液氮充注蓄冷配送箱冷量引入特性试验研究与优化  

Experimental study and optimization on cold introduction characteristics of liquid nitrogen injection cold storage distribution box

作　　者：夏晶晶[1,2] 王广海 王飞仁[1,2] 林诗涛 任俊杰 郭嘉明 Xia Jingjing;Wang Guanghai;Wang Feiren;Lin Shitao;Ren Junjie;Guo Jiaming(Guangdong Mechanical&Electrical Polytechnic,Guangzhou,510515,China;College of Engineering,South China Agricultural University,Guangzhou,510642,China;Maoming Branch,Guangdong Laboratory for Lingnan Modern Agriculture,Maoming,525000,China)

机构地区：[1]广东机电职业技术学院,广州市510515 [2]华南农业大学工程学院,广州市510642 [3]岭南现代农业科学与技术广东省实验室茂名分中心,广东茂名525000

出　　处：《中国农机化学报》2022年第10期92-98,共7页Journal of Chinese Agricultural Mechanization

基　　金：广东省乡村振兴战略专项资金(DZ09-21-1-3278);广东省2019年省级农业科技创新及推广项目(2022KJ101);农产品保鲜物流共性关键技术研发创新团队(2022KJ145);广东省农业科研项目和农业技术推广项目(440000210000000086860)。

摘　　要：液氮充注方式具有效率高、成本低等优点,液氮温度较低,可对金枪鱼蓄冷配送箱进行充冷。为了解不同冷源引入参数对金枪鱼蓄冷配送箱蓄冷特性的影响,搭建金枪鱼蓄冷配送箱试验平台,采用二次旋转回归正交试验方法研究不同液氮充注量、蓄冷板传热面积和蓄冷板装载量对蓄冷配送箱蓄冷特性的影响。试验结果表明:液氮充注量、蓄冷板传热面积和蓄冷板装载量都对蓄冷配送箱蓄冷特性有影响;箱内空气的降温速率随着液氮充注量和蓄冷板传热面积的增大而增大,蓄冷板装载量对降温速率产生的影响不大,当液氮充注量为14 kg、蓄冷板传热面积为0.12 m^(2)时,降温速率可达最大值;箱内蓄冷板的蓄冷效率随着蓄冷板的传热面积和装载量的增大而提高、随着液氮充注量的增大而降低,当液氮充注量为6 kg、蓄冷板传热面积为0.12 m^(2)和蓄冷板装载量为70%时,蓄冷效率可达最大值。研究结果可对蓄冷配送箱冷源引入的优化提供参考。The liquid nitrogen filling method has the advantages of high efficiency and low cost,and the liquid nitrogen temperature is low,which can charge and cool the tuna cold storage distribution box.In order to understand the influence of the different cold source introduction parameters on the cold storage characteristics of the tuna cold storage distribution box,a test platform for the tuna cold storage distribution box was set up to study the effects of factors such as liquid nitrogen quality,heat transfer area and cold plate loading on the cold storage characteristics of the cold storage distribution box using quadratic orthogonal rotation combination design.The test results showed that the liquid nitrogen quality,heat transfer area and cold plate loading had significant effects on the cold storage characteristics of the cold storage distribution box.The cooling rate of the air in the box increased with the increase of liquid nitrogen quality and heat transfer area of the cold storage plate,but the cold plate loading had little effect on the cooling rate.With the parameters of 14 kg liquid nitrogen quality and 0.12 m^(2) heat transfer area,a better cooling rate could be achieved.The cold storage efficiency of the cold storage plate in the box increased with the increase of heat transfer area and cold plate loading and decreased with the increase of liquid nitrogen quality.With the parameters of 6 kg liquid nitrogen quality,0.12 m^(2) heat transfer area and 70%cold plate loading,a better cold storage efficiency could be achieved.The research results will provide a reference for the optimization of the cold source introduction of the cold storage distribution box.

关 键 词：蓄冷配送箱 蓄冷特性 液氮充注量 传热面积 蓄冷板装载量 二次回归正交旋转组合 

分 类 号：S229[农业科学—农业机械化工程]