PRV vs Orifice for fluctuating flow
PRV vs Orifice for fluctuating flow
(OP)
Hello all!
I have a fuel return pipe from a diesel engine that naturally have a fluctuating flow. Pressure pulses in the system was noted to be reduced when the PRV was replaced by an fixed restriction (orifice) but unfortunately it is a bit difficult to explain why.
Anybody have any good ideas on why this effect is experienced?
Best Regards,
Sai
I have a fuel return pipe from a diesel engine that naturally have a fluctuating flow. Pressure pulses in the system was noted to be reduced when the PRV was replaced by an fixed restriction (orifice) but unfortunately it is a bit difficult to explain why.
Anybody have any good ideas on why this effect is experienced?
Best Regards,
Sai





RE: PRV vs Orifice for fluctuating flow
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RE: PRV vs Orifice for fluctuating flow
I2I
RE: PRV vs Orifice for fluctuating flow
The PRV was of the cheap type, spring regulated with no active PID control.
I agree with you I2I, the spring was not able to respond quickly enough to the pulses, and therefore making the problem worse instead of helping to resolve it.
Br,
Sai
RE: PRV vs Orifice for fluctuating flow
On top of that, If the Use Demand is no longer required and inlet flow is left on, pressue after the orifice will comtinue to build to the same pressure as the Inlet.
Bud Trinkel, Fluid Power Consultant
HYDRA-PNEU CONSULTING