Excel allows designers to combine duct friction losses, fitting losses, and equipment pressure drops (coils, filters, dampers) into a single master schedule. Key Components of an Excel-Based Duct Calculation Tool
For the most accurate and official data, ASHRAE offers two primary digital products: ASHRAE Duct Fitting Database (Cloud-Based) ashrae duct fitting database excel
C (Common), S (Supply), R (Return), E (Exhaust). Excel allows designers to combine duct friction losses,
The ASHRAE DFDB is a collection of loss coefficients (known as For decades, navigating this rich repository of engineering
The ASHRAE Duct Fitting Database (often referred to as DFDB) is a comprehensive collection of pressure loss coefficients (
The ASHRAE Duct Fitting Database (DFDB) has long stood as the definitive reference for HVAC engineers seeking accurate loss coefficient data and pressure loss calculations for air duct systems. For decades, navigating this rich repository of engineering data—often tucked away in CD-ROMs, PDFs, or proprietary software interfaces—posed a significant workflow challenge. However, the ability to harness this database within Microsoft Excel has transformed how professionals approach duct design, external static pressure (ESP) calculations, and overall system optimization.