1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS ISO 22734-2:2011Hydrogen generators usingwater electrolysis processPart 2: Residential applicationsBS ISO 22734-2:2011 BRITISH STANDARDNational forewordThis British Standard i
2、s the UK implementation of ISO 22734-2:2011.The UK participation in its preparation was entrusted to TechnicalCommittee PVE/3/8, Gas containers - Hydrogen technologies.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport t
3、o include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2012ISBN 978 0 580 57048 3ICS 71.100.20; 71.120.99Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was publish
4、ed under the authority of theStandards Policy and Strategy Committee on 31 January 2012.Amendments issued since publicationDate Text affectedBS ISO 22734-2:2011Hydrogen generators using water electrolysis process Part 2:Residential applicationsGnrateurs dhydrogne utilisant le procd dlectrolyse de le
5、au Partie 2: Applications rsidentielles ISO 2011Reference numberISO 22734-2:2011(E)First edition2011-11-15ISO22734-2INTERNATIONAL STANDARDBS ISO 22734-2:2011ISO 22734-2:2011(E)COPYRIGHT PROTECTED DOCUMENT ISO 2011All rights reserved. Unless otherwise specified, no part of this publication may be rep
6、roduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISOs member body in the country of the requester.ISO copyright officeCase postale 56 CH-1211 Geneva 20Tel. + 41 22 74
7、9 01 11Fax + 41 22 749 09 47E-mail copyrightiso.orgWeb www.iso.orgPublished in Switzerlandii ISO 2011 All rights reservedBS ISO 22734-2:2011ISO 22734-2:2011(E) ISO 2011 All rights reserved iiiContents PageForeword .vIntroduction .vi1 Scope 12 Normative references .13 Terms and definitions .54 Operat
8、ing conditions 64.1 Energy consumption 64.2 Feed water specifications .64.3 Ambient environment .74.4 Purge gas .74.5 Oxygen venting 74.6 Hydrogen venting 74.7 Delivery of hydrogen 85 Mechanical equipment .85.1 General requirements .85.2 General materials requirements 95.3 Enclosures 95.4 Pressure-b
9、earing components 115.5 Fans and ventilators .135.6 Pumps .135.7 Heat transfer system 135.8 Connection to potable water 146 Electrical equipment, wiring and ventilation .146.1 Fire and explosion hazard protection requirements .146.2 Electrical equipment .167 Control systems .187.1 General .187.2 Con
10、trol function in the event of failure197.3 Programmable electronic equipment .197.4 Start .197.5 Emergency stop .197.6 Stop .207.7 Self-correctable conditions 207.8 Interconnected installations .207.9 Safety components .207.10 Remote control systems .217.11 Alarms 217.12 Purge gas quantity 217.13 Re
11、set .217.14 Suspension of safeguards 218 Ion transport medium .218.1 Electrolyte .218.2 Membrane 229 Protection of service personnel 2210 Test methods 2310.1 Type (qualification) tests .2310.2 Routine tests .3311 Marking and labelling .3411.1 General requirements .3411.2 Hydrogen generator marking .
12、34BS ISO 22734-2:2011ISO 22734-2:2011(E)iv ISO 2011 All rights reserved11.3 Marking of components .3511.4 Warning signs.3512 Documentation accompanying the hydrogen generator 3512.1 General .3512.2 Hydrogen generator ratings .3612.3 Hydrogen generator installation .3612.4 Hydrogen generator operatio
13、n 3812.5 Hydrogen generator maintenance 39Annex A (informative) Hydrogen-assisted corrosion 40Annex B (informative) Flammability limits of hydrogen .41Bibliography .42BS ISO 22734-2:2011ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards b
14、odies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizati
15、ons, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.International Standards are drafted in accordance with the rules given in the
16、ISO/IEC Directives, Part 2.The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the
17、 member bodies casting a vote.Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights.ISO 22734-2 was prepared by Technical Committee ISO/TC 197, Hydrogen tec
18、hnologies.ISO 22734 consists of the following parts, under the general title Hydrogen generators using water electrolysis process: Part 1: Industrial and commercial applications Part 2: Residential applicationsISO 22734-2:2011(E) ISO 2011 All rights reserved vBS ISO 22734-2:2011IntroductionThe techn
19、ology in this part of ISO 22734 is as follows.In a hydrogen generator cell, electricity causes dissociation of water into hydrogen and oxygen molecules. An electric current is passed between two electrodes separated by a conductive electrolyte or “ion transport medium”, producing hydrogen at the neg
