A model of combined mass and heat transfer during nonisothermal gas absorption from a slug rising in a channel filled with liquid is suggested. The expressions for coefficients of heat and mass transfer from a single slug are derived in the approximation of the thin concentration and heat boundary layers in a liquid phase. Under the assumptions of a perfect mixing of the dissolved gas in liquid plugs and uniform temperature distribution in liquid plugs, recurrent relations for the dissolved gas concentration and temperature in the n-th liquid plug and mass and heat fluxes from the n-th gas slug are derived. The total mass and heat fluxes in a gas-liquid slug flow are determined. In the limiting case of absorption without heat release the derived formulas recover the expressions for isothermal absorption in a gas-liquid slug flow.
|Number of pages||10|
|Journal||International Communications in Heat and Mass Transfer|
|State||Published - 1 Jan 1995|
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
- Chemical Engineering (all)
- Condensed Matter Physics