NDLI: Effects of Noncondensable Gas and Subcooling on the Spray Cooling of an Isothermal Surface

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Horacek, Bohumil Kim, Jungho Kenneth, T. Kiger
Copyright Year	2003
Abstract	Spatially resolved heat transfer measurements have been made on a nominally isothermal surface that is spray cooled. The effects of dissolved gas and subcooling were studied. The local measurements were obtained using a microheater array with ninety-six heaters each about 700 microns in size. The heater array consisted of thin-film platinum resistors deposited on a quartz substrate. Electronic feedback circuits were used to keep each of the heaters at a constant temperature and the voltage required to do this was measured. The array was cooled with FC-72 using a spray nozzle from ISR. The heat transfer data was correlated with high-speed images of the flow structure obtained from below. In this paper, heat transfer mechanisms in spray cooling will be discussed, with a particular emphasis on the effects of a non-condensable gas on critical heat flux in comparison to the comparable effects of thermally subcooling the liquid prior to atomization.
Sponsorship	Heat Transfer Division
Starting Page	69
Ending Page	77
Page Count	9
File Format	PDF
ISBN	0791837181
DOI	10.1115/IMECE2003-41680
Volume Number	Heat Transfer, Volume 4
Conference Proceedings	ASME 2003 International Mechanical Engineering Congress and Exposition
Language	English
Publisher Date	2003-11-15
Publisher Place	Washington, DC, USA
Access Restriction	Subscribed
Subject Keyword	Resistors Temperature Cooling Circuits Sprays Critical heat flux Quartz Flow (dynamics) Thin films Subcooling Feedback Platinum Nozzles Heat transfer
Content Type	Text
Resource Type	Article

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Imece2003-41680 effects of noncondensable gas and subcooling on the spray cooling of an.

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