Motor Horsepower/Kw for a Pump
Motor Horsepower/Kw for a Pump
(OP)
The pump name plate is showing pump input 18.5 kw. What kw motor to be connected??? What if I connect it with 18.5 Kw motor.
The pump is for water service with details as - Q=100 m3/Hr and H=50 Mtr RPM 2940
The pump is for water service with details as - Q=100 m3/Hr and H=50 Mtr RPM 2940





RE: Motor Horsepower/Kw for a Pump
P(kW)=9.81*H(M)*V(m3/sec)*SG(1.0)
RE: Motor Horsepower/Kw for a Pump
The 18.5 kW represents an efficiency of>70%.
It also doesn't seem to include end of curve operation so an 18.5 kW motor is either right on the limit or could trip if you operate beyond 100 m3/hr
I would go for 25 kW motor myself.
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.
RE: Motor Horsepower/Kw for a Pump
Johnny Pellin
RE: Motor Horsepower/Kw for a Pump
It is a capital mistake to theorise before one has data. Insensibly one begins to twist facts to suit theories, instead of theories to suit facts. (Sherlock Holmes - A Scandal in Bohemia.)
RE: Motor Horsepower/Kw for a Pump
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.
RE: Motor Horsepower/Kw for a Pump
Correct, and that was my point. If the calculated theoretical value for pumping power is 13.625 kW, then after accounting for efficiency losses, 18.5 is probably OK.