Flooding Regimes for a Distillation Column with Structured Packing

Influence of the developing region of the thermal boundary layer on heat transfer during vapor condensation on horizontal tube bundles

“…It is obvious that heat transfer on the bundles of tubes with D = 3 and 6 mm is noticeably more intense than that on the tubes of a larger diameter. The increase in the heat transfer intensity is explained by the influence of capillary waves generated by the detachment of condensate drops, see more detailed comment in [11].…”

“…Data on heat transfer on the bundles of tubes with a diameter varied from 3 to 45 mm are presented in Fig. 3 [11]. It is obvious that heat transfer on the bundles of tubes with D = 3 and 6 mm is noticeably more intense than that on the tubes of a larger diameter.…”

“…In this paper, the authors touched upon some important points concerning the influence of the developing region on heat transfer during condensation of stationary vapor without noncondensable impurities on tube bundles, using the results obtained earlier by I.I. Gogonin. The schematic diagram of the experiment (see [11]) and distributions of liquid temperatures in space between the tubes are plotted in Fig. 1 (a more detailed diagram is given in [9,11]).…”

“…Gogonin. The schematic diagram of the experiment (see [11]) and distributions of liquid temperatures in space between the tubes are plotted in Fig. 1 (a more detailed diagram is given in [9,11]). It can be seen that the liquid flows onto the underlying tube in the bundle at the saturation temperature.…”

“…The control series of experiments were carried out with condensation of freon R12 [11]. In one series, the variable parameter was the diameter of tubes, where condensation took place, and in the other, it was the velocity of the free fall of condensate flowing onto the experimental tube (which was achieved by changing the ratio of the intertubular distance to the tube diameter S/D).…”