泵驱动两相循环回路中工质泵的冷损失特性分析  

Cooling Loss Characteristics of Working Fluid Pump for Pump-driven Two-phase Circulation Loop

作　　者：李翠翠 周峰[1] 金英 马国远[1] Li Cuicui;Zhou Feng;Jin Ying;Ma Guoyuan(College of Environmental and Energy Engineering, Beijing University of Technology, Beijing, 100124, China)

机构地区：[1]北京工业大学环境与能源工程学院,北京100124

出　　处：《制冷学报》2020年第2期1-8,共8页Journal of Refrigeration

基　　金：国家自然科学基金(51406002,51776004)资助项目。

摘　　要：为了充分利用室外自然冷源,将泵驱动两相循环回路系统用于数据中心自然冷却。本文通过改变系统温差、泵频率、换热面积、高低温水源温度,对工质泵的冷损失性能进行实验研究。结果表明:高温水源温度不变时,冷损率在温差为16℃、频率为15 Hz及较大换热面时最小;低温水源温度不变时,不同温差下,当蒸发器和冷凝器个数均为5个时系统冷损率最小,且不超过3.20%;高温水源温度越高,冷损率越低,本实验高温水源温度为26℃时,冷损率最低,且不超过2.82%。A pump-driven two-phase circulation loop system was built for data center cooling in order to make full use of the ambient energy.In this study,the cooling loss characteristic of working fluid pump was investigated by changing the system temperature difference,pump frequency,heat exchange area,temperature of the high and low-temperature water jacket.The results showed that the cooling loss rate would be minimum at a temperature difference of 16℃,frequency of 15 Hz,and a large heat exchange area when the temperature of high-temperature water jacket was kept constant.When the temperature of low-temperature water jacket was kept constant,the cooling loss rate with five evaporators and five condensers under different temperatures was the smallest and less than 3.20%.The higher the temperature of high-temperature water jacket,the lower the cooling loss rate.When the temperature of high-temperature water jacket was 26℃,the cooling loss rate was the lowest and did not exceed 2.82%.

关 键 词：数据中心 自然冷却 泵驱动回路 制冷量 冷损率 

分 类 号：TB654[一般工业技术—制冷工程] TB611