Ashrae Duct Fitting Database Version. 6.00.05 Jun 2026

While the ASHRAE DFDB Version 6.00.05 is the gold standard for loss coefficients, it is often used alongside complementary tools:

Similarly, professional design software packages like have integrated the ASHRAE database. Right-CommDuct combines the DFDB with various computation methods (e.g., equal friction, static regain) to provide a comprehensive design environment for commercial HVAC systems.

Precision is the foundation of efficient HVAC engineering. In commercial and industrial buildings, duct systems act as the respiratory network of the structure. Designing these networks requires accurate calculations of pressure losses to ensure proper airflow, thermal comfort, and energy efficiency.

: Input the volumetric airflow rate (CFM or L/s) for each branch of the fitting. ashrae duct fitting database version. 6.00.05

where:

What is the primary (commercial supply, industrial exhaust, etc.)?

ASHRAE Duct Fitting Database (DFDB) version 6.00.05 was released on April 5, 2016 While the ASHRAE DFDB Version 6

[Accurate Fitting Selection] ➔ [Optimized Fan Sizing] ➔ [Lower Energy Bills & Capital Costs] 1. Optimized Fan Sizing

Instead of manually flipping through hundreds of pages in the ASHRAE Handbook—Fundamentals , Version 6.00.05 allows users to input specific geometry, flow rates, and velocity parameters to instantly retrieve exact pressure loss values. Key Features of Version 6.00.05

= Dimensionless local loss coefficient determined by fitting geometry and flow splits. Pvcap P sub v In commercial and industrial buildings, duct systems act

| Aspect | Details | |------|------| | | Windows XP / Vista / 7 / 8 / 10 / 11 (32‑bit version) | | RAM | Minimal; typical office specifications suffice | | Disk Space | Approximately 30 MB for installation and data files | | PDF Viewer | Adobe Acrobat Reader 8.0 or higher (for accessing loss coefficient PDFs) | | License Type | Single‑user, one‑year subscription, cloud‑based access | | Multi‑User Option | Not available for Version 6.00.05 |

High pressure drops usually equate to high turbulence, which creates localized noise. By utilizing accurate empirical data, engineers can predict high-resistance zones and add appropriate attenuation before construction begins. Software Stability

Many engineers ask: "If I am still using version 4.02 or 5.00, should I upgrade?"

At 9:00 AM, she opened her duct sizing software and imported the file. Instead of hand-entering coefficients, she selected a 24" round 90-degree mitered elbow with three turning vanes. The database returned: