Energy Storage Science and Technology ›› 2025, Vol. 14 ›› Issue (9): 3301-3310.doi: 10.19799/j.cnki.2095-4239.2025.0220

• Energy Storage Materials and Devices • Previous Articles     Next Articles

Influence of copper foam on the heat transfer and temperature control characteristics of phase change materials under different force fields

Qifa GAO1(), Nan ZHANG1(), Zhaoli ZHANG1, Yanxia DU2, Yanping YUAN1   

  1. 1.School of Mechanical Engineering, Southwest Jiaotong University, Chengdu 610031, Sichuan, China
    2.State Key Laboratory of Aerodynamics, China Aerodynamics Research and Development Center, Mianyang 621000, Sichuan, China
  • Received:2025-03-06 Revised:2025-03-31 Online:2025-09-28 Published:2025-09-05
  • Contact: Nan ZHANG E-mail:qfgao98@163.com;zhangn09@swjtu.edu.cn

Abstract:

Phase change material (PCM)-based latent heat storage cooling technology has broad applications in aerospace thermal management because of its high energy storage density and passive temperature regulation capability. Copper foam, which is commonly employed to enhance the thermal conductivity of PCMs, suppresses natural convection while improving heat transfer. Complex force fields, including hypergravity, microgravity, and variable acceleration induced by vehicle maneuvers, interact with this convection suppression and introduce uncertainties in the overall heat transfer enhancement effect. Herein, experiments were conducted to analyze the effects of copper foam on the heat transfer and temperature control performance of PCM under different force field conditions. The results indicated that under positive force fields, incorporating copper foam reduces the PCM melting time by up to 62.5% and extends the effective temperature control time by up to 153.4%. Under negative force fields, the melting enhancement effect of copper foam decreases as the force field intensity increases, and the temperature uniformity and late-stage effective temperature control time of composite phase change materials (CPCMs) slightly decrease compared with that of pure PCM. Notably, the addition of copper foam considerably improves the heat transfer stability of the phase change thermal control unit under complex force fields; the fluctuation amplitudes of the melting time and temperature control duration of CPCMs are reduced by 86.8% and 52.6%, respectively, compared with that of pure PCM. These findings provide valuable theoretical insights for the optimal design of phase change materials in aerospace thermal management systems under complex force field conditions.

Key words: copper foam, phase change materials, different force fields, heat transfer performance, heat transfer stability

CLC Number: