Combined Heat and Mass Transfer in Regenerators with Hygroscopic Materials

[+] Author and Article Information
R. B. Holmberg

AB Svenska Fläktfabriken, Åsenvägen 7, S-551 84 Jönköping, Sweden

J. Heat Transfer 101(2), 205-210 (May 01, 1979) (6 pages) doi:10.1115/1.3450947 History: Received March 06, 1978; Online August 11, 2010


Simultaneous heat and mass transfer in periodic-flow heat and mass exchangers, or regenerators, with hygroscopic matrix materials has been analyzed. The coupled heat and mass transfer equations are derived for boundary-layer controlled heat and mass transfer and include longitudinal heat conduction in the matrix. A numerical method of the finite-difference type is applied to the steady-state performance. Results for a water vapor-air mixture show the influence of matrix heat and moisture capacities on temperature and humidity efficiencies. Distributions of air temperature, air humidity, matrix temperature and adsorbent moisture content are calculated in drying as well as recovery operations.

Copyright © 1979 by ASME
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