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Used as the industry-standard basis for defining component and system pressure drops at rated flows, often required in high-stakes engineering specifications (e.g., nuclear or industrial ventilation). Version 6.00.05 Specifications
This version introduced several critical additions and technical fixes to improve the accuracy of air distribution modeling: : CD11-4 : Straight Duct, Round, Constant Equal Friction. CD11-3 : Straight Duct, Round, Velocity Limited. CD3-22 & CD3-23 : Flexible elbows with ratios of 1.0 and 1.5, respectively. ashrae duct fitting database version. 6.00.05
The is a critical tool for HVAC design engineers, providing precise loss coefficient data for a vast array of duct fittings. Version 6.00.05 , released as a significant update to the software suite, streamlines the process of calculating pressure losses and ensuring system efficiency. Key Features of Version 6.00.05
Invest the time to learn its hierarchy, integrate it into your software stack, and always cross-check the reference velocity. In the high-stakes world of modern building design, guesswork is a liability—and Version 6.00.05 is your hedge against it. CD11-3 : Straight Duct, Round, Velocity Limited
Features pictorial outlines and technical diagrams for every single fitting code (e.g., SR4-2 rectangular transitions or CR11-1 straight rectangular segments ), reducing user entry errors.
Select the operational mode (Supply, Return, or Common) and the cross-sectional shape (Rectangular, Round, or Flat Oval). Version 6
: The database includes unique data for supply, exhaust, and common (supply/return) duct functions. 2. Version 6.00.05 Technical Updates
Before diving into Version 6.00.05 specifically, it is important to understand the tool's purpose. The ASHRAE Duct Fitting Database is a digital repository of loss coefficients (C-values) for over 1,000 types of duct fittings. It accompanies ASHRAE’s "Duct Fitting Database" (DFDB) CD/DVD and is referenced directly in the , Chapter 34 (Duct Design).
The database retains its .DFD file format, but Version 6.00.05 introduces a plugin pathway for Revit and AutoCAD MEP via a COM interface. This allows dynamic lookup of C-values directly from a 3D model—a major time-saver for large projects.