Entrainment in condensing annular flow |
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Authors: | E Guevara DHT Gotham |
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Institution: | Simon Bolivar University, Venezuela;Department of Mechanical Engineering, The City University, Northampton Square, London ECIV 0HB, England |
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Abstract: | Experiments were carried out on low pressure, steam-water, condensing annular flow in a 38.1 mm i.d. horizontal tube. The velocity of the steam at inlet was in the range 97–186 m/s.Measurements of the liquid film flow rate at the end of the test section, which arose as a result of condensation, entrainment, and deposition, were made by extracting the film through a porous sinter bush. The liquid flow rate in the vapour core at exit was deduced from these measurements together with a heat balance on the condenser section.These results were compared with three correlations for entrainment developed from air-water studies. On the basis of the experimental data available, there was sufficient agreement in one case to warrant further investigation. |
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