heating) or cooling (cooling);

126.2. Permanent heating parts set temperature set temperature is used as the calculation of all the periods, if the time constant, determined in accordance with the provisions of paragraph 119, is three times the size reduced heating period. 127. The installed temperature of continuous use refrigeration period all periods when the building time constant, determined in accordance with the provisions of paragraph 119, is three times the reduced cooling period. 5.10.2. adjustment of heating break 128. Where is the heating break and are not met, this provision sub-chapter conditions 5.10.1., heating energy is calculated using the following formula: Qapk, n = asamz, H × Qapk, n, n + (1-asamz, H) × Qapk, n B (53), where: n-Qapk, the energy required for heating, taking breaks (who); Qapk, n, n-energy required for heating the continuous heating period, assuming that the set temperatures are controlled in all days of the month (who); Qapk, n, B, the necessary energy for heating break time, assuming that the set temperatures are controlled in all days of the month (Wh) (break period in the energy required for heating, Qapk n, B is zero); asamz, H-factor reducing the heating break, determined in accordance with the provisions of article 129;
129. The reduction factor for heating with breaks asamz, H is calculated using the following formula: s, H = 1, H bsamz (τapk .0/τ) × γapk × (1-fN, DAC) (54) (with a minimum value of asamz, H = fN, DAC and the maximum value asamz, H = 1) where: s, H-reduction factor for heating with breaks; fn, DAC – the number of hours a week with a continuous heating (setpoint temperature is not reduced or heating is not turned off), for example, (5 x 14)/(7 x 24) = 0.42; bsamz, DAC-empirical correlation factor (the value bsamz, H = 3); τ-area of a building or of the time constant, determined in accordance with the provisions of paragraph 119 (h); τapk .0-recommended time constant heating portion shall be determined in accordance with the provisions of subdivision (h) 5.9.2.; γapk-heat balance of heating part of the proportions shall be determined in accordance with the provisions of this subsection 5.9.2.
130. If there is a cooling break and this provision is not complied with section 5.10.1. these conditions, the necessary energy for cooling is calculated using the following formula: Qdz, n = asamz, (C) × Qdz, n, n + (1 – asamz, (C)) × Qdz, n B (55): Qdz, n-need energy for cooling, given the breaks (who); Qdz, n, n-power required for cooling in continuous cooling period, assuming that the set temperatures are controlled in all days of the month (who); Qdz, n, B, the necessary energy for cooling during breaks, assuming that the set temperatures are controlled in all days of the month (Wh) (break period, if cooling is not used, QC, n, B is zero); asamz, C-reduction factor for cooling with breaks, shall be determined in accordance with this provision, paragraph 131.
131. The reduction factor for cooling with breaks asamz, (C) is calculated using the following formula: C = asamz, 1-bsamz, H (τdz .0/τ) × γdz × (1-fN, or) (56) (with minimal value, C = asamz, (C) and the maximum of the fdz value asamz, and C = 1): asamz, C-reduction factor for cooling with breaks; fn, or – the number of days a week with the set temperature for cooling (temperature is not reduced or the machine is not turned off), such as 5/7; Breda, or empirical correlation factor-, its value is 3; τ-area of a building or of the time constant, determined in accordance with the provisions of paragraph 119 (h); τdz .0-specified time constant cooling part, determined in accordance with the provisions of subdivision (h) 5.9.3.; γdz-heat balance in the ratio of the cooling part, determined in accordance with the provisions of this subsection 5.9.3.
5.10.3. "holiday" period of adjustment 132. individual buildings, such as schools, the heating or cooling season, the "holiday" period significantly reduce heating or cooling energy.
