Suction Under Vacuum

attn : Mr Ang

Under such pumping condition , workout the NPSH available in the system and get pump with
lower NPSH required .It should be lower than NPSH avaialable otherwise the pump is not going to work

For this application ,it is under 10 m bar which is almost 98 % vacuum .
therefore 10 meter x 98% is = 9.8 meter
NPSHA = 10 METER - (scution pressure + vapour pressure ) = 0.2 M
NPSH AVAILABLE IS 0.2 METER
Vacuum ejector is mostly use for this particluar installation(palm oil refinery )
The suction head loss and vapour pressure for above is not taken into consideration
as it is negligible