Entropy flow, entropy generation, exergy flux, and optimal absorbing temperature in radiative transfer between parallel plates

2010, Volume 4, Issue 3

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Frontiers in Energy >> 2010, Volume 4, Issue 3 doi: 10.1007/s11708-010-0006-0

Entropy flow, entropy generation, exergy flux, and optimal absorbing temperature in radiative transfer between parallel plates

Department of Thermal Science and Energy Engineering, University of Science and Technology of China, Hefei 230026, China;

Available online: 2010-09-05

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Abstract

Taking nonequilibrium radiative heat transfer between two surfaces as an example, the nonequilibrium thermodynamics of radiation is studied and discussed. The formulas of entropy flow, entropy generation, exergy flux, and optimal temperature of absorbing surface for maximum exergy output are derived. The result is a contribution to the thermodynamic analysis and optimization of solar energy utilization and can be applied in more complex radiative heat transfer cases.

Keywords

radiative heat transfer ; entropy generation ; exergy ; thermodynamics

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