带过冷器的转子式压缩机准二级系统性能实验研究  

Experimental study on the performance of quasi-secondary system with subcooler and rotor compressor

作　　者：白静[1] 和思源 崔四齐[1] 王乐健 郑慧凡[1] 李慧鑫 李程 许闯 谷可轩 Bai Jing;He Siyuan;Cui Siqi;Wan Lejian;Zheng Huifan;Li Huixin;Li Cheng;Xu Chuang;Gu Kexuan(School of Energy&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》2024年第9期58-63,72,共7页Cryogenics and Superconductivity

基　　金：国家自然科学基金(52076219)资助。

摘　　要：针对单级空气源热泵系统在极端工况下性能下降以及排气温度过高的问题,本实验设计并搭建了带有过冷器的准二级压缩系统实验台,并与单级压缩系统的性能进行比较。结果表明:制冷模式下,室外温度从35~43℃时,准二级压缩系统制冷量提高11.23%~13.33%,排气温度降低了7.1~14.3℃。室外温度47℃时单级压缩系统保护性停机,准二级压缩系统能效比EER为1.66,排气温度为95.4℃。制热模式下,室外温度从2~-15℃时,准二级压缩系统制热量提高21.8%~24.1%,能效比COP提高4.9%~15.7%,排气温度降低了13.6~18.2℃。在室外温度-20℃时单级压缩系统保护性停机,准二级压缩系统的COP为1.54,排气温度为94.5℃。此系统提高了空气源热泵在极端工况下的性能,扩大了应用范围。To address the issues of performance degradation and excessive exhaust temperature of single-stage air source heat pump systems under extreme operating conditions,an experimental platform for a quasi-two-stage compression system with a subcooler was devised and constructed,and its performance was compared with that of a single-stage compression system.The results indicate that:In cooling mode,when the outdoor temperature ranges from 35 to 43℃,the cooling capacity of the quasi-two-stage compression system increases by 11.23%to 13.33%,and the exhaust temperature decreases by 7.1 to 14.3℃.When the outdoor temperature is 47℃,the single-stage compression system shuts down protectively.The energy efficiency ratio(EER)of the quasi-two-stage compression system is 1.66,and the exhaust temperature is 95.4℃.In heating mode,when the outdoor temperature varies from 2 to-15℃,the heating capacity of the quasi-two-stage compression system increases by 21.8%to 24.1%,the energy efficiency ratio(COP)increases by 4.9%to 15.7%,and the exhaust temperature decreases by 13.6 to 18.2℃.When the outdoor temperature is-20℃,the single-stage compression system shuts down protectively.The COP of the quasi-two-stage compression system is 1.54,and the exhaust temperature is 94.5℃.This system enhances the performance of air source heat pumps under extreme operating conditions and broadens the application range.

关 键 词：空气源热泵 准二级系统 排气温度 

分 类 号：TK124[动力工程及工程热物理—工程热物理]