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Spray Cooling of an Inverted Heated Surface

[+] Author Affiliations
Frank Pyrtle, III, Alberto D. Sato

University of South Florida

Paper No. IMECE2006-14874, pp. 343-348; 6 pages
  • ASME 2006 International Mechanical Engineering Congress and Exposition
  • Heat Transfer, Volume 2
  • Chicago, Illinois, USA, November 5 – 10, 2006
  • Conference Sponsors: Heat Transfer Division
  • ISBN: 0-7918-4785-3 | eISBN: 0-7918-3790-4
  • Copyright © 2006 by ASME


Experiments were performed to determine heat transfer characteristics of water sprays impacting a flat, inverted surface. Using a compressed gas tank to provide motive force in an open loop spray cooling system, droplet sprays were produced without the assistance of an atomizing gas stream. A range of droplet volumetric fluxes was produced for cooling the inverted heated surface using a full-cone spray nozzle. Heat transfer curves were plotted in the form of heat flux as a function of wall temperature difference, for volumetric flow rates up to 627 mL/min, dissipating up to 451 W/cm2 . Heat transfer coefficients were also determined as functions of heat flux. The results were compared to prior data for standard, downward spraying onto heated surfaces.

Copyright © 2006 by ASME
Topics: Cooling , Sprays



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