DIN EN ISO 22975-1-2017 Solar energy - Collector components and materials - Part 1 Evacuated tubes - Durability and performance (ISO 22975-1 2016) German version EN ISO 22975-1 201.pdf

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1、March 2017 English price group 16No 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 27.160!%bVS“2635148www.din.deDIN E

2、N ISO 22975-1Solar energy Collector components and materials Part 1: Evacuated tubes Durability and performance (ISO 229751:2016);English version EN ISO 229751:2016,English translation of DIN EN ISO 22975-1:2017-03Solarenergie Kollektorbauteile und materialien Teil 1: Vakuumrhren Bestndigkeit und Le

3、istungsfhigkeit (ISO 229751:2016);Englische Fassung EN ISO 229751:2016,Englische bersetzung von DIN EN ISO 22975-1:2017-03nergie solaire Composants et matriaux du collecteur Partie 1: Tubes sous vide Durabilit et performance (ISO 229751:2016);Version anglaise EN ISO 229751:2016,Traduction anglaise d

4、e DIN EN ISO 22975-1:2017-03www.beuth.deDocument comprises 35 pagesDTranslation by DIN-Sprachendienst.In case of doubt, the German-language original shall be considered authoritative.03.17 DIN EN ISO 22975-1:2017-03 2 A comma is used as the decimal marker. National foreword This document (EN ISO 229

5、75-1:2016) has been prepared by Technical Committee ISO/TC 180 “Solar energy” in collaboration with Technical Committee CEN/TC 312 “Thermal solar systems and components” (Secretariat: ELOT, Greece). The responsible German body involved in its preparation was DIN-Normenausschuss Heiz- und Raumlufttec

6、hnik (DIN Standards Committee Heating and Ventilation Technology), Working Committee NA 041-01-56 AA Solaranlagen (SpA CEN/TC 312 und ISO/TC 180). The DIN Standard corresponding to the International Standard referred to in this document is as follows: ISO 9488 DIN EN ISO 9488 National Annex NA (info

7、rmative) Bibliography DIN EN ISO 9488, Solar energy Vocabulary EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 22975-1 October 2016 ICS 27.160 English Version Solar energy - Collector components and materials - Part 1: Evacuated tubes - Durability and performance(ISO 22975-1:2016) nergie so

8、laire - Composants et matriaux du collecteur - Partie 1: Tubes sous vide - Durabilit et performance (ISO 22975-1:2016) Solarenergie - Kollektorbauteile und -materialien -Teil 1: Vakuumrhren - Bestndigkeit und Leistungsfhigkeit (ISO 22975-1:2016) This European Standard was approved by CEN on 12 Septe

9、mber 2016. 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 bibliographical references concerning such national standards may be ob

10、tained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the

11、CEN-CENELEC 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Irela

12、nd, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Cent

13、re: Avenue Marnix 17, B-1000 Brussels 2016 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 22975-1:2016 EEuropean foreword .4Introduction 61 Scope . 72 Normative references 73 Terms and definitions . 74 Classification and test

14、list . 85 Testing of material 95.1 Inspection for stones and knots . 95.1.1 General 95.1.2 Test conditions. 95.1.3 Apparatus . 95.1.4 Procedure . 95.1.5 Results 105.2 Inspection for scratches . 105.2.1 General. 105.2.2 Test conditions 105.2.3 Apparatus 105.2.4 Procedure 105.2.5 Results 115.3 Testing

15、 of solar transmittance 115.3.1 General. 115.3.2 Test conditions and apparatus 115.3.3 Procedure 115.3.4 Results 115.4 Testing of solar absorptance 115.4.1 General. 115.4.2 Test conditions and apparatus 115.4.3 Procedure 115.4.4 Results 125.5 Testing of hemispherical emittance . 125.5.1 General. 125

