Film boiling occurs at __________ pressure.

Related MCQs

• Boiling point elevation for a strong and concentrated solution is found by Duhring's rule, which states that at the same pressure, the boiling point of a solution is a linear function of the __________ of pure water.
• In case of __________ boiling, the liquid temperature is below the saturation temperature and the boiling takes place in the vicinity of the heated surface.
• Boiling of milk in an open vessel is an example of __________ boiling.
• When vaporisation takes place through a blanketting film of gas, the phenomenon is termed as __________ boiling.
• Film boiling is usually not desired in commercial equipments, because
• 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
• If h1 = inner film co-efficient and /h2 = outer film co-efficient, then the overall heat transfer co-efficient is
• 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.