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Thermodynamic Analysis of Hybrid Liquid-Air-Based Data Center Cooling Strategies

[+] Author Affiliations
A. Bhalerao, A. Ortega, A. P. Wemhoff

Villanova University, Villanova, PA

Paper No. IMECE2014-38359, pp. V08BT10A080; 7 pages
doi:10.1115/IMECE2014-38359
From:
  • ASME 2014 International Mechanical Engineering Congress and Exposition
  • Volume 8B: Heat Transfer and Thermal Engineering
  • Montreal, Quebec, Canada, November 14–20, 2014
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-4956-9
  • Copyright © 2014 by ASME

abstract

Energy savings in data center cooling systems equate to cost savings for the data center operator. Recently, investigators have considered alternative hybrid liquid-air technologies for data center thermal management such as in-row coolers, rear door heat exchangers, and overhead coolers. This study employs the in-house data center modeling tool Villanova Thermodynamic Analysis of Systems (VTAS) software package to ascertain the influence of hybrid liquid-air components on overall data center exergy destruction. The results show that the exergy destruction decreases for a hybrid liquid-air system using only an in-row cooler. As the in-row cooler removes a greater fraction of heat from the hot aisle, the total exergy destruction in the data center increases by a small amount. This analysis is extended for various configurations containing an in-row cooler, an overhead cooler, a rear door heat exchanger, and a CRAH unit to show that using hybrid liquid-air technologies without a CRAH unit is the most thermodynamically favorable.

Copyright © 2014 by ASME
Topics: Cooling , Data centers

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