I301 MODELING AND EXPERIMENTS OF IN-TUBE CONDENSATION HEAT TRANSFER FOR R22 AND ITS ALTERNATIVE REFRIGERANT(Condensation and heat exchanger)

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概要

• 論文の詳細を見る

• In-tube condensation heat transfer has been investigated experimentally and theoretically. To study the condensation heat transfer characteristics of R22 and its alternative refrigerant R410A, a series of experiment have been performed for those refrigerant flows inside horizontal smooth and micro-fin tubes. The experimental results are presented and compared with previous works. Also, a condensation heat transfer modeling is presented for two-phase turbulent annular flow inside smooth tubes. For the modeling of in-tube condensation heat transfer, turbulent eddy viscosity model for condensate film are discussed, and a new turbulent eddy viscosity model is presented in this study. This model can account for the effects of interfacial shear stress and liquid entrainment as well as the eddy damping on the condensate film thickness, therefore, on the condensation heat transfer. Using this calculation model, local condensation heat transfer coefficients for annular flow inside horizontal smooth tubes were obtained, and the calculated values were compared with our own experimental results of condensation heat transfer for R22 and its alternative refrigerant R410A together with the existing correlations.

• 2000-10-01

著者

• Kwon Jeong-tae

  School Of Automotive & Mechanical Engineering Nambu University

• Kim Moo-Hwan

  Department of Mechanical Engineering, Pohang University of Science and Technology

• Kim Moo-hwan

  Department Of Mechanical Engineering Pohang University Of Science And Technology

関連論文

• Modeling and Experiments of In-Tube Condensation Heat Transfer for R22 and Its Alternative Refrigerant
• I301 MODELING AND EXPERIMENTS OF IN-TUBE CONDENSATION HEAT TRANSFER FOR R22 AND ITS ALTERNATIVE REFRIGERANT(Condensation and heat exchanger)

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