16、.5.2 Test conditions 125.5.3 Apparatus and procedure . 125.5.4 Results 136 Durability testing of evacuated tube . 136.1 Vacuum performance . 136.1.1 General. 136.1.2 Test conditions and apparatus 136.1.3 Procedure 146.1.4 Results 146.2 Resistance to thermal shock . 146.2.1 General. 146.2.2 Test cond

17、itions and apparatus 156.2.3 Procedure 156.2.4 Results 156.3 Resistance to impact . 156.3.1 General. 156.3.2 Principle . 156.3.3 Procedure 156.3.4 Results 15Contents PageDIN EN ISO 22975-1:2017-03 EN ISO 22975-1:2016 (E)2Foreword 56.4.2 Test conditions and apparatus 166.4.3 Procedure 166.4.4 Results

18、 167 Performance testing of evacuated tube .167.1 Tests for determination the exposure parameter 167.1.1 General. 167.1.2 Test conditions177.1.3 Apparatus 177.1.4 Procedure 187.1.5 Results 197.2 Tests for determination of sum of solar irradiation for temperature increase of double-glass evacuated tu

19、be 197.2.1 General. 197.2.2 Test conditions197.2.3 Apparatus 197.2.4 Procedure and results 197.3 Tests to determine the average heat loss coefficient of a double-glass evacuated tube .197.3.1 General. 197.3.2 Test conditions207.3.3 Apparatus 207.3.4 Procedure 207.3.5 Results 21Annex A (informative)

20、Configuration schemes of evacuated tubes .22Annex B (normative) Test report 24Annex C (normative) Determination of the external surface area of absorber tube for double-glass evacuated tubes 31Bibliography .33DIN EN ISO 22975-1:2017-03 EN ISO 22975-1:2016 (E)36.4 Resistance to internal pressure . 16

21、6.4.1 General. 16European foreword This document (EN ISO 22975-1:2016) has been prepared by Technical Committee ISO/TC 180 “Solar energy“ in collaboration with Technical Committee CEN/TC 312 “Thermal solar systems and components” the secretariat of which is held by ELOT. This European Standard shall

22、 be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by April 2017, and conflicting national standards shall be withdrawn at the latest by April 2017. Attention is drawn to the possibility that some of the elements of this document

23、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 implement this European Standard: Austr

24、ia, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden

25、, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 22975-1:2016 has been approved by CEN as EN ISO 22975-1:2016 without any modification. DIN EN ISO 22975-1:2017-03 EN ISO 22975-1:2016 (E)4 ForewordISO (the International Organization for Standardization) is a worldwide

26、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 which a technical committee has been established has the right to be represented on that c

27、ommittee. 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 matters of electrotechnical standardization.The procedures used to develop this document

28、 and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives,

29、Part 2 (see www.iso.org/directives).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 responsible for identifying any or all such patent rights. Details of any patent rights identified during the development of

30、 the document will be in the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents).Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement.For an explanation on the meaning of ISO specific t

31、erms and expressions related to conformity assessment, as well as information about ISOs adherence to the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following URL: www.iso.org/iso/foreword.html.The committee responsible for this document is ISO/TC 180,

32、 Solar energy.ISO 22975 consists of the following parts, under the general title Solar energy Collector components and materials: Part 1: Evacuated tubes Durability and performance Part 2: Heat-pipes for solar thermal application Durability and performance Part 3: Absorber surface durabilityThe foll

33、owing parts are under preparation: Part 5: Insulation material durability and performanceDIN EN ISO 22975-1:2017-03 EN ISO 22975-1:2016 (E)5 IntroductionThis part of ISO 22975 is applicable to all categories of evacuated tubes, including double-glass evacuated tubes and glass-metal sealed evacuated

34、tubes.This part of ISO 22975 provides test methods for inspecting stones and knots in envelope glass tubes.This part of ISO 22975 also provides test methods for determining durability of evacuated tubes, including vacuum performance, thermal shock resistance, external impact resistance and internal

