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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.
The ASHRAE Duct Fitting Database (DFDB) is the industry standard for calculating pressure loss in HVAC systems. While the official software is a standalone application, many engineers prefer the flexibility of Excel for complex project calculations. ashrae duct fitting database excel link
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 DFDB contains loss coefficient data for over
Clearly show the math and coefficients used for peer reviews or code compliance. Key Variables Needed for Excel Calculations The ASHRAE Duct Fitting Database (DFDB) is the
