| Sheet Name | Description | |------------|-------------| | | List of fitting types, figures, and page references to ASHRAE Handbook | | Round Fittings | Loss coefficients for round duct elbows, tees, transitions, etc. | | Rectangular Fittings | Loss coefficients for rectangular duct elbows, miters, turning vanes, etc. | | Flat-Oval Fittings | Loss data for flat-oval ducts (converted from round/rectangular equivalents) | | Terminals & Inlets | Register, diffuser, grille, and louver loss coefficients | | Transition & Branch Coefficients | Cones, wyes, laterals, and junctions with flow ratio tables | | Velocity Pressure / Duct Size Lookup | Helper tables for velocity pressure at standard air density (0.075 lb/ft³ or 1.204 kg/m³) |
Copy the resulting pressure loss (typically in Pascals or inches w.g.) into your project's Excel template for the total ESP sum. 3. Building Your Own Excel Calculator ashrae duct fitting database excel
Duct design is rarely linear. An engineer might size a duct, realize the pressure drop is too high, and change the fitting type (e.g., switching from a smooth radius elbow to a pleated elbow). | Sheet Name | Description | |------------|-------------| |
The ASHRAE Duct Fitting Database (DFDB) is a professional resource used to calculate pressure losses in HVAC systems. While the core database is a standalone software or web application, it integrates with Excel primarily through report exports rather than a native spreadsheet format. Core Features The ASHRAE Duct Fitting Database (DFDB) is a