Experimental Study on the Heat Transfer Performance of Nanofluid MnFe2O4-Ethylene Glycol/Water on Double-Pipe Heat Exchanger

The heat exchanger is an example of heat transfer applications in industries that commonly found in cooling systems and powerplants. The heat exchangers utilise water, oil, and ethylene glycol (EG) as heat transfer fluids which possess a deficiency in heat transfer characteristics. Nanofluid are expected to improve the heat characteristics of the fluid used in heat exchangers. This research used MnFe2O4 nanoparticles with a volume fraction of 0.05 into the base fluid. The base fluid is a mixture of EG-water with a concentration of 20; 40; 60; and 80. This study aims to understand the heat transfer characteristics of the MnFe2O4-EG/water nanofluid. The experiments were carried out on a double-pipe heat exchanger with variations flow rate 0.2; 0.4; and 0.6 l/min. This study is expected to show the best performance of MnFe2O4-EG/water nanofluid. © 2023 Trans Tech Publications Ltd, Switzerland.