Process Equipment and Plant Design MCQs

equal to

half

one fourth

three fourth

S1/S2

S1.S2

S2/S1

1/S1.S2

if its diameter is less than 15-20metres.

if its diameter is more than 50 meters.

if the thickness of the roof is more than that of the cylindrical shell.

irrespective of its diameter.

10

10

20

20

0

<1

1

>1

decreases upwards.

increases upwards.

remains same throughout.

may decrease or increase upwards depending upon whether vacuum or positive pressure would be maintained inside the shell.

yellow

black

blue

red

1.1 to 1.5

1.6 to 2

2.2 to 2.6

2.7 to 3

results in higher shell side pressure drop.

can accomodate less number of tubes for a given shell diameter.

facilitates easier shell side cleaning; hence is more suitable for handling high dirt factor shell side fluid.

creates relatively lower turbulence on the shell side resulting in lower shell side heat transfer co-efficient.

2.5 metres

6 metres

10 metres

0.5 metre