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Country Discussion Topics
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TECHNICAL QUESTION
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JOE    Posted 05-30-2004 at 18:29:14       [Reply]  [No Email]
IF A SUBMERGED WELL PUMP IS SAY 500 FEET DOWN. THEN DUE TO THE WEIGHT OF WATER IN THE PIPE RISING FROM IT TO THE SURFACE THE PUMP MUST HAVE TO DEVELOP A VERY HIGH PRESSURE TO OVRCOME THIS WEIGHT AND PRODUCE A PRESSURE OF USUALLY 50 PSI IN THE PRESSURE TANK. HOW MUCH PRESSURE WOULD THE PUMP HAVE TO DEVELOP?


Sid    Posted 05-30-2004 at 19:28:16       [Reply]  [No Email]
It seems the pressure in the pipe would be the same as the pressure in the tank.


joe    Posted 05-31-2004 at 08:24:44       [Reply]  [No Email]
EACH FOOT OF WATER IN THE PIPE COMING UP 500 FT FROM THE PUMP EQUALS 1.4 PSI. HENCE THE PRESSURE IN THE PIPE DOWN AT THE PUMP WILL BE MUCH GREATER THAN THE PRESSURE SAY AT THE SURFACE. DUE TO THE WEIGHT OF THE WATER [HEAD PRESSURE] IN THE PIPE THE PRESSURE THE PUMP WOULD HAVE TO OVERCOME WOULD BE 500 X 1.4 = 700 PSI. IF THERE IS 50 PSI IN THE TANK THEN THIS MAKES THE LOAD HEAVIER FOR THE PUMP IT WOULD THEN HAVE TO PRODUCE A PRESSURE IN EXCESS OF 750PSI


Sid    Posted 05-30-2004 at 19:33:47       [Reply]  [No Email]
What is the water level in the well? The pump may be 500 feet deep, but if the water level in the well is say four hnudred the the pump only needs the power to push the water up 100 feet pluch create the fifty PSI in the tank.


JOE    Posted 05-31-2004 at 08:30:54       [Reply]  [No Email]
ASSUME THE WATER LEVEL IS ALSO 500 FEET DOWN FOR


Clod    Posted 05-30-2004 at 18:32:43       [Reply]  [No Email]
That is easy to sidestep because you did not specify the ID of the pipe that reaches up from the pump to the tank.I think it should be a part of the story.


Dave Munson    Posted 05-30-2004 at 19:28:43       [Reply]  [No Email]
Would not the ID of the pipe also effect the GPM? That is we would also have to write about ___ PSI at ___ GPM for a ___ id pipe 500' deep?


Clod    Posted 05-30-2004 at 19:46:35       [Reply]  [No Email]
The ID of the pipe has to do with the collum of the water which is affected by gravity and weighs a certian amount per CID in the pipe.But also the restricting walls of the pipe especially in a narrow collum.


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