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Coupled heat and mass transfer during nonisothermal absorption by falling droplet with internal circulation.
Author(s) : ELPERIN T., FOMINYKH A., ORENBAKH Z.
Type of article: Article, IJR article
Summary
We considered mass and heat transfer during nonisothermal absorption of a gas by a falling droplet with internal circulation. Gas phase is assumed to be free of inert admixtures and mass transfer is liquid phase controlled. Mass flux is directed from a gaseous phase to a droplet, and the interfacial shear stress causes a fluid flow inside the droplet. Droplet deformation under the influence of interface shear stress is neglected. Absorbate accumulation and temperature increase in the bulk of liquid phase are taken into account. The problem is solved in the approximations of a thin concentration and temperature boundary layers in the liquid phase. The thermodynamic parameters of the system are assumed constant. The system of transient partial parabolic differential equations of convective diffusion and energy balance with time-dependent boundary conditions is solved by combining the similarity transformation method with Duhamel's theorem, and the solution is obtained in a form of Volterra integral equation of the second kind which is solved numerically. Theoretical results are compared with available experimental data for water vapor absorption by falling droplets of aqueous solution of LiBr.
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Details
- Original title: Coupled heat and mass transfer during nonisothermal absorption by falling droplet with internal circulation.
- Record ID : 2007-0183
- Languages: English
- Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 30 - n. 2
- Publication date: 2007/03
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Indexing
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Themes:
Mass transfer;
Absorption and adsorption systems - Keywords: Gas; Mass transfer; Heat transfer; Absorption system; Absorption; Modelling; Droplet
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