How to calculate settling out pressure
How to calculate settling out pressure
(OP)
Hello.
I don't know calculate correctly the settling out pressure in a complex circuit (Centrifugal compressor plus exchangers, vessels, pipes). Must I use all the volume of these items? Is correct to account only gas volume?.
Thanks.
I don't know calculate correctly the settling out pressure in a complex circuit (Centrifugal compressor plus exchangers, vessels, pipes). Must I use all the volume of these items? Is correct to account only gas volume?.
Thanks.





RE: How to calculate settling out pressure
The compressor internal volume normally wouldn't be considered as when the compressor trips, the discharge check valve will close and the gas within the compressor equalizes out through the suction. This might or might not be applicable to you depending on your system.
At settle out, you have still the same mass of gas but it will all be at the same pressure or where the density of the gas (eg. settle out pressure) * system total volume equals the initial mass of gas. If part of the system(s) is filled with liquid and that volume doesn't change, then you don't need to include that.