1、BRITISH STANDARDBS EN 12976-2:2006Thermal solar systems and components Factory made systems Part 2: Test methodsThe European Standard EN 12976-2:2006 has the status of a British StandardICS 27.160g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g
2、38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58Licensed Copy: Wang Bin, na, Tue May 09 02:23:32 BST 2006, Uncontrolled Copy, (c) BSIBS EN 12976-2:2006This British Standard was published under the authority of the Standards Policy and Strategy Committe
3、e on 20 February 2006 BSI 20 February 2006ISBN 0 580 47842 4National forewordThis British Standard is the official English language version of EN 12976-2:2006. It supersedes BS EN 12976-2:2001 which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee RHE/25, Sol
4、ar heating, which has the responsibility to: aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep UK interests informed; monitor related international and European developments and pro
5、mulgate them in the UK.A list of organizations represented on this committee can be obtained on request to its secretary.Cross-referencesThe British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entit
6、led “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.Compliance w
7、ith a British Standard does not of itself confer immunity from legal obligations.Summary of pagesThis document comprises a front cover, an inside front cover, the EN title page, pages 2 to 55 and a back cover.The BSI copyright notice displayed in this document indicates when the document was last is
8、sued.Amendments issued since publicationAmd. No. Date CommentsLicensed Copy: Wang Bin, na, Tue May 09 02:23:32 BST 2006, Uncontrolled Copy, (c) BSIEUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 12976-2January 2006ICS 27.160 Supersedes EN 12976-2:2000 English VersionThermal solar systems and compo
9、nents - Factory madesystems - Part 2: Test methodsInstallations solaires thermiques et leurs composants -Installations prfabriques en usine - Partie 2: MthodesdessaiThermische Solaranlagen und ihre Bauteile - VorgefertigteAnlagen - Teil 2: PrfverfahrenThis European Standard was approved by CEN on 9
10、December 2005.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 o
11、btained on application to the Central Secretariat 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 Central Sec
12、retariat has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Port
13、ugal, Romania,Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2006 CEN All rights of exploitation in any form and by any means re
14、servedworldwide for CEN national Members.Ref. No. EN 12976-2:2006: ELicensed Copy: Wang Bin, na, Tue May 09 02:23:32 BST 2006, Uncontrolled Copy, (c) BSIEN 12976-2:2006 (E) 2 Contents Page Foreword 4 Introduction5 1 Scope .7 2 Normative references .7 3 Terms and definitions.7 4 Symbols and abbreviat
15、ions8 5 Testing .8 5.1 Freeze resistance8 5.1.1 General 8 5.1.2 Systems using antifreeze fluid.8 5.1.3 Drain-back systems 9 5.1.4 Drain-down systems.9 5.1.5 Freeze protection and control functions combined .9 5.1.6 Other systems .9 5.2 Over temperature protection10 5.2.1 Purpose .10 5.2.2 Apparatus
16、10 5.2.3 Procedure 10 5.2.4 Reporting requirements .11 5.3 Pressure resistance11 5.3.1 Purpose .11 5.3.2 Apparatus 11 5.3.3 Safety precaution11 5.3.4 Procedure 12 5.3.5 Reporting requirements .12 5.4 Water contamination.13 5.5 Lightning protection .13 5.6 Safety equipment 13 5.6.1 Safety valves .13
17、5.6.2 Safety lines and expansion lines .13 5.6.3 Blow-off lines 13 5.7 Labelling 13 5.8 Thermal performance characterisation .13 5.8.1 Introduction.13 5.8.2 Test procedure 14 5.8.3 Prediction of yearly performance indicators 14 5.9 Ability of solar-plus-supplementary systems to cover the load19 5.9.
