Heat Transfer Augmentation by using Metallic Nanoparticles at Different Concentrations in a Counter Flow Heat Exchanger

Heat exchangers are essential devices for almost all industrial and automobile applications. In this paper, the heat transfer and pressure drop characteristics of the pure water and the water mixed with copper oxide, Iron oxide and aluminum oxide with different mass concentration based nanofluid flowing in a horizontal circular pipe under constant heat flux condition are studied. The nanofluids are made in three different mass concentrations i.e. 0.5%, 1.0%, 1.5% and 2%. The results show that the thermal conductivity is increases with increasing temperature and mass concentration.