Analysis of the icing and melting process in a coil heat exchanger

The ice storage coil heat exchanger are analyzed based on unstable heat conduction theory, the analytical solution of solidified layer is obtained, and get the solution of the temperature distribution in both solid phase and liquid phase. Through numerical simulation, it is found that the agitator can rise the convective heat transfer coefficient of the structure and enhance heat exchange efficiency. The temperature distribution of surface of the evaporation coil during the deicing process is measured by experiment. It is found that melting phenomenon occurred at the lower part of the ice layer first, and the outer side of the ice layer melting faster than the inner side.