环境温度对新型冷库制冷系统性能的影响  

Effect of ambient temperature on the performance of new cold storage refrigeration systems

作　　者：秦兴铎 李海军[1] 苏之勇 安彤 赵超越 陈刚 高嘉阳 张逸博 Qin Xingduo;Li Haijun;Su Zhiyong;An Tong;Zhao Chaoyue;Chen Gang;Gao Jiayang;Zhang Yibo(School of Energy and Environment,Zhongyuan University of Technology,Zhengzhou 450007,China)

机构地区：[1]中原工学院能源与环境学院,郑州450007

出　　处：《低温与超导》2023年第8期89-94,共6页Cryogenics and Superconductivity

基　　金：国家自然科学基金(51676201);河南省高等学校供热空调重点学科开放实验室研究基金(2017HAC201)资助。

摘　　要：针对冷库制冷系统在夏季高温运行时,压缩机排气温度过高及制冷性能减弱的问题,设计搭建了准二级压缩型制冷系统试验台。在库内0℃、压缩机转速为3500 r/min工况下,分析研究不同环境温度对冷库制冷系统性能的影响,并与单级压缩型系统进行对比。研究表明:当环境温度从26℃上升到42℃时,准二级压缩系统的排气温度、排气压力相比单级压缩系统分别降低了11.47%~14.17%、9.40%~13.09%;而压缩机功率、制冷量和COP相比单级压缩系统分别增加了3.04%~4.98%、9.25%~18.80%和3.90%~14.46%。Aiming at the problems of high compressor discharge temperature and weakened refrigeration performance when the cold storage refrigeration system operates at high temperature in summer,a quasi-stage two-stage compression type refrigeration system test bench was designed and constructed.In the library at 0℃with the compressor speed of 3500 r/min,the impact of different ambient temperatures on the performance of the cold storage refrigeration system were studied and analyzed,and compared with the single-stage compression type system.The study shows that when the ambient temperature rises from 26℃to 42℃,the exhaust temperature and exhaust pressure of the quasi-stage two-stage compression system are reduced by 11.47%to 14.17%and 9.40%to 13.09%respectively compared with the single-stage compression system,while the compressor power,refrigeration capacity and COP increase by 3.04%to 4.98%,9.25%to 18.80%and 3.90%to 3.90%respectively compared with the single-stage compression system.

关 键 词：冷库 环境温度 准二级压缩 制冷性能 

分 类 号：TH12[机械工程—机械设计及理论] TB65[一般工业技术—制冷工程]