Ashrae Duct Fitting Database Excel Jun 2026

For complex fittings where the loss coefficient changes dynamically with the Reynolds number, standard VLOOKUP might not be enough. Writing custom VBA scripts or using Excel's built-in advanced algorithms can automate curve-fitting equations.

This is the user interface where the engineer inputs the operating parameters of the duct section being analyzed. ashrae duct fitting database excel

Create a UserForm that shows a list of fittings (CR, CD, ES series). When you click a fitting, a macro auto-fills the geometry and coefficient into your active row. For complex fittings where the loss coefficient changes

This is where you input your job-specific variables. It should use INDEX-MATCH or XLOOKUP arrays to pull the correct (C_o) based on the fitting type and geometry. ashrae duct fitting database excel

This is the user interface where the engineer inputs the operating parameters of the duct section being analyzed.

Create a UserForm that shows a list of fittings (CR, CD, ES series). When you click a fitting, a macro auto-fills the geometry and coefficient into your active row.

This is where you input your job-specific variables. It should use INDEX-MATCH or XLOOKUP arrays to pull the correct (C_o) based on the fitting type and geometry.