An Empirical Modification of Nucleation Theory and Its Application to Boiling Heat Transfer Page: 10 of 38
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Recent technological advances have focused ever increasing atten-
tion on the boiling phenomenon as a means of increasing the magnitude of
the heat transfer per unit area. A great deal of experimental work has
been done and a number of correlations for the heat transfer rate have
been proposed in the light of the experimental results. Most of this work,
however, has been with boiling of liquids under a pressure of one atmos-
phere and the circulation is usually natural.
The results for heat transfer rate from an electrically heated wire
submerged in a pool of saturated liquid indicate the existence of four
regimes,(1) as shown schematically in Fig. 1. At very low superheat the
small number of bubbles has only a minor influence on heat transfer, and
the heat transfer can be determined by the natural convection set up by
Forced Convection Boling
J ~ feeble
1 i HF"'-AEIIEEII
Film Film Boilng
I~~~ ~~ Bo-4--.----i-i
Simple Convection Nucleate
B ~ ~-
SUPERHEAT es, OF
Forced Convection Boiling
from Rough Surfaces
Fig. 1. Typical Boiling Curve
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Chang, Y. P. An Empirical Modification of Nucleation Theory and Its Application to Boiling Heat Transfer, report, February 1, 1961; United States. (https://digital.library.unt.edu/ark:/67531/metadc863296/m1/10/: accessed May 26, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.