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Pitch Effects of Encapsulated Phase Change Material Tubes on Charging and Discharging of Solar Thermal Collectors

[+] Author Affiliations
Yan Su, Tiniao Ng

University of Macau, Taipa, Macau

Paper No. HT2017-4746, pp. V001T09A010; 9 pages
doi:10.1115/HT2017-4746
From:
  • ASME 2017 Heat Transfer Summer Conference
  • Volume 1: Aerospace Heat Transfer; Computational Heat Transfer; Education; Environmental Heat Transfer; Fire and Combustion Systems; Gas Turbine Heat Transfer; Heat Transfer in Electronic Equipment; Heat Transfer in Energy Systems
  • Bellevue, Washington, USA, July 9–12, 2017
  • Conference Sponsors: Heat Transfer Division
  • ISBN: 978-0-7918-5788-5
  • Copyright © 2017 by ASME

abstract

Comparative studies of five cases of solar collectors have been simulated by the Non-Dimensional Lattice Boltzmann Method (NDLBM) to obtain the effects of the encapsulated phase change material tubes. Both charging and discharging procedures have been compared. The transient averaged temperature, PCM porosity, and energy ratio are presented. Five geometry cases of solar collectors with and without encapsulated phase change material tubes have been simulated. Transient isotherms and streamlines with porosity have been shown for both outside and inside PCM tube regions. The performance enhancement because of the PCM tubes has been presented and the effects due to distributions of the PCM tubes are also discussed. The Pitch effects have been compared based on the three cases.

Copyright © 2017 by ASME

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