ASHRAE Duct Fitting Database 6.00.05 Free Download: A Comprehensive Guide
Given: 12 in (0.3048 m) round duct, air velocity 6 m/s, elbow K = 0.6, ρ = 1.2 kg/m3.
Compute dynamic pressure q = 0.5·ρ·V^2 = 0.5·1.2·6^2 = 21.6 Pa.
Fitting loss ΔP = K·q = 0.6·21.6 = 12.96 Pa (≈0.052 in. wg). ashrae duct fitting database 6.00 05 free download
While not software, the 2021 ASHRAE Fundamentals Handbook (Chapter 34) contains the exact same loss coefficient charts that version 6.00.05 automates. You can find legal PDF versions via your local engineering society or university library. You will do the math manually, but the data is the same. ASHRAE Duct Fitting Database 6
of duct fittings, including round, rectangular, and flat oval geometries. It covers the three primary duct functions—supply, exhaust, and common (supply/return). Main duct width: 24 in, height: 12 in
Q2: Do I need an ASHRAE membership for the free download? For the archived 6.00.05 version, typically no. However, you may need to create a free "User Account" on ashrae.org to access the download page.
Full Web/Desktop Version (v6.00.05): Available through the ASHRAE Bookstore via an annual cloud-based subscription. It is sold as a single-user product and is no longer available on CD.
The database is grounded in ASHRAE Standard 120, which establishes uniform methods for testing HVAC duct resistance. Key features of the current 6.0 series include: