Test Analysis of Indirect Evaporative Cooling Air Conditioning Unit for Data Center

Shijie Tang ； Xuelin Zheng

《International Core Journal of Engineering》 7卷7期 (2021/07) Pp. 312-319

https://doi.org/10.6919/ICJE.202107_7(7).0048

摘要

This paper proposes a kind of indirect evaporative cooling air conditioning unit for data center, which adopts evaporative refrigeration technology, makes full use of the natural cooling source and dry air energy of the external environment, and greatly reduces the energy consumption of the air conditioning system. It describes the structure of the unit, three modes of operation and its principles. Shijiazhuang City, which is located in a cold and medium humidity area, was used as the test area to conduct related experiments on the prototype. The results showed that: in the dry working mode, when the outdoor air dry bulb temperature is -7.8℃, the unit energy efficiency ratio can reach 11.96. As the temperature rises, the energy efficiency ratio gradually decreases. When the temperature rises to 17.5℃, the energy efficiency ratio of the unit is 8.02; In the wet working mode, when the outdoor air dry bulb temperature is 20℃, the inlet wind speed is 2m/s, and the spray volume is 3m^3/h, the unit's direct evaporative cooling efficiency is 1.18.With the increase of the outdoor air dry bulb temperature, the inlet wind speed and the decrease of the spray volume, the direct evaporative cooling efficiency gradually decreases.

關鍵字

Date Center ； Indirect Evaporative Cooling Air Conditioning Unit ； Energy Efficiency Ratio ； Direct Evaporative Cooling Efficiency

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