20、ative electrode (cathode) and oxygen at the positive electrode (anode). As water is H2O, twice the volume of hydrogen is produced compared with oxygen.Hydrogen gas produced using electrolysis technology can be utilized immediately or stored for later use.The cell(s), and electrical, gas processing,
21、ventilation, cooling, monitoring equipment and controls are contained within an enclosure. Gas compression and feed water conditioning and auxiliary equipment may also be included.ISO 22734-2:2011(E)vi ISO 2011 All rights reservedBS ISO 22734-2:2011INTERNATIONAL STANDARD ISO 22734-2:2011(E)Hydrogen
22、generators using water electrolysis process Part 2:Residential applications1 ScopeThis part of ISO 22734 defines the construction, safety and performance requirements of packaged hydrogen gas generation appliances, herein referred to as hydrogen generators, using electrochemical reactions to electro
23、lyse water to produce hydrogen.This part of ISO 22734 is applicable to hydrogen generators that use the following types of ion transport medium: group of aqueous bases; solid polymeric materials with acidic function group additions, such as acid proton exchange membrane (PEM).This part of ISO 22734
24、is applicable to hydrogen generators intended for indoor and outdoor residential use in sheltered areas, such as car-ports, garages, utility rooms and similar areas of a residence. This part of ISO 22734 includes cord-connected equipment for outdoor and garage use only.Portable generators as well as
25、 hydrogen generators that can also be used to generate electricity, such as reversible fuel cells, are excluded from the scope of this part of ISO 22734.Hydrogen generators that also supply oxygen as a product are excluded from the scope of this part of ISO 22734.This part of ISO 22734 is intended t
26、o be used for certification purposes.2 Normative referencesThe following referenced documents are indispensable for the application of this document. For datedreferences, only the edition cited applies. For undated references, the latest edition of the referenceddocument (including any amendments) a
27、ppliesISO 1182, Reaction to fire tests for products Non-combustibility testISO 3746, Acoustics Determination of sound power levels and sound energy levels of noise sources using sound pressure Survey method using an enveloping measurement surface over a reflecting planeISO 3864-2, Graphical symbols
28、Safety colours and safety signs Part 2: Design principles for product safety labelsISO 4126-1, Safety devices for protection against excessive pressure Part 1: Safety valvesISO 4126-2, Safety devices for protection against excessive pressure Part 2: Bursting disc safety devicesISO 4126-6, Safety dev
29、ices for protection against excessive pressure Part 6: Application, selection and installation of bursting disc safety devicesISO 7000, Graphical symbols for use on equipment Index and synopsis ISO 2011 All rights reserved 1BS ISO 22734-2:2011ISO 7010, Graphical symbols Safety colours and safety sig
30、ns Registered safety signsISO 7866, Gas cylinders Refillable seamless aluminium alloy gas cylinders Design, construction and testingISO 9300, Measurement of gas flow by means of critical flow Venturi nozzlesISO 9951, Measurement of gas flow in closed conduits Turbine metersISO 9614-1, Acoustics Dete
31、rmination of sound power levels of noise sources using sound intensity Part 1: Measurement at discrete pointsISO 9809-1, Gas cylinders Refillable seamless steel gas cylinders Design, construction and testing Part 1: Quenched and tempered steel cylinders with tensile strength less than 1 100 MPaISO 1
32、0286, Gas cylinders TerminologyISO 10790, Measurement of fluid flow in closed conduits Guidance to the selection, installation and use of Coriolis meters (mass flow, density and volume flow measurements)ISO 11119-1, Gas cylinders of composite construction Specification and test methods Part 1: Hoop
33、wrapped composite gas cylinders and tubesISO 11119-2, Gas cylinders of composite construction Specification and test methods Part 2: Fully wrapped fibre reinforced composite gas cylinders with load-sharing metal linersISO 11119-3, Gas cylinders of composite construction Specification and test method
34、s Part 3: Fully wrapped fibre reinforced composite gas cylinders and tubes with non-metallic and non-load-sharing metal linersISO 12100, Safety of machinery General principles for design Risk assessment and risk reductionISO 12499, Industrial fans Mechanical safety of fans GuardingISO 13709, Centrif
