Many firms use the Titus SRG Calculator or custom-built sheets using Darcy-Weisbach equations to mirror the database's logic. Tool Review: Key Features & Performance ⚙️ Core Functionality
If you need the official data, you must purchase the tool from the ASHRAE Bookstore.
Create a user interface row where a designer selects the fitting code from a drop-down menu. ashrae duct fitting database excel link
The ASHRAE Duct Fitting Database Excel file can be downloaded from the ASHRAE website. The database contains a collection of duct fitting loss coefficients, which are essential for designing and analyzing HVAC duct systems. The database is in Excel format, making it easy to use and accessible to a wide range of users.
Eliminate manual data entry by pulling fitting coefficients instantly. Many firms use the Titus SRG Calculator or
While the standalone ASHRAE DFDB software offers a graphical user interface to search for fittings, manually copying loss coefficients into a design spreadsheet is tedious. Establishing an Excel link unlocks several engineering advantages:
Commercial software developers create dedicated Excel add-ins that embed ASHRAE calculations directly into your spreadsheet ribbon. These tools typically introduce custom Excel formulas, such as: =ASHRAE_Fitting_Loss("SD1-1", FlowRate, Width, Height) When utilizing these add-ins, the calculations run in the background via compiled DLL files or API requests, populating your sheet instantly. 2. Exporting Standalone DFDB Software Data The ASHRAE Duct Fitting Database Excel file can
Use XLOOKUP or INDEX/MATCH formulas on your main calculation sheet to retrieve coefficients based on fitting codes and aspect ratios. 2. Utilizing Third-Party HVAC Design Software Add-ins
). However, manually looking up coefficients for dozens of fittings is slow and prone to errors.
value from the ASHRAE software into your Excel sheet. Use Excel formulas to calculate:
Write a simple query to pull the exact tables containing the fitting coefficients.