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Advantages of integration with industry for electrolytic hydrogen production
KTH, School of Chemical Science and Engineering (CHE), Chemical Engineering and Technology. (Energiprocesser, Energy Processes)
KTH, School of Chemical Science and Engineering (CHE), Chemical Engineering and Technology. (Energiprocesser, Energy Processes)ORCID iD: 0000-0002-0635-7372
2007 (English)In: Energy, ISSN 0360-5442, E-ISSN 1873-6785, Vol. 32, no 1, 42-50 p.Article in journal (Refereed) Published
Abstract [en]

This paper evaluates possible synergies with industry, such as heat and oxygen recovery from the hydrogen production. The hydrogen production technology used in this paper is electrolysis and the calculations include the cost and energy savings for integrated hydrogen production. Electrolysis with heat recovery leads to both cost reduction and higher total energy efficiencies of the hydrogen production. Today about 15–30% of the energy supplied for the production is lost and most of it can be recovered as heat. Utilization of the oxygen produced in electrolysis gives further advantages. The integration potential has been evaluated for a pulp and paper industry and the Swedish energy system, focusing on hydrogen for the transportation sector. The calculated example shows that the use of the by-product oxygen and heat greatly affects the possibility to sell hydrogen produced from electrolysis in Sweden. Most of the energy losses are recovered in the example; even gains in energy for not having to produce oxygen with cryogenic air separation are shown. When considering cost, the oxygen income is the most beneficial but when considering energy efficiency, the heat recovery stands for the greater part.

Place, publisher, year, edition, pages
2007. Vol. 32, no 1, 42-50 p.
Keyword [en]
Hydrogen production; Industry; Integration; Synergy; Co-generation; Hydrogen energy systems; Hydrogen economy
National Category
Energy Engineering
URN: urn:nbn:se:kth:diva-9253DOI: 10.1016/ 000242413300005ScopusID: 2-s2.0-33749241512OAI: diva2:37761

QC 20100909

Available from: 2008-10-13 Created: 2008-10-13 Last updated: 2016-05-18Bibliographically approved
In thesis
1. Bringing fuel cells to reality and reality to fuel cells: A systems perspective on the use of fuel cells
Open this publication in new window or tab >>Bringing fuel cells to reality and reality to fuel cells: A systems perspective on the use of fuel cells
2008 (English)Doctoral thesis, comprehensive summary (Other scientific)
Abstract [en]

With growing awareness of global warming and fear of political instability caused by oil depletion, the need for a society with a sustainable energy system has been brought to the fore. A promising technology often mentioned as a key component in such a system is the fuel cell technology, i.e. the energy conversion technology in focus in this thesis. The hopes and expectations on fuel cells are high and sometimes unrealistically positive. However, as an emerging technology, much remains to be proven and the proper use of the technology in terms of suitable applications, integration with society and extent of use is still under debate. This thesis is a contribution to the debate, presenting results from two fuel cell demonstration projects, looking into the introduction of fuel cells on the market, discussing the prospects and concerns for the near-term future and commenting on the potential use in a future sustainable energy system.

Bringing fuel cells to reality implies finding near-term niche applications and markets where fuel cell systems may be competitive. In a sense fuel cells are already a reality as they have been demonstrated in various applications world-wide. However, in many of the envisioned applications fuel cells are far from being competitive and sometimes also the environmental benefit of using fuel cells in a given application may be questioned. Bringing reality to fuel cells implies emphasising the need for realistic expectations and pointing out that the first markets have to be based on the currently available technology and not the visions of what fuel cells could be in the future.

The results from the demonstration projects show that further development and research on especially the durability for fuel cell systems is crucial and a general recommendation is to design the systems for high reliability and durability rather than striving towards higher energy efficiencies. When reliability and durability are achieved fuel cell systems may be introduced in niche markets where the added values presented by the technology compensate for the initial high cost.

Place, publisher, year, edition, pages
Stockholm: KTH, 2008. viii, 70 p.
Trita-CHE-Report, ISSN 1654-1081 ; 2008:61
Assessment, CUTE, Demonstration projects, Emerging technology, Evaluation, Fuel cell buses, Fuel cell systems, Fuel cells, Hype, Interdisciplinary, Niche markets, PEM, Radical technologies, SOFC, Strategic niche markets, Sustainability
National Category
Energy Engineering
urn:nbn:se:kth:diva-9192 (URN)978-91-7415-108-4 (ISBN)
Public defence
2008-10-24, F3 (Flodissalen), Lindstedtsvägen 26, KTH, Stockholm, 13:30 (English)
Energy Systems ProgrammeClean Urban Transport for EuropeGlashusEtt
QC 20100909Available from: 2008-10-13 Created: 2008-10-02 Last updated: 2010-09-09Bibliographically approved

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