35、ugal pumps for petroleum, petrochemical and natural gas industriesISO 13850, Safety of machinery Emergency stop Principles for designISO 13854, Safety of machinery Minimum gaps to avoid crushing of parts of the human bodyISO 13857, Safety of machinery Safety distances to prevent hazard zones being r
36、eached by upper and lower limbsISO 14511, Measurement of fluid flow in closed conduits Thermal mass flowmetersISO 14687 (all parts), Hydrogen fuel Product specificationISO 14847, Rotary positive displacement pumps Technical requirementsISO 15534-1, Ergonomic design for the safety of machinery Part 1
37、: Principles for determining the dimensions required for openings for whole-body access into machineryISO 15534-2, Ergonomic design for the safety of machinery Part 2: Principles for determining the dimensions required for access openingsISO 15649, Petroleum and natural gas industries PipingISO/TR 1
38、5916, Basic considerations for the safety of hydrogen systemsISO 16111, Transportable gas storage devices Hydrogen absorbed in reversible metal hydrideISO 16528-1, Boilers and pressure vessels Performance requirementsISO 17398, Safety colours and safety signs Classification, performance and durabili
39、ty of safety signsISO 22734-2:2011(E)2 ISO 2011 All rights reservedBS ISO 22734-2:2011ISO 22734-1, Hydrogen generators using water electrolysis process Part 1: Industrial and commercial applicationsISO 26142, Hydrogen detection apparatus Stationary applicationsIEC 60034-1, Rotating electrical machin
40、es Part 1: Rating and performanceIEC 60068-2-18:2010, Environmental Testing Part 2-18: Tests Test R and Guidance: WaterIEC 60079-0, Explosive atmospheres Part 0: Equipment General requirementsIEC 60079-2:2007, Explosive atmospheres Part 2: Equipment protection by pressurized enclosures “p”IEC 60079-
41、10-1, Explosive atmospheres Part 10-1: Classification of areas Explosive gas atmospheresIEC 60079-29-2, Explosive atmospheres Part 29-2: Gas detectors Selection, installation, use and maintenance of detectors for flammable gases and oxygenIEC 60079-30-1, Explosive atmospheres Part 30-1: Electrical r
42、esistance trace heating General and testing requirementsIEC 60146 (all parts), Semiconductor convertersIEC 60204-1:2005, Safety of machinery Electrical equipment of machines Part 1: General requirementsIEC/TR 60269-5, Low-voltage fuses Part 5: Guidance for the application of low-voltage fusesIEC 603
43、35-1:2010, Household and similar electrical appliances Safety Part 1: General requirementsIEC 60335-2-41, Household and similar electrical appliances Safety Part 2-41: Particular requirements for pumpsIEC 60335-2-51, Household and similar electrical appliances Safety Part 2-51: Particular requiremen
44、ts for stationary circulation pumps for heating and service water installationsIEC 60335-2-80, Household and similar electrical appliances Safety Part 2-80: Particular requirements for fansIEC 60364-4-43, Low-voltage electrical installations Part 4-43: Protection for safety Protection against overcu
45、rrentIEC 60364-6:2006, Low-voltage electrical installations Part 6: VerificationIEC 60417, Graphical symbols for use on equipmentIEC 60439-1, Low-voltage switchgear and controlgear assemblies Part 1: Type-tested and partially type-tested assembliesIEC 60439-2, Low-voltage switchgear and controlgear
46、assemblies Part 2: Particular requirements for busbar trunking systems (busways)IEC 60439-3, Low-voltage switchgear and controlgear assemblies Part 3: Particular requirements for low-voltage switchgear and controlgear assemblies intended to be installed in places where unskilled persons have access
47、for their use Distribution boardsIEC 60439-5, Low-voltage switchgear and controlgear assemblies Part 5: Particular requirements for assemblies for power distribution in public networksIEC 60445, Basic and safety principles for man-machine interface, marking and identification Identification of equip
48、ment terminals, conductor terminations and conductorsIEC 60364-6:2006, Low-voltage electrical installations Part 6: VerificationIEC 60529, Degrees of protection provided by enclosures (IP Codes)ISO 22734-2:2011(E) ISO 2011 All rights reserved 3BS ISO 22734-2:2011IEC 60534 (all parts), Industrial-pro
49、cess control valvesIEC 60695-11-10, Fire hazard testing Part 11-10: Test flames 50 W horizontal and vertical flame test methodsIEC 60695-11-20, Fire hazard testing Part 11-20: Test flames 500 W Flame test methodsIEC 60730-1:2010, Automatic electrical controls for household and similar use Part 1: General requirementsIEC 60747 (all parts), Semiconductor devices Discrete d
