A unique method to determine the vapor volumetric flow rate above a heated wire utilizing a single photograph and laser-Doppler anemometry is developed and discussed. The volumetric flow rate is combined with additional analyses to determine the overall contributions to the total heat flux from four nucleate boiling heat transfer mechanisms (latent heat, natural convection, Marangoni flow, and microconvection). This method is applied to a 75-μm wire immersed in a saturated, highly wetting liquid (FC-72). Latent heat is identified as the dominant mechanism in the fully developed nucleate boiling regime.
Issue Section:
Boiling and Condensation
1.
Barthau
G.
1992
, “Active Nucleation Site Density and Pool Boiling Heat Transfer—An Experimental Study
,” International Journal of Heat and Mass Transfer
, Vol. 35
, pp. 271
–278
.2.
Carslaw, H. S., and Jaeger, J. C., 1986, Conduction of Heat in Solids, 2nd ed., Clarendon Press, Oxford, pp. 335–339.
3.
Han
C. Y.
Griffith
P.
1965
, “The Mechanism of Heat Transfer in Nucleate Pool Boiling—Part I
,” International Journal of Heat and Mass Transfer
, Vol. 8
, pp. 887
–904
.4.
Jabardo, J. M. S., 1981, Ph.D. Thesis, University of Illinois at Urbana–Champaign.
5.
Kuehn
T. H.
Goldstein
R. J.
1976
, “Correlating Equations for Natural Convection Heat Transfer Between Horizontal Circular Cylinders
,” International Journal of Heat and Mass Transfer
, Vol. 19
, pp. 1127
–1134
.6.
McFadden
P. W.
Grassmann
P.
1962
, “The Relation Between Bubble Frequency and Diameter During Nucleate Pool Boiling
,” International Journal of Heat and Mass Transfer
, Vol. 5
, pp. 169
–173
.7.
O’Connor, J. P., You, S. M., Hong, Y. S., and Haji-Sheikh, A., 1993, “Bubble Size, Velocity, and Frequency From a Wire Boiling in Saturated R-113,” presented at the ASME 1993 Winter Annual Meeting, New Orleans, LA.
8.
O’Connor, J. P., 1994, “Enhancement of Pool Boiling Heat Transfer in Highly Wetting Dielectric Liquids,” Ph.D. Thesis, University of Texas at Arlington, Arlington, TX.
9.
Paul
D. D.
Abdel-Khalik
S. I.
1983
, “A Statistical Analysis of Saturated Nucleate Boiling Along a Heated Wire
,” International Journal of Heat and Mass Transfer
, Vol. 26
, pp. 509
–519
.10.
Rallis
C. J.
Jawurek
H. H.
1964
, “Latent Heat Transport in Saturated Nucleate Boiling
,” International Journal of Heat and Mass Transfer
, Vol. 7
, pp. 1051
–1068
.11.
Tong, W., Bar-Cohen, A., and Simon, T. W., 1990, “Thermal Transport Mechanisms in Nucleate Pool Boiling of Highly-Wetting Liquids,” presented at the 1990 International Heat Transfer Conference, Paper No. 1-BO-05.
12.
You
S. M.
Hong
Y. S.
O’Connor
J. P.
1994
, “The Onset of Film Boiling on Small Cylinders; Local Dryout and Hydrodynamic Critical Heat Flux Mechanisms
,” International Journal of Heat and Mass Transfer
, Vol. 37
, No. 16
, pp. 2561
–2569
.
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