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Title: Performance indicators for solar pipes with phase change storage

Abstract

Performance indicators for a solar pipe system in which solar radiation is stored as latent heat of a phase changing material are proposed. These performance indicators are aimed at serving as a yardstick by which such multivariables systems are evaluated. The indicators are the melt and solidification times obtained for standardized systems and conditions. These indicators enable the comparison between the suitability of systems with different materials and configurations to store and release thermal energy. The indicators are obtained from numerical solutions of the nonlinear heat conduction problem of the axisymmetric liquid-solid interface motion within the solar pipe. Longitudinal dimension required for the determination of the solidification time is added by an axial superposition of axisymmetric sections. This simplified approach enables a simple numerical solution for an otherwise complicated problem. Estimates of performance characteristics that are based on a simplified model and realistic materials point to the practical potential of solar pipe utilization.

Authors:
;  [1]
  1. Tel Aviv Univ. (Israel)
Publication Date:
OSTI Identifier:
5963954
Resource Type:
Journal Article
Journal Name:
Solar Energy (Journal of Solar Energy Science and Engineering); (United States)
Additional Journal Information:
Journal Volume: 47:5; Journal ID: ISSN 0038-092X
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; THERMAL ENERGY STORAGE EQUIPMENT; PERFORMANCE; COMPARATIVE EVALUATIONS; EFFICIENCY; HEAT PIPES; HEAT TRANSFER; LATENT HEAT STORAGE; MATHEMATICAL MODELS; PHASE CHANGE MATERIALS; ENERGY STORAGE; ENERGY TRANSFER; EQUIPMENT; EVALUATION; HEAT STORAGE; MATERIALS; STORAGE; 142000* - Solar Energy- Heat Storage- (1980-)

Citation Formats

Sokolov, M, and Keizman, Y. Performance indicators for solar pipes with phase change storage. United States: N. p., 1991. Web. doi:10.1016/0038-092X(91)90027-T.
Sokolov, M, & Keizman, Y. Performance indicators for solar pipes with phase change storage. United States. https://doi.org/10.1016/0038-092X(91)90027-T
Sokolov, M, and Keizman, Y. 1991. "Performance indicators for solar pipes with phase change storage". United States. https://doi.org/10.1016/0038-092X(91)90027-T.
@article{osti_5963954,
title = {Performance indicators for solar pipes with phase change storage},
author = {Sokolov, M and Keizman, Y},
abstractNote = {Performance indicators for a solar pipe system in which solar radiation is stored as latent heat of a phase changing material are proposed. These performance indicators are aimed at serving as a yardstick by which such multivariables systems are evaluated. The indicators are the melt and solidification times obtained for standardized systems and conditions. These indicators enable the comparison between the suitability of systems with different materials and configurations to store and release thermal energy. The indicators are obtained from numerical solutions of the nonlinear heat conduction problem of the axisymmetric liquid-solid interface motion within the solar pipe. Longitudinal dimension required for the determination of the solidification time is added by an axial superposition of axisymmetric sections. This simplified approach enables a simple numerical solution for an otherwise complicated problem. Estimates of performance characteristics that are based on a simplified model and realistic materials point to the practical potential of solar pipe utilization.},
doi = {10.1016/0038-092X(91)90027-T},
url = {https://www.osti.gov/biblio/5963954}, journal = {Solar Energy (Journal of Solar Energy Science and Engineering); (United States)},
issn = {0038-092X},
number = ,
volume = 47:5,
place = {United States},
year = {Tue Jan 01 00:00:00 EST 1991},
month = {Tue Jan 01 00:00:00 EST 1991}
}