Restricted orifice
Restricted orifice
(OP)
well we have a system with pump and multi-branches , one branch has flowrate of 17 and pressure of 4 bars ,, we need to decrease the pressure to 1 bar so we use a restriction orifice , now does the flow rate will be affected ? if the application at the end of the branch needs the flowrate of 17 exactly





RE: Restricted orifice
Yes, the flow rate will be affected when you insert an orifice.
Is a flow regulator available in an appropriate size?
If not, in the general case, you need to model the entire system, first so that the model mirrors all of the important behaviors of the current real system, then apply changes to the model to get the desired behaviors, and hope that the model is actually good enough to predict the real system's new behaviors.
Mike Halloran
Pembroke Pines, FL, USA
RE: Restricted orifice
RE: Restricted orifice
Change the pressure you will change the flow.
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.
RE: Restricted orifice
RE: Restricted orifice
You have a point where you have a requirement of xx l/s @ yy bar (only stating flow is incomplete information). If you are supplying to a sprinkler, an orifice, a heat exchanger, or a hose, pressure is linked to flow.
Then you have to add losses up to your manifold or fluid source. If you restrict by an orifice, flow and pressure will change both.
Changing one branch will change the whole demand curve and the flow-split-proportion.
RE: Restricted orifice
So "so I need to reduce the pressure only on this branch without affecting the flow rate " is rarely possible in practice.
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.
RE: Restricted orifice
RE: Restricted orifice
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.