1、BSI Standards PublicationEuropean product standard for combined heating power systems using gas fuelBS EN 50465:2015National forewordThis British Standard is the UK implementation of EN 50465:2015. It supersedes BS EN 50465:2008, which is withdrawn.The UK committee advises, for the calculation of s
2、and son of cogeneration space heaters the methodology described in the CommissionCommunication, reference 2014/C 207/02 should be used. This method isrobust, scientific, provides a fair comparison across all technologies and isaligned with established methods for assessing and comparing cogeneration
3、 performance.The UK participation in its preparation was entrusted to TechnicalCommittee GEL/105, Fuel cell technologies.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisions ofa cont
4、ract. Users are responsible for its correct application. T h e B r i t i s h S t a n d a r d s I n s t i t u t i o n 2 0 15P u b l i s h e d b y B S I S t a n d a r d s L i m i t e d 2 0 15ISBN 978 0 580 76019 8ICS 27.070; 97.100.99Compliance with a British Standard cannot confer immunity fromlegal
5、obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 28 February 2015.A m e n d m e n t s/corrigenda i s s u e d s i n c e p u b l i c a t i o nD a t eText affectedBRITISH STANDARDBS EN 50465:2015EUROPEAN STANDARDNORME EUROPENNEEUROPISC
6、HE NORMEN 50465 January 2015 ICS 27.070; 97.100.20 Supersedes EN 50465:2008 English Version European product standard for combined heating power systemsusing gas fuel Appareils gaz - Appareils produisant de la chaleur et dellectricit combines dont le dbit calorifique nominal est infrieur ou gal 70 k
7、W Gasgerte - Gerte zur Kraft-Wrme-Kopplung mit einerNennwrmebelastung kleiner oder gleich 70 kW This European Standard was approved by CENELEC on 29 October 2014. CEN and CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this Euro
8、pean 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 CEN-CENELEC Management Centre or to any CEN and CENELEC member. This European Standard exists in three offic
9、ial versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN and CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions.CEN and CENELEC members are the nation
10、al standards bodies and national electrotechnical committees 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, Netherlands,
11、Norway, Poland, Portugal, Romania, Slovakia, Slovenia,Spain, Sweden, Switzerland, Turkey and United Kingdom European Committee for Electrotechnical Standardization Comit Europen de Normalisation ElectrotechniqueEuropisches Komitee fr Elektrotechnische Normung CEN-CENELEC Management Centre: Avenue Ma
12、rnix 17, B-1000 Brussels 2015CEN/CENELEC All rights of exploitation in any form and by any means reserved worldwide for CEN national Members and for CENELEC Members. Ref. No. EN 50465:2015 E EN 50465:2015 2 Contents Foreword 6 1 Scope 8 2 Normative references 8 3 Terms and definitions . 11 4 Classif
13、ication . 26 4.1 Gases/Categories . 26 4.2 Mode of air supply and evacuation of combustion products . 26 4.3 Maximum water side operating pressure 28 4.4 Expansion system . 28 5 Constructional requirements . 28 5.1 General construction . 28 5.2 Use and servicing 30 5.3 Connections to the gas and wat
14、er pipes . 30 5.4 Soundness 31 5.5 Supply of air and evacuation of combustion products 32 5.6 Requirements for a fan incorporated in a mCHP appliance . 33 5.7 Gas/air ratio controls . 33 5.8 Air proving . 34 5.9 Checking the state of operation 35 5.10 Operational safety in the event of failure of th
15、e energy supply for the control systems . 35 5.11 Drainage 35 5.12 Conversion to different gases . 35 5.13 Materials and thickness. 36 5.14 Thermal insulation . 42 5.15 Durability against corrosion of metallic combustion product circuits . 42 5.16 Requirements for valves as parts of the gas circuit
16、43 5.17 Combustion products evacuation duct 44 5.18 Design . 44 5.19 Gas carrying circuit . 45 5.20 Electrical equipment 47 5.21 Requirements for adjusting, control and safety devices . 48 5.22 Burners 54 6 Operational requirements . 54 6.1 General requirements . 54 6.2 Soundness 55 6.3 Heat input a
17、nd heat and electrical output . 58 6.4 Safety of operation (temperature / limit gas) . 58 6.5 Start / Release and adjusting, control and safety devices (if applicable) . 63 6.6 Efficiency . 68 6.7 Operation 68 6.8 Combustion . 68 6.9 Resistance of materials to pressure 69 6.10 Hydraulic resistance 7
18、0 6.11 Formation of condensate 70 6.12 Designation and measurement of reference temperatures of flue systems . 70 6.13 Mechanical resistance and stability of ducts, terminal and fitting pieces 71 6.14 Requirements for plastic in the combustion product evacuation ducts, terminals and fitting pieces f
