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Large-scale heat transfer experiments with supercritical R134a flowing upward in a circular tube

Feuerstein, F.; Coelho Silva, A.; Klingel, D.; Cheng, X.

Abstract (englisch):

Heat transfer experiments with supercritical Freon R134a flowing upward in a circular tube with inner diameter of 10 mm and a heating length of 2495 mm were conducted with a wide range of parameters: mass fluxes of 300–2000 kg/m²s, heat fluxes of 10–200 kW/m², bulk fluid temperature of 50–124 °C and pressures of 4.22–5.51 MPa. Effects of heat flux, mass flux, pressure and inlet temperature on heat transfer behavior are analyzed. Significant heat transfer deterioration is observed above a critical heat flux to mass flux ratio. Six representative correlations were selected and compared with the test data.


Zugehörige Institution(en) am KIT Fakultät für Maschinenbau – Institut für Fusionstechnologie und Reaktortechnik (IFRT)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2017
Sprache Englisch
Identifikator ISSN: 0365-8414, 1431-5254
KITopen-ID: 1000071446
Erschienen in Atw
Verlag INFORUM Verlags- und Verwaltungsgesellschaft mbH
Band ISSUE 2
Heft Vol. 62
Seiten 121 - 125
Projektinformation MWK, MWK ZUK IV, 14740 (intern)
Schlagwörter supercritical fluid, heat transfer, heat transfer deterioration, comparsion
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