制冷学报2017，Vol.38Issue(2)：96-101,6.DOI:10.3969/j.issn.0253-4339.2017.02.096
四种制冷剂重力再循环蒸发器的理论计算与实验研究
Theoretical Calculation and Experimental Research of Four Refrigerants on Gravity Recirculation Evaporator
摘要
Abstract
The homogeneous phase flow model was established to analyze gravity recirculating evaporators in the condition that four kinds of refrigerants are used respectively.The experimental device of gravity recirculating refrigeration system was set up,and the experimental results were compared with the theoretical calculation results nnder different working conditions.Taking R404A as an example,when the air temperature in heat insulation decreased from 0 ℃ to-25 ℃,the deviation of the experimental value from the theoretical value of the heat transfer coefficient lowers from 15.91％ to 3.01％ gradually.The deviation of the experimental value from the theoretical value of the cooling capacity decreases from 14.43％ to 2.07％.The lower the air temperature in heat insulation is,the smaller the deviation be comes,which indicates that the running state of the gravity recirculating refrigeration system is in better agreement with the theoretical operating state in lower temperature.This model was used to predict the running states of the four refrigerants.And it shows that comparing with the other three refrigerants,the heat transfer coefficient and cooling capacity of the R410A are the hi,ghest when the supplying height is in a relatively low level.关键词
再循环蒸发器/对比/理论分析/实验研究Key words
gravity recirculation evaporator/comparison/theoretical analysis/experimental research分类
通用工业技术引用本文复制引用
阮建文,臧润清,孙志利,赵东..四种制冷剂重力再循环蒸发器的理论计算与实验研究[J].制冷学报,2017,38(2):96-101,6.基金项目
本文受天津市高等学校科技发展基金计划重点项目(160024)资助.(The project was supported by the Key Project of Development of Tianjin Municipal Eudcation Commission(No.160024).) （160024）
