EN 12977-2-2018 Thermal solar systems and components - Custom built systems - Part 2 Test methods for solar water heaters and combisystems.pdf

1、BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06Thermal solar systems and components - Custom built systemsPart 2: Test methods for solar water heaters and combisystemsBS EN 129772:2018National forewordThis British Standard is the UK implementation of EN 129772:2018.

2、 It supersedes BS EN 129772:2012, which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee RHE/25, Solar Heating.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all t

3、he necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2018 Published by BSI Standards Limited 2018ISBN 978 0 580 94195 5ICS 27.160; 91.140.10; 91.140.65Compliance with a British Standard cannot confer immunity from legal obligatio

4、ns.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 April 2018.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN 129772:2018EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 12977-2April 2018ICS 27.160; 9

5、1.140.10; 91.140.65 Supersedes EN 129772:2012EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGCEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2018 CEN Ref. No. EN 129772:2018: EAll rights of exploitation in any form and by any means r

6、eserved worldwide for CEN national MembersThermal solar systems and components Custom built systems Part 2: Test methods for solar water heaters and combisystemsInstallations solaires thermiques et leurs composants Installations assembles faon Partie 2 : Mthodes dessai pour chauffeeau solaires et in

7、stallations solaires combinesThermische Solaranlagen und ihre Bauteile - Kundenspezifisch gefertigte Anlagen - Teil 2: Prfverfahren fr Solaranlagen zur Trinkwassererwrmung und solare KombianlagenThis European Standard was approved by CEN on 29 October 2017.CEN members are bound to comply with the CE

8、N/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Uptodate lists and bibliographical references concerning such national standards may be obtained on application to the CENCENELEC Management Centr

9、e 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 CEN-CENELEC Management Centre has the same status as the o

10、fficial 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, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherland

11、s, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.English VersionEN 12977-2:2018 (E)European foreword 4Introduction . 51 Scope . 82 Normative references 83 Terms and definitions . 94 Symbols and abbreviations . 95 System classific

12、ation .116 Test methods 116.1 Introduction . 116.2 General 116.2.1 Suitability for drinking water 116.2.2 Water contamination 116.2.3 Freeze resistance 116.2.4 Hightemperature protection. 116.2.5 Reverse circulation prevention 126.2.6 Pressure resistance .126.2.7 Electrical safety 126.3 Materials 12

13、6.4 Components and pipework . 126.4.1 Collector and collector array 126.4.2 Supporting frame .126.4.3 Collector and other loops 126.4.4 Circulation pump 126.4.5 Expansion vessels 126.4.6 Heat exchangers 136.4.7 Store . 136.4.8 Pipework 136.4.9 Thermal insulation 146.4.10 Control equipment 146.5 Safe

14、ty equipment and indicators . 146.5.1 Safety valves 146.5.2 Safety lines and expansion lines 146.5.3 Blowoff lines .146.5.4 Store isolation valve .146.5.5 Indicators 146.6 Installation . 156.6.1 Roof tightness 156.6.2 Lightning 156.6.3 Snow and wind loads 156.7 Initial operation, inspection and comm

15、issioning .156.8 Documentation 156.9 System performance (for small systems only) .156.10 Water wastage (for small systems only) 167 Optional performance test of small custom built solar heating systems .167.1 General 167.2 Test of the solar collector 177.3 Test of the water store(s) 177.4 Test of th

16、e control equipment . 177.5 Determination of the hot water comfort . 177.6 System simulation model 177.7 Longterm performance prediction . 187.7.1 General. 182Contents PageBS EN 129772:2018EN 12977-2:2018 (E)7.7.2 Calculation procedure 187.7.3 Prediction of yearly system performance indicators 187.7

17、.4 Calculation of the net auxiliary energy demand and fractional energy savings for solarplussupplementary systems 197.7.5 Calculation of the solar fraction for solaronly and preheat systems .217.7.6 Calculation of the parasitic energy (for all system types) .227.8 Presentation of performance indica

