冷库翅片管蒸发器性能测试实验研究  

Experimental study on performance test of cold storage finned tube evaporator

作　　者：窦伟 申江[1] Dou Wei;Shen Jiang(Tianjin Key Laboratory of Refrigeration Technology,Tianjin University of Commerce,Tianjin 300134,China)

机构地区：[1]天津商业大学天津市制冷技术重点实验室

出　　处：《低温与超导》2019年第11期72-76,共5页Cryogenics and Superconductivity

摘　　要：利用低温风洞实验室研究了过冷度、过热度、蒸发温度、迎面风速对冷库蒸发器性能的影响。结果表明:当环境温度为0℃和-18℃时,过冷度从1℃增加到6℃,制冷量近乎呈线性增长,平均每过冷1℃制冷量分别增加了2.63%、2.72%;过热度从0℃增加到5℃,制冷量随过热度的增大而逐渐减小,平均每过热1℃制冷量分别减小了0.99%、0.38%;迎面风速从3.8 m/s增加到5.8 m/s,制冷量随迎面风速的增大而逐渐增大,平均每增加0.5 m/s的风速制冷量分别增大了1.01%、0.57%。蒸发温度从-29℃增加到-25℃,制冷量近乎呈线性增长,平均每增加1℃蒸发温度制冷量增加了4.6%。The effects of subcooling, superheat, evaporation temperature and face velocity on the performance of the cold storage evaporator were studied using a cryogenic wind tunnel laboratory.The results show that when the Ambient temperature is 0 ℃ and-18 ℃,the Subcooling degree increases from 1 ℃ to 6 ℃,the cooling capacity increases almost linearly, and the average cooling capacity increases by 2.63% and 2.72% per 1℃;The superheat degree increases from 0 ℃ to 5 ℃, and the cooling capacity decreases with the increase of superheat degree, the average cooling capacity decreases by 0.99% and 0.38% per 1 ℃, and the face velocity increases from 3.8 m/s to 5.8 m/s, the cooling capacity increases with the increase of the face velocity, and the average cooling capacity per 0.5 m/s increases by 1.01% and 0.57% respectively. The evaporation temperature increases from-29 ℃ to-25 ℃, and the cooling capacity increases almost linearly, the average cooling capacity increases by 4.6% for each 1 ℃ increase.

关 键 词：过冷度 过热度 迎面风速 蒸发温度 

分 类 号：TB657.[一般工业技术—制冷工程]