Decree No. 148 / 2007 Coll.
Decree on the energy performance of buildings
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Order
Effective from 01.07.2007
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27.06.2007
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148
DECLARATION
of 18 June 2007
on the energy performance of buildings
The Ministry of Industry and Trade (hereinafter referred to as "the Ministry") provides, pursuant to § 14 (5) of Act No. 406 / 2000 Coll., on Energy Management, as amended, (hereinafter referred to as "the Act") for the implementation of § 6a (1), (2), (5) and (7) of the Act:
Subject matter
This decree implements the relevant European CommunityRegulation (1), notified in accordance with Directive 98 / 34 / EC of the European Parliament and of the Council of 22 June 1998 laying down a procedure for the provision of information in the field of technical standards and regulations and rules and of rules on information society services, as amended by Directive 98 / 48 / EC, and provides for:
(a) energy performance requirements for buildings, comparison indicators and calculation method for determining the energy performance of buildings;
(b) the content and manner of processing of the energy performance certificate of buildings, including the use of energy audits already carried out;
(c) the scope of checking persons from the details of the design of the energy licence of buildings.
Basic concepts
For the purposes of this decree:
(a) a balance sheet evaluation based on energy calculations used or foreseen for use in a building for heating, ventilation, cooling, air conditioning, hot water preparation and lighting, for the standardised use of the building;
(b) energy supplied to the building at its system border;
(c) energy systems of the building of a system of technical equipment for heating, ventilation, cooling, air conditioning, hot water preparation and lighting,
(d) a mass or phenomenon energiser which may be used for the manufacture of mechanical work or heat or for the control of chemical or physical processes;
(e) a refrigerated zone of the whole building or its integrated part, in which the required state of the indoor environment is ensured by cooling in terms of its temperature parameters, humidity and mode of use to which the outdoor environment or other zone is adjacent;
(f) the classification class of the graphic and verbal expression of the energy performance of the building;
(g) the air-conditioned zone of the whole building or its integrated part, in which the required state of the indoor environment is ensured with regard to its temperature parameters, humidity and, where appropriate, the purity of the air and the mode of use to which the outdoor environment or other zone is adjacent;
h) the envelope of the building all structures on the system boundary of the whole building which are exposed to the outdoor environment;
(i) energy relief systems used for heating, ventilation, cooling, air conditioning and hot water preparation to ensure the operation of energy-changing devices for usable energy and the supply of energy to the zone;
(j) a reference building of the same type, the same shape, size and internal layout, with the same type of standardised operation and use as the evaluated building, and the technical standards prescribed by the quality of the envelope of the building and its technical systems;
(k) standardised use of the building by use or future use in accordance with the conditions of the indoor and outdoor environment and operations laid down in technical standards and other regulations (2);
(l) the system boundary of the area formed by the outer surface of the boundary zone structures;
(m) the useful energy supplied by the building's energy systems to ensure the required services, namely the required indoor temperatures, humidity, lighting, ventilation and hot water preparation, including usable profits and losses;
n) outdoor air, air in adjacent non-heated spaces, adjacent soil, neighbouring building and other neighbouring zone,
(o) the ventilation zone of the whole building or its integrated part in which the required state of the internal environment is ensured by ventilation as regards its temperature parameters and the mode of use to which the outdoor environment or other zone is adjacent;
(p) internal environment within the building, defined by the calculation values of temperature, relative humidity, or, where appropriate, by the speed of internal air flow and light comfort within the building or zone, the parameters of which are prescribed by technical, hygienic and other standards and regulations;
(q) the heated zone of the whole building or its integrated part in which the required state of the indoor environment is ensured with regard to its temperature parameters, humidity and the mode of use to which the outdoor environment or other zone is adjacent;
(r) a zone group of spaces with similar characteristics of the internal environment and the use regime.
Energy performance requirements of the building
(1) The energy performance requirements of the building under Section 6a (1) of the Act are met if the energy performance of the evaluated building is lower than the energy performance of the reference building under Section 5, while respecting the general technical requirements for the construction (2). Annex No 1 to this Decree provides for details of the assessment of compliance with the energy performance requirements of the building.
