1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS ISO 18292:2011Energy performance offenestration systems forresidential buildings Calculation procedureIncorporating corrigendum April 2012BS ISO 18292:2011National forewordThi
2、s British Standard is the UK implementation of ISO 18292:2011, incorporating corrigendum April 2012.The UK participation in its preparation was entrusted by Technical Committee B/540, Energy performance of materials components and buildings, to Subcommittee B/540/8, Mirror committee for ISO/TC 163 -
3、 Thermal Performance and Energy use in the built Envir-onment.A list of organizations represented on this subcommittee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct applicatio
4、n. The British Standards Institution 2012. Published by BSI Standards Limited 2012.ISBN 978 0 580 78795 9ICS 91.120.10Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committe
5、e on 30 April 2011.Amendments/corrigenda issued since publicationDate Text affected30 April 2012 Implementation of ISO corrigendum April 2012: Equation (20) replacedBRITISH STANDARDReference numberISO 18292:2011(E)ISO 2011INTERNATIONAL STANDARD ISO18292First edition2011-04-01Energy performance of fe
6、nestration systems for residential buildings Calculation procedure Performance nergtique des systmes de fentrage pour les btiments rsidentiels Mode opratoire de calcul PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensing policy, this file may be printed or
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11、x + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO 2012BS ISO 18292:2011 ISO 18292:2011 (E)iiiContents Page Foreword iv Introduction.v 1 Scope1 2 Normative references1 3 Terms and definitions .2 4 Symbols and units.3 5 Principle .4 5.1 Introduction4 5.2 Heati
12、ng energy performance5 5.3 Cooling energy performance .5 6 Methodology and basic equations 6 6.1 General .6 6.2 The fenestration energy performance for heating .9 6.3 The fenestration energy performance for cooling .9 6.4 The heat balance elements.10 6.5 Assessment of the solar control potential of
13、the rated fenestration system12 7 Climate data .13 7.1 Introduction13 7.2 External air temperature .13 7.3 Solar radiation .13 7.4 Wind speed 13 8 Basic thermal and solar-optical fenestration properties.14 8.1 Introduction14 8.2 Thermal transmittance, U-value .14 8.3 Total solar energy transmittance
14、 or solar factor, g-value14 8.4 Daylight potential 14 8.5 Air infiltration (air permeability) and ventilation 15 9 Reference building 16 9.1 Introduction16 9.2 Overview of data17 10 Assessment report17 Annex A (informative) Explanation of gain/loss utilization factor method used in ISO 13790 for the
15、 fenestration system energy balance equation .18 Annex B (informative) Assessment of the solar control potential of the rated fenestration system.23 Annex C (informative) Example of the calculation of PE, H,wand PE, C,wusing a monthly method 26 Bibliography32 ISO 2012BS ISO 18292:2011 ISO 18292:2011
16、 (E)iv Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for wh
17、ich a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all
18、matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are ci
19、rculated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held respo
20、nsible for identifying any or all such patent rights. ISO 18292 was prepared by Technical Committee ISO/TC 163, Thermal performance and energy use in the built environment, Subcommittee SC 2, Calculation methods. ISO 2012BS ISO 18292:2011 ISO 18292:2011 (E)vIntroduction This International Standard s
21、pecifies a procedure for the determination of energy rating of window and door products and other products that are installed in building envelope openings, also known as fenestration systems. To enable the fenestration industry and their clients to utilize energy performance instead of thermal tran
22、smittance to assess their products, there is a need for a simple, clear, accurate and transparent procedure that enables the energy performance of these products to be assessed using national climate data and nationally selected reference buildings. This International Standard specifies detailed pro
23、cedures for calculating the energy performance of fenestration products. In this International Standard, the energy performance is derived from thermal transmittance, solar gain, and air infiltration data obtained using standard procedures. Converting that value into an energy rating for the fenestr
24、ation system is the responsibility of each countrys appropriate national body. It is intended that the details of that rating system be published in a publicly available document. These procedures require the use of reference conditions, which differ between countries and can represent conditions ot
25、her than actual. Allowing different reference conditions enables each country to determine its own reference values in accordance with local conditions. As long as these conditions are publicly available and the calculation is based on standardized procedures as specified in this International Stand
26、ard, it is possible to calculate the energy performance of a specific product to the desired national reference conditions. ISO 2012BS ISO 18292:2011 ISO 18292:2011 (E)BS ISO 18292:2011INTERNATIONAL STANDARD ISO 18292:2011(E)1Energy performance of fenestration systems for residential buildings Calcu
27、lation procedure 1 Scope This International Standard specifies a procedure for calculation of the energy performance of fenestration systems used in residential buildings, for rating of fenestration systems, doors and skylights, including the effects of frame, sash, glazing, and shading components.
