Exergy and Energy Analysis of Diesel Engine using Karanja Methyl Ester under Varying Compression Ratio

Abstract

In the present study, there is a need to reduce the consumption of conventional fuel and related fossil fuels. So, in order to promote the use of renewable sources such as biofuels there is a requirement for the effective evaluation of the performance of engines based on the second law of thermodynamic. In this paper, the analysis of energy, exergy, mean gas temperature and exhaust gas temperature of a compression ignition (CI) engine using diesel and Karanja methyl ester blends are done. The results are calculated at various compression ratios under full load and at different engine loads at a compression ratio of 18:1. It is observed that the exergy efficiency, mean gas temperature, brake thermal efficiency increases with increase in compression ratio as well as load. The exhaust gas temperature and destruction of exergy decreases with increase in compression ratio and increases with increase in load for all blends of fuel.