Calculate Gauge Pressure On Suction Side of Pump
Calculate Gauge Pressure On Suction Side of Pump
(OP)
I am trying to determine the correct method for calculating the gauge pressure on a pressure transducer that will be installed on the suction side of a pump. This transducer will be used to set the water level in a tank that will be feeding the pump. There are several lines entering into the suction header of the pump, so I will have some friction and minor losses. I am trying to wrap my head around how to calculate what the pressure will be when the pump is running. I can easily calculate the static head (~20 feet). The suction losses at the design flow will be about 10 feet. I can easily determine what the gauge pressure will be when the pump is not running, but I can't figure out how to calculate the effect that the running pump will have on the pressure in the suction header. I know it shouldn't be too complicated to determine, but I can't seem to find any information in my textbooks that will guide me in the right direction.





RE: Calculate Gauge Pressure On Suction Side of Pump
RE: Calculate Gauge Pressure On Suction Side of Pump
Good luck,
Latexman
Technically, the glass is always full - 1/2 air and 1/2 water.
RE: Calculate Gauge Pressure On Suction Side of Pump
RE: Calculate Gauge Pressure On Suction Side of Pump
http://www.engineeringtoolbox.com/darcy-weisbach-e...
or the Equivalent Pipe Length Method:
http://www.engineeringtoolbox.com/equivalent-pipe-...
to calculate the pressure loss in the pipe.
The pressure setting for the transducer will be field set so you do not have to calculate a precise number. You should be able to either set the pressure in the field on the instrument, or set the pressure within the SCADA control system.
RE: Calculate Gauge Pressure On Suction Side of Pump
Good luck,
Latexman
Technically, the glass is always full - 1/2 air and 1/2 water.
RE: Calculate Gauge Pressure On Suction Side of Pump
RE: Calculate Gauge Pressure On Suction Side of Pump
It all seems an odd way to control a tank level to any degree of accuracy?
a sketch would be good.
My motto: Learn something new every day
Also: There's usually a good reason why everyone does it that way