Exergy Analysis of a Variable Compression Ratio Engine Operated on Diesel and Pine Seed Oil Biodiesel Blends

In this study biodiesel produced from pine seed oil is used, this is non-edible oil so there is no competition between food and fuel. In order to gain knowledge about exergy of a engine-run biodiesel, two blends of biodiesel were used as fuel in a four-stroke, single-cylinder, direct injection, water-cooled diesel engine. The experiment was conducted for steady state so that accurate measurements of different data are possible. Second law analysis was applied for exergy balance. From investigation, it was found that exergy supplied by biodiesel blends were similar to diesel, and losses were more for biodiesel blends. The maximum exergy efficiencies for diesel, B10 and B15 were 40.27%, 39.25% and 38.25%, respectively. From evaluations, it can be concluded that pine seed oil biodiesel blends approximated the performance of diesel.