(2) The energy performance of the reference building is the total annual energy delivered in GJ, which is determined by the balance sheet evaluation of the reference building pursuant to Section 5. Annex 2 to this Decree provides for details of calculations and the required input data for assessing the energy performance of buildings. When the completed building is changed, these input data shall be entered only for the systems or elements of the building affected by the change for the calculation of the total required annual energy delivered in GJ and the other inputs shall be the same as for the evaluated building.
(3) In the balance sheet evaluation, the same calculation method used in determining the energy performance of the reference building shall be used to determine the energy performance of the evaluated building.
(4) In the event of non-compliance with the requirements referred to in paragraph 1, technically and economically appropriate measures shall be proposed for the assessed building to reduce the energy performance of the building to the required level. For the design of the recommended measures, a comparison of the energy supplied shall be used to cover individual sub-needs with the corresponding sub-reference values.
(5) The procedure for assessing the technical, ecological and economic feasibility of alternative heating energy supply systems and, where appropriate, for the preparation of hot water and cooling pursuant to § 6a (4) of the Act for new buildings over 1000 m2 of the total floor area is set out in Annex 3 to this Decree.
(6) The energy performance of the housing unit or zone within the building created for separate use shall be demonstrated by meeting the requirements of paragraph 1 for the whole building.
Comparison indicators
(1) Comparative indicators are met when:
(a) the building, its construction structures and its connections are designed and implemented in such a way that
1. construction structures and their connections have at least such thermal resistance at all locations that there is no condensation of water vapour and mould growth on their internal surface;
2. the construction structures and their connections shall have a maximum heat transmittance coefficient required and a heat transmittance factor;
3. there is no condensation of water vapour within construction structures or only in quantities which do not jeopardise their performance during the expected lifetime;
4. the functional joints of the external fillers have the highest required low airflow, other structures and clutches of the building's circumference are almost airtight, with the required low overall airflow of the building's envelope,
5. floor structures have the required drop in touch temperature, provided by their heat absorption and temperature on the internal surface;
6. rooms have the required thermal stability in winter and summer periods, reducing the risk of excessive cooling and overheating;
7. the building has the highest average heat transmittance coefficient required for the building cover;
(b) the technical installations of the building for heating, ventilation, cooling, air conditioning, hot water and lighting and their regulation3)
1. the required supply of useful energy for the required state of the internal environment;
2. energy supply with the required energy efficiency;
3. Required low-energy lighting for combined and artificial lighting,
4. low energy performance of the building.
(2) Compliance with the comparative indicators referred to in paragraph 1 shall be verified and evaluated by the calculations or measurements set out in Annex 1 to this Decree.
Method for determining the energy performance of the building
(1) The energy performance of the building is determined by calculating the total annual energy delivered in GJ needed for heating, ventilation, cooling, air conditioning, hot water preparation and lighting in its standardised use by balance sheet evaluation.
(2) The balance sheet evaluation is carried out using an interval calculation method preferably with the monthly period. For buildings with low thermal inertia, an hourly or even shorter time interval calculation method may be used with different details of the calculation methods and input data. The details of the evaluation of the energy performance requirements of the building are set out in Annex 1 to this Decree.
(3) The total annual energy delivered in the balance sheet shall be determined as the sum of each calculated partial consumption of energy delivered for all time intervals of the year and for all heated, chilled, ventilated or air-conditioned building zones. The calculation shall be made with a distinction according to the energisers.
(4) For a comparison of the energy performance of buildings of the same type, the specific annual energy consumption of the building, expressed by the ratio of the total annual energy delivered per unit of the total floor area of the building in kWh / m2, is determined.
Certificate of energy performance of the building
(1) The energy performance certificate of the building (hereinafter referred to as the "licence") constitutes a protocol demonstrating the energy performance of the building (hereinafter referred to as the "protocol") and a graphical representation of the energy performance of the building (hereinafter referred to as the "graphic representation").
