Process Equipment And Plant Design - Practice Test

[#141] Pick out the wrong statement about routing of fluids in a shell and tube heat exchanger.

(A) The corrosive and fouling fluid should be preferably routed through the tubes

(B) The viscous fluid should be routed through the shell side

(C) Lower flow rate fluid should be routed through the shell side

(D) Higher pressure fluid stream should be routed through the shell side

Correct Answer

(D) Higher pressure fluid stream should be routed through the shell side

[#142] Pick out the wrong statement pertaining to a shell and tube heat exchanger.

(A) The minimum value of baffle spacing is 50 mm

(B) The maximum value of baffle spacing is equal to the I.D. of the shell

(C) The maximum unsupported tube span is generally about 75 times tube diameter, but is reduced to about 60 times for aluminium, copper & alloys of these

(D) Disk and doughnut baffle is the most commonly used baffle

Correct Answer

(D) Disk and doughnut baffle is the most commonly used baffle

[#143] Pick out the wrong statement pertaining to shell and tube heat exchanger.

(A) Clearance between shell & baffles and between tube & baffles should be minimum to avoid by-passing of the fluid, but it should be enough to permit the removal of tube bundle

(B) Baffles are supported independently of the tubes by tie rods and positioned by spacers

(C) Tie rods are fixed at one end in the tube sheet by making blind holes and the minimum number of tie rods is 4 with at least 10 mm diameter

(D) Bracket supports are used for horizontal shell, while saddle support is used for vertical shell

Correct Answer

(D) Bracket supports are used for horizontal shell, while saddle support is used for vertical shell

[#144] In case of a shell and tube heat exchanger, the effect of L/D on inside film heat transfer co-efficient (hi) vanishes after a Reynold number of

(A) 1000

(B) 3000

(C) 5000

(D) 10000

Correct Answer

(D) 10000

[#145] In a multipass shell and tube heat exchanger, the baffles on shell side is primarily provided for

(A) Reducing scale deposition

(B) Increasing pressure drop

(C) Fixing the tubes

(D) Creating turbulence

Correct Answer

(D) Creating turbulence

Process Equipment And Plant Design - Study Mode

[#141] Pick out the wrong statement about routing of fluids in a shell and tube heat exchanger.

Correct Answer

[#142] Pick out the wrong statement pertaining to a shell and tube heat exchanger.

Correct Answer

[#143] Pick out the wrong statement pertaining to shell and tube heat exchanger.

Correct Answer

[#144] In case of a shell and tube heat exchanger, the effect of L/D on inside film heat transfer co-efficient (hi) vanishes after a Reynold number of

Correct Answer

[#145] In a multipass shell and tube heat exchanger, the baffles on shell side is primarily provided for

Correct Answer