133. Heating and cooling energy needs for the "holiday" period is calculated in the following order (months, which include the "holiday" period, calculations shall be carried out twice): 133.1. continuous period and the "holiday" period; 133.2. linear interpolated results not populated and inhabited period according to the fraction of time, using the following formulas: Qapk, 133.2.1., N × n = fapk Qapk, n, n + (1-fapk, N) × Qapk, on the (57); 133.2.2. Qdz, n = N × Qdz, fdz, n, n + (1-fdz, N) × Qdz, on the (58): Qapk, n – which requires energy for heating, considering the "holiday" period (the who); Qdz, n-need energy for cooling, considering the "holiday" period (the who); Qapk, n, n-energy required for heating the continuous heating period, assuming that the set temperatures are controlled in all days of the month (who); Qdz, n, n-power required for cooling in continuous cooling period, assuming that the set temperatures are controlled in all days of the month (who); Qapk, n, to the energy required for heating "holiday" period, assuming that the set temperatures are controlled in all days of the month (who); Qdz, n, to the energy required for cooling "holiday" period, assuming that the set temperatures are controlled in all days of the month (who); fapk, N – number of days with continuous heating in relation to the number of days in the month, such as 10/31; fdz, N – number of days with continuous cooling relative to the number of days in the month, for example, 10/31.5.11. Energy use heating and cooling the building zone common 5.11.1. the necessary energy for heating and cooling 134. total energy required heating and cooling the building zone is calculated as the sum of the calculated energies for the period, taking into account the possible workload for different heating or cooling parts as defined in these regulations and in paragraph 128.129. : where: Qapk, n, set the required – the total energy for heating specific zone (Wh); Qapk, n, i-energy required for heating specific zone calculation period (per hour or per month), determined in accordance with the provisions of subdivisions (who) 5.4.2; Qdz, n,-total energy needed in a given area (who); Qdz, n, j, the energy required for cooling specific zone calculation period (per hour or per month), determined in accordance with the provisions of subdivisions (who) 5.4.2.
135. Heating and cooling season duration to the appropriate system components operating period shall be determined in accordance with the provisions of this subchapter 5.4.1. 136. calculation of results the Multizon (with thermal effects between zones or not) the total energy required heating and cooling of heating, cooling and ventilation systems to combine different areas has the necessary amount of energy through the zones, which use different HP system combination: where: Qapk, n, an, HP-total energy of all required building area HP heating, using a combination of certain system (who); Qapk, n, z,-the total energy required in a building zone z heating, using a combination of certain system, shall be determined in accordance with this provision, the bottom section 5.11.1. (who); Qdz, n, an, HP-total energy of all required building area HP, cooling, using a combination of certain system (who); Qdz, n, z,-the total energy required in a building zone z cooling, using a combination of certain system, shall be determined in accordance with this provision, the bottom section 5.11.1. (who).
5.11.2. the total system energy use heating, cooling and ventilation of 137. If the heating, cooling and ventilation systems are combined, the total energy use for heating Qapk, beat and total energy use for cooling Qdz, sis (including system loss) is defined as the energy needed for heating and cooling functions, in accordance with the standard heating and cooling systems LVS EN 15316-2-1:2007, EN EN 15316-2-1:2007, EN EN EN EN 15241:2007 and 2007.138.15243: the total system energy for heating, cooling and ventilation systems is calculated according to the following system combinations : the total system used 138.1. energy Qapk, I Qdz, sis, sis, i to energonesēj i, which includes the use of palīgenerģij or bin (who); 138.2. heating the necessary amount of energy Qapk, n, i, a heating system Qapk THUMP, loss, loss, and the heating system of the palīgenerģij beat, pal, QH, i to energonesēj i (Wh). Loss and palīgenerģij include energy production, transport, control, distribution, storage and discharge (just down the cooling: QDz, n, i, QDz, sis, sis, i and QDz, the Assistant, i); 138.3. system heat loss is determined, taking into account the overall system efficiency. In this case, the calculation shall be made using the following formulas: Qapk, 138.3.1. Qapk, sis = n (63);
ηapk, hit 138.3.2.  Qdz, Qdz, sis = n (64), ηdz, beat Qapk/dz, where: beat-energy heating or cooling systems, including system losses (who); Qapk/dz, n-energy required heating and cooling using a specific heating system shall be determined in accordance with the provisions of paragraph 136 (who); ηapk/dz, beat-in general the effectiveness of the system heating or cooling systems, including energy production, electronics, transport, storage, distribution and exhaust losses, except where provided as additional energy.

