In order to maintain conservation of mass as this fluid fall proceeds in a falling film evaporator, the downward vapour velocity ___________

In order to maintain conservation of mass as this fluid fall proceeds in a falling film evaporator, the downward vapour velocity ___________ Correct Answer Increases

Maintaining the mass conservation falling process proceeds with the downward vapour velocity increases and also increasing the shear force acting on the liquid film as well as the velocity. This result in the turbulent flow increase which allows very high heat transfer coefficients.
Bissoy MCQ

Related Questions

Consider the following statements and choose the correct answer:
1. A direct proportionality exists between vapour pressure and the concentration of water vapour in the atmosphere
2. Relative humidity is an expression of the ratio of the actual vapour pressure of the atmosphere when saturated at the same temperature
3. A rise or fall in temperature with no change in vapour pressure will cause a drop or rise, respectively, in relative humidity
4. A rise or fall in vapour pressure with no change in temperature will be accompanied by a rise or fall, respectively, in relative humidity
In a rising film evaporator, the temperature difference need not be as high as that in a falling film evaporator.
If the compound vapour compression system is working under the load on the evaporator of 15 TR, the enthalpies corresponding to the evaporator are 1400 and 400 kJ/kg respectively. What is the value of the mass flow rate through the evaporator?
What is the monoisotopic and average mass of valine? Given data: Mass of the most abundant isotope of Carbon (C°)=12.0000, Mass of most abundant isotope of Hydrogen (H°)=1.0078, Mass of most abundant isotope of Oxygen (O°)=15.9949, Mass of most abundant isotope of Nitrogen (N°)=14.0031, The average mass of Carbon (C)=12.011, The average mass of Hydrogen (H)=1.008, The average mass of Oxygen (O)=15.999, The average mass of Nitrogen (N)=14.007.
The applications of falling film and rising film are more or less same, but if industries have the cost capital, they go for falling film, why?
According to the conservation law, “Net mass flow across the fluid element is equal to the rate of change of mass inside the element”. But, stating the final equation, “Net mass flow across the fluid element + the rate of change of mass inside the element = 0”. Why is the operation not subtraction?
The fluids in falling tube evaporator usually form a film inside the tubes but there are applications when the fluid forms a film outside the tube and falls subsequently.
Statements : All film stars are playback singers. All film directors are film stars.

Conclusions :
I. All film directors are playback singers.
II. Some film stars are film directors.
What is the ratio of the mass of refrigerant flowing through condenser and mass of refrigerant flowing through the evaporator, i.e., m2 / m1? If m1 = mass of refrigerant passing through the evaporator m2 = mass of refrigerant passing through the condenser
Bernoulli's equation for fluid flow is derived following certain assumptions. Out of the assumptions listed below, which set of assumptions is used in derivation of Bernoulli's equation?
1. Fluid flow is frictionless & irrotational
2. Fluid flow is steady
3. Fluid flow is uniform & turbulent
4. Fluid is compressible
5. Fluid is incompressible