(2) The Protocol always contains:
(a) identification of the building, which is:
1. details of the building under assessment, in particular address, code of the cadastral territory and the parcel number on which the building stands;
2. details of operator, owner or construction site,
(b) the type of building;
(c) the use of energy in the building;
(d) technical details of the building:
1. a description of the volumes and areas of the building;
2. the thermal technical characteristics of the building structures and envelopes,
3. the essential characteristics of the building's energy systems;
4. the partial energy performance of the elements of the technical equipment of the building;
5. the overall energy performance of the evaluated building;
6. benchmarks,
7. expression on meeting the energy performance requirements of the building;
8. Total specific annual energy consumption per total floor area of the evaluated building and specific energy consumption for heating, cooling, ventilation, hot water and lighting, related to the total floor area,
9. the energy performance class of the evaluated building;
(e) the energy balance of the building for standardized use and the energy balance supplied or produced by the building or taken from the building;
(f) the results of the assessment of the feasibility of alternative systems under Section 6a (4) of the Act on new buildings over 1000 m2 of total floor space;
(g) recommended measures for the technically and economically efficient reduction of the energy performance of the building;
1. modernisation measures in the building part and in the technical equipment of the building;
2. measures to improve the operation and operation of the building and technical equipment of the building;
3. the energy performance class of the assessed building after the implementation of the recommended measures;
(h) the period of validity of the licence, the name and identification number of the certificate of the person authorised to draw up the licence (hereinafter referred to as the certificate).
(3) The energy performance classification scheme of the building includes classification classes A to G and their boundaries. The details of the evaluation of the energy performance requirements of the building for the classification of the building are set out in Annex 1 to this Decree.
(4) The graphical representation includes the name of the person who drew up the certificate on the basis of a certificate issued by the Ministry, the certificate identification number, the address of the evaluated building and its type, the colour scale of the classification classes A to G, the energy performance of the evaluated building and its inclusion in the classification class in the balance sheet evaluation and after the implementation of the recommended measures, the specific annual energy consumption calculated on the total floor area of the evaluated building and after the implementation of the recommended measures, the energy supplied to cover individual partial needs in percentage and the date of validity of the licence.
(5) The model of the protocol and the graphic representation of the licence is set out in Annex 4 to this Decree.
Use of processed energy audits
Data from processed energy audits shall be used to determine the energy performance of the building and to process the protocol, in particular:
(a) the areas of construction structures and their orientation;
(b) heat transfer factors for individual construction structures;
(c) technical data on energy systems of buildings such as their dimension and efficiency;
(d) the conditions of the external and internal environment.
Review of persons from the details of the preparation of an energy licence
The scope of the examination shall be determined by the details of the design of the energy performance certificate for buildings provided for in this Decree. Circles of test questions are listed in Annex 5 to this Decree.
Repeal
Decree No. 291 / 2001 Coll., laying down details of the efficiency of the use of energy in heat consumption in buildings, is repealed.
Efficacy
This decree shall take effect on 1 July 2007.
Minister:
Ing. Roman v. r.
Příloha č. 1
Annex No 1 to Decree No 148 / 2007 Coll.
Details of compliance with the energy performance requirements of the building
(1) The measured energy consumption of the building is determined by:
EPA = 277,8 x EP / Ac in kWh / (m2 year),
EP is the calculated total annual energy delivered in GJ / year,
Ac is the total floor area in m2.