139. Power system loss is determined as the total losses, plus the loss of the system that were recovered from the system. 140. zudumo power system includes the buildings heat loss of more uneven distribution of room temperature and temperature control. 141. the total additional required power ventilation systems shall be determined in accordance with the standard EN EN 15241:2007 and includes the following types of energy: 141.1. fans;
heat recovery from 141.2. refrigeration;
It is suitable for centralised air 141.3.;
141.4. air central cooling. 6. building the model validation of calculation 6.1. calculation of Building model validation using 142. building model validation of calculation (check) to ensure that the calculation of energy performance of the building derived indicators meet actually obtained. This is the calculated and actual buildings for pointer comparison is necessary to accurately evaluate energy efficiency measures identified benefits (calculate the planned power consumption after implementation). 143. The validated calculation model of the building used in the operation of existing buildings energy efficiency assessment (certification) and to calculate the energy efficiency improvement measures identified performance indicators. The use of validated data sets of the building, which is building the model for calculation of raw data that one or more of the raw data have been adjusted to the actual data base so that the result of the calculation, using the model significantly different from not the actual measurement data. A validated set of data quality is a balance between the cost of acquisition (harvesting) and corresponding accuracy. 6.2. calculation of the building model validation procedure 144. building calculation model validation (testing) procedures shall be carried out in the following order: 144.1. acquire the measured energy efficiency indicators in accordance with the provisions of Chapter 4;
144.2. calculation of the energy performance of compiled data and indicators, such as the actual climatic data, the actual indoor conditions, population data, building heating dispersion of information;
144.3. the energy efficiency test scores. 145. Energy efficiency calculations necessary data are obtained from the building design documentation, conducting surveys and measurements. 146. All data used to assess confidence intervals. Data that cannot be obtained directly, using the calculation obtained or regulations and standards. 147. evaluation period the energy collected and calculated at the beginning of the data must refer to the same time period. 6.3. verification of indicators for energy efficiency energy efficiency indicators 148. review all energonesēj compared to the measured energy efficiency rating and energy efficiency calculated energy consumption assessment results. 149. If the measured energy efficiency rating and energy efficiency calculated the outcome of the assessment is acceptable (other than for less than 20 percent) believe that the calculation model of the building, including the estimated starting data is reliable and energy efficiency assessment may proceed. 150. If the outcome of the assessment is not acceptable (differs by more than 20 percent), further research should be carried out to verify data or to enforce such influencing factors, which have not previously been taken into account. Repeat the test with a new start of the data set. 151. If necessary, adjust the starting data for comparison of energy efficiency evaluation results would be acceptable. 6.4. Indoor microclimate and external climatic rating 152. Climatic data shall be determined in accordance with the LBN 003-01 "Būvklimatoloģij". 153. Surveying buildings, evaluate the actual internal temperature of the building, because in practice it is often different from the designed temperature, and this significantly affect the cooling and heating energy consumption is used. Internal temperature assessment (measurement) is used in the following methods: 153.1. buildings with mechanical ventilation air temperature measured in the exhaust pipe up to the direction of air flow from the fan. Ventilated area's average temperature is evaluated when the exhaust fan is turned on;
153.2. buildings where all the system is controlled by computer and the internal temperature of the recordings are made in several places, measurements shall be carried out in accordance with the standard EN EN 15232:2007 "building energy efficiency. Building automation, regulatory and management influence "paragraph 5.8;
153.3. with small single-channel data recorder temperature measured or recorded in some common areas of the building season in typical conditions, that is, the days of the month or seasonal meteorological indicators;
use the set temperature 153.4. indicators when the heating or cooling system controls the thermostat and the thermostat calibration is checked.
