2 replies to this topic

[Art Montemayor]

Andaleeb:

Of course there is a relationship. Just think about what you mentioned in your query. If a pump increases its RPM (ability to move more fluid per unit of time) it has to increase the amount of work done on the fluid (per unit of time). And if you have been studying and know the definition of "power", then you will find out that it means exactly the amount of work done per unit of time. Therefore, the more the rpm, the more the power required to sustain that same rpm.

The relationship is different for different types of pumps -- this is obvious when you realize that different type of pumps work under different principles and follow different physical laws and yield different efficiencies.

To explain it any further requires that you know as much about pumps, their types, and the mathematical relationships that describe their operation as I do. Otherwise, I would be speaking over your head. Therefore, you have to master all the basic physics and engineering material related to pumps and how they work and perform.

[joerd]

And read http://www.gouldspum...f_fullindex.stm (thank you Art for providing this link in another thread).