Ashrae Duct Fitting Database Excel (FAST)

The era of flipping through dog-eared handbooks is ending. The is more than a table—it is the foundation for smart, automated, and accurate duct design. By embedding this database into your workflow, you achieve:

This hidden or protected tab houses the ASHRAE loss coefficient data tables. Because fitting coefficients often depend on ratios (like entry-to-exit area or branch-to-main velocity), structure your tables with clear headings for , Geometry Ratio Inputs , and corresponding Cocap C sub o values . 2. The Calculation Engine Tab ashrae duct fitting database excel

=INDEX(C_Range, Match_Low) + ((Target_X - INDEX(X_Range, Match_Low)) / (INDEX(X_Range, Match_High) - INDEX(X_Range, Match_Low))) * (INDEX(C_Range, Match_High) - INDEX(C_Range, Match_Low)) Use code with caution. Automating Calculations with VBA and Power Query The era of flipping through dog-eared handbooks is ending

Fitting loss coefficient data are derived from standardized testing. establishes uniform methods of laboratory testing of HVAC ducts and fittings to determine their resistance to airflow. Familiarity with this standard helps ensure that you are applying the coefficients correctly. Because fitting coefficients often depend on ratios (like

Restrict user input on fitting IDs to a predefined dropdown list. This prevents spelling errors from breaking lookup chains.

The ASHRAE DFDB integrated with Excel is not just a theoretical tool; it has direct, practical applications that affect every stage of the HVAC design and construction process.