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Title: Exergy maximization in refrigeration storage units with heat leak
Authors: Sahoo, R K
Keywords: refrigeration
heat leaks
Issue Date: 1989
Publisher: Elsevier
Citation: Cryogenics, Vol 29, Iss 1, P 59-64
Abstract: This Paper presents Second Law of Thermodynamics analysis techniques for sensible refrigeration energy storage units with non-adiabatic boundaries. The investigation is based on the minimization of entropy production due to a finite temperature difference. The results of this study indicate three basic points: 1, in the presence of heat leaks, the irreversibility rate is more than in its absence; 2, the increase in irreversibility due to heat leaks reduces the effective N(sub)tu exponentially; 3, there exists a dimensionless optimum time parameter which relates two other fundamental dimensionless parameters for the maximization of useful work stored. These fundamental parameters are N(sub)tu associated with heat flow across the non-adiabatic wall and N(sub)tu of the storage unit. These points suggest that the leakage heat affects the entropy production adversely and hence it should be kept at a minimum.
Description: Copyright for this article belongs to Elsevier Science Ltd
Appears in Collections:Journal Articles

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