DIN EN ISO 15927-5-2012 Hygrothermal performance of buildings - Calculation and presentation of climatic data - Part 5 Data for design heat load for space heating (ISO 15927-5 2004.pdf

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1、March 2012 Translation by DIN-Sprachendienst.English price group 8No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 9

2、1.120.10; 91.120.30!$z*“1870756www.din.deDDIN EN ISO 15927-5Hygrothermal performance of buildings Calculation and presentation of climatic data Part 5: Data for design heat load for space heating English translation of DIN EN ISO 15927-5:2012-03Wrme- und feuchteschutztechnisches Verhalten von Gebude

3、n Berechnung und Darstellung von Klimadaten Teil 5: Daten zur Bestimmung der Norm-Heizlast fr die Raumheizung(ISO 15927-5:2004 + Amd 1:2011) (enthlt nderung A1:2011)Englische bersetzung von DIN EN ISO 15927-5:2012-03Performance hygrothermique des btiments Calcul et prsentation des donnes climatiques

4、 Partie 5: Donnes pour la charge calorifique de conception pour le chauffage des locaux(ISO 15927-5:2004 + Amd 1:2011) (Amendement A1:2011 inclus)Traduction anglaise de DIN EN ISO 15927-5:2012-03SupersedesDIN EN ISO 15927-5:2005-03www.beuth.deDocument comprises 12 pagesIn case of doubt, the German-l

5、anguage original shall be considered authoritative.(ISO 15927-5:2004 + Amd 1:2011) (includes Amendment A1:2011)03.12 DIN EN ISO 15927-5:2012-03 2 A comma is used as the decimal marker. National foreword This standard has been prepared by Technical Committee ISO/TC 163 “Thermal performance and energy

6、 use in the built environment” in collaboration with Technical Committee CEN/TC 89 “Thermal performance of buildings and building components” (Secretariat: SIS, Sweden). The responsible German body involved in its preparation was the Normenausschuss Bauwesen (Building and Civil Engineering Standards

7、 Committee), Joint Committee NA 005-56-20 GA Energetische Bewertung von Gebuden. The start and finish of text introduced or altered by amendment is indicated in the text by tags !“. Amendments This standard differs from DIN EN ISO 15927-5:2005-03 as follows: a) normative references have been updated

8、; b) the definition for “daily maximum temperature” (see 3.1.5) has been revised; c) the definition for “daily minimum temperature” (see 3.1.6) has been revised. Previous editions DIN EN ISO 15927-5: 2005-03 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 15927-5 November 2004 +A1 November

9、2011 English version Hygrothermal performance of buildings Calculation and presentation of climatic data Part 5: Data for design heat load for space heating (ISO 15927-5:2004 + Amd 1:2011) Performance hygrothermique des btiments Calcul et prsentation des donnes climatiques Partie 5: Donnes pour la c

10、harge calorifique de conception pour le chauffage des locaux (ISO 15927-5:2004 + Amd 1:2011) Wrme- und feuchteschutztechnisches Verhalten von Gebuden Berechnung und Darstellung von Klimadaten Teil 5: Daten zur Bestimmung der Norm-Heizlast fr die Raumheizung (ISO 15927-5:2004 + Amd 1:2011) EN ISO 159

11、27-5:2004 was approved by CEN on 2004-10-27 and Amendment A1:2011 on 2011-11-14. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and b

12、ibliographical references concerning such national standards may be obtained on application to the Management Centre or to any CEN member. The European Standards exist in three official versions (English, French, German). A version in any other language made by translation under the responsibility o

13、f a CEN member into its own language and notified to the Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,

14、 Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Mar

15、nix 17, B-1000 Brussels 2011 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 15927-5:2004 + A1:2011 EICS 91.120.10; 07.060 EN ISO 15927-5:2004 + A1:2011 (E) Contents Page Foreword to EN ISO 15927-5:2004 3 Foreword to EN ISO 159

