A model for the performance of a vertical tube condenser in the presence of noncondensable gases

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.…”

Convective condensation of vapor in the presence of a non-condensable gas of high concentration in laminar flow in a vertical pipe

“…Traces of non-condensable gases may enter into the condenser either as gases dissolved in the boiler feed water or due to leakage in the condenser. The effect of the presence of these gases on the process of condensation of vapor inside vertical tubes and channels was studied in literature [8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23]. It is found that the existence of low percentage of non-condensable gas in vapors greatly reduces the heat transfer and the condensation rates.…”

“…Studies on the condensation of vapor in the presence of non-condensable gas in vertical tube are also available in literature [16][17][18][19][20][21][22][23]. Dehbi and Guentay [16] included the effect of interfacial shear stress on condensation, and they used heat and mass transfer analogy to obtain condensation rates. They investigated the effect of the system parameters such as the inlet gas fraction, the mixture inlet flow rate and the total pressure on the performance of the condenser.…”

Piping-Main Scheme for Condensers against the Adverse Impact of Environmental Conditions on Air-Cooled Thermal Power Units

“…The difference between the maximum and minimum flow rate ranges from 36.3 kg/s (rows 1-8) to 22.64 kg/s (rows 1-12), and finally to 20.31 kg/s (rows 1-16) under 3 m/s ambient wind. When the wind speed is 9 m/s, the difference between the maximum and minimum flow rate ranges from 86.91 kg/s (rows 1-8) to 59.09 kg/s (rows 1-12), and finally to 39.07 kg/s (rows [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16]. This indicates that the proposed system can effectively provide uniform flow rates under different wind velocity conditions in winter.…”