with
(a) the energy supplied to the building at its system border shall be determined in accordance with national standards establishing European standards EN 15203 and EN 15315, where appropriate replacing them;
(b) for energy systems established in accordance with national standards introducing, where appropriate, European standard EN 15315 replacing it;
(c) including the useful energy supplied by the building's energy systems to provide the required services established in accordance with national standards establishing European standards EN 15203 and EN 15315, where appropriate, replacing them;
(d) the required low-energy lighting for combined and artificial lighting shall be determined in accordance with technical standards ČSN EN 12464-1 and ČSN 73 4301 and hygiene requirements;
(e) compliance with the comparative indicators referred to in Article 4 (1) shall be verified and evaluated by calculation or measurement according to technical standards ČSN 73 0540 and its normative references and related standards and regulations, ČSN EN 12454-1, ČSN 36 0020-1 and their normative references and related standards and regulations, ČSN EN ISO 13790, ČSN EN 12831, in accordance with national standards introducing European standards prEN 14335, EN 13465, prEN 15242, prEN 15241, prEN 15241 or other standards for the needs of heating system, ventilation and air conditioning and their regulation, their normative references and related regulations, ČSN EN 12454-1, ČSN 36 002021 and others for lighting and their standard references and related standards, ČSN 06 0320 Building heating systems, if any, replacing it;
(f) balance sheet evaluation shall be carried out by an interval calculation method established in accordance with technical standard ČSN EN ISO 13790 Thermal behaviour of buildings - Calculation of the heating energy requirement or in accordance with national standards introducing European standards prEN 14335 Calculation method for determining the energy needs and efficiency of systems and prEN 15315 Heating systems of buildings - Total energy consumption, primary energy and CO2 emissions, where appropriate, the standard is superseding, or the hourly interval calculation method, or with an even shorter time interval, with different details of the calculation methods and input data according to technical standards and regulations in accordance with ČSN 06 0320 Application water heating and in accordance with national standards implementing European standard prEN 15316 Building heating systems, if any, replacing it;
(2) The energy performance class of the assessed building is determined according to the table below for the calculated specific energy consumption in kWh / (m2.year), the value of which is rounded to the integer, the figure 5 being rounded upwards. The energy consumption in kWh / (m2.year) in class C is reference for listed types of buildings.
| Druh budovy | A | B | C | D | E | F | G |
|---|---|---|---|---|---|---|---|
| Rodinný dům | < 51 | 51 - 97 | 98 - 142 | 143 - 191 | 192 - 240 | 241 - 286 | > 286 |
| Bytový dům | < 43 | 43 - 82 | 83 - 120 | 121 - 162 | 163 - 205 | 206 - 245 | > 245 |
| Hotel a restaurace | < 102 | 102 - 200 | 201 - 294 | 295 - 389 | 390 - 488 | 489 - 590 | > 590 |
| Administrativní | < 62 | 62 - 123 | 124 - 179 | 180 - 236 | 237 - 293 | 294 - 345 | > 345 |
| Nemocnice | < 109 | 109 - 210 | 211 - 310 | 311 - 415 | 416 - 520 | 521 - 625 | > 625 |
| Vzdělávací zařízení | < 47 | 47 - 89 | 90 - 130 | 131 - 174 | 175 - 220 | 221 - 265 | > 265 |
| Sportovní zařízení | < 53 | 53 - 102 | 103 - 145 | 146 - 194 | 195 - 245 | 246 - 297 | > 297 |
| Obchodní | < 67 | 67 - 121 | 122-183 | 184 - 241 | 242 - 300 | 301 - 362 | > 362 |
(3) For other buildings which do not conform to the type of building referred to in the table referred to in paragraph 2, the energy performance class shall be determined in accordance with national standards introducing European standard prEN 15217 or replacing it, as appropriate.
(4) Table of verbal expression of energy performance classes of the building
| Třída energetické náročnosti budovy | Slovní vyjádření energetické náročnosti budovy |
|---|---|
| A | Mimořádně úsporná |
| B | Úsporná |
| C | Vyhovující |
| D | Nevyhovující |
| E | Nehospodárná |
| F | Velmi nehospodárná |
| G | Mimořádně nehospodárná |
Příloha č. 2
Annex No 2 to Decree No 148 / 2007 Coll.
Details of calculations and input data required to assess the energy performance of buildings
(1) In order to meet the requirements of Section 3 of the Decree, the energy performance of the reference building shall be determined by a balance sheet assessment. The required input data referred to in technical and national standards introducing European standards shall be entered in the calculation. Furthermore, for the purposes of the Order, the following provisions shall apply:
(a) calculation of energy requirements
1. total heat flow
for each building zone of z and each calculation period n, the heat flow shall be determined by means of a transverse for the internal calculation temperature in the building or in the building zone (° C). The temperature of the adjacent space, environment or zone to the construction i (° C) and the outer temperature shall be determined according to technical standard ČSN 730540-3. For the purposes of this decree, the duration values of the calculation period t (Ms) may be used, see Table 1.
