A Study of Extended Surface Heat Exchange with Frosting : 1st Report, Overall Heat Transfer Characteristics

Abstract

The effect of deposition on heat and mass transfer was investigated both theoretically and experimentally in a finned tube type heat exchanger under frosting conditions. A method for predicting the efficiency of heat and mass transfer was presented based on a uniform frosting model. The predicted results were in good agreement with the experimental data obtained under the two typical operating conditions of heat exchanger, i.e., the constant air flow rate and the constant revolution number of blower.