| 摘要: |
| 为强化相变蓄冷板的传热以匹配冷藏运输中多变的用冷需求，本文提出一种热管嵌入式相变蓄冷板以快速平衡物流过程中的热负荷波动，实验研究了热管蒸发段在高热负荷下的释冷性能，并围绕释冷过程搭建了基于热阻分析法的动态解析模型。结果表明：在高热负荷条件下，热管侧的传热过程动态变化显著，在50 ℃工况下平均传热速率最大为42.50 W；模型计算得到的空气侧传热温差和传热速率与实测数据吻合，总体释冷量的计算误差为-3.21%~6.16%；利用该模型对蓄冷板进行模拟分析，在模拟算例中，管排数为4，管径为16 mm时，平均传热速率可达到88.72 W，蒸发段长度为80 mm时，平均传热速率可达到112.54 W。 |
| 关键词: 相变蓄冷板 热管 传热强化 热阻分析法 |
| DOI： |
| 投稿时间：2021-05-26 修订日期：2021-07-21
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| 基金项目:本文受天津市自然科学基金（18JCQNJC77500，18JCQNJC77400）和天津市科技计划项目（20ZYCGSN00310）资助。 |
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| Investigation and Optimization of Discharging Performance Enhancement of Phase Change Cold Storage Panel using Embedded Heat Pipes |
| Tian Shen,Ma Cuiling,Chen Yuhong,Guo Liyuan,Shao Shuangquan,Zhu Tingting,Sun Zhili |
| (Tianjin University of Commerce, Tianjin Key Laboratory of Refrigeration Technology;School of Energy and Power Engineering, Huazhong University of Science and Technology) |
| Abstract: |
| 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. |
| Key words: phase change cold storage panel heat pipe heat transfer enhancement thermal resistance analysis method |
