Ashrae Duct Fitting Database 2016 Portable <2026>

The ASHRAE Duct Fitting Database (DFDB) is a cloud-based application, rather than a single document, containing loss coefficients for over 200 fitting types. The 2016-era data and methodology are primarily documented within the Duct Design chapter of the ASHRAE Handbook. Access the current database through Duct Fitting Database - ASHRAE

: Periodic updates to specific fitting codes (e.g., SR7-2, SR7-3) to refine calculation parameters. Further Exploration Review the Official ASHRAE DFDB Page for subscription details and current version features. Consult the ASHRAE Handbook—Fundamentals (Chapter 21) ashrae duct fitting database 2016

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| Category | Description | Example Fitting | | :--- | :--- | :--- | | | Flat oval & round fittings | Round 90° smooth elbow | | C1 | Rectangular elbows | Mitered elbow with splitter vanes | | C2 | Round & rectangular transitions | Conical diffuser | | C3 | Converging & diverging junctions | 45° lateral wye | | C4 | Inlet & outlet conditions | Hooded exhaust inlet | | C5 | Dampers & control devices | Opposed blade damper (open) | | C6 | Duct-mounted equipment | Filter, coil, heat exchanger | | C7 | Flexible duct fittings | Flex elbow (with compression) | The ASHRAE Duct Fitting Database (DFDB) is a

How to Access

• Added flat-oval and turning vane fittings.
• Corrected prior tee and elbow coefficients.
• Provided a robust DLL for software integration.
• Served as the reference for duct design until the 2020 version.

• Fitting Number (e.g., SR3-1)
• Geometry parameters (up to 6 variables)
• Loss coefficient table (values of $C$ or $C_o$ for discrete parameter combinations)
• Reference to original test data (ASHRAE RP-xxx, SMACNA, or manufacturer data)

: Users can save selected fittings into a project file, which facilitates the calculation of total pressure drop along a "critical path" or the longest duct route. Units and Reporting : The software supports both Added flat-oval and turning vane fittings

), the system immediately outputs velocity, velocity pressure, and the specific fitting loss coefficient.

1. Identify the duct fitting: Determine the type of duct fitting you need to analyze (e.g., elbow, tee, etc.).
2. Search the database: Use the search function to find the fitting in the database.
3. Select the fitting: Choose the fitting that matches your application, taking note of the size, configuration, and other relevant details.
4. Obtain the loss coefficient: Retrieve the loss coefficient for the selected fitting, which can be used in duct system design and analysis calculations.