153.5. with a pyrometer or manual air temperature gauges for air temperature shall be determined immediately several measurement points. 154. air infiltration and the natural ventilation of the external assessment of the air flow using the following methods: 154.1. air handling equipment in the air flow rate;
154.2. marking of gas solution in accordance with the standard LVS EN ISO 12569:2002 "thermal insulation of buildings-determination of air exchange building-Marked gas dispersion method". 155. the internal heat source, such as the number of people and duration of stay in the buildings assessed, surveying the building, or is obtained from the owner or operator of the building. 156. The internal heat sources as artificial lighting and electrical appliances are evaluated using the electricity consumption records, if the meter is not also added heating or cooling systems. If the light is not available, the calculation shall be carried out in accordance with the standard EN EN 15193:2008. Evaluating the internal heat sources, it should be noted that not all the energy is used for lighting the internal heat source. For example, the light can be positioned on the outside of the building or the heat can be partially discharged. 157. Hot water consumption data for buildings that have installed a separate meter, obtained from the difference between the two readings of the assessment at the beginning and end of the period. If hot water is not listed, so consumption is assessed by population, building use and medium hot water consumption data using the data referred to in the standard LVS EN 15316-3-1:2008 "building heating system. System energoprasīb and efficiency calculation methodology. 3-part 1: the House hot water system: requirements (for use on a continuing basis with the taps), standard EN EN 15316-3-2:2008 and EN standard EN 15316-3-3:2008, "building heating system. System energoprasīb and efficiency calculation methodology. 3-part 3: domestic hot water systems: hot water generation ". 158. the invoices of electricity Consumed is used to evaluate the artificial lighting used energy consumption if the meter is connected to other systems (such as cooking, heating, cooling systems). If the counter data can not be used, energy consumption is calculated in accordance with the standard EN EN 15193:2008.7. Overall energy efficiency of the building is 159. calculation of indicators At the required (calculated) and used (measured) energonesēj calculation determines the total energy efficiency of the building. 160. the total building energy efficiency indicators in terms of conversion and of carbon dioxide (CO2) emissions rating. 161. Carbon dioxide emissions of the emitted carbon dioxide (CO2) mass is calculated from the energy delivered and exported for each energonesēj (carbon dioxide (CO2) emission factor shall be adopted in accordance with the provisions in annex 1): 1990s mCO2 = (Epieg, i Kpieg, i)-1990s (Eex i Kexi, i) (65), in which:-mCO2 carbon dioxide (CO2) emitted mass (kg); Epieg, i-energonesēj delivered to the energy i (who); EEx i-from the energonesēj i exported energy (Wh); Kpieg, s – carbon dioxide (CO2) emissions factor energy supplier i (kg/who); Kexi, i – carbon dioxide (CO2) emissions factor energy exporter i (kg/who).

