Comparative design study of a diesel exhaust gas heat exchanger for truck applications with conventional and state of the art heat transfer enhancements

Mavridou, S; Mavropoulos, GC; Bouris, D; Hountalas, DT; Bergeles, G

dc.contributor.author	Mavridou, S	en
dc.contributor.author	Mavropoulos, GC	en
dc.contributor.author	Bouris, D	en
dc.contributor.author	Hountalas, DT	en
dc.contributor.author	Bergeles, G	en
dc.date.accessioned	2014-03-01T01:33:01Z
dc.date.available	2014-03-01T01:33:01Z
dc.date.issued	2010	en
dc.identifier.issn	1359-4311	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/20280
dc.subject	Heat exchanger	en
dc.subject	Exhaust gas	en
dc.subject	Diesel engine	en
dc.subject	Truck	en
dc.subject	Heat transfer	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	METAL FOAMS	en
dc.subject.other	PERFORMANCE	en
dc.subject.other	EMISSIONS	en
dc.subject.other	RATES	en
dc.subject.other	FLOW	en
dc.title	Comparative design study of a diesel exhaust gas heat exchanger for truck applications with conventional and state of the art heat transfer enhancements	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.applthermaleng.2010.01.003	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.applthermaleng.2010.01.003	en
heal.language	English	en
heal.publicationDate	2010	en
heal.abstract	The exhaust gas of heavy duty diesel engines can provide an important heat source that may be used in a number of ways to provide additional power and improve overall engine efficiency. The sizing of a heat exchanger that can manage the heat load and still be of reasonable size and weight without excessive pressure drop is of significant importance especially for truck applications. This is the subject of the present work. To approach the problem, a total of five different configurations are investigated and a comparison of conventional and state of the art heat transfer enhancement technologies is included. Two groups of configurations are examined: (a) a classical shell and tube heat exchanger using staggered cross-flow tube bundles with smooth circular tubes, finned tubes and tubes with dimpled surfaces and (b) a cross-flow plate heat exchanger, initially with finned surfaces on the exhaust gas side and then with 10 ppi and 40 ppi metal foam material substituting for the fins. Calculations were performed, using established heat exchanger design methodologies and recently published data from the literature to size the aforementioned configurations. The solutions provided reduce the overall heat exchanger size, with the plate and fin type consisting of plain fins presenting the minimum pressure drop (up to 98% reduction compared to the other configurations), and the 40 ppi metal foam being the most compact in terms of size and weight. Durability of the solutions is another issue which will be examined in a future investigation. However, coupling of the exhaust heat exchanger after a particulate trap appears to be the most promising solution to avoid clogging from soot accumulation. (C) 2010 Elsevier Ltd. All rights reserved.	en
heal.publisher	PERGAMON-ELSEVIER SCIENCE LTD	en
heal.journalName	APPLIED THERMAL ENGINEERING	en
dc.identifier.doi	10.1016/j.applthermaleng.2010.01.003	en
dc.identifier.isi	ISI:000276275000020	en
dc.identifier.volume	30	en
dc.identifier.issue	8-9	en
dc.identifier.spage	935	en
dc.identifier.epage	947	en