Ashrae Duct Fitting Database Version 60005 Upd

ASHRAE Duct Fitting Database (DFDB) version 6.00.05

The "story" behind is largely one of a digital evolution designed to solve a critical engineering headache: calculating pressure loss across complex air distribution systems. The Visionary Behind the Tool

remains the industry standard for this task. The current version, ashrae duct fitting database version 60005

Quick takeaway

• Flat Oval Fittings: As architectural constraints tighten plenum space, flat oval ducts are becoming more prevalent. v6.0.005 offers refined coefficients for flat oval elbows and transitions, which behave aerodynamically differently than their rectangular counterparts.
• Sound Attenuators: The database integrates insertion loss data alongside pressure drop, allowing engineers to see the energy penalty of noise control immediately.

Cite the ASHRAE Design Guide for Duct Systems as the theoretical foundation for the software. 3. Methodology & Technical Basis Loss Coefficients ( Cocap C sub o ASHRAE Duct Fitting Database (DFDB) version 6

Version 60005 differentiates between diverging (splitting flow) and converging (joining flow) tees. Using the same (C) for both can cause 200% error. Cite the ASHRAE Design Guide for Duct Systems