Experimental study on free cooling performance of an integrated cooling system based on loop thermosyphon for data centers

Jing Wang, Xiaoling Cao, Yanping Yuan, Nanyang Yu, Xu Zhou, Jinwei Li and Lang Wu

Energy, 2025, vol. 322, issue C

Abstract: This study designed an integrated cooling system based on loop thermosyphon for data centers. The system not only combined free cooling and mechanical refrigeration but also combined air-side and water-side cooling. The system increased the use time of natural cooling sources and improved the performance of the cooling system. A free cooling experiment of the system was carried out. The results showed that as the temperature of cold sources decreased, the cooling capacity of both air-cooled mode and water-cooled mode increased, while the total cooling capacity of both the series and parallel operation modes rose at first and then fell. The cooling capacity of the water-cooled condenser was also gradually decreasing in both the series and parallel operation modes; the proportion decreased from 87.95 % to 86.01 % to −6.36 % and 5.62 %, respectively. Neither of the two condensers can exert their maximum cooling capacity when used together. The cooling capacity of the water-cooled condenser was negative in the series operation mode in the severe cold season. Judging from the evaporator outlet air temperature, it may be necessary to turn on mechanical refrigeration when the outdoor air temperature exceeds 30 °C and the cold water temperature exceeds 25 °C.

Keywords: Data center; Loop thermosyphon; Heat pipe; Integrated system; Free cooling (search for similar items in EconPapers)
Date: 2025
References: Add references at CitEc
Citations:

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0360544225013489
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:322:y:2025:i:c:s0360544225013489

DOI: 10.1016/j.energy.2025.135706

Access Statistics for this article

Energy is currently edited by Henrik Lund and Mark J. Kaiser

More articles in Energy from Elsevier
Bibliographic data for series maintained by Catherine Liu ().