Heat transfer enhancement analysis of Al2O3 and MgO through counter flow in heat exchanger

Abstract

Heat exchanger is one the most essential heat transfer equipment in thermal area. On that heat transfer and effectiveness enhancement by using nano particles is recently developing method. In this study enhancement of effectiveness focused by using nano particles mixed with cold fluid used in the heat exchanger. Hot fluid is water with 200 °C flow into Counter flow heat exchanger and the cold fluid is mixed with 5% of nano particles which is combination of Aluminium oxide and Magnesium oxides with equal proportion. The inlet temperature of the cold fluid is maintained at 30 °C throughout the experiments. The temperatures of the each place need to measure are obtained by the thermocouples connected on the particular portion of the setup. There are different mass flow rate of cold fluid passed in each successive experiments for the same mass flow rate and inlet temperature of the hot fluid. The consequent exit temperatures of hot and cold fluids were measured and considered for the mathematical calculations of the outcome of the experiments.