Table 1 - Conversion of months to Ms
| Měsíc | Počet dní | th (hodiny) | t (Ms) | Měsíc | Počet dní | th (hodiny) | t (Ms) | |
|---|---|---|---|---|---|---|---|---|
| Leden | 31 | 744 | 2,6784 | Červenec | 31 | 744 | 2,6784 | |
| Únor | 28 | 672 | 2,4192 | Srpen | 31 | 744 | 2,6784 | |
| Březen | 31 | 744 | 2,6784 | Září | 30 | 720 | 2,592 | |
| Duben | 30 | 720 | 2,592 | Říjen | 31 | 744 | 2,6784 | |
| Květen | 31 | 744 | 2,6784 | Listopad | 30 | 720 | 2,592 | |
| Červen | 30 | 720 | 2,592 | Prosinec | 31 | 744 | 2,6784 |
2. heat gains from internal heat sources
Table 2 - Time share of operation of fAPP and average specific heat production from qAPP appliances
| Typ budovy | fAPP | qAPP |
|---|---|---|
| Hotel | 0,50 | 4 |
| Restaurace | 0,25 | 10 |
| Administrativní | 0,20 | 15 |
| Nemocnice | 0,20 | 15 |
| Vzdělávací zařízení | 0,15 | 5 |
| Sportovní zařízení | 0,25 | 4 |
| Obchodní | 0,25 | 10 |
Table 3 - Variable heat production from appliances and inhabitants qAPP + OCC
| Typ budovy | qAPP+OCC |
|---|---|
| Rodinný, bytový dům | 6,00 |
The heat released from the lighting shall be determined according to the variations in electricity consumption, taking into account the annual average for each calculation period considered n, (-). For the purposes of this decree, a continuous-use object which does not have the share of combined artificial lighting of the value of dLI, n according to Table 4 may be used.
Table 4 - National monthly values of the dLI parameter, n
| Měsíc | dLI,n | Měsíc | dLI,n | |
|---|---|---|---|---|
| Leden | -0,9 | Červenec | -0,94 | |
| Únor | -0,91 | Srpen | -0,93 | |
| Březen | -0,92 | Září | -0,91 | |
| Duben | -0,93 | Říjen | -0,91 | |
| Květen | -0,94 | Listopad | -0,89 | |
| Červen | -0,94 | Prosinec | -0,88 |
Table 5 - Annual number of hours of activity taking into account the type of building
| Typ budovy | Roční počet hodin činnosti | ||
|---|---|---|---|
| tD | tN | ttotal | |
| Hotely | 3 000 | 2 000 | 5 000 |
| Restaurace | 1250 | 1 250 | 2 500 |
| Administrativní | 2 250 | 250 | 2 500 |
| Nemocnice | 3 000 | 2 000 | 5 000 |
| Vzdělávací zařízení | 1800 | 200 | 2 000 |
| Sportovní zařízení | 2 000 | 2 000 | 4 000 |
| Obchodní | 3 000 | 2 000 | 5 000 |
Table 6 - Effects of daylight in buildings with lighting regulation
| Vliv denního světla | ||
|---|---|---|
| Typ budovy | Způsob ovládání | FD |
| Administrativní, sportovní zařízení, | Ruční | 1,0 |
| Stmívání fotobuňkou – stálá osvětlenost | 0,9 | |
| Stmívání fotobuňkou – stálá osvětlenost se snímáním denního světla | 0,8 | |
| Hotely, restaurace, obchodní | Ruční | 1,0 |
| Stmívání fotobuňkou – stálá osvětlenost | 0,9 | |
| Nemocnice a vzdělávací zařízení | Ruční | 1,0 |
| Stmívání fotobuňkou – stálá osvětlenost | 0,9 | |
| Stmívání fotobuňkou – stálá osvětlenost se snímáním denního světla | 0,7 | |
| Rodinné a bytové domy | Ruční | 1,0 |
| Stmívání fotobuňkou – stálá osvětlenost | 0,9 | |
| Stmívání fotobuňkou – stálá osvětlenost se snímáním denního světla | 0,8 | |
Note: The above values apply to at least 60% of the lighting installed controlled by the said control type
Table 7 - Influence of occupancy for buildings with lighting control
| Vliv obsazenosti | ||
