EXPERIMENTAL INVESTIGATION OF HYBRID NANOFLUID ON THERMOSYPHON TYPE WICKLESS HEAT PIPE HEAT EXCHANGER THERMAL PERFORMANCE

Mechanical Engineering

Waste heat is heat which is produced in a process by way of fuel combustion or chemical reaction, and then dumped into the environment even though it can be still be reused for some useful and economic purpose. The essential quality of heat is not the amount instead of its value. The strategy of how to recover this heat depends in part on the temperature of the waste heat gases and the economics involved. Direct and indirect benefits are involved in heat recovery. Recovery of waste heat has a direct effect on the efficiency of the process and indirect benefits involve reduction in pollution, equipment size and auxiliary air consumption. This paper focuses on investigation of thermal performance of wickless heat pipe heat exchanger by using hybrid nanofluid (CuO+CNT/H20) as a working fluid. Hybrid nano fluid of 2% volume concentration with 75% of copper oxide (CuO) and 25% of carbon nano tube (CNT) was prepared. Several studies have performed on heat pipe heat exchanger using conventional fluids and nanofluids. Effectiveness of heat pipe heat exchanger charged with hybrid nanofluid will be compared with heat pipe heat exchanger effectiveness charged with conventional fluid.

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