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Natural convection heat transfer enhancement through latent heat transport in vertical parallel plate channel flows
Author(s) -
Yan W. M.,
Lin T. F.
Publication year - 1990
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.5450680302
Subject(s) - nusselt number , heat transfer , thermodynamics , latent heat , natural convection , convective heat transfer , mechanics , heat transfer enhancement , vaporization , evaporation , materials science , heat transfer coefficient , physics , reynolds number , turbulence
A numerical analysis is carried out to investigate the effects of latent heat transfer, in connection with the vaporization of a liquid film, on natural convection heat transfer in a vertical parallel plate channel. Major nondimensional groups identified are Gr T , Gr M , Pr and Sc. Results for Nusselt and Sherwood numbers are specifically presented for the air‐water and air‐ethanol systems under various heating conditions to illustrate the heat transfer enhancement through latent heat transfer during the evaporation processes. Considerable enhancement in heat transfer due to the exchange of latent heat was clearly demonstrated.