Comparative first- and second-law parametric study of transient diesel engine operation

Rakopoulos, CD; Giakoumis, EG

dc.contributor.author	Rakopoulos, CD	en
dc.contributor.author	Giakoumis, EG	en
dc.date.accessioned	2014-03-01T01:23:42Z
dc.date.available	2014-03-01T01:23:42Z
dc.date.issued	2006	en
dc.identifier.issn	0360-5442	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/17108
dc.subject	transient analysis	en
dc.subject	first law	en
dc.subject	second law	en
dc.subject	parametric study	en
dc.subject.classification	Thermodynamics	en
dc.subject.classification	Energy & Fuels	en
dc.subject.other	COMBUSTION	en
dc.subject.other	EXERGY	en
dc.subject.other	SIMULATION	en
dc.title	Comparative first- and second-law parametric study of transient diesel engine operation	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.energy.2005.10.022	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.energy.2005.10.022	en
heal.language	English	en
heal.publicationDate	2006	en
heal.abstract	A computer model is developed for studying the first- and second-law (availability) balances of a turbocharged diesel engine, operating under transient load conditions. Special attention is paid to the direct comparison between the results from the two laws, for various operating parameters of the engine. The model simulates the transient operation on a degree crank angle basis, using a detailed analysis of mechanical friction, a separate consideration for the processes of each cylinder during a cycle ("multi-cylinder" model) and a mathematical model of the fuel pump. Experimental data taken from a marine duty, turbocharged diesel engine, located at the authors' laboratory, are used for the evaluation of the model's predictive capabilities. The first-law (e.g., engine speed, fuel pump rack position, engine load, etc.) and second-law (e.g., irreversibilitics, heat loss and exhaust gases) terms for the diesel engine cylinder are both computed and depicted in comparison, using detailed diagrams, for various engine operating parameters. It is revealed that, at least for the specific engine type and operation, a thermodynamic, dynamic or design parameter can have a conflicting impact on the engine transient response as regards energy and availability properties, implying that both a first- and second-law optimization is needed for best performance evaluation. (c) 2005 Elsevier Ltd. All rights reserved.	en
heal.publisher	PERGAMON-ELSEVIER SCIENCE LTD	en
heal.journalName	ENERGY	en
dc.identifier.doi	10.1016/j.energy.2005.10.022	en
dc.identifier.isi	ISI:000240821500019	en
dc.identifier.volume	31	en
dc.identifier.issue	12	en
dc.identifier.spage	1927	en
dc.identifier.epage	1942	en