Obviously I have a lack of knowledge.
So here is my modest opinion:
(1) P=m'*g*h= (2) V'*ro*g*h= (3) p*V' (without efficiency)
P power W
mass flow kg/s
g gravity m/s^2
h height m
V' volume flow m^3/s
ro density kg/m^3
p pressure Pa
Probably I overlooked something when interpreting the above...
OK, silly me. In my region we use the term flow for volume flow so this is a source of misunderstanding.
So we can have the same height for the same mass flow for 2 diff. fluids, but not for the same volume flow of those 2...
Didn't pay enough attention, THx everyone
I don´t understand 1st statement. Isn´t it in collison with the 2nd one?
In equation you have SC, for mercury 15x greater then for water. What does that mean, that your EM and pump will deliver 15x power when run on mercury instead of water?
This was resume of one older thread:
"So bottom line, this pump is going to put out a certain head. And it will put out this same head regardless of the fluid. If the fluid is saltwater, the pressure will just be greater than if the fluid is gasoline - but the head will be the same. And on...
Hi everyone from Croatia.
This is my 1st post so I hope that dumb questions are allowed for newbies :)
1. Centrifugal pumps are turn on with closed discharge valves - why?
I have 2 potential explanations:
- if it is a point of lowest engaged power, especialy having in mind that starting...
