Notificação do usuário: "Pump cannot deliver flow or head"
Aplica-se a
Produto(s):
WaterGEMS, WaterCAD, HAMMER, SewerCAD, SewerGEMS, CivilStorm
Versão(ões):
CONNECT Edition, V8i
Área:
Cálculos
Autor Original:
Terry Foster, Grupo de Suporte Técnico da Bentley
Problema…
Fixed Pump flow for 12 hours
hello everyone,
I want to make the pumps flow at 24 Lps for 12 hours and the tank will provide the flow in the other 12 hours
the problem I found in watergems that I couldn't fix the flow at 24Lps for 12 hours, the flow rises at 36Lps and that causes…
Pump selection for a closed system
Product(s):
WaterCAD, WaterGEMS
Version(s):
10.XX.XX.XX, 08.11.XX.XX
Area:
Modeling
Problem
When designing a closed system with only demands downstream (no storage), how can the program help me select a pump? The system head…
Water drawn through pump after shut down?
Hello,
I am modeling a wastewater forcemain with a sudden power failure and I noticed that the flows after a pump shutdown are stepped. The flow decreases at the pump, but as the transient wave moves away from the pump and negative pressures are experienced…
Why is the “lag pump count” field not available when selecting Fixed Flow as the “VSPB Type”?
Product(s):
WaterGEMS, WaterCAD, HAMMER
Version(s):
08.11.XX.XX and 10.00.XX.XX
Area:
Layout and Data Input
Problem
Why is the “lag pump count” field not available when selecting Target Flow as the “VSPB Type”?
How can the…
Extreme and Inaccurate initial flow (at time t=0)
Product(s):
SewerGEMS,CivilStorm,SewerCAD
Version(s):
08.11.XX.XX and later (features vary)
Area:
Calculations
Problem
After computing a model, there are inaccurate flows and velocities being reported. For example…
Why do I need to enter a "nominal head" and "nominal flow" when modeling a pump startup event?
Product(s):
HAMMER
Version(s):
08.11.XX.XX and 10.00.XX.XX
Area:
Layout and Data Input
Problem
Why do I need to enter a "nominal head" and "nominal flow" when modeling a pump startup event?
Solution
When modeling a pump…
"Reverse initial flow through pump or turbine. Change the flows in the pipes leading to this pump or turbine."
Applies To
Product(s):
HAMMER
Version(s):
CONNECT Edition, V8i
Area:
Analysis/Computation
Original Author:
Jesse Dringoli, Bentley Technical Support Group
Problem
How do I solve the following…
User Notification: "Pump cannot deliver flow or head"
Applies To
Product(s):
WaterGEMS, WaterCAD, HAMMER, SewerCAD, SewerGEMS, CivilStorm
Version(s):
CONNECT Edition, V8i
Area:
Calculations
Original Author:
Terry Foster, Bentley Technical Support Group
Problem…
User notification "Pump exceeds the maximum operating point specified for the pump curve"
Applies To
Product(s):
WaterGEMS, HAMMER, WaterCAD
Version(s):
08.11.XX.XX, 10.XX.XX.XX
Original Author:
Mark Pachlhofer, Bentley Technical Support Group
Problem
My pumps are operating at a much higher…
Why can't I reach my desired flow in my pump model
Hello
I have designed a well pump in watergems. I got the error messages of negative pressure and exceeding the maximum operating point specified for the pump curve. I was able to solve these problems by changing my pumps, correcting my pump curves…