1、BS EN ISO15927-2:2009ICS 07.060; 91.120.10NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDHygrothermalperformanceof buildings Calculation andpresentation ofclimatic dataPart 2: Hourly data for design coolingload (ISO 15927-2:2009)This British Standardwas publish
2、ed under theauthority of the StandardsPolicy and StrategyCommittee on 31 January2010 BSI 2010ISBN 978 0 580 69475 2Amendments/corrigenda issued since publicationDate CommentsBS EN ISO 15927-2:2009National forewordThis British Standard is the UK implementation of EN ISO15927-2:2009.The UK participati
3、on in its preparation was entrusted to TechnicalCommittee B/540/8, Mirror committee for ISO/TC 163.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisionsof a contract. Users are respon
4、sible for its correct application.Compliance with a British Standard cannot confer immunityfrom legal obligations.EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN ISO 15927-2February 2009ICS 07.060; 91.120.10English VersionHygrothermal performance of buildings - Calculation andpresentation of clima
5、tic data - Part 2: Hourly data for designcooling load (ISO 15927-2:2009)Performance hygrothermique des btiments - Calcul etprsentation des donnes climatiques - Partie 2: Donneshoraires pour la charge de refroidissement de conception(ISO 15927-2:2009)Wrme- und feuchteschutztechnisches Verhalten vonGe
6、buden - Berechnung und Darstellung von Klimadaten -Teil 2: Stundendaten zur Bestimmung der Khllast (ISO15927-2:2009)This European Standard was approved by CEN on 17 January 2009.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this E
7、uropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the CEN Management Centre or to any CEN member.This European Standard exists in three official versions (Engli
8、sh, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cy
9、prus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMI
10、T EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: Avenue Marnix 17, B-1000 Brussels 2009 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN ISO 15927-2:2009: EBS EN ISO 15927-2:2009EN ISO 15927-2:2009 (E) 3 Fore
11、word This document (EN ISO 15927-2:2009) has been prepared by Technical Committee CEN/TC 89 “Thermal performance of buildings and building components“, the secretariat of which is held by SIS, in collaboration with Technical Committee ISO/TC 163 “Thermal performance and energy use in the built envir
12、onment“. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by August 2009, and conflicting national standards shall be withdrawn at the latest by August 2009. Attention is drawn to the possibility that
13、 some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to
14、implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzer
15、land and the United Kingdom. BS EN ISO 15927-2:2009ISO 15927-2:2009(E) ISO 2009 All rights reserved iiiContents Page Foreword iv Introduction.v 1 Scope1 2 Normative references1 3 Terms, definitions, symbols and units2 3.1 Terms and definitions .2 3.2 Symbols and units.3 4 Method of determination.3 4
16、.1 Sources of data3 4.2 Identification of the design days .3 5 Data for the design of air conditioning systems5 6 Presentation of the design days 6 7 Presentation of the data for the design of air conditioning systems 6 Annex A (informative) Example of the procedure for identifying a design day .7 B
17、S EN ISO 15927-2:2009ISO 15927-2:2009(E) iv ISO 2009 All rights reservedForeword 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 tech
18、nical committees. Each member body interested in a subject for which 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
19、 with the International Electrotechnical Commission (IEC) on all 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 I
20、nternational Standards adopted by the technical committees are circulated 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
21、 may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 15927-2 was prepared by the European Committee for Standardization (CEN) Technical Committee CEN/TC 89, Thermal performance of buildings and building components, in collaboratio
22、n with Technical Committee ISO/TC 163, Thermal performance and energy use in the built environment, Subcommittee SC 2, Calculation methods, in accordance with the Agreement on technical cooperation between ISO and CEN (Vienna Agreement). ISO 15927 consists of the following parts, under the general t
23、itle Hygrothermal performance of buildings Calculation and presentation of climatic data: Part 1: Monthly means of single meteorological elements Part 2: Hourly data for design cooling load Part 3: Calculation of a driving rain index for vertical surfaces from hourly wind and rain data Part 4: Hourl
24、y data for assessing the annual energy use for heating and cooling Part 5: Data for design heat load for space heating Part 6: Accumulated temperature differences (degree-days) BS EN ISO 15927-2:2009ISO 15927-2:2009(E) ISO 2009 All rights reserved vIntroduction The choice of design load for space co
25、oling is a matter of balancing user needs against cost. On the one hand, users expect a cooling system to maintain the internal temperatures needed for health and comfort; on the other hand, very high cooling loads can arise from extreme meteorological conditions. It is usually uneconomic to design
26、cooling systems for rare extremes, as this leads to high capital cost and, usually, to lower operational efficiency of the system. The highest cooling loads occur with a combination of high daily mean dry-bulb temperature and dewpoint temperature, high daily total irradiation, low daily swing in tem
27、perature and low wind speed. Data are therefore needed on the values of these parameters when they occur in combination at specific return periods. BS EN ISO 15927-2:2009BS EN ISO 15927-2:2009INTERNATIONAL STANDARD ISO 15927-2:2009(E) ISO 2009 All rights reserved 1Hygrothermal performance of buildin
28、gs Calculation and presentation of climatic data Part 2: Hourly data for design cooling load 1 Scope This part of ISO 15927 gives the definition and specifies methods of calculation and presentation of the monthly external design climate to be used in determining the design cooling load of buildings