16、27-5:2004/A1:2011 .3 Introduction .4 1 Scope 5 2 Normative references 5 3 Terms, definitions, symbols and units 5 4 Methods of calculation 6 5 Coincident wind speed 8 6 Dominant wind direction .8 7 Reference altitude 8 8 Presentation of data 9 9 Data representing a geographical area, region or zone

17、10 DIN EN ISO 15927-5:2012-03 2 EN ISO 15927-5:2004 + A1:2011 (E) Foreword to EN ISO 15927-5:2004 This document (EN ISO 15927-5:2004) has been prepared by Technical Committee ISO/TC 163 “Thermal insulation” in collaboration with Technical Committee CEN/TC 89 “Thermal performance of buildings and bui

18、lding components”, the secretariat of which is held by SIS. 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 May 2005, and conflicting national standards shall be withdrawn at the latest by May 200

19、5. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,

20、 Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. Endorsement notice The text of ISO 15927-5:2004 has been approved by CEN as EN ISO 15927-5:2004 without any modifications. Foreword to EN ISO 15927-5:2004/A1:2011

21、This document (EN ISO 15927-5:2004/A1:2011) has been prepared by Technical Committee ISO/TC 163 “Thermal performance and energy use in the built environment” in collaboration with Technical Committee CEN/TC 89 “Thermal performance of buildings and building components” the secretariat of which is hel

22、d by SIS. 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 May 2012, and conflicting national standards shall be withdrawn at the latest by May 2012. Attention is drawn to the possibility that some

23、 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 imple

24、ment this European Standard: Austria, Belgium, Bulgaria, Croatia, 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, Swi

25、tzerland and the United Kingdom. Endorsement notice The text of ISO 15927-5:2004/Amd 1:2011 has been approved by CEN as a EN ISO 15927-5:2004/A1:2011 without any modification. DIN EN ISO 15927-5:2012-03 3 EN ISO 15927-5:2004 + A1:2011 (E) Introduction The choice of design heat load for space heating

26、 is a matter of balancing user needs against cost. On the one hand, users expect a heating system to maintain the internal temperatures needed for health and comfort; on the other hand, very high heating demand arises from time to time, when a meteorological extreme occurs. It may be uneconomic to d

27、esign heating systems for rare extremes, as this can lead to high capital (initial) cost and to lower operational efficiency of the system. The practical solution is to choose an infrequent, but not extreme, climatological value as the basis for the design load. This means that from time to time hea

28、t demand will exceed the system capacity, with the result that internal temperatures will be lower than desired, or that supplementary heating will be needed (e.g. from local heaters). The methods of calculation in this part of ISO 15927 include a standard return period or frequency, which is judged

29、 to give an acceptable balance between risk of inadequate performance and cost. The definition of winter external design temperatures also needs to reflect the interaction between buildings and their external environment. Buildings possess thermal inertia and do not respond instantly to changes in w

30、eather conditions. The time delay (or lag) before internal conditions are significantly affected varies among different types of construction and heating methods. To allow for this, winter external design temperatures, calculated according to this part of ISO 15927, can be defined over a range of pe

31、riods from as short as 1 h to as long as 4 days. The influence of wind is important, as infiltration can cause a large proportion of heat loss from buildings that are not airtight; this is especially true in climates where infrequent, low temperatures are associated with high wind speeds. This part

32、of ISO 15927 specifies that average coincident wind speed and range of directions are determined for the conditions of the winter external design temperature. DIN EN ISO 15927-5:2012-03 4 1 Scope This part of ISO 15927 specifies the definition, method of calculation and method of presentation of the

33、 climatic data to be used in determining the design heat load for space heating in buildings. These include the winter external design air temperatures; the relevant wind speed and direction, where appropriate. Heat loss through the ground, which also contributes to the heat load for buildings, depe

34、nds on longer-term temperature changes; methods for calculating ground heat loss are given in ISO 133701). 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, t

35、he latest edition of the referenced document (including any amendments) applies. ISO 6243, Climatic data for building design Proposed system of symbols World Meteorological Organization: Guide to Meteorological Instruments and Methods of Observation, 6thEdition, WMO No. 8 !Deleted text“ 3 Terms, def

