BS EN ISO 22975-1-2016 Solar energy Collector components and materials Evacuated tubes Durability and performance《太阳能 集热器部件与材料 真空管 耐久性和性能》.pdf

1、BS EN ISO 22975-1:2016Solar energy Collectorcomponents and materialsPart 1: Evacuated tubes Durability and performance (ISO 22975-1:2016)BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06BS EN ISO 22975-1:2016 BRITISH STANDARDNational forewordThis British Standard is t

2、he UK implementation of EN ISO 22975-1:2016. The UK participation in its preparation was entrusted to TechnicalCommittee RHE/25, Solar Heating.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessa

3、ryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2016.Published by BSI Standards Limited 2016ISBN 978 0 580 80600 1ICS 27.160Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was publis

4、hed under the authority of theStandards Policy and Strategy Committee on 30 November 2016.Amendments/corrigenda issued since publicationDate Text affectedEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 22975-1 October 2016 ICS 27.160 English Version Solar energy - Collector components and m

5、aterials - Part 1: Evacuated tubes - Durability and performance (ISO 22975-1:2016) nergie solaire - 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 un

6、d Leistungsfhigkeit (ISO 22975-1:2016) This European Standard was approved by CEN on 12 September 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.

7、 Up-to-date lists and bibliographical references concerning such national standards may be obtained 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 tr

8、anslation under the responsibility of a CEN member into its own language and notified to the 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, Fin

9、land, 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, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZAT

10、ION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: 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 EBS EN ISO 22975-1:2016EN ISO

11、22975-1:2016 (E) 3 European 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 sha

12、ll 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 documen

13、t 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: Aus

14、tria, 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, Swed

15、en, 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. BS EN ISO 22975-1:2016ISO 22975-1:2016(E)Foreword vIntroduction vi1 Scope . 12 Normative references 13 Terms and definitions . 14

16、Classification and test list . 25 Testing of material 35.1 Inspection for stones and knots . 35.1.1 General 35.1.2 Test conditions. 35.1.3 Apparatus . 35.1.4 Procedure . 35.1.5 Results . 45.2 Inspection for scratches 45.2.1 General 45.2.2 Test conditions. 45.2.3 Apparatus . 45.2.4 Procedure . 45.2.5

17、 Results . 55.3 Testing of solar transmittance . 55.3.1 General 55.3.2 Test conditions and apparatus . 55.3.3 Procedure . 55.3.4 Results . 55.4 Testing of solar absorptance . 55.4.1 General 55.4.2 Test conditions and apparatus . 55.4.3 Procedure . 55.4.4 Results . 65.5 Testing of hemispherical emitt

18、ance 65.5.1 General 65.5.2 Test conditions. 65.5.3 Apparatus and procedure 65.5.4 Results . 76 Durability testing of evacuated tube 76.1 Vacuum performance 76.1.1 General 76.1.2 Test conditions and apparatus . 76.1.3 Procedure . 86.1.4 Results . 86.2 Resistance to thermal shock 86.2.1 General 86.2.2

19、 Test conditions and apparatus . 96.2.3 Procedure . 96.2.4 Results . 96.3 Resistance to impact 96.3.1 General 96.3.2 Principle 96.3.3 Procedure . 96.3.4 Results . 96.4 Resistance to internal pressure . 106.4.1 General. 10 ISO 2016 All rights reserved iiiContents PageBS EN ISO 22975-1:2016ISO 22975-1

20、:2016(E)6.4.2 Test conditions and apparatus 106.4.3 Procedure 106.4.4 Results 107 Performance testing of evacuated tube .107.1 Tests for determination the exposure parameter 107.1.1 General. 107.1.2 Test conditions117.1.3 Apparatus 117.1.4 Procedure 127.1.5 Results 137.2 Tests for determination of s

21、um of solar irradiation for temperature increase of double-glass evacuated tube 137.2.1 General. 137.2.2 Test conditions137.2.3 Apparatus 137.2.4 Procedure and results 137.3 Tests to determine the average heat loss coefficient of a double-glass evacuated tube .137.3.1 General. 137.3.2 Test condition

