1. DIFFUSER
OF A CENTRIFUGAL PUMP
Amritansh Manthapurwar
III-SEM, SEC-A, Roll No- 09
Mechanical Dept.

2. INTRODUCTION
❖ Centrifugal compressors, sometimes called
impeller compressors or radial compressors,
are a subclass of dynamic axisymmetric
work-absorbing turbomachinery.
❖ They achieve pressure rise by adding energy to the
continuous flow of fluid through the rotor/impeller.
❖ The static pressure rise in the impeller may roughly
equal the rise in the diffuser.

3. PART - CENTRIFUGAL COMPRESSOR
FIGURE: CENTRIFUGAL COMPRESSOR

4. DIFFUSER - CONSTRUCTION
❖ A diffuser is a set of stationary vanes that surround the impeller.
❖ The diffuser vanes are designed in a manner that the liquid exiting the impeller will
encounter an ever increasing flow area as it passes through the diffuser.

5. WORKING
❖ The purpose of the diffuser is to increase the efficiency of the centrifugal pump by allowing a
more gradual expansion and less turbulent area for the liquid to reduce in velocity.
❖ The increase in flow area causes reduction in flow velocity, converting kinetic energy into flow
pressure.

6. WORKING ANIMATION
❖ https://www.youtube.com/watch?v=hPHcNY8VMdQ
❖ https://www.youtube.com/watch?v=tcjkyN4UR-k

7. THANK YOU