Dropwise condensation occurs on ______________ surfaces?
A. Clean and dirt free
B. Smooth clean
C. Contaminated cooling
D. Polished
A. Clean and dirt free
B. Smooth clean
C. Contaminated cooling
D. Polished
A. 0.1
B. > 1
C. < 1
D. 1
A. Increasing temperature of the vapour
B. Decreasing temperature of the vapour
C. Increasing viscosity of the film of condensate
D. Increasing temperature drop
A. Condense steam
B. Release excess steam pressure by bleeding steam
C. Remove condensate and inert gases
D. None of these
A. Presence of a non-condensable gas decreases the condensing film co-efficient
B. Gases under high pressure are routed through the tube side, because high pressure gases are
corrosive in nature
C. Gases to be heated/cooled is normally routed through the shell side, because the corrosion
caused by the cooling water or steam condensate remain localised to the tubes
D. All A, B. & C.
A. Multipass fixed tube sheet
B. U-tube
C. Single pass fixed tube sheet
D. None of these
A. High temperature
B. High pressure
C. Low film co-efficient
D. None of these