Experimental Study on Heat Transfer Characteristics of Hybrid Type of Gas-to-Gas Heat Exchanger (Effect of Fin Configuration)

Abstract

To investigate the effect of fin configuration on the total heat recovery rate H_<*.N> of a multi-layered type of gas-to-gas heat exchanger, a series of experiments have been performed. From the experiments, it is clarified that walls with equally spaced four straight fins of 1mm in thickness, 53mm in height and 155mm in length have little or rather reverse effect on H_<*.N>. On the other hand, walls with equally spaced three zigzag fins of 1mm in thickness, 53mm in height and 463mm in overall length are shown quite effective to increase H_<*.N>.