Abo Bibliothek: Guest

ISSN Online: 2377-424X

International Heat Transfer Conference 5
September, 3-7, 1974, Tokyo, Japan

HEAT TRANSFER RESISTANCES DURING FILM CONDENSATION

Get access (open in a dialog) DOI: 10.1615/IHTC5.1170
pages 284-288

Abstrakt

The investigation deals with the major heat transfer resistances during film condensation. Quantitative data is presented which indicates the existence of a resistance at the wall-condensate interface when condensing Freon 12 filmwise. The effects of condensate film instability-waves and the influence of turbulent transports are treated theoretically. The analyses clearly describe differences between film heat transfer resistances of low and high Prandtl number fluids i.e. Sodium, Freon 12 and Water. It is shown that in the case of the latter fluids, turbulent transports may have an appreciable effect on the rate of condensation. The heat transfer resistances at the condensate vapour interface are briefly dealt with.