Discussion
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- Question
In a shell and tube heat exchanger, the 'tube pitch' is defined as the
Options- A. O.D. of the tube for square pitch.
- B. shortest distance between two adj acent tube holes.
- C. shortest centre to centre distance between adjacent tubes.
- D. none of these.
- Correct Answer
- shortest centre to centre distance between adjacent tubes.
- 1. What is the value of 'q' for saturated liquid feed to a distillation column?
Options- A. 0
- B. <1
- C. 1
- D. >1 Discuss
- 2. Wall thickness of schedule 40 pipe as compared to that of schedule 80 pipe is
Options- A. more
- B. less
- C. same
- D. cither (a) or (b); depends upon the I.D. of the pipe Discuss
- 3. Two iron pipes of the same nominal diameter but different schedule numbers will have the same
Options- A. inside diameter
- B. outside diameter
- C. wall thickness
- D. none of these Discuss
- 4. In chemical process equipments, the conical bottom heads used, usually has an apex angle of
Options- A. 20°
- B. 40°
- C. 60°
- D. 80° Discuss
- 5. Shell side heat transfer co-efficient in case of square pitch as compared to the triangular pitch under similar condition of fluid flow and tube size is
Options- A. more
- B. same
- C. less
- D. twice Discuss
- 6. With increase in the number of shell passes, the value of FT
Options- A. increases
- B. decreases
- C. remains same
- D. remains same, only if the number of tube passes does not change. Discuss
- 7. Which of the following material is seldom used for pressure vessel construction?
Options- A. Rimmed still
- B. Mild steel
- C. Killed steel
- D. Semi-killed steel Discuss
- 8. Liquid/petroleum fuel storage tanks are built underground (as in case of petrol pumps), when the storage capacity is less than __________ kilolitres.
Options- A. 20
- B. 30
- C. 45
- D. 85 Discuss
- 9. Pick out the correct statement.
Options- A. When highly corrosive fluids are to be handled, the plate towers prove to be cheaper and easier to construct than packed tower.
- B. Packed towers are generally preferred over plate towers, if the liquids have a foaming tendency.
- C. The pressure drop through the packed towers is generally more than the pressure drop through plate towers designed for same duty.
- D. none of these. Discuss
- 10. Triangular pitch tube layout as compared to square pitch in a shell and tube heat exchanger
Options- A. permits the use of less tubes in a given shell diameter.
- B. facilitates comparatively easier external cleaning because of large clearance.
- C. permits the use of more tubes in a given shell diameter.
- D. both (b) and (c). Discuss
Process Equipment and Plant Design problems
Search Results
Correct Answer: 1
Correct Answer: less
Correct Answer: inside diameter
Correct Answer: 60°
Correct Answer: less
Correct Answer: increases
Correct Answer: Rimmed still
Correct Answer: 45
Correct Answer: Packed towers are generally preferred over plate towers, if the liquids have a foaming tendency.
Correct Answer: permits the use of more tubes in a given shell diameter.
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