EN 12977-3-2018 Thermal solar systems and components - Custom built systems - Part 3 Performance test methods for solar water heater stores.pdf

1、BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06Thermal solar systems and components Custom built systemsPart 3: Performance test methods for solar water heater storesBS EN 12977-3:2018National forewordThis British Standard is the UK implementation of EN 12977-3:2018

2、. It supersedes BS EN 12977-3:2012, which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee RHE/25, Solar Heating.A list of organizations represented on this committee can be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

3、 the 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 94199 3ICS 91.140.65; 27.160; 91.140.10Compliance with a British Standard cannot confer immunity from legal obligat

4、ions.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 12977-3:2018EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 12977-3April 2018ICS 27.160

5、; 91.140.10; 91.140.65 Supersedes EN 12977-3:2012EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGCEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2018 CEN Ref. No. EN 12977-3:2018: EAll rights of exploitation in any form and by any me

6、ans reserved worldwide for CEN national MembersThermal solar systems and components - Custom built systems - Part 3: Performance test methods for solar water heater storesInstallations solaires thermiques et leurs composants - Installations assembles faon - Partie 3 : Mthodes dessai des performances

7、 des dispositifs de stockage des installations de chauffage solaire de leauThermische Solaranlagen und ihre Bauteile - Kundenspezifisch gefertigte Anlagen - Teil 3: Leistungsprfung von Warmwasserspeichern fr SolaranlagenThis European Standard was approved by CEN on 29 October 2017.CEN members are bo

8、und 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 obtained on application to the

9、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 CEN-CENELEC Management Centre

10、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, Ireland, Italy, Latvia, Lithuania, L

11、uxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.English VersionEN 12977-3:2018 (E)European foreword 4Introduction . 51 Scope . 62 Normative references 63 Terms and definitions . 64 Symbols and abbrevi

12、ations 105 Store classification 116 Laboratory store testing 116.1 Requirements on the testing stand 116.1.1 General. 116.1.2 Measured quantities and measuring procedure .146.2 Installation of the store. 156.2.1 Mounting 156.2.2 Connection . 156.3 Test and evaluation procedures 166.3.1 General. 166.

13、3.2 Test sequences 176.3.3 Data processing of the test sequences .267 Store test combined with a system test according to ISO 9459-5 .288 Store test according to EN 12897289 Determination of store parameters by means of “up- and down-scaling” 289.1 General 289.2 Requirements 299.3 Determination of s

14、tore parameters . 299.3.1 Thermal capacity of store 299.3.2 Height of store .299.3.3 Determination of heat capacity rate 299.3.4 Relative heights of the connections and the temperature sensors 299.3.5 Heat exchangers 309.3.6 Parameter describing the degradation of thermal stratification during stand

15、-by 309.3.7 Parameter describing the quality of thermal stratification during direct discharge 3010 Test report 3010.1 General 3010.2 Description of the store 3010.3 Test results. 3110.4 Parameters for the simulation 32Annex A (normative) Store model benchmark tests .33Annex B (normative) Verificati

16、on of store test results .35Annex C (normative) Benchmarks for the parameter identification 43Annex D (informative) Requirements for the numerical store model .44Annex E (informative) Determination of hot water comfort 46Annex F (informative) Implementation for Ecodesign and Energy Labelling 47Annex

17、 ZA (informative) Relationship between this European Standard and the energy labelling requirements of Commission Delegated Regulation (EC) No 811/2013 aimed to be covered .482Contents PageBS EN 12977-3:2018EN 12977-3:2018 (E)Annex ZB (informative) Relationship between this European Standard and the

18、 energy labelling requirements of Commission Delegated Regulation (EC) No 812/2013 aimed to be covered .49Annex ZC (informative) Relationship between this European Standard and the ecodesign requirements of Commission Regulation (EC) No 814/2013 aimed to be covered .50Bibliography .51 ISO ISO pub-da

19、te year All rights reserved 3BS EN 12977-3:2018EN 12977-3:2018 (E)European forewordThis document (EN 12977-3:2018) has been prepared by Technical Committee CEN/TC 312 “Thermal solar systems and components”, the secretariat of which is held by ELOT.This European Standard shall be given the status of

20、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 elements of this document may be the subject of

21、 patent rights. CEN shall not be held responsible for identifying any or all such patent rights.This document supersedes EN 12977-3:2012.This document has been prepared under the Mandate M/534 “Standardisation request to the European standardisation organisations pursuant to Article 10(1) of Regulat

22、ion (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 ecodesign requirements for water heaters and hot

23、 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 packages of water heater and solar device”

24、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 parts: Thermal solar systems and component

25、s 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 built systems Part 3: Performance test me

26、thods 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 equipment.According to the CEN-CENELEC Interna

27、l 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, Germany, Greece, Hungary, Iceland, Irel

28、and, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.4BS EN 12977-3:2018EN 12977-3:2018 (E)IntroductionThe test methods for stores of solar heating systems as described

29、in this European Standard are required for the determination of the thermal performance of small custom built systems as specified in EN 12977-1:2018.The test method described in this European Standard delivers a complete set of parameters, which are needed for the simulation of the thermal behaviou

