胡时发,王达,杨相政,贾连文,徐双喜.环形热管蓄冷保温箱的模拟优化与实验研究[J].包装工程,2022,43(23):216-224.
HU Shi-fa,WANG Da,YANG Xiang-zheng,JIA Lian-wen,XU Shuang-xi.Simulation Optimization and Experimental Study on Cold Storage Incubator with Annular Heat Pipe[J].Packaging Engineering,2022,43(23):216-224. |
| 环形热管蓄冷保温箱的模拟优化与实验研究 |
| Simulation Optimization and Experimental Study on Cold Storage Incubator with Annular Heat Pipe |
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| DOI：10.19554/j.cnki.1001-3563.2022.23.026 |
| 中文关键词: 蓄冷保温箱 温度均匀性 环形热管 数值模拟 |
| 英文关键词: cold storage incubator temperature uniformity annular heat pipe numerical simulation |
| 基金项目:广东省重点领域研发计划项目(2019B020222001) |
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| 中文摘要: |
| 目的 解决蓄冷冷链运输中存在的温度波动大、均匀性差等问题。方法 文中提出通过环形热管来优化箱内温度场均匀性的方案，以柠檬为实验材料，采用FLUENT数值模拟软件对不同环形热管结构下柠檬保温过程进行仿真，并对4层环形热管模型进行实验验证，确定箱内温度分布规律。结果 环形热管均对保温箱温度场均匀性有明显改善作用，4层环形热管与无环形热管的蓄冷保温箱相比，蓄冷保温过程结束时，不均匀度由1.71减少为0.83，降低幅度为51.46%，温度极差可由8.32 ℃减小为3.24 ℃，降低幅度为61.06%。顶部留出的空隙会出现环流现象，能一定幅度地减少有效蓄冷保温时间，增大温度极差和温度不均匀度。结论 验证实验和模拟结果的温度偏差在1.25 ℃以内，说明建立的模型适用于该蓄冷保温箱的数值模拟。针对文中箱体结构，最佳热管环数为4层左右;其结果可为优化蓄冷保温箱的温度分布提供参考依据。 |
| 英文摘要: |
| The work aims to solve the problems of large temperature fluctuation and poor uniformity in the cold storage chain transportation. A scheme of optimizing the uniformity of temperature field in the incubator through annular heat pipe was proposed. With lemon as experimental material, FLUENT simulation software was used to stimulate the heat preservation process of lemon with annular heat pipes of different structures, and the model of 4-layer annular heat pipe was verified experimentally to determine the temperature distribution in the incubator. The annular heat pipe obviously improved the uniformity of temperature field. Compared with the cold storage incubator without annular heat pipe, at the end of the cold storage insulation process, the non-uniformity of incubator with 4-layer annular heat pipe was reduced from 1.71 to 0.83, decreasing by 51.46%, and the temperature range was reduced from 8.32 ℃ to 3.24 ℃, decreasing by 61.06%. In addition, there would be circulation in the gap at the top of incubator, reducing the incubator holding time and increasing the temperature range and temperature non-uniformity to a certain extent. The temperature deviation between experimental and simulation results is within 1.25 ℃, indicating that the model is suitable for the numerical simulation of the cold storage incubator. For the proposed incubator structure, the optimal layer of annular heat pipes is about 4. The results provide a reference for optimizing the temperature distribution of cold storage incubator. |
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