Leidenfrost point is a term concerned with the

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.
• The Graetz number is concerned with the
• Which of the following is directly concerned with the heat transfer?
• Which of the following is concerned with both heat and mass transfer?
• Which of the following is not concerned with the heat transfer?
• It is desired to concentrate a 20% salt solution (20 kg of salt in 100 kg of solution) to a 30% salt solution in an evaporator. Consider a feed of 300 kg/min at 30°C. The boiling point of the solution is 110°C, the latent heat of vaporisation is 2100 kJ/kg and the specific heat of the solution is 4 kJ/kg.K. The rate at which the heat has to be supplied in (kJ/min) to the evaporator is
• Heat flux increases with temperature drop beyond the Leiden frost point in the plot of heat flux vs. temperature drop for a boiling liquid, because
• Boiling point of a solution according to Duhring's rule is a linear function of the __________ of water.
• Terminal point temperature differences between fluids in case of a heat exchanger is termed as
• In a multiple effect evaporator, the effect of boiling point elevation is to