Publicou 8 edições por ano
ISSN Imprimir: 1065-5131
ISSN On-line: 1563-5074
Indexed in
AIRSIDE PERFORMANCE OF FIN-AND-TUBE HEAT EXCHANGERS HAVING SINE WAVE OR SINE WAVE-SLIT FINS
RESUMO
The heat transfer and friction characteristics of heat exchangers having sine wave or sine wave-slit fins were experimentally investigated. Thirty-eight samples having different waffle heights (1.5 and 2.0 mm), fin pitches (1.3 to 1.7 mm), and tube rows (one to three) were tested. Results show that the sine wave-slit geometry provided 20% higher heat transfer coefficients and 44% higher friction factors than the sine wave geometry. The j/f ratios of the sine wave geometry, however, were higher than those of the sine wave-slit geometry. Within the present geometric variations, the effect of waffle height on the heat transfer coefficient was not prominent. The effect of fin pitch on j and f factor was also negligible for sine wave fin. For sine wave-slit fin, however, both j and f factors increased as fin pitch decreased. New correlations were developed based on the present data.
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Wei Xiu-Qin, Zhang Yong-Heng, Hu Wan-Ling, Wang Liang-Bi, The fluid flow and heat transfer characteristics in the channel formed by flat tube and dimpled fin, International Journal of Thermal Sciences, 104, 2016. Crossref
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Saha Sujoy Kumar, Ranjan Hrishiraj, Emani Madhu Sruthi, Bharti Anand Kumar, Active and Passive Techniques: Their Applications, in Introduction to Enhanced Heat Transfer, 2020. Crossref