吴坚,王芳.相变蓄冷保鲜库设计及温度场分析[J].包装工程,2021,42(7):142-150.
WU Jian,WANG Fang.Design and Temperature Field Analysis of Phase Change Fresh Preservation Storage[J].Packaging Engineering,2021,42(7):142-150. |
| 相变蓄冷保鲜库设计及温度场分析 |
| Design and Temperature Field Analysis of Phase Change Fresh Preservation Storage |
| 投稿时间：2020-09-14 |
| DOI：10.19554/j.cnki.1001-3563.2021.07.019 |
| 中文关键词: 蓄冷 保鲜库 温度场 相变材料 经济性 |
| 英文关键词: cold storage fresh preservation storage temperature field phase change materials economy |
| 基金项目:“十三五”国家重点研发计划(2017YFD0401304) |
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| 中文摘要: |
| 目的 针对传统机械式制冷保鲜库能耗高、内部温度波动大等问题，研发一种小型可移动式、节能型相变蓄冷保鲜库。方法 通过安装制冷机组和100根蓄冷管道，在用电低谷时利用制冷机组为蓄冷管道和保鲜库提供冷源，在用电高峰时利用蓄冷管道内相变材料固-液相变时的吸热特性为冷库释冷，从而实现24 h循环保冷。结果 研究结果表明，在外环境平均温度30.9 ℃下，设定温度为2 ℃时，制冷机组工作时库内温度最大值为2.57 ℃，最小值为1.55 ℃，温度波动平稳;蓄冷管道释放冷量时库内温度最大值为3.45 ℃，最小值为1.98 ℃，夜间温度缓慢上升，维持时间大于14 h，且温度均匀性较好。结论 该保鲜库相较于传统机械式保鲜库能耗更低、温度更均匀，投资回报期为368 d。 |
| 英文摘要: |
| Aiming at the problems of high energy consumption and large internal temperature fluctuations in traditional mechanical refrigeration storage, with the development of phase change cold storage technology, researchers have developed a small portable and energy-saving phase change cold storage. By installing refrigeration units and 100 cold storage pipes in the storage, the refrigeration unit is used to provide cold source for the cold storage pipeline and fresh preservation storage when the power consumption is low, and the heat absorption characteristics of the phase change material in the cold storage pipe during the solid-liquid phase transition are used to keep the cold storage in the cold storage at the peak of power consumption, so as to realize the 24 h cycle cooling. The research results show that when the average temperature of the external environment is 30.9 ℃ and the set temperature is 2 ℃, the maximum value of the internal temperature of the refrigeration unit is 2.57 ℃, the minimum value is 1.55 ℃, and the temperature fluctuation is stable; The maximum internal temperature is 3.45 ℃, and the minimum is 1.98 ℃. The temperature rises slowly at night, the maintenance time is longer than 14h, and the temperature uniformity is good. Compared with the traditional mechanical fresh preservation storage, the fresh preservation storage has low energy consumption, uniform temperature and 368 days investment return period. |
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