Operation characteristics of heat transportation system using CO 2

Jongsoo Jeong*, Kiyoshi Saito, Jongtaek Oh, Kwangil Choi

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review


Recently, information and communications technologies (ICT) have been widely used in the air-conditioning field, and high- performance and density ICT facilities have been rapidly growing. At the same time, the heat generated per unit area of a normal data center, where the servers and routers are concentrated, in an ICT facility is an extremely serious problem. Therefore, this study aims to investigate the performance and characteristics of the server spot cooling heat transportation system adopting CO2 as the working fluid to prevent the occurrence of hot spots and decrease the power consumed by a conventional overall air conditioning system installed at a data center with experiments and simulations. In the result, we determined the optimum CO 2 circulation rate that maximizes the rejected heat flow rate, and minimizes power consumption.

Original languageEnglish
Pages (from-to)1601-1606
Number of pages6
JournalEnergy Procedia
Publication statusPublished - 2012
Event2011 2nd International Conference on Advances in Energy Engineering, ICAEE 2011 - Bangkok, Thailand
Duration: 2011 Dec 272011 Dec 28


  • Data center
  • Forced circulation
  • Heat transportation system
  • Spot cooling

ASJC Scopus subject areas

  • Energy(all)


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