Heat Transfer Operations Practice Test 5

1. Active particles which are quite large sternly repel the emulsion phase and hence the mass transfer rate augments with the ________ of the inert bed material size and _________ with increase of its active particle’s diameter.

2. Which one of the following is the governing factor for evaporation to take place?

3. Which one of the following is a Long tube evaporator?

4. What is the direction of flow in the centre tubes and wall-side tubes of a long tube falling film evaporator?

5. The residence time in climbing/falling film plate evaporator is usually tried to keep low.

6. How does the fluid in climbing film evaporator rise in the tubes?

7. In Fluidised bed the particle size are___________

8. Which one of the following description best suits the definition of slip-stick flow bed?

9. Where is the heat supplied to an evaporator actually go?

10. What is amount of heat that needs to be supplied in order to evaporate 10kg of water from a feed of 50kg at a temperature of 25℃ to a final temperature of 100℃?
Latent heat of vaporization of water = 2,260 kJ/kg
Specific heat capacity = 6 KJ/Kg K