1 reply to this topic

[guoyinyanliner]

The centrifugal pump has a head of 50 m. The pump suction is at atmospheric pressure, and water is pumped into an atmospheric storage tank with a liquid level 3 m above the pump. What is the pressure in the pump discharge piping? Is it 150 kPa, or around 500 kPa?

[breizh]

Hi,

my understanding from your query: Head of 50 meters means to me:

Head discharge -Head suction equal 50 meters

Head discharge means head at the discharge of the pump

Head suction means at the suction of the pump.

The intersection between the pump curve and system curve is your operating point.

 

I've difficulty to understand where 150 Kpa or 500 Kpa are coming from.

 

Submit a sketch to avoid confusion. 

Share with us the pump curve and operating point.

Based on your query, you need to review basics about centrifugal pumps.

Attached a few documents to review.

Breizh

Attached Files

•  centpump basics.pdf   74.45KB   0 downloads
•  Centrifugal pump and fluid flow - practical calculations.pdf   1.44MB   3 downloads
•  understanding centrifugal pump.pdf   434.73KB   0 downloads
•  Understanding NPSH.pdf   823.84KB   0 downloads
•  Pumps hydraulics.pdf   1.37MB   1 downloads
•  KSB Centrifugal-Pumps-data.pdf   3.47MB   0 downloads
•  Suction piping design.pdf   397.47KB   2 downloads
•  Pump sketches.docx   141.91KB   1 downloads