流体机械

2020, v.48;No.573(03) 68-72+78

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顶置蓄冷板减少融霜热对冷库温度场的试验研究
Experimental Study on the Effect of Reduction of Defrost Heat by the Top-mounted Cold Storage Plate on Temperature Field of Cold Storage

邵阳;刘清江;宋瑞亭;杨凤;张晓宇;吉亚兰;尚继芳;黄远昊;
Shao Yang;Liu Qingjiang;Song Ruiting;Yang Feng;Zhang Xiaoyu;Ji Yalan;Shang Jifang;Huang Yuanhao;Tianjin University of Commerce,School of Mechanical Engineering,Key Laboratory of Tianjin Refrigeration Technology;

摘要(Abstract):

提出了一种顶置蓄冷板的冷库,在冷库融霜的过程中,通过试验研究对比分析了在有无蓄冷板,制冷风机有无霜层4种工况下,融霜热对冷库温度场的影响。研究结果表明:融霜过程中,安装蓄冷板的冷库各截面温度都低于无蓄冷板冷库的截面温度;制冷风机有霜状态下,安装蓄冷板冷库的库温波动比无蓄冷板时减小2.49 ℃,融霜能耗增加1.36%;制冷风机无霜状态下,安装蓄冷板冷库的库温波动比无蓄冷板时减小2.92 ℃,融霜能耗增加1.81%;通过对比可知,在冷库顶部安装蓄冷板可以有效的减小融霜过程中库温的波动,提高冷冻食品的品质。
A cold storage with top-mounted cold storage plate was proposed,during the process of the defrosting in the cold storage,the effects of the defrosting heat on the temperature field of the cold storage under four working conditions with/without the cold storage plates and with/without frost layer of the cooling fan were compared and analyzed through experimental study.The results show that the section temperature of the cold storage equipped with the cold storage plates was lower than that of the cold storage without cold storage plates during the defrosting process.When there was frost on the cooling fan,the temperature fluctuation of the cold storage with cold storage plates was 2.49 ℃ less than that when there were no cold storage plates,the energy consumption for defrosting was increased by 1.36%;under the frost-free condition of the cooling fan,the temperature fluctuation of the cold storage with cold storage plates was reduced by 2.92 ℃,and the energy consumption for defrosting was increased by 1.81% compared with the case without cold storage plates.By comparison,it was known that installation of the cold storage plates at top of the cold storage can effectively reduce the fluctuation of the storage temperature and the quality of frozen foods can be improved.

关键词(KeyWords): 冷库;蓄冷板;融霜热;库温波动
cold storage;cold storage plate;defrosting heat;temperature fluctuation of cold storage

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作者(Author): 邵阳;刘清江;宋瑞亭;杨凤;张晓宇;吉亚兰;尚继芳;黄远昊;
Shao Yang;Liu Qingjiang;Song Ruiting;Yang Feng;Zhang Xiaoyu;Ji Yalan;Shang Jifang;Huang Yuanhao;Tianjin University of Commerce,School of Mechanical Engineering,Key Laboratory of Tianjin Refrigeration Technology;

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