Journal
BUILDINGS
Volume 12, Issue 7, Pages -Publisher
MDPI
DOI: 10.3390/buildings12071015
Keywords
data centers; thermal environment; local hotspot; decentralized cooling system; heat pipe exchanger
Funding
- National Natural Science Foundation of China [51978481]
- ICT for Climate actions project from Academy of Finland [342123]
- Academy of Finland (AKA) [342123] Funding Source: Academy of Finland (AKA)
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This paper proposes a decentralized cooling system combined with heat pipe exchangers to optimize the thermal environment in a data center. The best cooling efficiency is achieved when the heat pipe exchangers are installed below each server.
This paper proposes a decentralized cooling system combined with a traditional computer room air conditioning unit and server-level heat pipe exchangers for thermal environment optimization in a data center. Two cooling strategies, with heat exchangers installed above and below the servers respectively, are proposed and compared with the original CRACs system in terms of thermal environment. The simulation results of the original data center model are in good agreement with the on-site measurement results, and thus its reliability can be validated. The results show that a decentralized cooling system can effectively improve the thermal environment in data centers. To obtain the highest cooling efficiency, altogether 18 cases, where heat pipe exchangers were installed at different locations and heights, are analyzed and compared. The results show that the thermal environment is optimal when heat pipe exchangers are installed 0.01 m below each server. The local hotspot temperature is reduced by 6.8 degrees C, and the temperature distribution of the rack is the most uniform, which can effectively reduce the heat accumulation in data centers.
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