Site studies
Chiller Yards That Breathe Their Own Exhaust
Wind and nearby walls can send an air-cooled chiller's exhaust back into its own intake, and in a synthetic yard one noise screen took the worst chiller from 0.2 to 6.3 °F over ambient.
· 6 min
Site studies
Equipment Yard Noise: What a Screening Estimate Can and Can't Tell You
How sound from chillers, generators and fans spreads across a site, the arithmetic behind a quick estimate, and what a permit study needs that a quick estimate does not have.
· 8 min
Site studies
NO₂ and CO Near Air Intakes: Where the Limits Come From
The 100 ppb NO₂ and 35 ppm CO limits in an exhaust study are EPA air quality standards, not ASHRAE's, and a CFD result is a screen against them, not proof of compliance.
· 7 min