摘要
气泵驱动复合冷却机组能够在利用自然冷源的同时,实现全年一体化运行,从而有效降低数据中心的全年冷却能耗。课题组研制了不同型号气泵及其复合冷却机组,通过实验对比,分析全年温差跨度下2种型号气泵部件的吸排气压力和质量流量的变化,以及复合冷却机组的性能表征差异。结果表明:相同工况下,大力矩气泵(1^(#))吸排气压比小于小力矩气泵(2^(#));实验温差范围内,大力矩气泵吸排气压比下降53.56%,小力矩气泵吸排气压比下降32.89%,大力矩气泵驱动复合冷却机组制冷量和能效比均高于小力矩气泵机组;温差为30℃时,大力矩气泵机组制冷量为14.8 kW,小力矩气泵机组的制冷量为9.2 kW。
The booster-driven hybrid cooling unit using ambient energy for free cooling can work for a whole year as one unit and reduce the annual cooling energy consumption effectively in data centers.Two different type booster and its hybrid cooling units were developed and tested.The suction/discharge pressure and mass flow rate of two different boosters were studied under the annual temperature difference range.The performance and differences of two hybrid cooling units were analyzed.The results indicate that the suction/discharge pressure ratio of the large torque booster(No.1)is less than that of the small torque booster(No.2).In the test temperature difference range,the suction/discharge pressure ratio of No.1 booster decreases by 53.56%,which of No.2 booster decreases by 32.89%.The cooling capacity and energy efficiency ratio of No.1 booster-driven hybrid cooling unit(14.8 kW)is higher than that of No.2 booster unit(9.2 kW)at the same temperature difference(30℃).
作者
周峰
徐步青
薛连政
马国远
晏祥慧
ZHOU Feng;XU Buqing;XUE Lianzheng;MA Guoyuan;YAN Xianghui(Department of Refrigeration and Cryogenic Engineering,Beijing University of Technology,Beijing 100124,China)
出处
《西安工程大学学报》
CAS
2023年第5期32-38,共7页
Journal of Xi’an Polytechnic University
基金
北京市教委科技计划一般项目(KM201910005017)
北京工业大学“城市碳中和”科技创新基金(049000514122607)
北京工业大学环境与生命学部培育基金(PY202105)。
关键词
数据中心
气泵
自然冷却
复合机组
压比
data center
booster
free cooling
hybrid unit
pressure ratio
