Table of Contents
ISRN Mechanical Engineering
Volume 2011, Article ID 542840, 6 pages
http://dx.doi.org/10.5402/2011/542840
Research Article

Exergy Analysis of Porous Medium Combustion Engine Cycle

Department of Mechanical Engineering, MVGR College of Engineering, Vizianagaram 535005, India

Received 17 July 2011; Accepted 14 August 2011

Academic Editors: C. Del Vecchio and C. F. Gao

Copyright © 2011 N. Ravi Kumar. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The need of the fossil fuels is ever increasing in the areas of manufacturing, transportation, heating, and electricity. Nearly 90% of the energy requirement in transport sector is met by combustion of fossil fuels only. Porous media (PM) combustion is an effective method, which can increase the combustion efficiency as well as minimize environmental pollution. The present paper is aimed at thermodynamic analysis of ideal IC engine cycles with porous media combustion. Two practically possible cycles, namely, periodic and permanent contact of gas with porous medium are considered, and the ideal cycle analyses are made. It is found that PM engine with periodic contact is more efficient than permanent contact type. The exergy analysis also reveals that the energy loss due to irreversibilities in the periodic contact type is less than that of the permanent contact type. With the help of model calculations and graphs, the performance of these two cycles is compared and optimal operating conditions are also evaluated and presented along with the suggestions for enhancing the performance of homogeneous PM combustion in IC engines.