19、or mCHP appliances . 71 6.15 Requirements for elastomeric seals and elastomeric sealants in the combustion product evacuation ducts, terminals and fitting pieces 75 6.16 Special provisions for mCHP appliances intended to be installed in a partially protected place 77 7 Test methods . 77 7.1 General
20、test conditions . 77 BS EN 50465:2015 3 EN 50465:2015 7.2 Soundness 86 7.3 Heat input and heat and electrical output . 90 7.4 Safety of operation 92 7.5 Start / Release and adjusting, control and safety devices 107 7.6 Efficiency . 112 7.7 Operation 120 7.8 Combustion . 120 7.9 Resistance of the mat
21、erials to pressure 126 7.10 Hydraulic resistance 126 7.11 Formation of condensate 127 7.12 Designation and measurement of reference temperatures of flue systems . 128 7.13 Mechanical resistance and stability of ducts, terminal and fitting pieces 128 7.14 Requirements for plastic in the combustion pr
22、oduct evacuation ducts, terminals and fitting pieces for mCHP appliances . 129 7.15 Tests for elastomeric seals and elastomeric sealants in the combustion product evacuation ducts, terminals and fitting pieces 132 7.16 Special provisions for mCHP appliances intended to be installed in a partially pr
23、otected place 134 8 EMC / electrical requirements 134 8.1 Relevant for the Gas safety 134 8.2 Relevant for the Electrical safety related to the grid with indirect effect to gas safety 134 8.3 Relevant for the EMC 134 9 Marking, installation and operating instructions . 135 9.1 mCHP appliance marking
24、 . 135 9.2 Installation instructions 138 9.3 Operating instructions (i.e. users instructions) . 141 9.4 Conversion instructions . 142 9.5 Presentation 142 Annex A (informative) Different gas connections in common use in the various countries . 143 Annex B (informative) Classification of type B and t
25、ype C mCHP appliances . 144 Annex C (informative) Composition of the gas circuit . 149 Annex D (informative) Practical method of calibrating the test rig to enable the heat loss Dpto be determined 151 Annex E (informative) A-deviations . 152 Annex F (informative) Main symbols and abbreviations used
26、153 Annex G (informative) Examples for marking . 154 Annex H (informative) Calculation of conversions of NOx155 Annex I (informative) Test rig for the measurement of the stand-by heat losses . 156 Annex CC (normative) Test methods to determine the effects of long-term thermal load, long-term condens
27、ate exposure, condensing/ non- condensing cycling and resistance to UV radiation . 158 Annex DD (informative) Variations in gas quality 159 Annex EE (informative) Calculation of the efficiency for ErP . 164 Annex ZZ (informative) Coverage of Essential Requirements of EU Directives . 167 Bibliography
28、 170 BS EN 50465:2015EN 50465:2015 4 Figures Figure 1 Typical set-up for a fuel cell mCHP appliance . 15 Figure 2 Typical set-up for a Stirling engine mCHP appliance 15 Figure 3 Typical set-up for an internal combustion engine mCHP appliance 16 Figure 4 Example of a sampling probe for the measuremen
29、t of the products of combustion . 79 Figure 5 Example of the location of the probe for a C type appliance . 80 Figure 6 Test rig for the soundness of the gas carrying circuit 85 Figure 7 Test rig for the soundness of components (pressure drop method) 86 Figure 8 Test rig for thermostats: short cut c
30、irculation . 94 Figure 9 Test rig for thermostats with heat exchanger 95 Figure 10 Test rig for type C1appliances, equipped with horizontal wind protection device at a vertical wall . 99 Figure 11 Test rig for type C1appliances for installation in buildings with tilted roof . 100 Figure 12 Test rig
31、for type C3and C9appliances for installation in flat roofed buildings . 101 Figure 13 Test rig for type C3and C9appliances for installation in buildings with tilted roof . 102 Figure 14 Measuring points for the stand-by heat losses 114 Figure 15 Test rig for the determination of hydraulic resistance
32、 127 Figure B.1 Type B2. 144 Figure B.2 Type B3. 144 Figure B.3 Type C1. 145 Figure B.4 Type C3. 145 Figure B.5 Type C4. 146 Figure B.6 Type C5. 146 Figure B.7 Type C6. 147 Figure B.8 Type C8. 147 Figure B.9 Type C9. 148 Figure C.1 Automatic gas shut off valves in the gas supply line for mCHP applia
33、nces . 149 Figure C.2 Automatic gas shut off valves in the gas supply line for permanent or alternating mCHP appliances 150 Figure I.1 Test rig . 156 Figure DD.1 The relation between the (extreme) limit gases (ELG), the reference gas (RG) and the normal distribution gas (NDG) the appliance is design
34、ed for. The current standard assumes that the normal distribution is close to the reference gas . 160 Figure DD.2 The relation between the (extreme)limit gases (ELG), the reference gas (RG), the distribution limit gases (DLG),and the normal distribution gas(NDG) the appliance is designed for. The DL
