jkate
Mechanical
- Nov 5, 2011
- 66
Hoping for a little help. I have a system that will be using 1 pump that will pump to two branches. In this system, we’re pumping a total of 42gpm of water, 40 gpm flows through 2" SCH80 pipe to a scrubbing tower. There is a tee off of the 2" pipe that flows 2 gpm through 1" SCH80 pipe that goes to a waste tank. See attached sketch. Some information:
SUCTION SIDE
Static head on suction side = 2ft.
5ft of 2" SCH80 pipe
(3) 90elbows, (1) flow thru run tee, (1) ball valve
DISCHARGE SIDE
40GPM BRANCH
2GPM BRANCH
I'm having a hard time calculating what the TDH for the pump in this system need to be due to the two different flows in two different size pipes,so I can provide this information to a pump supplier.
Any help would be greatly appreciated.
SUCTION SIDE
Static head on suction side = 2ft.
5ft of 2" SCH80 pipe
(3) 90elbows, (1) flow thru run tee, (1) ball valve
DISCHARGE SIDE
40GPM BRANCH
Height of discharge point = 17ft
25ft of 2" SCH80 pipe
(5) 90elbow, (4) 45elbow, (2) flow thru run tee, (1) flow thru branch tee, (1) check valve, (1) ball valve
flow passes through a heat exchanger with pressure drop of 2 psi
at discharge point is a spray nozzle that requires 7psi
25ft of 2" SCH80 pipe
(5) 90elbow, (4) 45elbow, (2) flow thru run tee, (1) flow thru branch tee, (1) check valve, (1) ball valve
flow passes through a heat exchanger with pressure drop of 2 psi
at discharge point is a spray nozzle that requires 7psi
2GPM BRANCH
elevation of branch off of 2" pipe from centerline of pump = 4ft
Height of discharge point from centerline of pump = 22ft
322ft of 1" SCH80 pipe
(6) 90elbow, (1) flow thru branch tee
Height of discharge point from centerline of pump = 22ft
322ft of 1" SCH80 pipe
(6) 90elbow, (1) flow thru branch tee
I'm having a hard time calculating what the TDH for the pump in this system need to be due to the two different flows in two different size pipes,so I can provide this information to a pump supplier.
Any help would be greatly appreciated.