Full Content is available to subscribers

Subscribe/Learn More  >

Reduced Rack Exhaust Temperature Gradient via Variable Chassis Flow Rate

[+] Author Affiliations
Thong Dang, Carine Serreli, H. Ezzat Khalifa

Syracuse University, Syracuse, NY

Roger R. Schmidt, Madhusudan Iyengar

IBM Corporation, Poughkeepsie, NY

Paper No. IPACK2011-52067, pp. 451-459; 9 pages
  • ASME 2011 Pacific Rim Technical Conference and Exhibition on Packaging and Integration of Electronic and Photonic Systems
  • ASME 2011 Pacific Rim Technical Conference and Exhibition on Packaging and Integration of Electronic and Photonic Systems, MEMS and NEMS: Volume 2
  • Portland, Oregon, USA, July 6–8, 2011
  • ISBN: 978-0-7918-4462-5
  • Copyright © 2011 by ASME


An effective method of reducing the temperature gradient in data centers (or “hot” and “cold” spots) is to minimize the maximum temperature at the rack exit plane. For a given rack’s heat load, one way to achieve this is to vary the chassis flow rate in such a way that the rack exit temperature gradient is small. In this paper, a simple algorithm based on the energy equation is developed to set the chassis flow rate such that the exit rack temperature is uniform. When compared to a constant chassis flow rate algorithm, the proposed method is demonstrated through CFD simulations to achieve significant reduction in maximum chassis inlet temperature for the same CRAH flow rate.

Copyright © 2011 by ASME



Interactive Graphics


Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature

Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal

Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In