Effect of variable viscosity on the laminar film condensation

Research output: Contribution to conferencePaper

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.

Conference

ConferenceXXII Interamerican Congress of Chemical Engineering, CIIQ 2006 and V Argentinian Congress of Chemical Engineering, CAIQ 2006 - Innovation and Management for Sustainable Development
Period1/01/06 → …

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film condensation
fins
viscosity
heat transfer
mass flow rate
nonlinear systems
aspect ratio
boundary layers
differential equations
vapors
momentum
energy
fluids
approximation
temperature

Cite this

Arcos, J. C., Bautista, O., & Méndez, F. (2006). Effect of variable viscosity on the laminar film condensation. Paper presented at XXII Interamerican Congress of Chemical Engineering, CIIQ 2006 and V Argentinian Congress of Chemical Engineering, CAIQ 2006 - Innovation and Management for Sustainable Development, .
Arcos, J. C. ; Bautista, O. ; Méndez, F. / Effect of variable viscosity on the laminar film condensation. Paper presented at XXII Interamerican Congress of Chemical Engineering, CIIQ 2006 and V Argentinian Congress of Chemical Engineering, CAIQ 2006 - Innovation and Management for Sustainable Development, .
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title = "Effect of variable viscosity on the laminar film condensation",
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.",
author = "Arcos, {J. C.} and O. Bautista and F. M{\'e}ndez",
year = "2006",
month = "1",
day = "1",
language = "American English",
note = "XXII Interamerican Congress of Chemical Engineering, CIIQ 2006 and V Argentinian Congress of Chemical Engineering, CAIQ 2006 - Innovation and Management for Sustainable Development ; Conference date: 01-01-2006",

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Arcos, JC, Bautista, O & Méndez, F 2006, 'Effect of variable viscosity on the laminar film condensation', Paper presented at XXII Interamerican Congress of Chemical Engineering, CIIQ 2006 and V Argentinian Congress of Chemical Engineering, CAIQ 2006 - Innovation and Management for Sustainable Development, 1/01/06.

Effect of variable viscosity on the laminar film condensation. / Arcos, J. C.; Bautista, O.; Méndez, F.

2006. Paper presented at XXII Interamerican Congress of Chemical Engineering, CIIQ 2006 and V Argentinian Congress of Chemical Engineering, CAIQ 2006 - Innovation and Management for Sustainable Development, .

Research output: Contribution to conferencePaper

TY - CONF

T1 - Effect of variable viscosity on the laminar film condensation

AU - Arcos, J. C.

AU - Bautista, O.

AU - Méndez, F.

PY - 2006/1/1

Y1 - 2006/1/1

N2 - 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.

AB - 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.

M3 - Paper

ER -

Arcos JC, Bautista O, Méndez F. Effect of variable viscosity on the laminar film condensation. 2006. Paper presented at XXII Interamerican Congress of Chemical Engineering, CIIQ 2006 and V Argentinian Congress of Chemical Engineering, CAIQ 2006 - Innovation and Management for Sustainable Development, .