Search results for query: *

Are there any standard methods to calculate near field sound pressure levels from vib/acc measurements? The application I am looking at is an exahust duct (HRSG or SCR) from a combustion turbine generator. Need to seperate out the duct noise from the balance of plant noise - this was one...

Is anyone aware of any studies conducted to determine the effect of wind direction on far field noise levels (distances greater than 1,000 feet from the wind turbine generator). Generally, I would expect downwind to be slighly louder than upwind, but would like to confirm with published...

You may also be interested in on-line courses offered through Penn State's World Campus or a good primer can be found at http://www.me.psu.edu/lamancusa/me458/

I recently worked on a somewhat similar project for a power client, though a bit of the reverse, rather than compressing they were reducing the line pressure from 900 psig to approx 400 psig. There was significant valve noise (over 100 dBA at 3 feet, mostly higher frequency) as acoustics wasn't...