基于R410a的冷冻系统制冷性能实验研究  

Experimental study on refrigeration performance of refrigerating system based on R410a

作　　者：李海军[1] 王世豪 苏之勇 许琦 王瑞 蔡夏 王锐 张青阁 LI Hai-jun;WANG Shi-hao;SU Zhi-yong;XU Qi;WANG Rui;CAI Xia;WANG Rui;ZHANG Qing-ge

机构地区：[1]中原工学院能源与环境学院,河南郑州450007

出　　处：《节能》2023年第10期45-48,共4页Energy Conservation

基　　金：河南省研究生教育改革与质量提升工程项目(项目编号:YJS2021JD08)。

摘　　要：针对常规的冷库冷冻系统存在压缩机排气温度高、制冷性能低等问题,搭建了一套基于R134a准双级转子式压缩的微通道换热器型冷冻系统。通过改变库外温度,研究不同温度下补气工况以及不补气工况对冷冻系统性能的影响。结果显示:随着库外环境温度的升高,压缩机功率和排气温度均升高,制冷量和系统COP均下降。采用中压补气技术后,与不补气工况相比,排气温度降低32.50%~37.56%,制冷量上升17.66%~37.06%,压缩机功率提高12.31%~32.23%,系统COP升高1.12%~4.74%。Aiming at the problems of high exhaust temperature of compressor and low refrigeration performance in conventional cold storage refrigeration system,a set of micro-channel heat exchanger refrigeration system based on R134A quasi-double-stage rotor compression was built.By changing the temperature outside the reservoir,the influence of the cooling system performance under different conditions of air replenishment and no air replenishment was studied.The results show that with the increase of the ambient temperature outside the reservoir,the compressor power and exhaust temperature increase,while the cooling capacity and system COP decrease.After adopting the medium pressure gas replenishment technology,compared with the condition without gas replenishment,the exhaust temperature is reduced by 32.50%~37.56%,the cooling capacity is increased by 17.66%~37.06%,the compressor power is increased by 12.31%~32.23%,and the COP of the system is increased by 1.12%~4.74%.

关 键 词：冷冻系统 环境温度 中压补气 制冷性能 

分 类 号：TB657[一般工业技术—制冷工程]