Boiling heat transfer of a ternary refrigerant mixture inside a horizontal smooth tube

✍ Scribed by Lisheng Zhang; Eiji Hihara; Takamoto Saito; Jong-Taek Oh

• Publisher: Elsevier Science
• Year: 1997
• Tongue: English
• Weight: 881 KB
• Volume: 40
• Category: Article
• ISSN: 0017-9310
• DOI: 10.1016/s0017-9310(96)00301-8

✦ Synopsis

Ah&act-A theoretical model for predicting the forced convective boiling heat transfer coefficients of ternary mixtures is presented. The effect of mass diffusion near the gas-liquid interface is considered in both nucleate boiling and forced convection vaporization contributions. The predicted heat transfer coefficients are compared with experimental data, which are obtained for an HFC32 : 125 : 134a (23 : 25 : 52 wt%) mixture inside a horizontal smooth tube 6.0 mm i.d. and 4.0 m long, and in the ranges of heat flux l&20 kW II-* and of mass flux 150-400 kg me2 s-'. The present predictive method shows reasonable agreement with the experimental data within an accuracy of +30%.