8. energy efficiency improvement measures planned energy savings assessment 162. To assess the planned energy efficiency improvement measures, the energy savings obtained using the same buildings the calculation model to assessing energy efficiency calculated. 163. If the measured energy use assessment calculation model of the building and start data validation, calculation, the values obtained are compared with measured values and check the calculation model of the building. This increases the probability that the planned measures for improving energy efficiency energy savings calculation is accurate and that the planned energy efficiency improvement measures in practice will give the expected results. 164. If the planned to use the building similar to the above, the planned evaluation of the benefits of energy efficiency measures to use specific climatic and population data. This allows you to assess the management practices of the buildings and the impact of changes in behaviour. 165. In identifying the necessary energy efficiency improvement measures, prepare one or more of the buildings energy efficiency scenarios which are specific and mutually agreed energy efficiency measures. Given that the individual events can also be interlaced (such as increased thermal insulation or passive solar heat gains can lower boiler efficiency), each individual in the course of implementing the measures resulting effects may not be counted. The combined measures must be calculated taking into account the mutual interactions. 166. for each proposed scenario (includes specific energy efficiency improvement measures) the starting data changes according to the planned energy efficiency improvement measures and the calculation. The difference between the assessment made before the energy efficiency improvement measures and which are the measure of effect on energy consumption. 167. After the necessary identification of energy efficiency improvement measures for the calculation of a streamlined building regulatory energy efficiency assessment. For this purpose use the calculation model of the building with the issue (start) data set, taking into account the impact of energy efficiency improvement measures and regulations for the start of the data set. The energy efficiency improvement measures planned actual efficiency depends on how the building will actually be used. 168. the provisions shall enter into force on March 1, 2009. Prime Minister Godmanis economic Minister i. k. Gerhard annex 1: Cabinet of Ministers of 13 January 2009. of Regulation No. 39 higher calorific values, carbon dioxide (CO2) emissions factors no PO box fuel measure of gross calorific value 103Wh CO2 emission factor 10-6 kg/who 1. Coal kg 7.67 315 2.0 3. Biogas m3 natural gas m3 5.68 10.35 181 4. Fuel oil (heavy fuel oil) 262 5. Diesel kg kg 11.87 12.42 115 6. Frēzkūdr kg 5.56 188 7. Wood kg 145 8.5.21 straw kg 5.28
0.9, Liquefied Natural gas, in 13.73 207 10. Electricity-kg-90 economic Minister k. Gerhard annex 2 Cabinet 2009 January 13, Regulation No 39 within the energy efficiency rating and energy flow display economic Minister k. Gerhard annex 3 of the Cabinet of Ministers of 13 January 2009. of Regulation No. 39 calculation period duration Period quantity the quantity of hours January February March 31 744 28 672 31 744 April 30 720 May June July 31 744 31 744 30 720 August 31 744 September 30
Nov 30 720 720 October 31 744 December 31 744 heating season in accordance with the provisions of subchapter 5.4.1 days x 24 cooling season in accordance with the provisions of subchapter 5.4.1 days x 24 Economy Minister k. Gerhard annex 4 of the Cabinet of Ministers of 13 January 2009. of Regulation No. 39 internal heat gains 1. Internal heat gains, heat flow in the part of the people and devices on residential buildings. table 1 no days of the week, PO box 24 hours living room + kitchen (qiek, + qiek, an i)/Aapr (W/m2) of conditioned areas Other (for example, bedroom) (qiek, qiek, population + i)/Aapr (W/m2) 1. Monday – Friday 07.00 – 17.00 17.00-23.00 23.00 8.0 1.0 20.0 1.0-2.0 6.0 00 average of 9.0 2.67 2. Saturday and Sunday 07.00-17.00 17.00-23.00 23.00 20.0 4.0 8.0 2.0-2.0 6.0 to 9.0 3.83 3.00 Average average of 9.0 3.0 2. Internal heat gains, heat flow in the part of the population and devices in Office buildings. 2. no PO box table the day of the week 24-hour hours office space (60% of the net floor area) (qiek, qiek, population + i)/Aapr (W/m2) other spaces such as the foyer, lobby, corridor (40% of the net floor area) (qiek, qiek, population + i)/Aapr (W/m2) 1. Monday – Friday 07.00 – 17.00 17.00-23.00 23.00 20.0 8.0 2.0 1.0-2.0 1.0 00 average 9.50 3.92 2. Saturday and Sunday 07.00-17.00 17.00-23.00 23.00 2.0 1.0 2.0 1.0-2.0 1.0 2.0 1.0 3.00 average average of 7.4
