液体CO_2冷藏车制冷系统的毛细管长度与厢体冷负荷匹配的实验研究  

An Experimental Study of the Length of Capillary Tube Matching Cooling Loadin a Liquid Carbon Dioxide Refrigerated Lorry

作　　者：李夔宁[1] 童明伟[1] 严嘉[1] 

机构地区：[1]重庆大学动力工程学院,重庆400044

出　　处：《制冷学报》2004年第2期7-11,共5页Journal of Refrigeration

基　　金：重庆市科技攻关项目 ( 2 0 0 2 5 5 67)

摘　　要：分析了绿色制冷剂———液体CO2 在毛细管中的流动特征 ,对液体CO2 在外径为 2 .1 8mm、内径为 1 .2 0mm ,在一定进、出口压力下 ,对不同长度、不同曲直程度的毛细管内的质量流量进行了实验研究。同时对制冷系统中使用了毛细管的冷藏车的保温性能进行了测试 。This paper firstly discussed the flow characteristic of liquid carbon dioxide in a capillary tube; experimental studies on the mass flux of liquid carbon dioxide in capillary tubes with internal diameter at 1.20mm, external diameter at 2.18mm,a certain pressure at the entrance and exit , and different length and different degree of bend were carried out; the refrigerated lorry's heat preservation capacity was tested, the optimal length of a capillary tube matching cooling load of the refrigerated lorry was obtained.

关 键 词：绿色制冷剂 冷藏车 毛细管长度 冷负荷 流动特征 质量流量 

分 类 号：TB64[一般工业技术—制冷工程]