Seeking information on the pressure relationship before and after a flow-limiting orifice plate?
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I saw two different statements regarding the flow restriction orifice plate, and they seem contradictory. Could you please give some guidance? 1. Selection of gas: To avoid choked flow in pipelines using flow control orifice plates, the pressure behind the orifice plate (P2) must not be less than 55% of the pressure before the plate (P1), that is, P2 ≥ 0.55P1. Therefore, when P2
The second point applies specifically to flow-limiting orifice plates! That is, a pressure downstream of the orifice plate must be lower than the critical pressure in order for flow limitation to occur! The figure of 0.5 is not accurate; the critical flow rate pressure ratio is generally around 0.55! I don’t understand what is meant by \"choking flow\" either; I’d like to know more about it. Is this phenomenon observed with pressure-reducing orifice plates but not with flow-limiting ones? Please advise me! :)