The role of contact angles and contact angle hysteresis in dropwise condensation heat transfer

Effects of surface free energy and nanostructures on dropwise condensation

“…Lan [21] developed a heat-transfer model with consideration of the interfacial interaction between the condensate and the condensing surface. Neumann et al [22] investigated the effect of the contact angle hysteresis on the heat-transfer characteristics during DWC. It was found that the heat-transfer during DWC is related to the contact angle hysteresis of the surface.…”

Condensation heat transfer coefficient versus wettability

“…The authors investigated the effect of drop behavior generally in the drop coalescence stage [32][33][34][35] and also in the last stages of condensation [36]. They mostly determined that heat transfer increases with the decrease of CAH because large droplets easily flow on surfaces with low CAH [36].…”

Wettability Effects on Heat Transfer

“…16. Drop growth rate with a temperature gradient for different wettabilities (Pulipaka, 2003) www.intechopen.com Neumann et al (1978) studied the effects of varying contact angle hysteresis on the efficiency of a drop-wise condensation heat transfer on a cylinder type condenser. They prepared two kinds of the surface wettability with a coating of Palmitic and Stearic acids.…”

“…17. Heat transfer coefficient, h and contact angle hysteresis (Neumann et al, 1978) Recently, studies of condensation on the super-hydrophobic surface, which has a micro structured surface have been conducted. Furuta et al (2010) studied a drop-wise condensation with different hydrophobic surfaces, which are treated with two fluoroalkylsilanes (FAS3 and FAS17).…”