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Journal of Enhanced Heat Transfer

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ISSN Druckformat: 1065-5131

ISSN Online: 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

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PERFORMANCE CHARACTERISTICS OF DEEP CORRUGATED TUBES WITH TWISTED-TAPE INSERTS

Volumen 19, Ausgabe 1, 2012, pp. 1-11
DOI: 10.1615/JEnhHeatTransf.2011002711
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ABSTRAKT

Recent investigation of the performance characteristics of some passive compound heat transfer enhancement techniques revealed that the combination of corrugated tubes with twisted-tape inserts seems to be a very attractive enhancement technique for single-phase turbulent flow. This holds in the range of height-to-diameter ratios e/Di > 0.04 and small relative pitches of the twisted tape, H/Di. This paper presents the latest results of an experimental investigation of the friction factors and heat transfer coefficients (inside with water as working fluid and outside with condensing steam) of eight single-start, spirally corrugated tubes with geometrical parameters: 0.053 < e/Di < 0.089 and ridge pitch-to-height ratio 6.8 < p/e < 11.0 combined with twisted tapes with H/Di = 4.7, 5.7, and 7.6, in the range of Reynolds number, 3.5 × 103 < Re < 5.0 × 104. The increase of outside heat transfer coefficient E0 is presented as a function of geometrical parameters of the depth of the corrugated tube through the Weber number, We, and the relative pitch of the twisted tape H/Di. The effect of Reynolds number on E0 is discussed.

REFERENZIERT VON
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