Film condensation is promoted on a/an __________ surface.

Related MCQs

• The local surface conductance for laminar film condensation on vertical surface is (where, t = film thickness)
• The average heat transfer co-efficient for laminar film condensation on vertical surface is inversely proportional to (where, ΔT = Temperature drop across condensate film)
• The film thickness for laminar film condensation on vertical surface __________ from top to bottom.
• The heat transfer co-efficient in film type condensation is __________ that for dropwise condensation.
• Dropwise condensation is promoted on a/an __________ surface.
• For condensation of pure vapors, if the heat transfer co-efficients in filmwise and drop-wise condensation are respectively hf and hd, then
• The most conducive surface for dropwise condensation to occur is the __________ surface.
• Condensing film co-efficient for steam on horizontal tubes ranges from 5000 to 15000 Kcal/hr.m2.°C. Condensation of vapor is carried out inside the tube in a shell and tube heat exchanger, when the
• In convection heat transfer from hot flue gases to water tube, even though flow may be turbulent, a laminar flow region (boundary layer of film) exists close to the tube. The heat transfer through this film takes place by
• The film co-efficient is decreased due to the presence of non-condensing gases in the vapors. The film co-efficient of superheated vapor as compared to that of saturated vapor is