30、r of a store being part of a small custom built solar heating system.For the determination of store parameters such as the thermal capacity and the heat loss rate, the method standardized in EN 12897 can be used as an alternative.NOTE 1 The already existing test methods for stores of conventional he

31、ating systems are not sufficient with regard to solar heating systems. This is due to the fact that the performance of solar heating systems depends much more on the thermal behaviour of the store (e.g. stratification, heat losses), than conventional systems do. Hence, this separate document for the

32、 performance characterization of stores for solar heating systems is needed.NOTE 2 For additional information about the test methods for the performance characterization of stores, see 1 in Bibliography.5BS EN 12977-3:2018EN 12977-3:2018 (E)1 ScopeThis European Standard specifies test methods for th

33、e performance characterization of stores which are intended for use in small custom built systems as specified in EN 12977-1:2018.Stores tested according to this document are commonly used in solar heating systems. However, the thermal performance of all other thermal stores with water as a storage

34、medium can also be assessed according to the test methods specified in this document.The document applies to stores with a nominal volume between 50 l and 3 000 l.This document does not apply to combistores. Performance test methods for solar combistores are specified in EN 12977-4:2018.2 Normative

35、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. For undated references, the latest edition of the referenced document (including any amendments) applie

36、s.EN 12828, Heating systems in buildings Design for water-based heating systemsEN 12897, Water supply Specification for indirectly heated unvented (closed) storage water heatersEN ISO 9488:1999, Solar energy Vocabulary (ISO 9488:1999)ISO 9459-5, Solar heating Domestic water heating systems Part 5: S

37、ystem performance characterization by means of whole-system tests and computer simulation3 Terms and definitionsFor the purposes of this document, the terms and definitions given in EN ISO 9488:1999 and the following apply.3.1ambient temperaturemean value of the temperature of the air surrounding th

38、e store3.2chargeprocess of transferring energy into the store by means of a heat source3.3charge connectionpipe connection used for charging the storage device3.4combistoreone store used for both domestic hot water preparation and space heating3.5conditioningprocess of creating a uniform temperature

39、 inside the store by discharging the store with = 20 C until a steady state is reachedNote 1 to entry: The conditioning at the beginning of a test sequence is intended to provide a well-defined initial system state, i.e. a uniform temperature in the entire store.6 BS EN 12977-3:2018EN 12977-3:2018 (

40、E)3.6constant charge powercharge power which is achieved when the mean value over the period of 0,5 reduced charge volumes (see 3.33) is within 0,1Note 1 to entry: The symbol ” above a certain value indicates that the corresponding value is a mean value.3.7constant inlet temperaturetemperature which

41、 is achieved during charge (x = C) or discharge (x = D), if the mean value over the period of 0,5 “reduced charge/discharge volume” (see 3.33) is within ( 1) CNote 1 to entry: The symbol ” above a certain value indicates that the corresponding value is a mean value.3.8constant flow rateflow rate whi

42、ch is achieved when the mean value of over the period of 0,5 “reduced charge/discharge volumes” (see 3.33) is within 0,1Note 1 to entry: The symbol ” above a certain value indicates that the corresponding value is a mean value.3.9dead volume/dead capacityvolume/capacity of the store which is only he

43、ated due to heat conduction (e.g. below a heat exchanger)3.10direct charge/dischargetransfer or removal of thermal energy in or out of the store, by directly exchanging the fluid in the store3.11dischargeprocess of decreasing thermal energy inside the store caused by the hot water load3.12discharge

44、connectionpipe connection used for discharging the storage device3.13double portcorresponding pair of inlet and outlet connections for direct charge/discharge of the storeNote 1 to entry: Often, the store is charged or discharged via closed or open circuits that are connected to the store through do

45、uble ports.3.14effective volume/effective capacityvolume/capacity which is involved in the heat storing process if the store is operated in a usual way3.15electrical (auxiliary) heatingelectrical heating element immersed into the store7BS EN 12977-3:2018EN 12977-3:2018 (E)3.16external auxiliary heat

46、ingauxiliary heating device located outside the store. The heat is transferred to the store by direct or indirect charging via a charge circuit. The external auxiliary heating is not considered as part of the store under test3.17heat loss capacity rate(UA)s,aoverall heat loss of the entire store dur

47、ing stand-by per K of the temperature difference between the medium store temperature and the ambient air temperature3.18heat transfer capacity ratethermal power transferred per K of the temperature difference3.19immersed heat exchangerheat exchanger which is completely surrounded with the fluid in

48、the store3.20indirect charge/dischargetransfer or removal of thermal energy into or out of the store, via a heat exchanger3.21loadheat output of the store during discharge. The load is defined as the product of the mass, specific thermal capacity and temperature increase of the water as it passes th

49、e solar heating system3.22mantle heat exchangerheat exchanger mounted to the store in such a way that it forms a layer between the fluid in the store and ambient3.23measured energyQx,mtime integral of the measured power over one or more test sequences, excluding time periods used for conditioning at the beginning of the test sequences3.24measured powerPx,mpower calculated from measured volume flow rate as well as measured inlet and outlet temperatures3.25measured store heat capacitymeasured difference in energy of t