Second law analysis of small data centre airspace

Babak Fakhim, Faraz Rind Baloch, Masud Behnia, Steven Armfield

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


The energy required for data centre cooling is a key fraction of total energy consumption in data centres. From a Second Law analysis point of view, the mixing of hot and cold streams in the room airspace caused by hot air recirculation is an irreversible process leading to wasted work potential in data centres. Therefore, a Second Law assessment allows one to quantify the irreversibilities leading to inefficiencies in data centre airspace. In this paper, numerical analyses of flow and temperature fields are conducted in order to evaluate the thermal performance of the data centre. Subsequently, from flow patterns and temperature profiles, First Law and Second Law of thermodynamic analysis of air cooled raised-floor data centres have been performed to reach a better thermal manageability, which will lead to more cost-effective optimum designs. The effectiveness of the exergy-based metric has been studied by analysing the impact of CRAC flow rates. It is shown that using both First Law and Second Law based metrics can be effective tool in evaluating the data centre performance.

Original languageEnglish
Title of host publicationProceedings of the 19th Australasian Fluid Mechanics Conference
Place of PublicationMelbourne, Australia
PublisherAustralasian Fluid Mechanics Society
Number of pages4
ISBN (Electronic)9780646596952
Publication statusPublished - 2014
Externally publishedYes
Event19th Australasian Fluid Mechanics Conference, AFMC 2014 - Melbourne, Australia
Duration: 8 Dec 201411 Dec 2014


Other19th Australasian Fluid Mechanics Conference, AFMC 2014


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