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Journal of Enhanced Heat Transfer

Publication de 8  numéros par an

ISSN Imprimer: 1065-5131

ISSN En ligne: 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

Convective Vaporization of Pure Refrigerants in Enhanced and Integral-Fin Tube Banks

Volume 1, Numéro 4, 1994, pp. 351-364
DOI: 10.1615/JEnhHeatTransf.v1.i4.60
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RÉSUMÉ

Convective vaporization data were obtained on staggered tube banks of enhanced nucleate boiling tubes and integral-fin tubes (IFT) with an equilateral pitch-to-diameter ratio of 1.25. Pure refrigerants R-11, R-123, and R-134a were used as working fluids. The data were taken at 4 and 27 C in an apparatus that allows an independent control of vapor quality, mass velocity, and heat flux. The data span vapor qualities of 0 to 0.9, mass velocities of 10 to 28 kg/m2·s, and heat flux of 15 to 48 kW/m2. The data were predicted using a modified superposition model (using 5=1) and also correlated by an asymptotic model. The nucleate boiling components were obtained from pool boiling data, and single-phase heat transfer coefficients were calculated using appropriate correlations for tube banks. The modified superposition model predicted approximately 80% of the GEWA-SE and Turbo-B data within + 20% but did a poor job predicting the integral-fin tube bank data with R-11 at 4 C. Tube banks made of enhanced nucleate boiling tubes, where boiling performance is governed mainly by subsurface cavities, show insignificant effect of forced convection when compared to plain or integral-fin tube banks.

CITÉ PAR
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