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Journal of Enhanced Heat Transfer

年間 8 号発行

ISSN 印刷: 1065-5131

ISSN オンライン: 1563-5074

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: 2.3 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: 1.8 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: 0.2 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: 0.00037 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: 0.6 SJR: 0.433 SNIP: 0.593 CiteScore™:: 4.3 H-Index: 35

Indexed in

ANALYSIS OF THE IMPACT OF U-SHAPED STRUCTURE FOR HEADS OF LOOP THERMOSYPHON SOLAR WATER HEATER ON THERMAL STORAGE EFFICIENCY

巻 23, 発行 3, 2016, pp. 175-195
DOI: 10.1615/JEnhHeatTransf.2017015985
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要約

Loop thermosyphons are high-efficiency two-phase heat transfer devices capable of transporting thermal energy over long distances. In this paper, we present experiment results for three loop thermosyphon designs for use in solar water heaters: non-U-symmetric loop (asymmetric type), top-U-symmetric loop (symmetric vapor heads type), and both-U-symmetric loop (symmetric vapor and liquid heads type). Experiments were conducted to investigate thermal storage efficiency and temperature distribution under various heat loads and fill ratios. Our results demonstrate the importance of fill ratio and shape of the structure on thermal storage efficiency. The highest thermal storage efficiency values obtained in this study were as follows: non-U-symmetric loop (64.7%), top-U-symmetric loop, (79.8%), and both-U-symmetric loop thermosyphon (73.8%). Our simulation of daily operations revealed that a top-U-symmetric loop provides the best overall performance.

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