36、initions, symbols and units 3.1 Terms and definitions For the purposes of this standard, the terms and definitions given in ISO 6243 and the following apply. 3.1.1 design heat load maximum heat output required from the heating system of a building, in order to maintain required internal temperatures

37、 without supplementary heating 3.1.2 winter external design temperature low external air temperature with a defined return period, used to determine the design heat load of a building 1) ISO 13370, Thermal performance of buildings Heat transfer via the ground Calculation methods. EN ISO 15927-5:2004

38、 + A1:2011 (E) DIN EN ISO 15927-5:2012-03 5 EN ISO 15927-5:2004 + A1:2011 (E) 3.1.3 coincident wind speed average wind speed during a period over which temperature is averaged 3.1.4 hourly temperature average of continuously recorded air temperatures during 1 h, or in the absence of continuous measu

39、rements, the average of the air temperatures observed at regular intervals 3.1.5 daily maximum temperature !maximum dry-bulb air temperature during a day (00:00 to 23:00 or 01:00 to 24:00), taken as either the highest hourly mean temperature or the recorded extreme on a maximum thermometer“ 3.1.6 da

40、ily minimum temperatures !minimum dry-bulb air temperature during a day (00:00 to 23:00 or 01:00 to 24:00), taken as either the lowest hourly mean temperature or the recorded extreme on a minimum thermometer“ 3.1.7 n-day mean temperature average of dry-bulb air temperature on n consecutive days, whe

41、re n is one, two, three or four 3.2 Symbols and units dxdaily maximum temperature, expressed in degrees Celsius dn daily minimum temperature, expressed in degrees Celsius hm hourly mean temperature, expressed in degrees Celsius ndmn-day mean temperature, expressed in degrees Celsius *h hourly mean d

42、esign temperature, expressed in degrees Celsius *dn n-day mean design temperature, expressed in degrees Celsius NOTE The letter symbols used differ in some cases from those given in ISO 6243, mainly to comply with the developing practice in other International Standards from ISO/TC 163. However, the

43、 principles of ISO 6243 have been followed where possible. 4 Methods of calculation 4.1 Sources of data The temperatures and wind speeds used to calculate the winter external design temperature shall be measured by the methods specified by the WMO Guide No.8 !Deleted text“. 4.2 Types of winter exter

44、nal design temperature required Two main types of winter external design temperature can be calculated: an n-day mean air temperature, *dn , where n is one, two, three or four; an hourly mean air temperature, *h . DIN EN ISO 15927-5:2012-03 6 EN ISO 15927-5:2004 + A1:2011 (E) 4.3 n-day mean design t

45、emperature The n-day mean design temperature, *dn , is calculated as the n-day mean air temperature, where n is one, two, three or four, having an average return period of 1 year (e.g. occurring on average 20 times in 20 years). The n-day mean air temperature on which it is based may be calculated,

46、for every combination of n successive days, in one of several ways, depending on the data available. a) !Where hourly data are available, ndmshall be calculated as the mean of 24n hourly values between 00:00 on the first day and 23:00 on the second day, or between 01:00 on the first day and 24:00 on

47、 the second day.“ b) !Where three-hourly data are available, ndmshall be calculated as the mean of 8n three-hourly values between the first day and the final day.“ c) Where temperatures observed at 07:30 (7:30), 14:30 (14:30) and 21:30 (21:30), or at other similar times, are available, ndmshall be c

48、alculated using Equation (1) or the equivalent equation for the appropriate times: 7:30 14:30 21:301dm24niinn (1)where the summation is over one, two, three or four days. d) Where only daily maximum and daily minimum temperatures are available, a less accurate estimate relative to those derived from 4.3 a), 4.3 b) or 4.3 c) shall be obtained using Equation (2): dx dn1dm2niinn(2) where the summation is over one, two, three or four days. The choice of calculation method h