Study of droplet dynamics and condensation heat transfer on superhydrophobic copper surface

Superhydrophobic surface for dropwise condensation is prepared using hotplate solution immersion method on copper substrate. The preprocessed bare plate immersed in a consist of 0.004-0.008 M ethanol (CH3-CH2-OH) and tetradecanoic acid (CH3(CH2)12COOH) then heating the plates at 30-50?C 1-6 hours. contact angle water droplet measured low bond axisymmetric drop shape analysis, which gives maximum 168? average value 166? ?2?. obtained by adjusting composition solution, temperature time to 0.006 M, 45?C 4 hours, respectively. various superhydrophobic surfaces are changing constituents processing time, Further dynamic behavior like jumping effect rolling presented this work. In addition, experimental work carried out results com-pared with produces higher heat transfer coefficient.