) as the most accurate source for fitting losses compared to simplified friction charts or "ductulators". Available Versions & Formats Web/Cloud Access : The primary 2016 release shifted toward a cloud-based annual subscription
: The interface displays inputs and calculations that update instantly as parameters are adjusted. ashrae duct fitting database 2016
Users can input specific flow rates, duct dimensions, and air density to receive real-time updates on velocity, velocity pressure, and total pressure loss. Visual Aids: ) as the most accurate source for fitting
ΔP=C×(ρ×V22)cap delta cap P equals cap C cross open paren the fraction with numerator rho cross cap V squared and denominator 2 end-fraction close paren ΔPcap delta cap P : Total pressure loss (typically in Pa or in. wc). : Loss coefficient from the database. : Air density (standard air is approximately : Air velocity. Visual Aids: ΔP=C×(ρ×V22)cap delta cap P equals cap
A 350-bed hospital in Ohio faced excessive static pressure in its isolation ward supply duct. The original design (1999) assumed mitered elbows with (C=1.5). Engineers re-analyzed using the and found:
: Supports both I-P (Imperial) and SI (International System) units for global application. Mobile Integration
From the database, for C1-9: (C = 1.2) (based on W/H = 2.0 and no vanes).