Numerical study of data center composite cooling system

Xuetao Zhou, Xiaolei Yuan, Jinxiang Liu*, Risto Kosonen, Xinjie Xu

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review


During recent years, the energy consumption of data centers (DCs) has doubled every four years, and DCs accounted for about 3% of the global electricity consumption in 2010. In order to reduce the specific energy consumption, methods for improving the thermal performance of data center have been proposed. In this paper, a composite cooling system combining a heat pipe technology and overhead floor return air technology was introduced. In this study, two novel concepts (i.e., no server upper heat pipe exchanger and server upper heat pipe exchanger) were developed and compared using the Airpak 3.0 software packages. Simulation results show that the new system proposed can effectively improve the thermal environment in high-density data center. Simultaneously, the energy consumption of air conditioning and operating cost of the data center can be significantly reduced. Racks had more uniform temperature distribution, and the number of rack hot spots has been significantly reduced.

Original languageEnglish
Title of host publicationProceedings of the 11th International Symposium on Heating, Ventilation and Air Conditioning, ISHVAC 2019 - Volume II
Subtitle of host publicationHeating, Ventilation, Air Conditioning and Refrigeration System
EditorsZhaojun Wang, Fang Wang, Peng Wang, Chao Shen, Jing Liu, Yingxin Zhu
Number of pages10
Publication statusE-pub ahead of print - 20 Mar 2020
MoE publication typeA4 Article in a conference publication
EventInternational Symposium on Heating, Ventilation and Air Conditioning - Harbin, China
Duration: 12 Jul 201915 Jul 2019
Conference number: 11

Publication series

NameEnvironmental Science and Engineering
ISSN (Print)1863-5520
ISSN (Electronic)1863-5539


ConferenceInternational Symposium on Heating, Ventilation and Air Conditioning
Abbreviated titleISHVAC


  • Composite cooling system
  • Data center
  • Energy conservation
  • Heat pipe
  • Local hot spots


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