|---|---|---|
| Typ budovy | Způsob ovládání | FO |
| Administrativní a vzdělávací zařízení | Ruční | 1,0 |
| Automatické pro ≤ 60% zapojeného příkonu | 0,9 | |
| Restaurace, sportovní zařízení, obchodní | Ruční | 1,0 |
| Hotely | Ruční | 0,7 |
| Nemocnice | Ruční (z části automatické ovládání) | 0,8 |
| Rodinné a bytové domy | Ruční | 1,0 |
Note: These values apply to automatic control with a sensor set up for at least one internal space and in large spaces at least one per 30 m2
3. solar thermal gains
For the determination of the effective collection area of glazed areas, the correction factor of the frame (-), which is the proportion of the transparent area and the total area of the glazed element, shall be taken to be the value FF = 0,3 for heating and 0,2 for cooling. The degree of use of thermal gains for heating shall be determined on the basis of numerical reference values a0, H and τ0, H and depends on the time when the building zone is used. It shall be determined in accordance with Table 8 or with the time limit.
Table 8 - Values of numerical parameters a0, H and reference time constants τ0, H
| Typ budovy | a0,H | τ0,H | |
|---|---|---|---|
| Trvale vytápěné | Měsíční výpočetní metoda | 1,0 | 15 |
| 0,8 | 70 | ||
The degree of use of heat losses for cooling for each month n and for each building zone z depends on the reference number parameter a0, C (-) and the reference time constant τ0, C (h) according to Table 9 or is determined from the time occupancy of the building.
Table 9 - Values of numerical parameters a0, C and reference time constants τ0, C
| Typ budovy | a0,C | τ0,C | |
|---|---|---|---|
| Trvale chlazené | Měsíční výpočetní metoda | 1,0 | 15 |
| 1,0 | 15 | ||
The time constant of the building in heating and cooling mode (h) shall be determined on the basis of the internal heat capacity of the building Cm (kJ / m2K), according to Table 10.
Table 10 - Internal thermal capacity for selected structures
| Vnitřní tepelná kapacita budovy | Cm |
|---|---|
| Konstrukce lehká – měrná hmotnost do 600 kg/m3 | 180 |
| Konstrukce střední – měrná hmotnost > 600 kg/m3 | 324 |
| Konstrukce těžká – měrná hmotnost > 1000 kg/m3 | 468 |
(b) calculation of energy supplied
1. supplied heating energy
is the calculation of where the efficiency of energy production is the source? the gene; H; c; i (-) the value of which is determined in accordance with Government Decree No. 25 / 2003 Coll., and Decree No. 150 / 2001 Coll. If the source of energy is the heat pump, then? gene; H = 1. Efficiency of energy source regulation i? gene; H; ctrl; i (-) is determined according to Table 11 if the source of energy is the heat pump, then? gene; H; ctrl = 1.
Table 11 - Efficiency of energy source regulation ηgen; H; ctrl
| Typ regulace | ηgen;H;ctrl |
|---|---|
| Ruční | 0,95 |
| Automatická | 0,97 |
COPgen; H; c; i (-) is the ratio between the heat output and the power input of the heat source based on both heat pump and driven by electricity or gas. Systems without heat pump have COPgen; H; c, i = 1. The COPgen ratio value; H; c, i is determined according to Table 12, where parameters are given at the defined temperature of the primary and heating medium.