18、1 General 19 5.9.2 Boundary conditions for auxiliary heating19 5.9.3 Boundary conditions for daily load .19 5.9.4 Determination of the ability to cover the maximum daily load by means of testing the system .20 5.9.5 Determination of the ability to cover the maximum daily load by means of numerical s
19、imulations20 5.10 Reverse flow protection .20 5.11 Electrical safety.21 Annex A (normative) Thermal performance presentation sheet22 Annex B (normative) Reference conditions for performance prediction 25 Licensed Copy: Wang Bin, na, Tue May 09 02:23:32 BST 2006, Uncontrolled Copy, (c) BSIEN 12976-2:
20、2006 (E) 3 B.1 General 25 B.2 Pipe diameter and insulation thickness 27 B.3 Calculation of cold water temperature at reference location 28 Annex C (informative) Extreme climate test procedure for the assessment of the frost resistance of solar DHW systems with outdoor tank .30 C.1 Indoor test proced
21、ure for assessment of the frost resistance of solar DWH systems with outdoor tank 30 C.1.1 Objective and applicability.30 C.1.2 Apparatus and mounting of the system30 C.1.3 Test procedure33 C.1.4 Test conditions .35 C.1.5 Results.39 C.2 Indoor test procedure for assessment of the reliability of sola
22、r DWH systems in respect of overheating protection39 C.2.1 Objective and applicability.39 C.2.2 Apparatus and mounting of the system39 C.2.3 Test procedure42 C.2.4 Test conditions .43 C.2.5 Results.44 Annex D (informative) Ageing test for thermostatic valves .46 D.1 General 46 D.2 Test arrangement46
23、 D.3 Test Procedure47 D.4 Results.47 Annex E (informative) Lightning protection test for solar heating systems .48 E.1 Field of application .48 E.2 Purpose .48 E.3 Requirements48 E.4 Apparatus 49 E.5 Test procedure49 E.5.1 Test conditions .49 E.5.2 Solar heating system installation 49 E.5.3 Separati
24、on distance St49 E.5.4 Size of the bonding cable or strip49 E.5.5 Bridging between tank and supports 50 E.5.6 Bridging between collectors and supports.50 E.5.7 Bridging between collectors and tank.50 E.5.8 Connecting terminal with Lightning Protection System (LPS)50 E.5.9 Metal sheets covering parts
25、 of the solar heating system 50 E.5.10 Heating effects due to lightning currents .50 E.5.11 Mechanical durability due to lightning mechanical loads .50 E.6 Report 50 E.7 Conclusions 50 Annex F (informative) Lightning Protection testing sheet .51 Bibliography.55 Licensed Copy: Wang Bin, na, Tue May 0
26、9 02:23:32 BST 2006, Uncontrolled Copy, (c) BSIEN 12976-2:2006 (E) 4 Foreword This European Standard (EN 12976-2:2006) 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 statu
27、s of a national standard, either by publication of an identical text or by endorsement, at the latest by July 2006, and conflicting national standards shall be withdrawn at the latest by July 2006. This European Standard supersedes EN 12976-2:2000. According to the CEN/CENELEC Internal Regulations,
28、the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Po
29、land, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. Licensed Copy: Wang Bin, na, Tue May 09 02:23:32 BST 2006, Uncontrolled Copy, (c) BSIEN 12976-2:2006 (E) 5 Introduction Drinking water quality In respect of potential adverse effects on the quality of water i
30、ntended for human consumption, caused by the product covered by this standard: a) This standard provides no information as to whether the product may be used without restriction in any of the Member States of the EU or EFTA; b) It should be noted that, while awaiting the adoption of verifiable Europ
31、ean criteria, existing national regulations concerning the use and/or the characteristics of this product remain in force. Factory Made and Custom Built solar heating systems The standards EN 12976-1 as well as EN 12976-2 and the prestandards ENV 12977-1 to ENV 12977-3 distinguish two categories of
32、solar heating systems: Factory Made solar heating systems and Custom Built solar heating systems. The classification of a system as Factory Made or Custom Built is a choice of the final supplier, in accordance with the following definitions: Factory Made solar heating systems are batch products with
33、 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 System is modified by changing its configuration or by changing one or more of its components,
34、the modified system is considered as a new system for which a new test report is necessary. Requirements and test methods for Factory Made solar heating systems are given in EN 12976-1 and EN 12976-2. Custom Built solar heating systems are either uniquely built, or assembled by choosing from an asso
