Condensation of steam with and without the presence of non-condensable gases in a vertical tube

Condensation in a vertical tube bundle passive condenser – Part 1: Through flow condensation

“…In this mode, uncondensed steam and NC gas pass through the PCCS condensers and are vented to the SP through the vent line. This mode of [5], which provided the first practical correlation for degradation of condensation from NC gas from experiments with steam-gas condensation on vertical wall, there is substantial amount of experimental and modeling work done on condensation of steam inside a vertical tube in the presence of NC gas [6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23]. Most of these work relate to the through flow mode operation of the PCCS and were conducted with secondary heat removal through forced convention cooling except Kim and No [18] who used pool boiling, but in a large rectangular tank, and the experiments did not involve the presence of NC gas.…”

Experimental analysis of steam condensation in vertical tube with small diameter

“…The first chosen study for comparison published by Al-Shammari et al [25] is aimed on steam condensation with and without presence of non-condensable gas. The published results of condensation heat transfer coefficient without presence of non-condensable gas are in range a v = 4790 W/(m 2 K) to a v = 8518 W/(m 2 K) with mean value a v = 6502 W/(m 2 K), according to Fig.…”

“…The theme of water steam condensation is continuously studied in many articles by theoretical or experimental way, for example [22][23][24][25] and recently others [26][27][28][29]. Water steam condensation in vertical tube is also recently studied in article [30], but the study is for wide tube with ratio of length to inner diameter L/D = 1.10.…”

“…Impact of variable inlet temperature and mass flow rate of water steam on condensation heat transfer coefficient is also studied. The obtained results are correlated with five chosen equations for prediction of condensation heat transfer coefficient and compared with other experimental studies [25,[31][32][33][34]. The wave's effect on condensation heat transfer coefficient is evaluated, too.…”

Review of vapor condensation heat and mass transfer in the presence of non-condensable gas

“…Al-Shammari et al [94] experimentally investigated the FWC of pure steam and steam in the presence of NCG inside a vertical tube; the results showed the effect of NCG on heat and mass transfer resistances in the gas phase of the condensation process, in the steam runs, the gas side heat transfer resistance was very small and the main resistance was due to condensate film. This resistance increased significantly for steam-NCG runs, particularly toward the top part of the tube.…”