PERFORMANCE ANALYSIS OF DROPWISE CONDENSATION
Keywords:
Dropwise condensation, Flimwise condensation, vapour deposition, Ni-Cr, TeflonAbstract
Drop wise condensation (DWC) is under development as it offers extremely high heat transfer (5-7
times higher) by preventing the buildup of the condensate liquid layer formed in the film wise condensation
(FWC). This project work is an experimental based and objective is to break the condensate formed on the
cold surface so as to improve the heat transfer rate. Hence an analysis has been done over circular, elliptical
and rhombus shaped tubes for the performance DWC and rhombus shaped tube is suggested, as its shape will
not permit the buildup of the layer of the condensate.
Considerable attention has been worldwide to promote drop wise condensation on circular tubes
using promoter like gold, silver, plasma, organic material etc., In the present work vapour deposition is used
for coating the copper tubes is proposed to use Ni-Cr and TEFLON etc., to promote the drop wise
condensation. The characteristics of drop wise condensation on various shapes of tube with three different
angle tubes were experimentally studied and their results are compared and new Correlations will be derived
for DWC for each shape of the be tube with various angles.