35、pressure resistance. For each durability test, this part of ISO 22975 specifies general, apparatus, procedure and results of the test.This part of ISO 22975 also provides test methods for measuring performance of evacuated tubes, including exposure parameter, solar irradiation for temperature increa

36、se of double-glass evacuated tube and average heat loss coefficient. For each performance test, principle, test conditions, apparatus, procedure and results of the test are specified.DIN EN ISO 22975-1:2017-03 EN ISO 22975-1:2016 (E)6 1 ScopeThis part of ISO 22975 specifies definitions and test meth

37、ods for materials, durability and performance of evacuated tubes.This part of ISO 22975 is applicable to all types of evacuated tubes.2 Normative referencesThe following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated r

38、eferences, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 9488, Solar energy VocabularyISO 9845-1, Solar energy Reference solar spectral irradiance at the ground at different receiving conditions Part 1: Di

39、rect normal and hemispherical solar irradiance for air mass 1,53 Terms and definitionsFor the purposes of this document, the terms and definitions given in ISO 9488 and the following apply.3.1double-glass evacuated tubecomponent of an evacuated tube solar collector, of which both the inner tube and

40、the envelope tube are made of glass3.2glass-metal sealed evacuated tubecomponent of an evacuated tube solar collector, in which the absorber is affixed to a metal fluid channel, that is sealed into the envelope glass tube through a specific glass-metal sealing process3.3stoneopaque inclusions in the

41、 glass of the evacuated tube3.4knottransparent inclusions in the glass of the evacuated tube3.5scratchabraded area where the surface of the glass is torn or worn off3.6vacuum jacketspace between envelope glass tube and absorber in an evacuated tube, wherein air pressure is sufficiently low that ther

42、mal conduction and convection of air can be ignoredDIN EN ISO 22975-1:2017-03 EN ISO 22975-1:2016 (E)7 3.7stagnationstate where no working fluid passes through the evacuated tube and the temperature of the evacuated tube is determined by the solar irradiance3.8exposure temperaturemaximum temperature

43、 at an accessible part of an evacuated tube with specified irradiance under stagnation (3.7) conditionsNote 1 to entry: For double glass evacuated tubes, the temperature with only air in the tube is measured. For direct flow tubes, the measurement is done in the air-filled flow channel within the va

44、cuum tube. For glass-metal sealed tubes with heat pipe, the well-insulated condenser surface temperature is measured.3.9exposure parameterratio of the difference between exposure temperature (3.8) and ambient temperature to the solar irradiance3.10sum of solar irradiation for temperature increasesum

45、 of solar irradiation for a certain preset temperature rise range of the water in a double-glass evacuated tube (3.1)Note 1 to entry: This term applies only to double-glass evacuated tubes.3.11average heat loss coefficientratio of heat loss per m defined external surface area of absorber tube, witho

46、ut irradiance, to temperature difference between water content of vacuum tube and ambient airNote 1 to entry: This term applies only to double-glass evacuated tubes (3.1).4 Classification and test listAccording to material category of absorber, evacuated tubes can be substantially classified into tw

47、o types:a) double-glass evacuated tube, see Figure A.1;b) glass-metal sealed evacuated tube, see Figure A.2.Tests for the two categories of evacuated tubes are summarized in Table 1.Table 1 Test listCategory of evacuated tube TestDouble-glass, Glass-metal sealed 5.1 Inspection for stones and knotsDo

48、uble-glass, Glass-metal sealed 5.2 Inspection for scratchesDouble-glass, Glass-metal sealed 5.3 Testing of solar transmittanceDouble-glass 5.4 Testing of solar absorptanceDouble-glass 5.5 Testing of hemispherical emittanceDouble-glass 6.1 Vacuum performanceDouble-glass 6.2 Resistance to thermal shockDouble-glass, Glass-metal sealed 6.3 Resistance to ImpactDouble-glass, Glass-metal sealed direct flow 6.4 Resistance to internal pressure