18、tors 228 Performance test report 23Annex A (normative) Reference conditions for performance prediction .24Annex B (normative) Additional information regarding the calculationof the fractional energy savings 32Annex C (informative) Short-term system testing .34Annex D (informative) Long-term monitori

19、ng 45Annex E (informative) Determination of water wastage 47Annex F (informative) Implementation for Ecodesign and Energy Labelling 48Annex ZA (informative) Relationship between this European Standard and the energy labelling requirements of Commission Delegated Regulation (EC) No 811/2013 aimed to

20、be covered .49Bibliography .50 ISO ISO pubdate year All rights reserved 3BS EN 129772:2018EN 12977-2:2018 (E)European forewordThis document (EN 12977-2:2018) has been prepared by Technical Committee CEN/TC 312 “Thermal solar systems and components”, the secretariat of which is held by ELOT.This Euro

21、pean Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by October 2018, and conflicting national standards shall be withdrawn at the latest by October 2018.Attention is drawn to the possibility that some of the elem

22、ents of this document may be the subject of patent rights. CEN shall not be held responsible for identifying any or all such patent rights.This document supersedes EN 129772:2012.This document has been prepared under the Mandate M/534 “Standardisation request to the European standardisation organisa

23、tions pursuant to Article 10(1) of Regulation (EU) No 1025/2012 of the European Parliament and of the Council in support of implementation of Commission Regulation (EU) No 814/2013 of 2 August 2013 implementing Directive 2009/125/EC of the European Parliament and of the Council with regard to ecodes

24、ign requirements for water heaters and hot water storage tanks and Commission Delegated Regulation (EU) No 812/2013 of 18 February 2013 supplementing Directive 2010/30/EU of the European Parliament and of the Council with regard to the energy labelling of water heaters, hot water storage tanks and p

25、ackages of water heater and solar device” which was given to CEN by the European Commission and the European Free Trade Association.For relationship with EU Directive(s), see informative Annex ZA, ZB and ZC, which are integral parts of this document.EN 12977 is currently composed with the following

26、parts: Thermal solar systems and components Custom built systems Part 1: General requirements for solar water heaters and combisystems; Thermal solar systems and components Custom built systems Part 2: Test methods for solar water heaters and combisystems; Thermal solar systems and components Custom

27、 built systems Part 3: Performance test methods for solar water heater stores; Thermal solar systems and components Custom built systems Part 4: Performance test methods for solar combistores; Thermal solar systems and components Custom built systems Part 5: Performance test methods for control equi

28、pment.According to the CENCENELEC Internal Regulations, the national standards organisations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France

29、, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.4BS EN 129772:2018EN 12977-2:2018 (E)Introductiona) Drinking water qualityI

30、n respect of potential adverse effects on the quality of drinking water intended for human consumption caused by the product covered by this document, it should be noted that1) this document provides no information as to whether the product may be used without restriction in any of the Member States

31、 of the EU or EFTA,2) while awaiting the adoption of verifiable European criteria, existing national regulations concerning the use and/or the characteristics of this product remain in force.b) Factory made and custom built solar heating systemsEN 129761:2017, EN 129762:2017, EN 129771:2018, EN 1297

32、72:2018, EN 129773:2018, EN 129774:2018 and EN 129775:2018 distinguish two categories of solar heating systems:1) factory made solar heating systems; and2) custom built solar heating systems.The classification of a system as factory made or custom built is a choice of the final supplier, in accordan

33、ce to the following definitions.3) Factory made solar heating systems are batch products with one trade name, sold as complete and ready to install kits, with fixed configurations. Systems of this category are considered as a single product and assessed as a whole.If a factory made solar heating sys

34、tem is modified by changing its configuration or by changing one or more of its components, the modified system is considered as a new system. Requirements and test methods for factory made solar heating systems are given in EN 129761:2017 and EN 129762:2017.4) Custom built solar heating systems are

