Heat Transfer Oil Pump

Flow ~~2x ~~560 m³/h
Head ~~4x ~~ 140 m
Power ~~8x ~~ 296 kW

Your combination won't work. See pump affinity laws.

Thank you I will see the pump affinity laws.

That ignores the contribution made by the characteristic curve of the system into which the pump is delivering towards different operating point. The forum doesn't know where the top pressure limit of the piping system is, for example.

Dear Mr. combined

It is very simple since,

The Capacity will be proportional to Speed, i.e. C α N

The Pressure (or Head) is proportional to the Square of the Speed, i.e. H α N^2

The Power demand is proportional to the cube of Speed. P α N^3

If you increase the speed to 2900 RPM the ratio of Speed Increase will be 2900/1440 = 2.01

Hence Head will increase to ((2.01)^2) x35 = 4.0557 x 35 = 145.911 Metres Head.

The Power demand will be ((2.01)^3)x 37 = 330.46 KW and NOT 70 KW.

DHAYANANDHAN.S

The <...We...> will find that the pump trips on overload, so the flow and pressure will both be zero.

Looking forward to some sensible suggestions as to why the <...We....> would ever want to do this; it is nonsense!

As a rule of thumb:

Always replace an existing engine/motor/pump with a similar one with the same specification (power demand/output and so forth).

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You might get away with a dissimilar replacement if the following parameters are matched:

1. Size (If it bolts to the same base plate it should be good)
2. Color (If old part was blue the new one has to be blue. Watch out for discoloration.
3. Sound (if the sound of the running items are similar it should be good to use
4. If old part turned left as seen by looking from the right the new part has to turn right by looking from the left. Carefull with the direction you do the looking from. Keep out of rotating parts please,
5. If the new item comes from the same manufacturer you can just use it. There is no need to confirm with the manufacturer as you can assume all the testing has been done already
6. All none OEM brands that say they fit will be good to use. Make sure you ask somebody else to check the specifications because it takes time and is cumbersome but there is no need to trouble yourself.

The operating point on the pump characteristic curve is the place where the pump characteristic curve and the system characteristic curve intersect.

So it is not possible to give an accurate answer to the question as stated, as the pressure/flow characteristic curve of the system onto which the pump is attached is not known to the forum.

Another possibility is catastrophic failure of the pipework, resulting in loss of the fluid, environmental issues, loss off production at the facility, and a sudden, catastrophic and urgent need to obtain employment elsewhere.