3. Heat Flux 3.1 percentage of the population non-residential buildings. table 3 no PO box area to the Appropriate person (m2) other spaces such as the foyer, lobby, corridor (40% of the floor area of the net), an qiek/Aapr (W/m2) 1.1.0 2.5 10 3 5 4 15 2..... 20 2 4 14 3 5 5.5 heat flow part of the devices in the non-residential buildings. table 4 no PO box buildings use heat Produced during operation of the equipment is qiek, i/Aapr (W/m2) part of the duration of the average heat flow fiek from the installation qiek, i/Aapr (W/m2) 1 2 3 4 5 1 3 2 15 Office 0.20. School 5 1 0.15 health care institution-Clinic 8 4 3 0.50. Health care institution that is not a clinic 15 3 4.0.20 catering space 10 3 5 0.25. Trading room 10 3 6 Public measures 0.25. Room 5 1 7 0.20. Hotel 4 2 8 authority repair 0.50.4.2 9 sporting authority 0.50 4 0.25 1 Minister of Economic Affairs k. Gerhard annex 5 cabinet 2009 January 13, Regulation No 39 of the common element transparent parts of the solar energy transmittance values and reduction factors 1. Solar energy transmittance values. table 1 no PO box type of Glazing common element transparent parts of the solar energy transmittance gg 1. Simple glass 0.85 2. Double glazing Double glazing 3 0.75 with selective coating 0.67 4. triple glazing 0.7 5. triple glazing with two selective coating 0.5 6. Double window Translucent parts 2 0.75 solar energy transmittance values affect the cover (curtains and blinds), which significantly reduces the solar energy transmittance. table 2 shows the factors of reducing some of the cover types. Cover (curtains and blinds) impact factor must be multiplied by the total element transparent parts of the solar energy transmittance value. 2. table no PO box Cover concealing the nature of the optical qualities of the reduction factors with absorption transmission internal cover external screens 1. lifting and white drop-down blinds 2.0.1 0.05 0.1 0.3 0.25 0.30 0.45 0.10 0.15 0.35 White curtains 0.1 0.5 0.7 0.9 0.65 0.80 0.95 0.55 0.75 0.95 3. Colored fabric curtains 0.3 0.1 0.3 0.5 0.42 0.57 0.77 0.17 0.37 0.57 4. Aluminium cover 0.2 0.05 0.20 0.08 economic blinders Minister k. Gerhard annex 6 Cabinet 13 of 2009. January Regulation No 39 reducing shading factors 1. Shading correction factor part of the horizon. table 1 no BC horizon angle 55 ° latitude 65 ° latitude South West/East North South West/East North 1.2.10-1.00 1.00 1.00 1.00 1.00 1.00 0.94 0.92 0.99 0.86 0.89 0.97 0 ° 3.20-30 4-0.68 0.75 0.95 0.58 0.68 0.93 0.49 0.62 0.92 0.41 0.54 0.89 5.40-0.40 0.56 0.89 0.29 0.49 0.85 2. Shading correction factor part of the overhang and shelters. 2. table no PO box angle 55 ° Horizon latitude 65 ° latitude South West/East North South West/East North 0 ° 1 2 30-0.93 0.91 0.91 0.95 0.92 0.90 1.00 1.00 1.00 1.00 1.00 1.00.3.45.60-4 the 0.80 0.79 0.80 0.85 0.81 0.80 0.60 0.61 0.65 0.66 0.65 0.66 3. Shading correction factor part window position. table 3 No. p.k. horizon angle 55 ° latitude 65 ° latitude South West/East North South West/East North 0 ° 1 2 30-1.00 1.00 1.00 1.00 1.00 1.00 0.94 0.91 0.99 0.94 0.90 0.98 3.45.60-4 the 0.86 0.83 0.99 0.85 0.82 0.98 0.74 0.75 0.99 0.73 0.73 0.98 economic Minister k. Gerhard annex 7 Cabinet 2009 January 13, Regulation No 39 dynamic parameter values no PO box building construction classification of HK (W/K) Cm (Wh/l)
τ (h) 1. Very mild Early Early 1.8 16.7 9.2 2. Lightweight 9.2 Early Early 2.5 3.23.1 medium 9.2 Early 34.4 3.7 4. Severe Early Early Early 9.9 54.2 5.5 5. Very heavy Early 77.2 10.4 7.4 Note Early. * In accordance with the standard EN EN 13790:2008. Economy Minister k. Gerhard