Recip Compr Piping Vibration
Recip Compr Piping Vibration
(OP)
In regard to acoustical analysis, API 618 App M.2 says "The piping system must be modeled to a point where piping changes will have insignificant effects on the parts of the system under study (usually a large vessel upstream and downstream of the units to be studied)."
My questions are:
1. How can I determine the length of pipe to be included? Is it based on the pressure fluctuations? Can it be determined before the analysis is done? Is it a function of the gas composition? Can it be determined from the compressor capacity, speed, and the pipe size? What is a "large" vessel? Is it relative to the volume contained in the piping or compressor? TIA
My questions are:
1. How can I determine the length of pipe to be included? Is it based on the pressure fluctuations? Can it be determined before the analysis is done? Is it a function of the gas composition? Can it be determined from the compressor capacity, speed, and the pipe size? What is a "large" vessel? Is it relative to the volume contained in the piping or compressor? TIA





RE: Recip Compr Piping Vibration
In a chemical plant or a refinery that usually means modeling upstream and downstrem to the first large vessel, usually a column or a tower or a reactor. Something on the the order of 10+ feet in diameter and 50+ feet tall. In my days of modeling natural gas compressor stations I would model upstream and dowstream to the main line and then terminate the main line with an infinite end, basically modeling it as an infinitely long pipe run.
-The future's so bright I gotta wear shades!
RE: Recip Compr Piping Vibration
Don't pay too little for a pulsation study.