Painting technique to enhance pool boiling heat transfer in saturated FC-72

A benign method of generating a surface microstructure that provides pool boiling heat transfer enhancement is introduced. Pool boiling heat transfer results from an enhanced, horizontally oriented, rectangular surface immersed in saturated FC-72, indicate up to an 85 percent decrease in incipient superheat, a 70 to 80 percent reduction in nucleate boiling superheats, and a ∼109 percent increase in the critical heat flux ( CHF = 30 W/cm 2 ), beyond that of the nonpainted reference surface. For higher heat flux conditions (19 to 30 W/cm 2 ), localized dryout results in increased wall superheats (8 to 48°C). The enhanced surface heat transfer coefficients are four times higher than those from the reference surface and similar to those from the Union Carbide High Flux surface. Photographs that identify differences in bubble size and departure characteristics between the painted and reference surfaces are presented.

[1]  S. M. You,et al.  A technique for enhancing boiling heat transfer with application to cooling of electronic equipment , 1992, [1992 Proceedings] Intersociety Conference on Thermal Phenomena in Electronic Systems.

[2]  I. Mudawar,et al.  Microelectronic Cooling by Enhanced Pool Boiling of a Dielectric Fluorocarbon Liquid , 1989 .

[3]  Terrence W. Simon,et al.  wall Superheat Excursions in the Boiling incipience of Dielectric Fluids , 1988 .

[4]  R.H.S. Winterton,et al.  Surface effects in pool boiling , 1985 .

[5]  N. Afgan,et al.  Boiling heat transfer from surfaces with porous layers , 1985 .

[6]  Y. Katto,et al.  A new hydrodynamic model of critical heat flux, applicable widely to both pool and forced convection boiling on submerged bodies in saturated liquids , 1983 .

[7]  P. J. Marto,et al.  Pool Boiling Heat Transfer From Enhanced Surfaces to Dielectric Fluids , 1982 .

[8]  R. Gaertner.  Photographic Study of Nucleate Pool Boiling on a Horizontal Surface , 1965 .

[9]  Y. Hsu.  On the Size Range of Active Nucleation Cavities on a Heating Surface , 1962 .

[10]  N. Zuber.  Hydrodynamic aspects of boiling heat transfer (thesis) , 1959 .

[11]  S. M. You,et al.  EXPERIMENTS ON BOILING INCIPIENCE WITH A HIGHLY-WETTING DIELECTRIC FLUID; EFFECTS OF PRESSURE, SUBCOOLING AND DISSOLVED GAS CONTENT , 1990 .

[12]  Terrence W. Simon,et al.  Experimental investigation of nucleate boiling incipience with a highly-wetting dielectric fluid (R-113) , 1990 .

[13]  A. Bergles,et al.  THE INFLUENCE OF SUBCOOLING ON THE POOL NUCLEATE BOILING AND CRITICAL HEAT FLUX OF SIMULATED ELECTRONIC CHIPS , 1990 .

[14]  Arthur E. Bergles,et al.  Boiling Heat Transfer Characteristics of Simulated Microelectronic Chips with Detachable Heat Sinks , 1986 .

[15]  S. J. Kline,et al.  Describing Uncertainties in Single-Sample Experiments , 1953 .