EN 12977-3:2008

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.HPThermische Solaranlagen und ihre Bauteile - Kundenspezifisch gefertigte Anlagen - Teil 3: Leistungsprüfung von Warmwasserspeichern für SolaranlagenInstallations solaires thermiques et leurs composants - Installations assemblées à façon - Partie 3: Méthodes d'essai des performances des dispositifs de stockage des installations de chauffage solaire de l'eauThermal solar systems and components - Custom built systems - Part 3: Performance test methods for solar water heater stores91.140.65Oprema za ogrevanje vodeWater heating equipment91.140.10Sistemi centralnega ogrevanjaCentral heating systems27.160Solar energy engineeringICS:Ta slovenski standard je istoveten z:EN 12977-3:2008SIST EN 12977-3:2008en,fr,de01-november-2008SIST EN 12977-3:2008SLOVENSKI
STANDARDSIST ENV 12977-3:20021DGRPHãþD

EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 12977-3August 2008ICS 91.140.10; 91.140.65; 27.160Supersedes ENV 12977-3:2001
English VersionThermal solar systems and components - Custom built systems- Part 3: Performance test methods for solar water heater storesInstallations solaires thermiques et leurs composants -Installations assemblées à façon - Partie 3: Méthodesd'essai des performances des dispositifs de stockage desinstallations de chauffage solaire de l'eauThermische Solaranlagen und ihre Bauteile -Kundenspezifisch gefertigte Anlagen - Teil 3:Leistungsprüfung von Warmwasserspeichern fürSolaranlagenThis European Standard was approved by CEN on 15 May 2008.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the CEN 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 translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, 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, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2008 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 12977-3:2008: ESIST EN 12977-3:2008

Store model benchmark tests.33 A.1 General.33 A.2 Temperature of the store during stand-by.33 A.3 Heat transfer from heat exchanger to store.33 Annex B (normative)
Verification of store test results.35 B.1 General.35 B.2 Test sequences for verification of store test results.35 B.2.1 Verification sequences from measurements on a store testing stand.35 B.2.2 Test sequences obtained during a whole system test according to ISO 9459-5.42 B.3 Verification procedure.42 B.3.1 General.42 B.3.2 Error in transferred energies.42 B.3.3 Error in transferred power.43 Annex C (normative)
Benchmarks for the parameter identification.44 Annex D (informative)
Requirements for the numerical store model.45 D.1 General.45 D.2 Assumptions.45 D.3 Calculation of energy balance.45 SIST EN 12977-3:2008

Determination of store parameters by means of “up-scaling” and
“down-scaling”.47 E.1 General.47 E.2 Requirements.47 E.3 Determination of store parameters.48 E.3.1 Thermal capacity of store.48 E.3.2 Height of store.48 E.3.3 Determination of heat loss capacity rate.48 E.3.4 Relative heights of the connections and the temperature sensors.48 E.3.5 Heat exchangers.48 E.3.6 Parameter describing the degradation of thermal stratification during stand-by.49 E.3.7 Parameter describing the quality of thermal stratification during direct discharge.49 Annex F (informative)
Determination of hot water comfort.50 Bibliography.51
 prCEN/TS 12977-2: Test methods
 EN 12977-3: Performance test methods for solar water heater stores
 prCEN/TS 12977-4:
Performance test methods for solar combistores
 prCEN/TS 12977-5:
Performance test methods for control equipment
NOTE The “prCEN/TS” standards are expected to become CEN/TS standards in the future. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, 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, Switzerland and the United Kingdom. SIST EN 12977-3:2008

Introduction The test methods for stores of solar heating systems as described in this European Standard are required for the determination of the thermal performance of small custom built systems as specified in prCEN/TS 12977-1. The test method described in this European Standard delivers a complete set of parameters, which are needed for the simulation of the thermal behaviour of a store being part of a small custom built thermal solar system. For the determination of store parameters such as the thermal capacity and the heat loss rate the method standardised in EN 12897 can be used as an alternative. NOTE 1 The already existing test methods for stores of conventional heating systems are not sufficient with regard to thermal solar systems. This is due to the fact that the performance of thermal solar 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 performance characterisation of stores for solar heating systems is needed. NOTE 2 For additional information about the test methods for the performance characterisation of stores, see [1] in Bibliography.
1 Scope This European Standard specifies test methods for the performance characterization of stores which are intended for use in small custom built systems as specified in prCEN/TS 12977-1.
Stores tested according to this document are commonly used in solar hot water systems. However, also the thermal performance of all other thermal stores with water as storage medium can 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 prCEN/TS 12977-4.
2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited ap
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