Effect of Flow Velocity on Condensation Characteristics of Vapors Containing High Concentrations of Non-Condensable Gases
To investigate the effect of flow velocity on the condensation characteristics of vapor containing high concentrations of noncondensable gas,an experimental system was built to visualize a water-air vapor mixture,and the condensation characteristics of the mixture on a vertical surface at different flow velocities were investigated.The study shows that both adding ribs and increasing the flow velocity can enhance the heat transfer characteristics of mixed vapor condensation,and as the concentration of non-condensable gas increases,the more significant the effect of both enhanced heat transfer,and under the combined effect of both,the heat transfer coefficient can be increased by 239％.In the actual heat exchanger design,the resistance pressure drop should be considered to select the appropriate flow velocity and strengthen the ribs.
high concentrations of non-condensable gasflow velocitycondensation characteristicslongitudinal rib surface
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维普
