ASHRAE Duct Fitting Database (DFDB) is primarily distributed as a standalone software or cloud-based tool rather than a single direct Excel link. However, you can export your data and results to from these official platforms for further analysis. Official Access Options
Because the equations used to calculate fitting losses are public knowledge (published in the Handbook), many senior engineers and consultants build their own Excel Duct Calculators.
Data Management Features:
values) and then paste them into their custom Excel ESP (External Static Pressure) calculation sheets. HVAC Simplified Sheets: Sites like HVAC Simplified
to sum total External Static Pressure (ESP) for complex systems. : Reports emailed from the app include ashrae duct fitting database excel link
Fitting ID: The specific code (e.g., SD5-1 for a mitered elbow). Velocity ( ): Calculated from flow (CFM) and area. Velocity Pressure ( Pvcap P sub v ): Usually calculated as for standard air. Loss Coefficient ( Cocap C sub o ): The value retrieved from the database. Total Pressure Loss: Calculated as Where to Buy and Download
The official ASHRAE Duct Fitting Database (DFDB) is not primarily distributed as a standalone Excel file, but rather as a dedicated software application that includes table data for over 200 fittings. You can access it through the following official channels: Official ASHRAE Resources ASHRAE Duct Fitting Database (DFDB) is primarily distributed
. This file can be opened on a desktop for further analysis or integration into larger project files. Systematic Calculation : In a typical design "story," an engineer identifies the critical path