A Review on Additional Power Generation from Exhaust Gas of Diesel Engine using Parallel Flow Shell and Tube Heat Exchanger

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. Out of the total heat supplied to the engine in the form of fuel, approximately, 30 to 40% is converted into useful mechanical work; the remaining heat is expelled to the environment through exhaust gases and engine cooling systems, resulting in to entropy rise and serious environmental pollution, so it is required to utilized waste heat into useful work. The study shows the high temperature diesel engine exhaust gas can be an important source of heat to operate a bottoming Rankine cycle to produce additional power using a shell and tube heat exchanger at exhaust system of a diesel engine; therefore the main objective of this paper is to assess this waste heat recovery technology based on current developments, research trends and its future in an automotive application. As a result the article drew the conclusion that waste heat recovery and its utilization will remain a good prospect in future automotive engine application.