Heat transfer during film condensation of potassium vapor on a horizontal plate
Author(s)
Meyrial, Paul M.; Morin, Michel L.
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Other Contributors
Massachusetts Institute of Technology. Dept. of Mechanical Engineering.
Massachusetts Institute of Technology. Division of Sponsored Research.
Massachusetts Institute of Technology. Heat Transfer Laboratory.
Metadata
Show full item recordAbstract
The object of the investigation is to analyze the following two features of heat transfer during condensation of potassium vapor: a. Heat transfer during film condensation of a pure saturated potassium vapor on a horizontal surface. b. Heat transfer during film condensation of potassium vapor in the presence of a small quantity of non-condensable gas. Until now, the discrepancy between theory and experiment concerning the condesnation of pure liquid-metal vapors has been explained by a thermal resistance at the liquid-vapor interface. This interfacial resistance was analyzed by means of the kinetic theory, and the results depended on the use of a condensation (or accommodation) coefficient. This coefficient was found to decrease in value at higher pressures. This work presents a more refined analysis of the interfacial temperature distribution, including the effect of subcooling in the vapor in the region of the liquid-vapor interface. Furthermore, a theory predicting the temperature drop in the condensate film on a horizontal plate is presented. Experiments were performed to verify the theory. In addition, data from previous investigators were analyzed. Experiments with non-condensable gases in the saturated vapor were made using the horizontal plate facing upward. These results supported Kroger's (19) theory.
Date issued
1968Publisher
Cambridge, Mass. : M.I.T. Engineering Projects Laboratory, [1968]
Other identifiers
14089991
Series/Report no.
Technical report (Massachusetts Institute of Technology, Heat Transfer Laboratory) ; no. 52.
Keywords
Condensation., Heat -- Transmission., Potassium., Liquid metals -- Thermal properties.