Heat Transfer Enhancement in Double Pipe Heat Exchanger for a Parallel flow Arrangement by Using Nano fluid (Al2O3)

This paper present a heat transfer enhancement in double pipe heat exchanger by using nanofluid (Al2O3) for parallel flow. There is great invention in nanoflids used for heat transfer application. The nanofluids has higher thermo physical properties compared to the conventional fluids such as water, ethylene glycol, toluene and oil etc. In this paper Al2O3Nanofluid is used in comparison with Distilled Water for double pipe heat exchanger in parallel flow and counter flow on different flow rates for a certain interval of time. Distilled Water is non Ionic form in nature, so, results using Nanofluid Al2O3 were obtained with experimental work, results on thermal conductivity and heat transfer rate of nanofluids.The thermal conductivity of the conventional fluids such as water and ethylene glycol is less as compare to nanofluids, so the Nanofluid can be used as a coolant in heat exchanger equipment and also the thermal conductivity of (Al) three times greater than that of the other metals so the Al2O3 Nanofluid is more effective as a coolant as compared to other Nano fluids.