THERMAL SCIENCE

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Mohamed El-Sayed Mosaad

HEAT TRANSFER PERFORMANCE OF FILM CONDENSATION CREATED BY FORCED FLOW

ABSTRACT
In this work, condensate film on a vertical wall cooled on the external side by forced flow is analysed as a conjugate heat transfer problem. The treated case is that the condensate film and forced flow boundary-layer are in a parallel-flow arrangement. The mass, momentum and energy boundary-layer equations of the condensate film and forced flow are set in a dimensionless form to generalize the model. The parameters affecting the thermal communication between the condensate film and the forced flow are defined from the analysis. These parameters explain the relative impact of the three involved thermal resistances of solid wall, forced convection and film condensation on the local and mean Nusselt number. The study shows that the Nusselt number predicted by the present conjugate model is different from that predicted by a Nusselt-type model.
KEYWORDS
film condensation, forced convection, conjugate heat transfer
PAPER SUBMITTED: 2017-12-18
PAPER REVISED: 2018-03-30
PAPER ACCEPTED: 2018-03-31
PUBLISHED ONLINE: 2018-04-28
DOI REFERENCE: https://doi.org/10.2298/TSCI171218134M
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2019, VOLUME 23, ISSUE Issue 3, PAGES [2001 - 2011]
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Heat transfer performance of film condensation created by forced flow

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