Table 12 - Examples of COPgen; H; c, even for heat pump systems
| Tepelný zdroj - teplota primárního média (°C) | Teplotní úroveň potřeby tepla | |||||
|---|---|---|---|---|---|---|
| θsupp < 35 °C | 35 °C ≤ θsupp < 45 °C | 45 °C ≤ θsupp< 55 °C | ||||
| EHP | GHP | EHP | GHP | EHP | GHP | |
| Země (0°C) / vzduch (7°C) | 3,4 | 1,6 | 3,8/4,9 | 1,5 | 2,5/3,2 | 1,4 |
| Odpadní teplo (20°C) | 6,1 | 2,6 | 5,1 | 2,2 | 4,4 | 2,0 |
| Podzemní voda (10°C) | 4,7 | 2,1 | 5,3 | 1,9 | 3,5 | 1,8 |
| Povrchová voda (5°C) | 4,1 | 1,9 | 4,5 | 1,8 | 2,9 | 1,7 |
Note: EEA - Power driven heat pump
GHP - gas driven heat pump
θsupp - is the temperature of the heating water supplied from the heat pump to the heating system.
2. heat energy consumption for heating by units
the unit's specific air flow rate shall be determined as the sum of all major specific air flows through zones due to mechanical ventilation in the month. The correction ratio fc; vent (-) is introduced for control on the ventilation unit, which reduces the supply of outdoor air. Its values are set out in Table 13.
Table 13 - Measures reducing outdoor air supply for ventilation units
| Větrací systém s instalovaným ovládáním | fc;vent |
|---|---|
| Ovládání snižující tok vzduchu nejméně na 80% maximální kapacity | 0,8 |
| Ovládání snižující tok vzduchu nejméně na 60% maximální kapacity | 0,6 |
| Ovládání snižující tok vzduchu nejméně na 40% maximální kapacity | 0,4 |
| Všechny ostatní případy | 1 |
3. energy supplied for cooling
COPgen; C; c; i (-) is the ratio between cooling power and cold power i. Its values are set out in Table 14.
Table 4 - Examples of COPgen; C values for cooling sources
| Zdroj dodávky chladu | COPgen;C |
|---|---|
| Kompresorové chlazení - nepřímé zpětné chlazení vodou | |
| Pístový a scroll kompresor (15 – 1 500 kW) | 3,7 |
| Šroubový kompresor (200 – 2 000 kW) | 4,5 |
| Turbokompresor (500 – 8 000 kW) | 5,1 |
| Kompresorové chlazení - přímé zpětné chlazení vzduchem | |
| Pístový a scroll kompresor (15 – 1 500 kW) | 2,9 |
| Šroubový kompresor (200 – 2 000 kW) | 3,3 |
| Přímé chlazení vzduchu v zóně - kompaktní systémy (<15 kW) | |
| Kompaktní okenní klimatizátor | 2,6 |
| Split systém | 2,7 |
| Multi-Split systém | 2,8 |
| Přímé chlazení vzduchu v zóně (>10 kW) | |
| VRV systém s proměnným průtokem chladiva | 33,5 |
| Absorpční chlazení | 0,7 |
4. auxiliary energy consumption for heating and cooling
the energy consumption of the pumping work in the calculation period n is determined on the basis of the weighting factor for the control of the heating system fc; H (-) and the weighting factor for the control of the cooling system fc; C (-). Their values are set out in Table 15.
Table 15 - Weight factor of control of pumps fc; H and fc; C
| Typ čerpadel | fc;H, fc;C |
|---|---|
| Jednootáčkové | 1,00 |
| Tříotáčkové | 0,68 |
| S proměnnými otáčkami | 0,54 |
5. auxiliary energy consumption for mechanical ventilation
the calculation period n shall be determined following the weighting factor for the control of the fan propulsion of fc; vent (-), the values of which shall be determined in accordance with Table 16.
Table 16 - Weight factor for the control of fan drive
| Typ pohonu | fc,vent |
|---|---|
| Jednootáčkový pohon | 1,00 |
| Tříotáčkový pohon | 0,68 |
| Pohon s proměnnými otáčkami | 0,54 |
The average electricity consumption of event fans (WS / m3) is determined in accordance with Table 17.
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Regulation Information
| Citation | Decree No. 148 / 2007 Coll., on the energy performance of buildings |
|---|---|
| Regulation Type | Order |
| Author | - |
| Collection | Code of Laws |
| Date of Promulgation | 27.06.2007 |
|---|---|
| Effective from | 01.07.2007 |
| Effective until | - |
| Status | Valid |
The regulation text is for informational purposes only.
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