Ashrae Duct Fitting Database Excel Link File

The database allows engineers to input specific dimensions and flow rates to receive an accurate dynamic loss coefficient ( Cocap C sub o

Build "What-If" scenarios to see how changing a fitting affects total static pressure.

Keep your heating/cooling loads and duct static pressure calculations in one project file. ashrae duct fitting database excel link

ASHRAE does not provide a single, free Excel file containing all raw data due to the complexity of the algorithms. However, there are three primary ways to link this data to Excel: 1. The Official ASHRAE DFDB Software

The official desktop application (available via the ASHRAE bookstore) includes an "Export to Excel" feature. You can select the specific fittings used in your project and export the calculated coefficients directly into a .csv or .xlsx format to continue your calculations. 2. Third-Party Add-Ins The database allows engineers to input specific dimensions

💡 Always verify the "Loss Coefficient" units. Some databases use different reference velocities (main stream vs. branch stream), which can lead to significant errors if not linked correctly in your Excel formulas. If you’d like to build a custom tool, let me know:

The DFDB contains loss coefficient data for over 200 types of duct fittings. It covers: Supply, return, and exhaust systems. Round, rectangular, and flat oval geometries. However, there are three primary ways to link

Common fittings like elbows, tees, transitions, and fan plenums.