EXHAUST HEAT RECOVERY IN I. C. ENGINE BY USING THERMO ELECTRIC GENERATOR

Abstract

The increasingly worldwide problem regarding rapid economy development and a relative shortage of energy, the internal combustion engine exhaust waste heat and environmental pollution has been more emphasized heavily recently. Higher depletion rate and increasing price of fossil fuels have motivated many researchers to harness energy from the waste heat from internal combustion engines, and thus improve the overall efficiency. Traditionally, only 30 to 35 percent of energy is being utilized to run the vehicles and accessories mounted on the engine and left amount of energy is wasted in various ways like in the form of exhaust and cooling of engine components resulting in to entropy rise and serious environmental pollution.This paper proposes and implements a waste heat recovery system using a thermoelectric generator (TEG) designed for four stroke I.C. engine. The system converts the waste heat from the exhaust manifold into electrical energy using a TEG. The experimental results demonstrate that the proposed system recovers considerable amount of waste heat which can be used to power some auxiliary automobile devices and other applications like mobile charging.