An Experimental Study of the Effects of Inclination and Air Concentration on Film Condensation on a Flat Plate Facing Upwards and Downwards = 응축판의 기울기와 공기함량이 필름응축에 미치는 영향에 관한 실험적 연구

다국어 초록 (Multilingual Abstract)

Rates of heat transfer have been measured on a water-cooled flat plate promoting film condensation as steam and mixtures of steam and air flowed over it. The rates of heat transfer decreased as the angle of the plate to the horizontal was reduced and as the concentration of air was increased. A notable observation was that comparison of results for the upward and downward facing cases showed that the heat transfer rates with pure steam are higher for an upward facing plate than for a downward facing one. However, with air present in the steam, this trend is reversed. In the case of pure steam, the test results show good agreement with predictions made using the Nusselt theory.