28、This International Standard specifies procedures for the calculation of the heating and cooling energy use in residential buildings, internal and external climatic conditions, and relevant building characteristics. These procedures can accommodate all climatic conditions and installation details. It
29、 is the responsibility of the appropriate regulatory authority to identify the clauses of this International Standard to be applied in their area of jurisdiction and the climatic data and reference building specification(s) to be used. 2 Normative references The following referenced documents are in
30、dispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 6613, Windows and door height windows Air permeability test ISO 7345, Thermal insulati
31、on Physical quantities and definitions ISO 9050, Glass in building Determination of light transmittance, solar direct transmittance, total solar energy transmittance, ultraviolet transmittance and related glazing factors ISO 9288, Thermal insulation Heat transfer by radiation Physical quantities and
32、 definitions ISO 10077-1, Thermal performance of windows, doors and shutters Calculation of thermal transmittance Part 1: General ISO 10077-2, Thermal performance of windows, doors and shutters Calculation of thermal transmittance Part 2: Numerical method for frames ISO 12567-1, Thermal performance
33、of windows and doors Determination of thermal transmittance by the hot-box method Part 1: Complete windows and doors ISO 12567-2, Thermal performance of windows and doors Determination of thermal transmittance by hot box method Part 2: Roof windows and other projecting windows ISO 13790:2008, Energy
34、 performance of buildings Calculation of energy use for space heating and cooling ISO 15099, Thermal performance of windows, doors and shading devices Detailed calculations ISO 15927-1, Hygrothermal performance of buildings Calculation and presentation of climatic data Part 1: Monthly means of singl
35、e meteorological elements ISO 20122 ISO 15927-4, Hygrothermal performance of buildings Calculation and presentation of climatic data Part 4: Hourly data for assessing the annual energy use for heating and cooling EN 410, Glass in building Determination of luminous and solar characteristics of glazin
36、g EN 1026, Windows and doors Air permeability Test method EN 13363-1, Solar protection devices combined with glazing Calculation of solar and light transmittance Part 1: Simplified method EN 13363-2, Solar protection devices combined with glazing Calculation of total solar energy transmittance and l
37、ight transmittance Part 2: Detailed calculation method 3 Terms and definitions For the purposes of this document, the terms and definitions given in ISO 7345 and ISO 9288 and the following apply. 3.1 solar heat gain g total solar energy transmittance (solar factor) NOTE 1 The solar heat gain of the
38、whole fenestration system, including glazing, frame and solar shading device, is denoted gw. NOTE 2 The total solar energy transmittance is also known as the solar heat gain coefficient with the acronym SHGC. 3.2 daylight potential DP DPpotential of a fenestration system to supply a building with da
39、ylight NOTE Daylight potential is not incorporated into the energy performance value. 3.3 thermal transmittance U heat flow rate in the steady state divided by area and by the temperature difference between the surroundings on each side of a system ISO 7345:1987, 2.12 NOTE The thermal transmittance
40、of the whole fenestration system, including glazing, frame and solar shading device, is denoted Uw. 3.4 energy performance of a fenestration system EP PEcalculated annual energy need divided by area for heating and cooling caused by the fenestration system, in the reference building under the refere
41、nce climatic conditions NOTE This International Standard defines a separate energy performance value for heating and cooling conditions. ISO 2012BS ISO 18292:2011 ISO 18292:2011 (E)34 Symbols and units Symbols and units used are in accordance with ISO 7345 and ISO 9288. The quantities which are spec
42、ific to this International Standard are also defined in Table 1. Table 1 Symbols and units Symbol Quantity Unit A area m2C effective heat capacity of a conditioned space J/K c specific heat capacity J/(kgK) F factor g total solar energy transmittance of a building element H heat transfer coefficient
43、 W/K h surface coefficient of heat transfer W/(m2K) Isolsolar irradiance W/m2L overall air infiltration rate m3/s PEannual energy performance kWh/m2Q quantity of heat kWh qV(volume) airflow rate m3/s R thermal resistance m2K/W T thermodynamic temperature K t time, period of time hours U thermal tran
44、smittance W/(m2K) absorption coefficient of a surface for solar radiation tilt angle heat balance ratio emissivity of a surface for long-wave thermal radiation efficiency, utilization factor Celsius temperature C heat capacity per area J/(m2K) density kg/m3r albedo Stefan-Boltzmann constant ( = 5,67
45、 108) W/(m2K4) time constant h DPdaylight potential heat flow rate, thermal power W point thermal transmittance W/K linear thermal transmittance W/(mK) NOTE These symbols are, where possible, the same as those in ISO 13790. In this International Standard, the energy performance values are calculated
46、 in kilowatt hours per square metre. Users may convert these values to other units as appropriate. The subscripts indicated in Table 2 are used. ISO 2012BS ISO 18292:2011 ISO 18292:2011 (E)4 Table 2 Subscripts avg time-average m mass-related conductance or capacitance base base nd need C cooling, ca
47、pacity ob obstacles C,nd cooling need, or building need for cooling or orientation DP daylight potential p pressure E energy pre-cool pre-coole external, exterior, envelope pre-heat pre-heat g ground ref reference gl glazing, glazed element s designated space gn gains seas seasonal H heating, or hor
48、izontal set setpoint H,nd heating need, or building need for heating sh shading hor horizontal sol solar (heat gains) ht heat transfer tr transmission (heat transfer) i, j, k, m, n dummy integers V volume int internal (heat and temperature) ve ventilation (heat transfer) ls loss w fenestration syste
49、m m monthly, designated month difference NOTE 1 These subscripts are in line with the subscripts used in ISO 13790. NOTE 2 Variables are also defined when they appear for the first time. 5 Principle 5.1 Introduction Energy performance of the fenestration system is expressed through energy performance indices, PE, one representative of the heating season and one representative of the cooling season. This procedure shall be followed for al
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