Obtaining a model for the determination of the average condensation heat transfer coefficient in ACC systems

Yanán Camaraza-Medina ,Oscar Miguel Cruz-Fonticiella ,Osvaldo Fidel García-Morales

doi:10.24294/tse.v3i1.1498

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Obtaining a model for the determination of the average condensation heat transfer coefficient in ACC systems

Yanán Camaraza-Medina

Oscar Miguel Cruz-Fonticiella

Osvaldo Fidel García-Morales

Thermal Science and Engineering 2020, 3(1), 39-46; https://doi.org/10.24294/tse.v3i1.1498

Submitted：12 Mar 2020

Accepted：10 May 2020

Published：29 May 2020

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Abstract

This work presents the results of the continuity of the research process carried out in the Energy Studies Center belonging to the Faculty of Technical Sciences of the University of Matanzas, which involves the establishment of a dimensionless model to determine the average condensation heat transfer coefficient of Air Coleed Condenser (ACC) systems in straight and inclined tubes. The research consists in obtaining in an analytical way the solution of the differential equation of the velocity profile, considering that condensation is of pellicular type, finally the empirical condition of Roshenow is combined with the theoretical solution to generate a numerical expression that allows obtaining with a 15.2% of deviation in 2,192 tests, a value of the average coefficient of heat transfer by condensation very similar to the one obtained with the use of the most referenced model in the consulted literature, the empirical model of Chato.

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References

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