ASHRAE Duct Fitting Database (DFDB) is an essential tool for HVAC design engineers used to calculate static pressure loss for various duct fittings. While the official ASHRAE product is a standalone cloud-based or mobile application, it is commonly used in conjunction with Excel for comprehensive External Static Pressure (ESP) calculations. Overview of ASHRAE Duct Fitting Database
Purpose and Role of the Database
Do you need the raw coefficient tables to build your own program? 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).
Some advanced Excel versions also include: ASHRAE Duct Fitting Database (DFDB) is an essential
: Full access requires an annual cloud-based subscription, which some find restrictive for small projects. Flexible Units : Supports both I-P (Imperial) and SI (Metric) units. Specific Fitting Gaps
is a standalone application (currently version 6.0) that contains loss coefficients for over 200 fittings. Software vs. Excel Why Engineers Use the Excel Approach 1
: You can create individual projects, each with unique input values and results, allowing for "what-if" scenario analysis. Excel Integration : The official Duct Fitting Database Lite App