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Direct contact heat transfer between two immiscible liquids during vaporization: Part II: Total evaporation time
Author(s) -
Prakash C. B.,
Pinder K. L.
Publication year - 1967
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450450406
Subject(s) - vaporization , evaporation , isopentane , chemistry , thermodynamics , cyclopentane , evaporative cooler , physics , organic chemistry , catalysis
A dilatometric technique was used to determine the total evaporation time of individual drops of furan, isopentane and cyclopentane as they rose in water. The values of total evaporation time were predicted reasonably well for each system by a different equation than was used to correlate the evaporative data for the initial 10% of the evaporative process as reported in Part I of this study. The total evaporation time data were also compared with the correlations given by Klipstein (1) , by Sideman and Taitel (2) and with the correlation which was found by the authors to best fit the total evaporative data for the three systems. In agreement with Klipstein (1) , the correlation for the overall heat transfer coefficient was found to be one of the form, q A = Cd 1 2.0 δ t . The rate of rise of an evaporating drop for the conditions used in this study was found to be nearly equal to the instantaneous terminal velocity.