This work addresses the entropy generation aspects of a latent heat storage in which the energy delivered by a hot gas flowing through a cylindrical tube induces melting of the material surrounding the tube. The heat transfer for conduction-dominated melting is analyzed, taking into account the two-dimensional effects. The storage process irreversibilities associated with both the gas flow and the heat transfer (including entropy generation in the melted layer) are considered. The number of entropy generation units, which is a measure of the thermodynamic imperfection of the energy storage process, is expressed as a function of the main design parameters of the system. Analytic bounds and simplified asymptotic expressions for this quantity are derived. The results are compared with earlier one-dimensional studies.
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Thermodynamic Analysis of Latent Heat Storage in a Shell-and-Tube Heat Exchanger
Ch. Charach,
Ch. Charach
Center for Energy and Environmental Physics, J. Blaustein Institute for Desert Research, Ben Gurion University of the Negev, Sede-Boqer Campus 84990, Israel
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A. Zemel
A. Zemel
Center for Energy and Environmental Physics, J. Blaustein Institute for Desert Research, Ben Gurion University of the Negev, Sede-Boqer Campus 84990, Israel
Search for other works by this author on:
Ch. Charach
Center for Energy and Environmental Physics, J. Blaustein Institute for Desert Research, Ben Gurion University of the Negev, Sede-Boqer Campus 84990, Israel
A. Zemel
Center for Energy and Environmental Physics, J. Blaustein Institute for Desert Research, Ben Gurion University of the Negev, Sede-Boqer Campus 84990, Israel
J. Sol. Energy Eng. May 1992, 114(2): 93-99 (7 pages)
Published Online: May 1, 1992
Article history
Received:
April 4, 1991
Revised:
October 18, 1991
Online:
June 6, 2008
Citation
Charach, C., and Zemel, A. (May 1, 1992). "Thermodynamic Analysis of Latent Heat Storage in a Shell-and-Tube Heat Exchanger." ASME. J. Sol. Energy Eng. May 1992; 114(2): 93–99. https://doi.org/10.1115/1.2929995
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