Abstract
In this paper, a new design of heat exchanger is proposed and designed to recover exergy from exhaust of a diesel engine. Twenty vortex generators with optimum dimensions and angle of attack are located in the exhaust to reach more exergy recovery as well as low pressure drop. The experiments are done in five engine loads (0, 20, 40, 60 and 80% of full load) and four water mass flow rates (20, 30, 40 and 50 g/s). After the exergy analysis, results of irreversibility, recovered heat and exergy amount, pressure drop, etc. are compared in different engine loads and speeds. Also, the results of Nusselt number, friction factor and recovered exergy from this new heat exchanger design are compared with simple double pipe heat exchangers.
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