An experimental investigation of heat transfer from a small heated patch to a subcooled, fully developed turbulent flow is conducted. The test patch, approximately 0.25 mm long and 2.0 mm wide, is located on the floor of a small rectangular channel through which a coolant (R-113 or FC-72) is circulated. A thin film of Nichrome deposited on a quartz substrate serves as an integrated heater element and resistance thermometer. The maximum achievable heat flux with R-113, limited by the thermal decomposition temperature of the fluid, is 2.04 MW/m2 at a bulk velocity of 1.8 m/s and a high wall superheat of 80° C. The results obtained with FC-72 show large temperature excursions at the onset of nucleate boiling and a boiling hysteresis near the onset of nucleate boiling. These effects decrease with increasing velocity and/or subcooling. The heat flux at departure from nucleate boiling increases with increasing velocity and/or subcooling. A maximum heat flux of 4.26 MW/m2 at departure from nucleate boiling is observed.
Skip Nav Destination
Article navigation
Research Papers
Heat Transfer From a Small Heated Region to R-113 and FC-72
K. R. Samant,
K. R. Samant
E. I. du Pont de Nemours and Co., Inc., Seaford, DE 19973
Search for other works by this author on:
T. W. Simon
T. W. Simon
Mechanical Engineering Department, University of Minnesota, Minneapolis, MN 55455
Search for other works by this author on:
K. R. Samant
E. I. du Pont de Nemours and Co., Inc., Seaford, DE 19973
T. W. Simon
Mechanical Engineering Department, University of Minnesota, Minneapolis, MN 55455
J. Heat Transfer. Nov 1989, 111(4): 1053-1059 (7 pages)
Published Online: November 1, 1989
Article history
Received:
March 20, 1987
Online:
October 20, 2009
Citation
Samant, K. R., and Simon, T. W. (November 1, 1989). "Heat Transfer From a Small Heated Region to R-113 and FC-72." ASME. J. Heat Transfer. November 1989; 111(4): 1053–1059. https://doi.org/10.1115/1.3250767
Download citation file:
Get Email Alerts
Cited By
Related Articles
Low-Velocity Subcooled Nucleate Flow Boiling at Various Orientations
J. Heat Transfer (May,1995)
Impinging Jet Boiling of a Fluorinert Liquid on a Foil Heater Array
J. Electron. Packag (June,2000)
On the Mechanism of Forced-Convection Subcooled Nucleate Boiling
J. Heat Transfer (February,1990)
Liquid Immersion Cooling of a Longitudinal Array of Discrete Heat Sources in Protruding Substrates: II—Forced Convection Boiling
J. Electron. Packag (March,1992)
Related Chapters
Forced Convection Subcooled Boiling
Two-Phase Heat Transfer
Heat Transfer Enhancement by Using Nanofluids in Laminar Forced Convection Flows Considering Variable Properties
Proceedings of the 2010 International Conference on Mechanical, Industrial, and Manufacturing Technologies (MIMT 2010)
Blowin' in the Wind
Hot Air Rises and Heat Sinks: Everything You Know about Cooling Electronics Is Wrong