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Performance Study of Booster-Driven Hybrid Cooling Units for Free Cooling in Data Centers

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  • Rong Zhuang

    (State Key Laboratory of Air-Conditioning Equipment and System Energy Conservation, Zhuhai 519070, China
    Gree Electric Appliances, Inc. of Zhuhai, Zhuhai 519000, China)

  • Feng Zhou

    (Department of Refrigeration and Cryogenics Engineering, Beijing University of Technology, Beijing 100124, China)

  • Xuwen Tian

    (Department of Refrigeration and Cryogenics Engineering, Beijing University of Technology, Beijing 100124, China)

  • Buqing Xu

    (Department of Refrigeration and Cryogenics Engineering, Beijing University of Technology, Beijing 100124, China)

  • Shaocong Li

    (Department of Refrigeration and Cryogenics Engineering, Beijing University of Technology, Beijing 100124, China)

  • Guoyuan Ma

    (Department of Refrigeration and Cryogenics Engineering, Beijing University of Technology, Beijing 100124, China)

Abstract

In the data center, using ambient energy cooling technology can effectively reduce the average power use efficiency, and the heat pipe as an effective use of ambient energy device has attracted much attention. For the dynamic heat pipe, reducing the power consumption of the pump effectively is the key to improving the efficiency. In this paper, the rotary booster is selected as the gas phase booster device of the heat pipe unit, the standard unit of the rotary booster is improved, and three types of boosters are obtained, including two improved boosters and one standard unit. Comparative test studies are conducted on three different types of boosters, and the power of the booster shows a downward trend with the increase in indoor and outdoor temperature differences (outdoor temperature decreases). With the increase in indoor and outdoor temperature differences, the cooling capacity increases first and then decreases. When the indoor and outdoor temperature difference is greater than 20 °C, the suction pressure of the booster is greater than the saturated condensing pressure force under outdoor ambient temperature, and the work of the booster decreases. Among the three types of boosters, the medium pressure ratio booster energy efficiency ratio (EER) is the largest. After throttling the standard unit, results show that its cooling capacity unit increases, but the booster power also increases, and the EER is still smaller than that of the improved unit.

Suggested Citation

  • Rong Zhuang & Feng Zhou & Xuwen Tian & Buqing Xu & Shaocong Li & Guoyuan Ma, 2023. "Performance Study of Booster-Driven Hybrid Cooling Units for Free Cooling in Data Centers," Sustainability, MDPI, vol. 15(19), pages 1-19, October.
    • Handle: RePEc:gam:jsusta:v:15:y:2023:i:19:p:14558-:d:1255168
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    References listed on IDEAS

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