Home / Chemical Engineering / Process Equipment and Plant Design :: Section 7

Chemical Engineering :: Process Equipment and Plant Design

  1. In a multipass shell and tube heat exchanger, the baffles on shell side is primarily provided for

  2. A.
    reducing scale deposition.
    B.
    increasing pressure drop.
    C.
    fixing the tubes.
    D.
    creating turbulence.

    View Answer

    Workspace

    Discuss Discuss in Forum


  3. For turbine agitator, the impeller diameter is about

  4. A.
    0.3 to 0.5 d
    B.
    0.1 to 0.2 d
    C.
    0.65 to 0.85 d
    D.
    0.95 d

    View Answer

    Workspace

    Discuss Discuss in Forum


  5. In a shell and tube heat exchanger having triangular pitch, the shell side equivalent diameter is given by

  6. View Answer

    Workspace

    Discuss Discuss in Forum


  7. If a single tube pass heat exchanger is converted to two passes; for the same flow rate, the pressure drop per unit length in tube side will __________ times.

  8. A.
    increase by 1.8
    B.
    decrease by 22
    C.
    increase by 21.6
    D.
    none of these

    View Answer

    Workspace

    Discuss Discuss in Forum


  9. Pick out the wrong statement.

  10. A.
    An air cooled finned pipe is diagram-matically represented by
    B.
    A heat exchanger is diagrammatically represented by
    C.
    A 90° welded elbow is diagrammatically represented by
    D.
    A pipe still heater is diagrammatically represented by

    View Answer

    Workspace

    Discuss Discuss in Forum


  11. Pick out the wrong statement pertaining to the design of a long tube vertical evaporator.

  12. A.
    Tube dia is 3-6 cms, while tube length in 3-6 metres.
    B.
    Steam is fed to the shell, whereas the liquor is filled inside the tube.
    C.
    Liquor level is maintained at l/3rd to 1/2 of the height of the tube.
    D.
    none of these.

    View Answer

    Workspace

    Discuss Discuss in Forum


  13. Which of the following is the most common type of baffle used in industrial shell and tube heat exchanger ?

  14. A.
    75% cut segmental baffle.
    B.
    25% cut segmental baffle.
    C.
    Orifice baffle.
    D.
    Disk and doughnut baffle.

    View Answer

    Workspace

    Discuss Discuss in Forum


  15. What is the minimum recommended ligament for square pitch arrangement in case of heat exchangers ?

  16. A.
    6.5 cms
    B.
    6.5 mm
    C.
    Equal to tube I.D
    D.
    Equal to tube O.D

    View Answer

    Workspace

    Discuss Discuss in Forum


  17. Pick out the correct statement

  18. A.
    Centre to centre distance between two consecutives rivets in a row is called the pitch.
    B.
    A rivetted joint made in overlapping plates is called butt joint.
    C.
    Hole size drilled in rivetted plates is less than the actual size of the rivet.
    D.
    none of these.

    View Answer

    Workspace

    Discuss Discuss in Forum


  19. Safety valves are provided in chemical equipments to guard against excessive

  20. A.
    temperature
    B.
    pressure/pressure fluctuation
    C.
    turbulence
    D.
    noise

    View Answer

    Workspace

    Discuss Discuss in Forum