关键词: 热管吸热器, 空穴, 数值计算, 热分析

Abstract: Unit heat pipe receiver in advanced solar dynamic system is numerically simulated. With the proposed mathematical model and calculation method, numerical simulation results are compared with experimental data. The temperature field of PCM(phase change material) is calculated and thermal performance of heat pipe receiver is analyzed. Analysis results show that the axial and radial temperature difference of heat pipe are small; the thermal performance of heat pipe receiver is stable and reliable. The existence of void cavity has significant influence on phase change process, which leads to higher temperature gradient of PCM zone when void cavity presents.