2006-12-22 03:19:51 · 10 answers · asked by beto 1 in Science & Mathematics ➔ Engineering
OK.. let me add a couple more details. The problem that I am having is that I this water tank that is about 10 ft high and a 1/3H.P. pump was installed to pump the water out to a basemant. The pump was installed about 2.5 ft above the lowest level from the tank. The pump pumps the water to a 1/2" pipe that goes about 9 ft high before is sent to the basement. The only thing is that no water is coming out. So to me the pump was not size correctly or the pipe diameter is too small. What could be the problem here?
2006-12-23 12:37:12 · update #1
Is it a flow through pipe by gravity/ difference of elevation ?
Is it a flow through pipe by pumping ?
The flow through pipe is a function of,
flow is laminar or turbulent?
its density and viscocity,
roughness factor of pipe ID,
head lost due to friction,
velocity.
You can use following equation for calculation:
Hf = f*l*v^2/2*g*d
pressure=sp. gr.*head
flow rate=area*velocity
velocity=sqrt(2*g*h)
g=gravitational constant.
d=diameter of a pipe
f=friction factor
Hf=head lost due to friction.
l=length of a pipe
v=velocity.
throttle the discharge valve and check whether the water is comming or not.
Is there any NRV in DISCHARGE line ? if so then what is the type?
RPM?
2006-12-22 04:14:16 · answer #1 · answered by Anonymous · 3⤊ 0⤋
That depends on some things that you haven't told us. The flow depends on the water pressure. The limiting factor is then the pressure that the pipe can withstand before bursting. So an half inch garden hose will be able to deliver considerably less than an half inch gun barrel.
Maybe the answer needs to be an equation in terms of the maximum rated pressure handling of the pipe?
How fancy does the answer need to be? If it is just to water cattle then there are rough calculations you will find on Google. If you need something fancier taking into account the friction of the pipe you can use standard formulae for that or use an online calculator.
2006-12-22 12:40:36 · answer #2 · answered by Anonymous · 0⤊ 2⤋
Niether, your pump is not primed. Try putting on a check vale at the bottom of the in take and back fill the line all the way though the pump. Then turn the pump on.
2006-12-22 11:48:55 · answer #3 · answered by south of france 4 · 1⤊ 2⤋
Pi x 1/16 x speed of water flow (inches/second) = cubic inches of water per second.
Or, Pi x 0.63 x 0.63 x water flow (cm/second) = mL of water per second
2006-12-22 11:25:58 · answer #4 · answered by Anonymous · 0⤊ 2⤋
You must first take into consideration the friction loss and other such losses
2006-12-22 15:37:29 · answer #5 · answered by rraudioandsports.com 1 · 0⤊ 2⤋
2.2 Gallons per minute if velocity is 3.0 inches per second
2.64 Gallons per minute if velocity is 3.5 inches per second
2006-12-22 11:31:16 · answer #6 · answered by sighspy 3 · 0⤊ 2⤋
http://cahe.nmsu.edu/pubs/_a/a-104.html
2006-12-22 18:53:28 · answer #7 · answered by tronary 7 · 0⤊ 2⤋
depends on alignment of pipe
(Horizontal? any slope.etc)
2006-12-22 12:00:06 · answer #8 · answered by Anonymous · 0⤊ 2⤋
gravity fed
or
pump?
2006-12-22 11:23:16 · answer #9 · answered by gussie r 3 · 0⤊ 2⤋
all depends on psi
2006-12-23 12:20:33 · answer #10 · answered by Golly Geewiz 4 · 0⤊ 2⤋