35、rtment 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 systems are given in ENV 12977-1; test methods are specified in E
36、NV 12977-2 and ENV 12977-3. Custom Built solar heating systems are subdivided into two categories: - Large Custom Built systems are uniquely designed for a specific situation. In general HVAC engineers, manufacturers or other experts design them. - Small Custom Built systems offered by a company are
37、 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 configuration with components from the assortment is considered as one Custom Built system. Licensed Copy: Wang Bin, na
38、, Tue May 09 02:23:32 BST 2006, Uncontrolled Copy, (c) BSIEN 12976-2:2006 (E) 6 Table 1 shows the division for different system types: Table 1 - Division for factory made and custom built solar heating systems Factory Made Solar Heating Systems (EN 12976-1, -2) Custom Built Solar Heating Systems (EN
39、V 12977-1, -2, -3) Integral collector-storage systems for domestic hot water preparation Forced-circulation systems for hot water preparation and/or space heating, assembled using components Thermosiphon systems for domestic hot water preparation and configurations described in a documentation file
40、(mostly small systems) Forced-circulation systems as batch product with fixed configuration for domestic hot water preparation Uniquely designed and assembled systems for hot water preparation and/or space heating (mostly large systems) NOTE 1 Forced circulation systems can be classified either as F
41、actory 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 performance tested under the same set of reference conditions as specified in Annex B of the present standard and Annex A of ENV 12977-2:2001. In pract
42、ice, the installation conditions may differ from these reference conditions. NOTE 3 A Factory Made system for domestic hot water preparation may have an option for space heating, however this option should not be used or considered during testing as a Factory Made system. Licensed Copy: Wang Bin, na
43、, Tue May 09 02:23:32 BST 2006, Uncontrolled Copy, (c) BSIEN 12976-2:2006 (E) 7 1 Scope This European Standard specifies test methods for validating the requirements for Factory Made Thermal Solar Heating Systems as specified in EN 12976-1. The standard also includes two test methods for thermal per
44、formance characterization by means of whole system testing. 2 Normative references The following referenced documents are indispensable for the application of this European Standard. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced do
45、cument (including any amendments) applies. EN 12975-2, Thermal solar systems and components Factory made systems Part 2: Test methods EN 12976-1:2006, Thermal solar systems and components - Factory made systems Part 1: General requirements ENV 12977-2:2001, Thermal solar systems and components Custo
46、m built systems Part 2: Test methods EN 60335-1, Household and similar electrical appliances - Safety - Part 1: General requirements (IEC 60335-1:2001, modified) EN 60335-2-21, Household and similar electrical appliances - Safety - Part 2-21: Particular requirements for storage water heaters (IEC 60
47、335-2-21:2002, modified) EN ISO 9488:1999, Solar energy Vocabulary (ISO 9488:1999) ISO 9459-1:1993, Solar heating - Domestic water heating systems - Part 1: Performance rating procedure using indoor test methods ISO 9459-2:1995, Solar heating Domestic water heating systems Part 2: Outdoor test metho
48、ds for system performance characterization and yearly performance prediction of solar-only systems ISO/DIS 9459-5, Solar heating Domestic water heating systems Part 5: System performance characterization by means of whole-system tests and computer simulation 3 Terms and definitions For the purposes
49、of this European Standard, the terms and definitions given in EN ISO 9488:1999 and EN 12976-1:2005 apply. Licensed Copy: Wang Bin, na, Tue May 09 02:23:32 BST 2006, Uncontrolled Copy, (c) BSIEN 12976-2:2006 (E) 8 4 Symbols and abbreviations Qaux, netnet auxiliary energy demand of a solar heating system delivered by the auxiliary heater to the store or directly to the distribution system (see 5.8.3.2) Qdheat demand QLenergy delivered at the outlet of the solar heating system Qparparasitic energy (electricity) for the collector loop pump(s) and contr
