Orifice with critical pressure drop
Orifice with critical pressure drop
(OP)
I am surching for methods to calculate flowrate for hotwater through an orifice with critical pressure drop:
30 bar(e) 150 ºC - 1 bar (e) 110 ºC.
LB
30 bar(e) 150 ºC - 1 bar (e) 110 ºC.
LB





RE: Orifice with critical pressure drop
Seems like that is the info you're looking for.
RE: Orifice with critical pressure drop
For two phase homogeneoujs flow, the max flow can be higher than that normally calcualted for equilibriulm isentropic conditions. It is a choked flow in a metastable state. Under that flow condition, the fluid does not flash as normally expected and typically higher flows occur.
A good example is subcooled flow thru a trap. Flows of two phase steam water have been measured to be higher than that for equilibrium flow.
Touch base with a trap vendor to get a feel for hot water flow thru an orifice. Also search for some old ASME papers on the subject.