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Thermodynamic optimization of phase-change energy storage using two or more materials

Publication ,  Journal Article
Lim, JS; Bejan, A; Kim, JH
Published in: Journal of Energy Resources Technology, Transactions of the ASME
January 1, 1992

This paper documents the relative merits of using more than one type of phasechange material for energy storage. In the case of two phase-change systems in series, which are melted by the same stream of hot fluid, there exists an optimal melting point for each of the two materials. The first (upstream) system has the higher of the two melting points. The second part of the paper addresses the theoretical limit in which the melting point can vary continuously along the source stream, i.e., when an infinite number of different (and small) phase-change systems are being heated in series. It is shown that the performance of this scheme is equivalent to that which uses an optimum single phase-change material, in which the hot stream remains unmixed during the melting process. The time dependence, finite thickness and longitudinal variation of the melt layer caused by an unmixed stream are considered in the third part of the paper. It is shown that these features have a negligible effect on the optimal melting temperature, which is slightly higher than (T∞, Te)1/2. © 1992 by ASME.

Duke Scholars

Published In

Journal of Energy Resources Technology, Transactions of the ASME

DOI

EISSN

1528-8994

ISSN

0195-0738

Publication Date

January 1, 1992

Volume

114

Issue

1

Start / End Page

84 / 90

Related Subject Headings

  • Energy
  • Civil Engineering
  • 4019 Resources engineering and extractive metallurgy
  • 4015 Maritime engineering
  • 4005 Civil engineering
  • 0914 Resources Engineering and Extractive Metallurgy
  • 0913 Mechanical Engineering
  • 0911 Maritime Engineering
  • 0905 Civil Engineering
 

Citation

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Lim, J. S., Bejan, A., & Kim, J. H. (1992). Thermodynamic optimization of phase-change energy storage using two or more materials. Journal of Energy Resources Technology, Transactions of the ASME, 114(1), 84–90. https://doi.org/10.1115/1.2905925
Lim, J. S., A. Bejan, and J. H. Kim. “Thermodynamic optimization of phase-change energy storage using two or more materials.” Journal of Energy Resources Technology, Transactions of the ASME 114, no. 1 (January 1, 1992): 84–90. https://doi.org/10.1115/1.2905925.
Lim JS, Bejan A, Kim JH. Thermodynamic optimization of phase-change energy storage using two or more materials. Journal of Energy Resources Technology, Transactions of the ASME. 1992 Jan 1;114(1):84–90.
Lim, J. S., et al. “Thermodynamic optimization of phase-change energy storage using two or more materials.” Journal of Energy Resources Technology, Transactions of the ASME, vol. 114, no. 1, Jan. 1992, pp. 84–90. Scopus, doi:10.1115/1.2905925.
Lim JS, Bejan A, Kim JH. Thermodynamic optimization of phase-change energy storage using two or more materials. Journal of Energy Resources Technology, Transactions of the ASME. 1992 Jan 1;114(1):84–90.

Published In

Journal of Energy Resources Technology, Transactions of the ASME

DOI

EISSN

1528-8994

ISSN

0195-0738

Publication Date

January 1, 1992

Volume

114

Issue

1

Start / End Page

84 / 90

Related Subject Headings

  • Energy
  • Civil Engineering
  • 4019 Resources engineering and extractive metallurgy
  • 4015 Maritime engineering
  • 4005 Civil engineering
  • 0914 Resources Engineering and Extractive Metallurgy
  • 0913 Mechanical Engineering
  • 0911 Maritime Engineering
  • 0905 Civil Engineering