35、 either uniquely built or assembled by choosing from an assortment of components. Systems of this category are regarded as a set of components. The components are separately tested and test results are integrated to an assessment of the whole system. Requirements for custom built solar heating syste

36、ms are given in EN 12977-1:2018, test methods are specified in EN 12977-2:2018, EN 12977-3:2018, EN 129774:2018 and EN 129775:2018. Custom built solar heating systems are subdivided into two categories:i) large custom built systems are uniquely designed for a specific situation. In general, they are

37、 designed by HVAC engineers, manufacturers or other experts;ii) small custom built systems offered by a company are described in a so-called assortment file, in which all components and possible system configurations, marketed by the company, are specified. Each possible combination of a system conf

38、iguration with components from the assortment is considered as one custom built system.Table 1 shows the division for different system types.5BS EN 129772:2018EN 12977-2:2018 (E)Table 1 Division for factory made and custom built solar heating systemsFactory made solar heating systems ( EN 12976-1:20

39、17 and EN 12976-2:2017 )Custom built solar heating systems ( EN 12977-1:2018 , EN 12977-2:2018 , EN 12977-3:2018 , EN 12977-4:2018 and EN 12977-5:2018 )Integral collectorstorage systems for domestic hot water preparationForced circulation systems for hot water preparation and/or space heating/coolin

40、g, assembled using components and configurations described in a documentation file (mostly small systems)Thermosiphon systems for domestic hot water preparationForced circulation systems as batch product with fixed configuration for domestic hot water preparationUniquely designed and assembled syste

41、ms for hot water preparation and/or space heating/cooling (mostly large systems)NOTE 1 Forced circulation systems can be classified either as factory made or as custom built, depending on the market approach chosen by the final supplier.NOTE 2 Both factory made and custom built systems are performan

42、ce tested under the same set of basic reference conditions as specified in EN 12976-2:2017, Annex B and in EN 12977-2:2018, Annex A. In practice, the installation conditions may differ from these reference conditions.c) Test methods and procedures for the analysis of large custom built solar heating

43、 systemsQuality assurance is of primary importance for large custom built systems. The total investment cost for such systems is higher than for smaller ones, although the specific investment cost (i.e. per m2collector area) is lower. In several European countries, the potential of large custom buil

44、t systems from the point of view of conventional energy savings is much larger than for smaller ones. Moreover, the return on investment is in many cases more favourable for large systems than for small ones. Hence, both the purchasers of large custom built systems and the governments are interested

45、 in efficient, reliable and durable systems, the thermal performance of which may be accurately predicted, checked and supervised.The test methods in this document provide a means of verifying the compliance of large custom built systems with the requirements in EN 129771:2018.NOTE 3 Within the fram

46、ework of the EU ALTENER Programme the project “Guaranteed Solar Results” (GSR) was addressing similar objectives in respect of quality assurance (see 7, 8). Similar procedures and monitoring equipment were used as described in Annexes C and D. It might be necessary to update Annexes C and D at a lat

47、er stage during a revision of this document when more expertise is available.As large custom built systems are by definition unique systems, only general procedures on how to check and supervise them may be given. An additional difficulty in the formulation of procedures is the fact that they have t

48、o be adapted to the dimension of the large custom built system considered, which may vary from typically 30 m2to 30 000 m2of collector area. Therefore, several possible levels of analysis are included (Annexes C and D).The objective of the two shortterm system tests presented in Annex C is the chara

49、cterization of system performance and/or the estimation of the ability of the system to deliver the energy claimed by the designer. In principle, two approaches for shortterm system testing are referred to in this European Standard:1) a simplified check of short-term system performance, carried out by intercomparison of the measured solar heating system heat gain with the one predicted by simulation, using the actual weather and operating conditions as measured during the shortterm test;2) a sh