Film condensation in a large diameter tube with upward steam flow

Abstract

Film condensation was considered for upward steam flow at the atmospheric pressure. The experimental data were obtained inside a vertical duralumin tube with the internal diameter of 200mm and roughness height of 0.14mm. The film Reynolds numbers and vapor Reynolds numbers were varied within the range of 1–16 and 280–3460, respectively. The obtained experimental data were lower than classical Nusselt prediction. The suggested correlation for the Nusselt number agrees the most of the data within 20%.