Chemical Engineering - Fluid Mechanics - Discussion

Other functions of an air vessel :

1. Reduces the possibility of separation and cavitation.

2. Allows pump to run at high speed.

3. Suction head can be increased by increasing the length of pipe below air vessel.

4. Large amount of power is saved due to low acceleration head.

5. Uniform discharge.

Air vessels are used in a reciprocating pump to reduce pulsation in the discharge flow i.e. uniform discharge!

Air vessel provided in a suction reciprocating comp. For a saves the pump from the danger of cavitation. & nitrogen vessel dempaner in disch. The line has smoothened the flow by avoiding pulsations.

Air vessel provide for discharge fluctuation in reciprocating pump.

As I think, A is the right answer.

I think A is the correct answer.

Air vessel provided for avoid feed rate fluctuations.

Yes, A is the right option.

The air vessel, in a reciprocating pump, is a cast iron closed chamber having an opening at its base. These are fitted to the suction pipe and delivery pipe close to the cylinder of the pump.

The vessels are used for the following purposes:

(a) To get continuous supply of liquid at a uniform rate.

(b) To save the power required to drive the pump. This is due to the fact that by using air vessels, the acceleration and friction heads are reduced. Thus the work is also reduced.

The vessels are used to get continuous supply of liquid at a uniform rate and to save the power required to drive the pump.