Speed and load effects on the availability balances and irreversibilities production in a multi-cylinder turbocharged diesel engine

Rakopoulos, CD; Giakoumis, EG

dc.contributor.author	Rakopoulos, CD	en
dc.contributor.author	Giakoumis, EG	en
dc.date.accessioned	2014-03-01T01:13:25Z
dc.date.available	2014-03-01T01:13:25Z
dc.date.issued	1997	en
dc.identifier.issn	1359-4311	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/12455
dc.subject	Irreversibilities	en
dc.subject	Load	en
dc.subject	Second-law analysis	en
dc.subject	Speed	en
dc.subject	Turbocharged diesel engine	en
dc.subject.classification	Thermodynamics	en
dc.subject.classification	Energy & Fuels	en
dc.subject.classification	Engineering, Mechanical	en
dc.subject.classification	Mechanics	en
dc.subject.other	Enthalpy	en
dc.subject.other	Entropy	en
dc.subject.other	Exhaust gases	en
dc.subject.other	Friction	en
dc.subject.other	Gibbs free energy	en
dc.subject.other	Heat transfer	en
dc.subject.other	Loads (forces)	en
dc.subject.other	Speed	en
dc.subject.other	Temperature	en
dc.subject.other	Thermal conductivity	en
dc.subject.other	Thermodynamics	en
dc.subject.other	Availability balances	en
dc.subject.other	Inlet air	en
dc.subject.other	Irreversibilities	en
dc.subject.other	Multi cylinder turbocharged diesel engine	en
dc.subject.other	Second law analysis	en
dc.subject.other	Diesel engines	en
dc.title	Speed and load effects on the availability balances and irreversibilities production in a multi-cylinder turbocharged diesel engine	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/S1359-4311(96)00014-2	en
heal.identifier.secondary	http://dx.doi.org/10.1016/S1359-4311(96)00014-2	en
heal.language	English	en
heal.publicationDate	1997	en
heal.abstract	This work presents an analysis of the operation of a multi-cylinder, turbocharged, indirect injection diesel engine from a second-law analysis point of view. For this purpose, a single-zone thermodynamic model following the filling and emptying modelling technique is developed. A second-law analysis is performed in all parts of the diesel engine plant, which provides all the existing availability terms and accounts for the evaluation of every component's irreversibilities. A complete second-law terms tabulation is given for the maximum speed-full load operation case, which is compared with its first-law counterpart. A detailed parametric study is performed in all parts of the diesel engine plant comprising the effects of speed and load on the availability terms in a range that covers the whole operation of the engine under turbocharged action. Various second-law (availability) terms, such as indicated and brake work, heat transfer, inlet air, exhaust gas and friction, are presented, together with all the processes' irreversibilities, as a percentage of the fuel's chemical availability, for each engine operating condition. It is thus highlighted how the two basic engine operating parameters, i.e. speed and load, affect the operation of this engine under a second-law perspective. A compression ratio investigation on the availability terms is also performed. Copyright (C) 1996 Elsevier Science Ltd.	en
heal.publisher	PERGAMON-ELSEVIER SCIENCE LTD	en
heal.journalName	Applied Thermal Engineering	en
dc.identifier.doi	10.1016/S1359-4311(96)00014-2	en
dc.identifier.isi	ISI:A1997WD20000009	en
dc.identifier.volume	17	en
dc.identifier.issue	3	en
dc.identifier.spage	299	en
dc.identifier.epage	313	en