Heat Transfer Operations Practice Test 10

1. What is the name of the following condenser setup?

Spray Condenser

Sparged tube column

Baffled Column

Tube side Condenser

2. What is the expression for heat transfer coefficient for a horizontally placed condenser?

h_HOR=0.725\([\frac{K^3 p^2 g h_{fg}}{μx(T_{sat} - T_L)}]^{0.25}\)

h_HOR=0.943\([\frac{K^3 p^2 g h_{fg}}{μx(T_{sat} - T_L)}]^{0.25}\)

h_HOR=0.723\([\frac{K^3 p^2 g h_{fg}}{μx(T_{sat} - T_L)}]^{0.25}\)

h_HOR=0.743\([\frac{K^3 p^2 g h_{fg}}{μx(T_{sat} - T_L)}]^{0.25}\)

3. In the double pipe setup of the water-type condenser, the cold water flows in the ___________

Shell

Annulus

Inner Tube

Jacket

4. The size of the baffle cut is generally chosen such that the vapour velocity in the tube is _________ that in the overlap area between the baffle discs.

Very less than

Equal to

Less than

More than

5. _______________ baffles may be specified to achieve reduced pressure drop.

Double segmental

Single segmental

Quadruple segmental

Triple segmental

6. Which one of the following is the correct labelling of the temperature-enthalpy relationship curve of a mixture?

heat-transfer-operations-questions-answers-temperature-enthalpy-diagrams-q9d

heat-transfer-operations-questions-answers-temperature-enthalpy-diagrams-q9b

heat-transfer-operations-questions-answers-temperature-enthalpy-diagrams-q9a

heat-transfer-operations-questions-answers-temperature-enthalpy-diagrams-q9c

7. Which of the following direct contact condenser has the maximum pressure drop as compared to other condensers?

Packed Column

Tray Column

Baffled Column

Spray Column

8. As thermal conductivity kF increases, the heat transfer coefficient ________

Jumps to a high value

Decreases

Increases

Remains same

9. Which one of the following condenser matches the given description – ‘The condenser has a shell containing tubes within which the coolant liquid usually flows. The flow on the shell-side is so designed that the vapour gas mainly flows in the cross-flow direction with respect to the tubes’?

Cross-flow

Mixed flow

Counter flow

Co-current Flow

10. What is the name of the following condenser setup?

Baffled Column

Spray Condenser

Sparged tube column

Tube side Condenser