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Computational Thermal Sciences: An International Journal

Publication de 6  numéros par an

ISSN Imprimer: 1940-2503

ISSN En ligne: 1940-2554

The Impact Factor measures the average number of citations received in a particular year by papers published in the journal during the two preceding years. 2017 Journal Citation Reports (Clarivate Analytics, 2018) IF: 1.5 To calculate the five year Impact Factor, citations are counted in 2017 to the previous five years and divided by the source items published in the previous five years. 2017 Journal Citation Reports (Clarivate Analytics, 2018) 5-Year IF: 1 The Immediacy Index is the average number of times an article is cited in the year it is published. The journal Immediacy Index indicates how quickly articles in a journal are cited. Immediacy Index: 0.3 The Eigenfactor score, developed by Jevin West and Carl Bergstrom at the University of Washington, is a rating of the total importance of a scientific journal. Journals are rated according to the number of incoming citations, with citations from highly ranked journals weighted to make a larger contribution to the eigenfactor than those from poorly ranked journals. Eigenfactor: 0.00017 The Journal Citation Indicator (JCI) is a single measurement of the field-normalized citation impact of journals in the Web of Science Core Collection across disciplines. The key words here are that the metric is normalized and cross-disciplinary. JCI: 0.28 SJR: 0.279 SNIP: 0.544 CiteScore™:: 2.5 H-Index: 22

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NUMERICAL ANALYSIS OF CONCENTRIC DOUBLE PIPE LATENT THERMAL ENERGY STORAGE UNIT USING TWO PHASE CHANGE MATERIALS FOR SOLAR WATER HEATING APPLICATIONS

Volume 10, Numéro 4, 2018, pp. 355-374
DOI: 10.1615/ComputThermalScien.2018022912
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RÉSUMÉ

This paper presents a numerical study based on the energy equations for the transient thermal behavior of a concentric double pipe latent thermal energy storage (LTES) unit for solar water heating applications. The annular space between tubes is filled with two paraffin wax phase change materials (PCMs), named PCM1 and PCM2. A heat transfer fluid (HTF: saturated water) flows through the inner tube and transfers the heat to the PCMs. Several numerical investigations were conducted in order to examine the effects of the HTF inlet temperatures on the variation of the temperature of PCM1 and PCM2, melting fraction, melting and solidification time, HTF outlet temperature, heat transfer rate, and total energy stored. Numerical results show that charging and discharging processes have three distinct periods for the change of PCMtemperature and melting fraction.When the temperature difference between the HTF inlet temperature and PCM increase, the variation of the temperature and melting fraction in different locations in the PCM increases considerably, and then the charging and discharging process is rapidly reached. The melting times of PCM1 and PCM2 decrease with an increase in the HTF inlet temperature. Moreover, the decreasing degree of their melting times is different. The present analysis provides theoretical guidance for designing optimization of a concentric double pipe LTES unit filled with two PCMs.

CITÉ PAR
  1. Chibani Atef, Merouani Slimane, Benmoussa Fouzi, Computational analysis of the melting process of Phase change material-metal foam-based latent thermal energy storage unit: The heat exchanger configuration, Journal of Energy Storage, 42, 2021. Crossref

  2. Chibani Atef, Merouani Slimane, Acceleration of Heat Transfer and Melting Rate of a Phase Change Material by Nanoparticles Addition at Low Concentrations, International Journal of Thermophysics, 42, 5, 2021. Crossref

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