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Effects of Liquid Heat Dissipation on Heat Transfer Coefficient in Spray Cooling

[+] Author Affiliations
Shu-Ye Lei, Qiu-Min Lu

Tsinghua University

Paper No. IMECE2005-79823, pp. 227-231; 5 pages
doi:10.1115/IMECE2005-79823
From:
  • ASME 2005 International Mechanical Engineering Congress and Exposition
  • Heat Transfer, Part B
  • Orlando, Florida, USA, November 5 – 11, 2005
  • Conference Sponsors: Heat Transfer Division
  • ISBN: 0-7918-4222-3 | eISBN: 0-7918-3769-6
  • Copyright © 2005 by ASME

abstract

The effects of the heat flux and liquid temperatures during spray cooling heat transfer were experimentally studied for non-boiling water spray cooling. The experiments show that the heat flux strongly affects the heat transfer coefficient, especially for high temperature sprays or low heat fluxes. A key effect is the heat dissipation from the liquid to the environment. The heat dissipation increases with the spray inlet temperature or the heat flux. To explain the strong dependence of the heat transfer on the heat dissipation in single phase, a spray cooling heat transfer model was suggested which includes the heat dissipation. Experimental measurements of the radial spray droplet temperature profile showed the complex nature of the heat dissipation.

Copyright © 2005 by ASME

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