嵌入热管强化相变蓄冷板释冷性能的研究及优化

To strengthen the heat transfer of a phase change cold storage panel to match the variable cooling demand of refrigerated transportation, this study proposes a type of phase change cold storage panel with embedded heat pipes to quickly balance the heat load fluctuation in the logistics process. The discharging performance of the heat pipe evaporation section under a high heat load is experimentally studied. A dynamic analytical model is developed for the cooling process based on the thermal resistance analysis method. The results show that under the condition of a high heat load, the dynamic characteristics of the heat transfer process for the heat pipe side are observed. Under a 50 ℃ working condition, the highest average heat transfer rate reaches 42. 50 W. The temperature difference and heat transfer rate at the airside calculated by the model are consistent with the measured data. The calculation error of the overall cooling capacity is -3. 21%-6. 16%. The model is used to simulate and analyze the cold storage panel. In the simulation cases, the average heat transfer rate reaches 88. 72 W with four heat pipe rows and a 16 mm tube diameter. The average heat transfer rate reaches 112. 54 W with an evaporation section length of 80 mm.