Entropy Generation During the Interaction of Thermal Radiation with a Surface

The entropy calculation for radiation fluxes is reviewed and applied to simple radiation-surface interactions. A plate interacting with radiation from a hot object in the zenith of the hemisphere surrounded by a colder atmosphere is analyzed in detail. The entropy generation rate upon absorption and...

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Bibliographic Details
Main Authors: Stephan Kabelac, Rainer Conrad
Format: Article
Language:English
Published: MDPI AG 2012-04-01
Series:Entropy
Subjects:
Online Access:http://www.mdpi.com/1099-4300/14/4/717/
Description
Summary:The entropy calculation for radiation fluxes is reviewed and applied to simple radiation-surface interactions. A plate interacting with radiation from a hot object in the zenith of the hemisphere surrounded by a colder atmosphere is analyzed in detail. The entropy generation rate upon absorption and reflection of the incoming radiation is calculated and discussed. The plate is adiabatic in a first version (thermal equilibrium), then its temperature is fixed by allowing a heat flux to or from the plate. This analysis prepares the way towards an entropy generation minimization analysis of more complex radiation settings.
ISSN:1099-4300