Flow and heat transfer performance of plate phase change energy storage heat exchanger

Abstract

In the present work, the phase change energy storage heat exchanger in thermal control system of short-time and periodic working satellite payloads is taken as the research object. Under the condition of constant heated power of the satellite payload, the heat transfer characteristics of phase change energy storage heat exchanger are analyzed by numerical simulation and experimental method. The heat exchanger with fin arrays to enhance heat transfer is filled with tetradecane, whose density varies with temperature. The flow field distribution, the solid-liquid distribution, the temperature distribution, and the phase change process in the plate phase change energy storage heat exchanger unit are analyzed. The flow and heat transfer characteristics of heat exchangers under different fluid-flow rates and temperature were investigated.

Numerical simulation of paraffin melting in circular tube using lattice Boltzmann method

“…Paraffin phase change process has wide and important applications in many fields, such as building energy saving, energy utilization, space exploration, pipeline paraffin removal and other fields [1][2][3][4][5]. Because of the wide melting temperature range and high latent heat of paraffin, the research on paraffin melting at domestic and foreign mainly focuses on the field of phase change materials, including the preparation methods of PCMs [6] and the improvement of solid-liquid phase-change heat transfer [7][8][9][10].…”