May 26, 2009 #1 Rpsfinest Electrical Dec 8, 2006 29 I am trying to calculate the steam flow through a fixed orifice of 2.125" diameter in a 3" pipe with an inlet pressure of 100 psig... Can anyone help?
I am trying to calculate the steam flow through a fixed orifice of 2.125" diameter in a 3" pipe with an inlet pressure of 100 psig... Can anyone help?
May 26, 2009 #2 TBP Mechanical Mar 28, 2001 1,151 You'll need the downstream pressure. Once you know the pressure drop, and the orifice size, it's just plug the numbers into the formula. Upvote 0 Downvote
You'll need the downstream pressure. Once you know the pressure drop, and the orifice size, it's just plug the numbers into the formula.
May 26, 2009 #3 rmw Mechanical Feb 6, 2002 5,724 If by outlet pressure you are referring to the downstream pressure, you will need the upstream pressure and proceed as TBP recommends. rmw Upvote 0 Downvote
If by outlet pressure you are referring to the downstream pressure, you will need the upstream pressure and proceed as TBP recommends. rmw
May 27, 2009 #4 Zesti Mechanical Jan 8, 2009 155 The velocity of gasflow through an orifice is limited to the speed of sound... Upvote 0 Downvote
May 29, 2009 #5 FredRosse Mechanical Nov 3, 2004 131 115 psia inlet, nearly saturated steam 340F 3.068 inch pipe ID, inlet & outlet 2.125 inch sharp edged orifice Cd = 0.62 downstream pressure (PSIA) & resultant flowrate (LBm/hr) 114 3560 110 7,730 100 12,650 80 16,660 70 & less 17,300 Upvote 0 Downvote
115 psia inlet, nearly saturated steam 340F 3.068 inch pipe ID, inlet & outlet 2.125 inch sharp edged orifice Cd = 0.62 downstream pressure (PSIA) & resultant flowrate (LBm/hr) 114 3560 110 7,730 100 12,650 80 16,660 70 & less 17,300
