Experimental Study and Energy-Saving Analysis on Cooling Effect with Large Temperature Difference and High Temperature of Chilled Water System in Data Center

  • Zhibo Kang
  • Zhenhua ShaoEmail author
  • Lin Su
  • Kaijun DongEmail author
  • Hongxian Liu
Conference paper
Part of the Environmental Science and Engineering book series (ESE)


From the perspective of the precision air-conditioning operating condition, the effects of different load powers, different water temperatures of supply-and-return and temperature difference on energy consumption of precision air-conditioning and COP of water chiller were debated in this paper. The experimental results show that when the cooling mode of large temperature difference and high temperature is adopted, a higher water supply temperature and a higher efficiency of the water chiller are obtained. Moreover, the return water temperature is also increased, and the utilization rate of natural cold source can be improved. In order to reduce the energy consumption of the water chiller and increase the COP of the water chiller, natural cold source with gradient utilization can be used, which increased the utilization time of natural cold source. In a word, not only the energy consumption of precision air-conditioning water system but the chiller can be reduced by means of large temperature difference and high temperature.


Data center Large temperature difference Cooling effect 



This work is supported by Science and Technology Planning Project of Guangdong Province, China (No.2017B090907027), Science and Technology Planning Project of Guangzhou, China201705YH091.


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© Springer Nature Singapore Pte Ltd. 2020

Authors and Affiliations

  1. 1.Guangzhou Institute of Energy Conversion, Chinese Academy of SciencesGuangzhouChina
  2. 2.Northeast Electric Power UniversityJilinChina
  3. 3.CAS Key Laboratory of Renewable EnergyGuangzhouChina
  4. 4.Guangdong Provincial Key Laboratory of New and Renewable Energy Research and DevelopmentGuangzhouChina

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