Abstract
In this work, we treat theoretically the conjugate film condensation process on a vertical fin immersed in a saturated vapor, taking into account that the viscosity of the condensed film is a well-defined function of the temperature. In order to predict the thickness of the film, the momentum and energy balance equations for the condensed and energy equation for the vertical fin are reduced to a non-linear system of two ordinary differential equations. These governing equations contain four nondimensional parameters: the Jakob number, Ja, a conjugate heat transfer parameter, α, the aspect ratio of the fin, ϵ, and β that takes into account the effect of the variable viscosity. Using the limit Ja <<1 and the boundary layer approximation for the film-condensation process, the nondimensional heat transfer and the overall mass flow rates of the condensed fluid have been obtained as functions of the involved nondimensional parameters.
Original language | English |
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State | Published - 2006 |
Externally published | Yes |
Event | 22nd Interamerican Congress of Chemical Engineering, CIIQ 2006 and 5th Argentinian Congress of Chemical Engineering, CAIQ 2006 - Buenos Aires, Argentina Duration: 1 Oct 2006 → 4 Oct 2006 |
Conference
Conference | 22nd Interamerican Congress of Chemical Engineering, CIIQ 2006 and 5th Argentinian Congress of Chemical Engineering, CAIQ 2006 |
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Country/Territory | Argentina |
City | Buenos Aires |
Period | 1/10/06 → 4/10/06 |
Keywords
- Conjugate heat transfer and film condensation
- Fin
- Variable viscosity