Baffles are provided in a shell and tube heat exchanger to increase the turbulence and velocity of the shell side fluid. Which of the following shaped baffles does not fall in the category of transverse baffle ?

Related Mcqs:

1. The centre to centre distance between two consecutive baffles in a shell and tube heat exchanger is called the baffle pitch or baffle spacing, which is more than 1/5th the I.D. of the shell. Which of the following is not a function of the baffles ?

   A. To increase the residence time of shell side fluid
   B. To provide support to the tube bundle
   C. To reduce the induced vibration in the tubes
   D. To increase the tube side heat transfer co-efficient by inducing turbulence

2. 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

3. In a shell and tube heat exchanger, the overall heat transfer co-efficient is proportional to the tube side (volumetric flow rate)0.8. This is valid, only when the ratio of the tube side film resistance to the total resistance is almost equal to____________________?

   A. ∞
   B. 1
   C. 20.8
   D. 2

4. The shell side pressure drop in a shell and tube heat exchanger is maximum for _______________ baffle?

   A. Disk and ring
   B. Segmental
   C. Orifice
   D. Independent of the type of

5. In a shell and tube heat exchanger having square pitch, the shell side equivalent diameter is given by (where, P = pitch, d = outside diameter of the tube) ?

   A. 4(P2 – πd2/4)/πd
   B. (P2 – rd2/4)/rd
   C. 4P2/πd
   D. πd/4P2

6. If ‘D’ is the inside diameter of the shell of a shell and tube heat exchanger, then the baffle spacing is usually in the range of__________________?

   A. D/2 or minimum 2″ to 5D
   B. D/5 or minimum 2″ to 5D
   C. D/5 or minimum 2″ to D
   D. None of these

7. Minimum recommended baffle spacing in a shell and tube heat exchanger is about (where, D = shell diameter) ?

   A. 0.2 D
   B. 0.5 D
   C. 0.66 D
   D. 0.80 D

8. In a shell and tube heat exchanger, tube side _______________ of the mass velocity?

   A. Heat transfer co-efficient is proportional to 0.8th power
   B. Pressure drop is proportional to the square
   C. Both A. & B.
   D. Neither A. nor B.

9. In a heat exchanger, shell side fluid velocity can be changed by changing the tube _______________________?

   A. Layout
   B. Pitch
   C. Both A. & B.
   D. Neither A. nor B.

10. In a multipass shell and tube heat exchanger, the shell side cross flow area does not depend upon______________________?

    A. Baffle spacing
    B. Clearance
    C. Pitch
    D. None of these