THERMAL SCIENCE

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M. El Haj Assad

STUDY OF ENTROPY GENERATION IN A SLAB WITH NON-UNIFORM INTERNAL HEAT GENERATION

ABSTRACT
Analysis of entropy generation in a rectangular slab with a nonuniform internal heat generation is presented. Dimensionless local and total entropy generation during steady state heat conduction through the slab are obtained. Two different boundary conditions have been considered in the analysis, the first with asymmetric convection and the second with constant slab surface temperature. Temperature distribution within the slab is obtained analytically. The study investigates the effect of some relevant dimensionless heat transfer parameters on entropy generation. The results show that there exists a minimum local entropy generation but there does not exist a minimum total entropy generation for certain combinations of the heat transfer parameters. The results of calculations are presented graphically.
KEYWORDS
slab, internal heat generation, entropy generation, convection
PAPER SUBMITTED: 2011-04-20
PAPER REVISED: 2012-03-03
PAPER ACCEPTED: 2012-03-11
DOI REFERENCE: https://doi.org/10.2298/TSCI110420041A
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2013, VOLUME 17, ISSUE Issue 3, PAGES [943 - 950]
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Study of entropy generation in a slab with non-uniform internal heat generation

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