35、G are to be considered if the normal distribution gas may vary to a large extent over the lifetime of the appliance 162 Figure EE.1 Equivalent heating efficiency and linear extrapolation from = 0,75/CC. . 165 BS EN 50465:2015 5 EN 50465:2015 Tables Table 1 Mechanical properties and chemical composit
36、ions of carbon and stainless steels 37 Table 2 Minimum requirements for cast iron 37 Table 3 Parts in aluminium and aluminium alloys 38 Table 4 Parts in copper or copper alloys . 38 Table 5 Minimum thicknesses for rolled parts . 38 Table 6 Nominal minimum thicknesses of mCHP appliance sections . 38
37、Table 7 Weld joints and welding processes . 39 Table 8 Metallic combustion products circuit material specifications 43 Table 9 Composition of the gas circuit . 47 Table 10 Maximum admissible leakage rates 56 Table 11 NOxclasses . 69 Table 12 Criteria for testing long-term resistance to thermal load
38、. 72 Table 13 Criteria for testing long-term resistance to condensate exposure 73 Table 14 Criteria for testing resistance to condensing/non-condensing cycling 74 Table 15 Group sizes of internal flue diameters 74 Table 16 Criteria for testing long-term resistance to thermal load . 75 Table 17 Crite
39、ria for testing-long term resistance to condensate exposure 76 Table 18 Weighting factor for weighting in the calculation* 116 Table 19 (CO2)Nconcentration of the combustion products, in percent 120 Table 20 Weighting factors 124 Table 21 Weighting factors 125 Table 22 Exposure time in weeks at rais
40、ed temperatures . 130 Table 23 Composition of test condensate for corrosion 130 Table 24 Condensate composition, related to construction classes 132 Table 25 Supplementary markings 137 Table A.1 Gas connections conditions in common use in the various countries . 143 Table F.1 Main symbols and abbrev
41、iations used 153 Table G.1 Category(ies), direct and indirect country(ies) of destination 154 Table G.2 Example 1: Possibilities for the second gas family . 154 Table G.3 Example 2: Possibilities for the third gas family 154 Table H.1 Conversion of the emission value of NOxfor second family gases .
42、155 Table H.2 Conversion of the emission value of NOx for third family gases . 155 Table EE.1 Energy outputs and primary energy inputs. 164 Table ZZ.1 Clauses of this European Standard addressing essential requirements or other provisions of EC Directives 167 BS EN 50465:2015EN 50465:2015 6 Foreword
43、 This document (EN 50465:2015) has been prepared by CEN/CLC Joint Working Group FCGA, “Fuel cell gas appliances“. The following dates are fixed: latest date by which this document has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2015-10
44、-29 latest date by which the national standards conflicting with this document have to be withdrawn (dow) 2017-10-29 This document supersedes EN 50465:2008. EN 50465:2015 includes the following significant technical changes with respect to EN 50465:2008: inclusion of requirements for Stirling Engine
45、“ and Internal Combustion Engine“; modification of requirements for fuel cell heating appliances to reflect experience since the first edition; partly adaptation to EN 15502-1 and EN 15502-2-1, especially to reflect the new requirements for air proving devices; introduction of additional types of co
46、mbustion air and flue duct systems; modification of the total efficiency calculation; modifications of NOXweighting and calculation. Micro-cogeneration is also known as micro combined heat and power mCHP. mCHP is an efficient way to deliver heating, cooling and electricity. It is based on the simult
47、aneous production of electrical and thermal energy, both of which are used. The central and most fundamental principle of mCHP is that in order to maximize the many benefits that arise from it, systems should be based according to the heat demand of the application. A fuel cell, Stirling engine and
48、internal combustion engine are just some of the significant technologies to be the thermal heart of a mCHP appliance. mCHP appliances that are already established in the market are used to provide central heating and domestic hot water in residential buildings. Due to the development of new technolo
49、gy other solutions than those described in this European Standard are possible if these solutions provide at least an equivalent level of safety. Matters related to quality assurance systems, tests during production, and certificates of conformity of auxiliary devices are not dealt with in this European Standard. Due to the change in scope to include technologies in addition to fuel cells, the title