22、s147.3.3 Apparatus 147.3.4 Procedure 147.3.5 Results 15Annex A (informative) Configuration schemes of evacuated tubes .16Annex B (normative) Test report 18Annex C (normative) Determination of the external surface area of absorber tube for double-glass evacuated tubes 25Bibliography .27iv ISO 2016 Al

23、l rights reservedBS EN ISO 22975-1:2016ISO 22975-1:2016(E)ForewordISO (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 committee

24、s. 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 with the Inter

25、national Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.The procedures used to develop this document 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 diff

26、erent types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, 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 shal

27、l not be held responsible for identifying any or all such patent rights. Details of any patent rights identified during the development of 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

28、 information given for the convenience of users and does not constitute an endorsement.For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the World Trade Organization (WTO) principles in the Technic

29、al Barriers to Trade (TBT) see the following URL: www.iso.org/iso/foreword.html.The committee responsible for this document is ISO/TC 180, Solar energy.ISO 22975 consists of the following parts, under the general title Solar energy Collector components and materials: Part 1: Evacuated tubes Durabili

30、ty and performance Part 2: Heat-pipes for solar thermal application Durability and performance Part 3: Absorber surface durabilityThe following parts are under preparation: Part 5: Insulation material durability and performance ISO 2016 All rights reserved vBS EN ISO 22975-1:2016ISO 22975-1:2016(E)I

31、ntroductionThis part of ISO 22975 is applicable to all categories of evacuated tubes, including double-glass evacuated tubes and glass-metal sealed evacuated tubes.This part of ISO 22975 provides test methods for inspecting stones and knots in envelope glass tubes.This part of ISO 22975 also provide

32、s test methods for determining durability of evacuated tubes, including vacuum performance, thermal shock resistance, external impact resistance and internal pressure resistance. For each durability test, this part of ISO 22975 specifies general, apparatus, procedure and results of the test.This par

33、t of ISO 22975 also provides test methods for measuring performance of evacuated tubes, including exposure parameter, solar irradiation for temperature increase of double-glass evacuated tube and average heat loss coefficient. For each performance test, principle, test conditions, apparatus, procedu

34、re and results of the test are specified.vi ISO 2016 All rights reservedBS EN ISO 22975-1:2016Solar energy Collector components and materials Part 1: Evacuated tubes Durability and performance1 ScopeThis part of ISO 22975 specifies definitions and test methods for materials, durability and performan

35、ce 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 references, only the edition cited applies.

36、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: Direct normal and hemispherical solar irradia

37、nce 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 the envelope tube are made of glass3.2glass

38、-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 glass of the evacuated tube3.4knottranspar

39、ent 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 thermal conduction and convection of air can be

40、 ignoredINTERNATIONAL STANDARD ISO 22975-1:2016(E) ISO 2016 All rights reserved 1BS EN ISO 22975-1:2016ISO 22975-1:2016(E)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 temperature

41、maximum temperature 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 ch

42、annel within the vacuum 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 temp

43、erature increasesum 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 a

44、bsorber tube, without 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

45、 classified into two 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

46、 stones and knotsDouble-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 Resista

47、nce to thermal shockDouble-glass, Glass-metal sealed 6.3 Resistance to ImpactDouble-glass, Glass-metal sealed direct flow 6.4 Resistance to internal pressure2 ISO 2016 All rights reservedBS EN ISO 22975-1:2016ISO 22975-1:2016(E)Category of evacuated tube TestDouble-glass, Glass-metal sealed 5.1 Insp

48、ection for stones and knotsDouble-glass, Glass-metal sealed7.1 Tests for determination of exposure parameterDouble-glass7.2 Tests for determination of sum of solar irradiation for temperature increase of double-glass evacuated tubeDouble-glass7.3 Tests for determination the average heat loss coeffic

49、ient of double-glass evacuated tube5 Testing of material5.1 Inspection for stones and knots5.1.1 GeneralThis test is intended to check the uniformity of the tube glass by visual inspection.5.1.2 Test conditionsThe test room/table for taking observations shall have a minimum illuminance of 1 500 lx.5.1.3 ApparatusThe dimension measurement instrument shall have an accuracy of 0,1 mm.5.1.4 Procedurea) Draw two lines with permanent marker or other non-invasive marking method with thickness no more than 0,5 mm on the surface of t