图书馆订购 Guest

ISSN Online: 2377-424X

ISBN Print: 0-89116-909-1

International Heat Transfer Conference 9
August, 19-24, 1990 , Jerusalem, Israel

A NUMERICAL STUDY OF HEAT AND MASS TRANSFER IN INTEGRAL-FIN-EXTRUDED-TUBE ABSORBERS

Get access (open in a dialog) DOI: 10.1615/IHTC9.1070
pages 61-66

摘要

A mathematical model for coupled heat and mass transfer in turbulent film absorption over a plate which forms the tangential fin of a coolant duct is formulated taking into account the turbulent diffusivity in the film in all the three directions, with three-dimensional conduction in the plate and the heat transfer to the coolant flowing counter-current to the film. The governing equations are solved using finite difference methods and the results are presented for various values of dimensionless parameters, in the form of plots of dimensionless temperature, dimensionless mass fraction, Sherwood and Nusselt numbers versus the dimensionless stream wise distance. The film Reynolds number is varied from 2500 to 10000, the dimensionless heat of absorption from 0.01 to 0.1, the Reynolds number of the coolant from 1000 to 3000. The results of the present study indicate that the absorber length required is substantially reduced compared to models which take into account the turbulent diffusion only across the film thickness.