Performance analysis of compact heat exchanger for effective utilization of waste heat from diesel engine exhaust and optimization with CFD

摘要: Internal Combustion Engines are the world's leading users of fossil fuels. In this, Compression ignition Engines are among the most frequently used power generation units because of their increased thermal efficiency. Nearly 34 to 42% of the heat energy is wasted through exhaust gas and only 13 to 16% of the heat energy is transformed into convenient mechanical output. The few number of waste heat recovery (WHR) mechanism and procedures comprise of Rankine cycle, Turbo-charging and thermoelectric generators which are used to increase the thermal efficiency of devices and to minimize pollutions. Shell-and-tube style heat exchangers often used by the IC engines for WHR because of their efficient heat transfer rate. For effective recovery of waste heat the heat exchanger its performance is improved by adding fins, hardening, improving the swirl motion by baffle orientation and by adding additives in the …