REVIEWHEAT TRANSFER IN CONDENSATION OF VAPOR MOVING INSIDE VERTICAL TUBES
I. I. Gogonin UDC 536.423.4.535.5 A review of works devoted to the study of heat transfer in condensation of moving vapor in cocurrent flow of vapor and film is presented. Generalization of a wide range of experimental data obtained by different authors showed that in wave regimes of film flow conditions take place under which an increase in vapor velocity does not lead to enhancement of heat transfer, as compared to heat transfer in condensation of motionless vapor. In turbulent film flow, an intense entrainment of the film from the crests of waves into the vapor core begins when We > Wecr, thus leading to considerable enhancement of heat transfer. Institute of Thermal Physics, Siberian Branch of the Russian Academy of Sciences, 1 Lavrent'ev Ave., Novosibirsk, 630090, Russia; email: gogonin@itp.nsc.ru. Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 77, No. 2, pp. 18-22, March-April, 2004. Original article submitted July 2, 2003.