摘要
气泵驱动回路热管是数据中心自然冷却的重要系统型式,可有效降低其冷却总能耗,气泵更是其中的关键专有部件。在前期气泵研究工作的基础上,专门针对小型滚动转子式气泵,建立其泄漏间隙模型,对不同间隙泄漏量、制冷剂种类对其泄漏特性的影响展开分析。研究表明:四种气泵间隙泄漏的泄漏量峰值均远低于常规压缩机,其泄漏量波动幅度也远小于压缩机的波动幅度;不同工质在气泵和压缩机中的泄漏量变化趋势基本一致;在轴向间隙泄漏中,R134a和R22工质的泄漏量峰值高于R32和R410A,按照其泄漏量大小排序为R134a>R22>R32>R410A,而在其他三种间隙结构中则相反;总泄漏量中,径向间隙泄漏量和轴向间隙泄漏量占比较大。
The booster-driven loop heat pipe system,as an important free cooling system in data centers,can reduce the cooling energy consumption of data centers effectively.The booster is the key component to supply the driving force.Based on the former researches by our group,the leakage gap model of a rolling piston booster was established,and the effects of different leakages and refrigerants were studied and compared.The results indicate that the peak leakages of four leakage gaps for the booster are much lower than that of the compressor,as well as the fl uctuation ranges.The variations of the leakages for four refrigerants are the same for both the booster and the compressor.For the axial clearance leakage,the peak leakages of R134a and R22 are much higher than those of R32 and R410A.The leakages are ordered as R134a,R22,R32,R410A from large to small in sequence,which are the opposite for the other three leakage gaps.Among total gap leakages the radial and axial gap leakages are the main leakages.
作者
郑波
宋宇
徐步青
王芮敏
周峰
马国远
ZHENG Bo;SONG Yu;XU Buqing;WANG Ruimin;ZHOU Feng;MA Guoyuan(State Key Laboratory of Air-Conditioning Equipment and System Energy Conservation,Zhuhai,519070;Gree Electric Appliances,Inc.of Zhuhai Zhuhai 519070;Department of Refrigeration and Cryogenics Engineering,Beijing University of Technology,Beijing,100124)
出处
《家电科技》
2023年第2期62-67,77,共7页
Journal of Appliance Science & Technology
基金
空调设备及系统运行节能国家重点实验室开放基金项目(ACSKL2021KT03)
中国制冷学会课题(KT202003)
北京市教委科技计划一般项目(KM201910005017)。
关键词
数据中心
自然冷却
气泵
间隙泄漏
工质
Data center
Free cooling
Booster
Gap leakage
Refrigerant
