孙锦涛,游辉,谢晶.蓄冷板对冷库保温的影响实验[J].包装工程,2022,43(13):107-116.
SUN Jin-tao,YOU Hui,XIE Jing.Experimental Research on Influence of Cold Storage Plate on Insulation of Cold Storage[J].Packaging Engineering,2022,43(13):107-116. |
| 蓄冷板对冷库保温的影响实验 |
| Experimental Research on Influence of Cold Storage Plate on Insulation of Cold Storage |
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| DOI：10.19554/j.cnki.1001-3563.2022.13.014 |
| 中文关键词: 相变蓄冷材料 冷板 冷库 冷链 |
| 英文关键词: phase change cold storage material cold plate cold storage cold chain |
| 基金项目:上海市科委科技创新行动计划（19DZ1207503）；上海市科委公共服务平台建设项目（20DZ2292200） |
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| 中文摘要: |
| 目的 为了缓解当下电网的电力失衡问题，提出利用蓄冷材料与冷库相结合的方案，使相变材料在用电低峰时期蓄冷，在用电高峰时期释冷，以缓解电网负荷。方法 测量不同材料的热工性能，筛选出适合冷库温度的相变蓄冷材料，制成蓄冷板，并在实际冷库中进行实验。收集安放在库内温度测点的数据，并对数据进行分析。结果 放置蓄冷板后，冷库的温度波动值从2 ℃降至0.5 ℃。放置蓄冷板后库内温度的不均匀系数在4 h后为0.56，而未放置蓄冷板库内温度的不均匀系数在2.5 h时已达到1.2。放置蓄冷板后冷库的温度回升时间较对照冷库最高延缓了126 min，放置蓄冷板3 h后冷库温度上升了8 ℃，而无蓄冷板的冷库温度上升了13 ℃。结论 蓄冷板可以有效缓解冷库温度的回升，并使冷库内温度分布得更加均匀。未来可通过提高蓄冷材料和冷板材料的导热系数，以及添加冷板肋片等方法来强化换热，达到更好的释冷、保冷效果。 |
| 英文摘要: |
| This paper aims to alleviate the power imbalance problem of the current power grid by proposing a combination of cold storage materials and cold storage. In order to relieve the load of power grid, the phase change material can store cold in the low peak period and release cold in the peak period. The thermal properties of different materials were measured to screen out the phase-change cold storage materials suitable for the temperature of the cold storage, and the cold storage plates were made and tested in the actual cold storage. Temperature data was collected and analyzed through temperature measurement points placed in the cold storage. The temperature fluctuation in the cold storage where the cold storage plate was placed was reduced from 2 ℃ to 0.5 ℃. The coefficient of temperature unevenness in the cold storage with cold storage plates was 0.56 after 4 hours, while the coefficient of unevenness without cold storage plates reached 1.2 at 2.5 hours. Compared with the others, the temperature rise of the cold storage with cold storage board was delayed by 126 minutes at the highest. After 3 hours, the temperature of the cold storage with cold storage plates increased by 8 ℃, while the temperature of the cold storage without cold storage plates increased by 13 ℃. The cold storage plate can effectively alleviate the temperature rise of the cold storage and make the temperature distribution in the cold storage more uniform. In the future, the heat exchange can be enhanced by enhancing the thermal conductivity of the cold storage material and the cold plate material, and adding fins to the cold plate to achieve a better cooling effect. |
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