Film condensation of water in a vertical tube with countercurrent vapour flow

In this experimental investigation of condensation heat transfer, the effects of film Reynolds number ReF, Prandtl number PrF and interfacial shear stress τV have been studied independently. For condensation without considerable interfacial shear stress τV, correlations from the literature are confirmed. In the case of increasing values of τV a reduction in heat transfer coefficients is found for ReF<10 and an increase for 20