Ashrae Duct Fitting Database Version 60005 Jun 2026

The core version 6.00.05 software is available as a for Windows, installed via a traditional installer. The primary distribution channel is the official ASHRAE website .

The ASHRAE Duct Fitting Database is a computerized resource containing loss coefficient data for more than 200 round, rectangular, and flat oval duct fittings. Instead of manually parsing through tables in the ASHRAE Handbook—Fundamentals , engineers use this software to select specific fittings and instantly retrieve accurate loss coefficients ( C0cap C sub 0 Core Purpose ashrae duct fitting database version 60005

This is the "interesting" part: The database acknowledges that the laws of physics change based on speed. The core version 6

Version 6.0.005 utilizes calculation routines derived from empirical testing and CFD (Computational Fluid Dynamics) validation to determine these coefficients. The governing equation remains the fundamental relationship between static pressure loss and velocity pressure: Instead of manually parsing through tables in the

Added round straight ducts for constant equal friction (CD11-4) and velocity-limited designs (CD11-3), as well as flexible elbows with specific r/D ratios (CD3-22, CD3-23).

Duct fittings cause dynamic pressure losses due to friction and turbulence. The database provides a non-dimensional loss coefficient ( Cocap C sub o