29、 and the design of air conditioning systems. Depending on the building type, a range of parameters can be used to define the individual days of hourly or three-hourly data in each calendar month that impose a cooling load likely to be exceeded on 5 %, 2 % and 1 % of days. The parameters that are alw
30、ays used in the selection are dry-bulb temperature and total global solar irradiation (or sunshine hours). The daily swing in dry-bulb temperature, dewpoint temperature and wind speed and any other parameters relevant to particular buildings may also be included. Hourly peak values of dry-bulb tempe
31、rature and dewpoint temperature are needed for the design of air conditioning systems. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of
32、 the referenced document (including any amendments) applies. ISO 15927-1, Hygrothermal performance of buildings Calculation and presentation of climatic data Part 1: Monthly means of single meteorological elements World Meteorological Organization (WMO), Guide to Meteorological Instruments and Metho
33、ds of Observation, No. 8, 6th Edition, 19961)1) World Meteorological Organization: http:/www.wmo.ch/pages/catalogue/New%20HTML/frame/engfil/8.html. BS EN ISO 15927-2:2009ISO 15927-2:2009(E) 2 ISO 2009 All rights reserved3 Terms, definitions, symbols and units 3.1 Terms and definitions For the purpos
34、es of this document, the terms and definitions given in ISO 15927-1 and the following apply. 3.1.1 hourly value average of instantaneous values of a parameter measured during an hour or value observed at a particular moment (e.g. on the hour) NOTE Hourly values can be estimated by interpolation from
35、 data measured at three-hour intervals. 3.1.2 daily mean value average of 24 hourly values or eight 3-hourly values of a parameter during a day from 00:00 to 23:00 or 01:00 to 24:00 3.1.3 dry-bulb temperature air temperature measured in a thermometer screen or with similar shielding from solar radia
36、tion 3.1.4 daily swing in dry-bulb temperature difference between the maximum and minimum dry-bulb temperatures in one day 3.1.5 dewpoint temperature temperature to which air is cooled to become saturated with the same water vapour content 3.1.6 global solar irradiation on a horizontal surface total
37、 solar energy falling on a horizontal surface in a given period NOTE Global solar irradiation is the sum of the direct and diffuse solar irradiation received by the surface in the period. 3.1.7 summer external design day day from any calendar month with a specified return period for extreme values o
38、f the significant meteorological parameters, for example: temperature, temperature swing, dewpoint temperature, solar irradiation and wind speed BS EN ISO 15927-2:2009ISO 15927-2:2009(E) ISO 2009 All rights reserved 33.2 Symbols and units Symbol Quantity Unit sI daily total global solar irradiation
39、kWh/(m2d) sh daily total sunshine hours h v wind speed m/s v daily mean wind speed m/s dry-bulb temperature C daily mean dry-bulb temperature C ddewpoint temperature C d daily mean dewpoint temperature C swdaily swing in dry-bulb temperature K Subscript x%, as in px%,represents the value of a parame
40、ter that is exceeded on 100 - x % of days. 4 Method of determination 4.1 Sources of data Hourly files of meteorological data, containing at least the dry-bulb temperature and global solar irradiation or sunshine hours for at least 10 years, shall be analysed. Other parameters, such as dewpoint tempe
41、rature or daily swing in temperature and wind speed, may be included if design days are needed for specific purposes. The parameters used shall be fully reported. NOTE Global solar irradiation is preferred to sunshine hours as it gives a better index of the performance of the building; however, sola
42、r radiation data are available from very few stations compared to sunshine hours. Methods for calculating meteorological parameters are given in ISO 15927-1. The meteorological data shall have been measured in accordance with WMO Guide No. 8, 1996. 4.2 Identification of the design days 4.2.1 The pro
43、cedure in 4.2.2 to 4.2.5 describes the use of dry-bulb temperature, global solar irradiation or sunshine hours, dewpoint temperature, daily temperature swing and wind speed to construct design days. The same principles may be applied to the use of any other parameters appropriate to specific buildin
44、gs. 4.2.2 Identify the parameters that are to be used to construct the design days. Daily mean dry-bulb temperature and daily total global solar radiation or daily total sunshine hours, shall be included in all cases; daily mean dewpoint temperature, daily temperature swing and daily mean wind speed
45、 may also be included. BS EN ISO 15927-2:2009ISO 15927-2:2009(E) 4 ISO 2009 All rights reservedFor each day in the data set, calculate: a) the daily mean dry-bulb temperature, ; b) the daily total global solar irradiation,sI , or daily total sunshine hours,sh ; c) if relevant, the daily mean dewpoin
46、t temperature,d , the daily mean wind speed, v , and the daily swing in dry-bulb temperature, sw . 4.2.3 For each calendar month in the data set (i.e. all the January data taken together, all the February data taken together, etc.) find the values of daily mean temperature and daily total solar irra
47、diation or daily total sunshine hours exceeded on 1 %, 2 % and 5 % of days. If relevant, find the values of the daily mean dewpoint temperature that are reached or exceeded on 1 %, 2 % and 5 % of days and the values of the daily temperature swing and daily mean wind speed that are exceeded on 99 %,
48、98 % and 95 % of days. These are: a) daily mean dry-bulb temperature,99% , 98% and 95% ; b) daily total global solar irradiation, s,99%I , s,98%I and s,95%I ; c) daily total sunshine hours, s,99%h ,s,98%h and s,95%h ; d) daily mean dewpoint temperature, d,99% , d,98% andd,95% ; e) daily swing in dry
49、-bulb temperature, sw,1% , sw,2% , and sw,5% ; f) daily mean wind speed, 1%v , 2%v and 5%v . 4.2.4 Define the initial intervals for each of the parameters to be the following: a) daily mean dry-bulb temperature,%x 0,5 C; b) daily total global solar irradiation, s, %xI 0,05 kWh/(m2d); c) daily total sunshine hours, s, %xh 0,5 h; d) if used, daily mean dewpoint temperature, d, %x 0,5 C; e) if used, daily swing in dry-bulb temperature, sw, %x 0,5 K; f) if used, daily mean wind s
