Availability analysis of hydrogen/natural gas blends combustion in internal combustion engines

Rakopoulos, CD; Scott, MA; Kyritsis, DC; Glakoumis, EG

dc.contributor.author	Rakopoulos, CD	en
dc.contributor.author	Scott, MA	en
dc.contributor.author	Kyritsis, DC	en
dc.contributor.author	Glakoumis, EG	en
dc.date.accessioned	2014-03-01T01:27:58Z
dc.date.available	2014-03-01T01:27:58Z
dc.date.issued	2008	en
dc.identifier.issn	0360-5442	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/18657
dc.subject	availability	en
dc.subject	exergy	en
dc.subject	hydrogen	en
dc.subject	natural gas	en
dc.subject	combustion	en
dc.subject	engine	en
dc.subject.classification	Thermodynamics	en
dc.subject.classification	Energy & Fuels	en
dc.subject.other	TURBOCHARGED DIESEL-ENGINE	en
dc.subject.other	DESTRUCTION	en
dc.subject.other	OPERATION	en
dc.subject.other	IRREVERSIBILITY	en
dc.subject.other	EXERGY	en
dc.title	Availability analysis of hydrogen/natural gas blends combustion in internal combustion engines	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.energy.2007.05.009	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.energy.2007.05.009	en
heal.language	English	en
heal.publicationDate	2008	en
heal.abstract	Possibly one of the most significant advantages that hydrogen may have as a fuel is its potential for increased second-law efficiency, due to fundamental differences in the mechanism of entropy generation during combustion with respect to the usual hydrocarbon-based fuels. A computational investigation of this effect is pursued for the case of mixtures of hydrogen and natural gas combusting in a diesel engine cylinder. The terms of the availability balance during engine operation are studied as a function of hydrogen content of the fuel and the operating parameters of the engine. Of particular importance is the confirmation of results provided in earlier work by the authors that combustion irreversibilities during hydrogen combustion can be drastically reduced. A single-zone computational model of the engine operation is used and the hypothesis of chemical equilibrium is invoked for combustion calculations. For the description of engine processes, such as fuel preparation and heat transfer, computational models established for hydrocarbon fuels are used so that a comparison is performed under the assumption that hydrogen combustion will be feasible in conditions that do not depart exceedingly from current engine configurations. (C) 2007 Elsevier Ltd. All rights reserved.	en
heal.publisher	PERGAMON-ELSEVIER SCIENCE LTD	en
heal.journalName	ENERGY	en
dc.identifier.doi	10.1016/j.energy.2007.05.009	en
dc.identifier.isi	ISI:000253574700018	en
dc.identifier.volume	33	en
dc.identifier.issue	2	en
dc.identifier.spage	248	en
dc.identifier.epage	255	en