Experimental study of inverted annular film boiling in a vertical tube cooled by R-134a

• Published in: International journal of multiphase flow Vol. 37; no. 1; pp. 67 - 75
• Main Authors: Nakla, Meamer El, Groeneveld, D.C., Cheng, S.C.
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier Ltd 2011; Elsevier
• Subjects: Annular; Applied sciences; Energy; Energy. Thermal use of fuels; Equivalence; Exact sciences and technology; Film boiling; Flux; Heat transfer; Hot-patch techniques; Inlets; Inverted annular film boiling; Theoretical studies. Data and constants. Metering; Trends; Tubes; Inverted annular film boiling; Hot-patch techniques; Subcooling; Critical heat flow; Heat flow; Film boiling; Heat transfer coefficient; Experimental study; Refrigerant fluid; Heat transfer; Vertical tube

► Heat transfer coefficient vs. quality curve can be divided into four regions depending on the flow regime. ► Film boiling heat transfer coefficient increases with increasing pressure and mass flux. ► Heat flux has weak effect on film boiling heat transfer coefficient. ► Inlet subcooling affects he...