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Article: Energy and exergy analysis of hydrogen production by a proton exchange membrane (PEM) electrolyzer plant

TitleEnergy and exergy analysis of hydrogen production by a proton exchange membrane (PEM) electrolyzer plant
Authors
KeywordsElectrolytic hydrogen production
Irreversibility
Thermodynamic analysis
Water electrolysis
Issue Date2008
PublisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/enconman
Citation
Energy Conversion And Management, 2008, v. 49 n. 10, p. 2748-2756 How to Cite?
AbstractHydrogen production by a proton exchange membrane (PEM) electrolyzer provides a promising way to store and better utilize the renewable energy resources. Presently, theoretical studies on PEM electrolyzer are still limited, impeding its technological development. Detailed thermodynamic analysis is valuable to identify the key losses and to optimise the performance of PEM electrolyzer plant for hydrogen production. In this study, energy and exergy analysis has been conducted to investigate the thermodynamic-electrochemical characteristics of hydrogen production by a PEM electrolyzer plant. One important feature of this model is that detailed electrochemical characteristics of the PEM electrolyzer are fully incorporated into the thermodynamic analysis. Heat production in the PEM cell due to irreversible losses has been investigated and compared with the thermal energy demand of PEM cell. It is found that a PEM electrolyzer normally operates in an exothermic mode as the heat production due to overpotentials exceeds the thermal energy demand. As the electrical energy input dominates the overall energy input, the exergy efficiency is found about the same as the energy efficiency. Parametric analyses have been performed to investigate the effect of important design and operating parameters on the plant energy conversion efficiency. This study has quantified how much the energy efficiency can decreases by increasing the operating temperature, lowering the current density, reducing the electrolyte thickness, and increasing the electrode catalytic activity. The analysis presented in this paper also offers better understanding of the characteristics of PEM electrolyzer plant for hydrogen production. With additional energy analysis of electricity generated from solar cells or wind turbines, the model presented in this paper is ready for complete energy/exergy analysis of advanced renewable electrolytic hydrogen production plants. © 2008 Elsevier Ltd. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/59017
ISSN
2015 Impact Factor: 4.801
2015 SCImago Journal Rankings: 2.156
ISI Accession Number ID
Funding AgencyGrant Number
Research Grants Council of Hong Kong, PR ChinaHKU7150/05E
CRCG of the University of Hong Kong
Funding Information:

The work described in this paper was jointly supported by a grant from the Research Grants Council of Hong Kong, PR China (HKU7150/05E) and the CRCG of the University of Hong Kong.

References

 

DC FieldValueLanguage
dc.contributor.authorNi, Men_HK
dc.contributor.authorLeung, MKHen_HK
dc.contributor.authorLeung, DYCen_HK
dc.date.accessioned2010-05-31T03:41:29Z-
dc.date.available2010-05-31T03:41:29Z-
dc.date.issued2008en_HK
dc.identifier.citationEnergy Conversion And Management, 2008, v. 49 n. 10, p. 2748-2756en_HK
dc.identifier.issn0196-8904en_HK
dc.identifier.urihttp://hdl.handle.net/10722/59017-
dc.description.abstractHydrogen production by a proton exchange membrane (PEM) electrolyzer provides a promising way to store and better utilize the renewable energy resources. Presently, theoretical studies on PEM electrolyzer are still limited, impeding its technological development. Detailed thermodynamic analysis is valuable to identify the key losses and to optimise the performance of PEM electrolyzer plant for hydrogen production. In this study, energy and exergy analysis has been conducted to investigate the thermodynamic-electrochemical characteristics of hydrogen production by a PEM electrolyzer plant. One important feature of this model is that detailed electrochemical characteristics of the PEM electrolyzer are fully incorporated into the thermodynamic analysis. Heat production in the PEM cell due to irreversible losses has been investigated and compared with the thermal energy demand of PEM cell. It is found that a PEM electrolyzer normally operates in an exothermic mode as the heat production due to overpotentials exceeds the thermal energy demand. As the electrical energy input dominates the overall energy input, the exergy efficiency is found about the same as the energy efficiency. Parametric analyses have been performed to investigate the effect of important design and operating parameters on the plant energy conversion efficiency. This study has quantified how much the energy efficiency can decreases by increasing the operating temperature, lowering the current density, reducing the electrolyte thickness, and increasing the electrode catalytic activity. The analysis presented in this paper also offers better understanding of the characteristics of PEM electrolyzer plant for hydrogen production. With additional energy analysis of electricity generated from solar cells or wind turbines, the model presented in this paper is ready for complete energy/exergy analysis of advanced renewable electrolytic hydrogen production plants. © 2008 Elsevier Ltd. All rights reserved.en_HK
dc.languageengen_HK
dc.publisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/enconmanen_HK
dc.relation.ispartofEnergy Conversion and Managementen_HK
dc.subjectElectrolytic hydrogen productionen_HK
dc.subjectIrreversibilityen_HK
dc.subjectThermodynamic analysisen_HK
dc.subjectWater electrolysisen_HK
dc.titleEnergy and exergy analysis of hydrogen production by a proton exchange membrane (PEM) electrolyzer planten_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0196-8904&volume=49&spage=2748&epage=2756&date=2008&atitle=Energy+and+exergy+analysis+of+hydrogen+production+by+a+proton+exchange+membrane+(PEM)+electrolyzer+planten_HK
dc.identifier.emailLeung, MKH:en_HK
dc.identifier.emailLeung, DYC: ycleung@hku.hken_HK
dc.identifier.authorityLeung, MKH=rp00148en_HK
dc.identifier.authorityLeung, DYC=rp00149en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.enconman.2008.03.018en_HK
dc.identifier.scopuseid_2-s2.0-48849095358en_HK
dc.identifier.hkuros148586en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-48849095358&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume49en_HK
dc.identifier.issue10en_HK
dc.identifier.spage2748en_HK
dc.identifier.epage2756en_HK
dc.identifier.isiWOS:000259432900030-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridNi, M=9268339800en_HK
dc.identifier.scopusauthoridLeung, MKH=8862966600en_HK
dc.identifier.scopusauthoridLeung, DYC=7203002484en_HK
dc.identifier.citeulike9924835-

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