A Theoretical Approach to Dropwise Condensation Using Population Balance Concept

Autor:	Srinivas Vemuri, Kwang J. Kim, B. D. Wood, T. W. Bell
Rok vydání:	2004
Předmět:	Physics::Fluid Dynamics Coalescence (physics) Contact angle education.field_of_study Heat flux Chemistry Drop (liquid) Heat transfer Population Thermodynamics Growth rate Thermal conduction education
Zdroj:	Heat Transfer, Volume 2.
DOI:	10.1115/imece2004-60585
Popis:	A model using the population balance concept is used to derive a theoretical formula to predict the drop-size distribution of small drops which grow mainly by direct condensation. All the important resistances to heat transfer such as the heat conduction through the drop, vapor-liquid interface are considered in developing this model. By knowing the contact angle of the drop made with the condensing surface and the maximum drop radius the sweeping effect of large falling drops could be calculated which is also incorporated into the model. This is combined with the well known size distribution for large drops proposed by Le Fevre and Rose (1966) which grow mainly by coalescence and with the growth rate of single drops to compute the heat flux during the process of dropwise condensation. The data obtained from this theoretical model is compared to that of the data obtained from our experimentation. There has been a satisfactory agreement between our experimental data and the present theoretical model.Copyright © 2004 by ASME
Databáze:	OpenAIRE
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