Ashrae Duct Fitting Database Excel Link [2021] -

Using the official ASHRAE formulas ensures that pressure drop calculations meet industry standards.

Input the specific dimensions, angles, and flow rates for each node.

Using Excel formulas, you can link the loss coefficient data to your duct design calculations, making it easy to access and apply the data. ashrae duct fitting database excel link

| Step | Action | |:---:|:---| | 1 | Select the duct function (supply, exhaust, or common) and shape (round, rectangular, or flat oval) | | 2 | Choose the specific fitting type (e.g., 90° smooth radius elbow, R/D=1.5) | | 3 | Enter the flow rate and dimensions (you can toggle between I-P and SI units) | | 4 | Click to obtain the loss coefficient ( K ) and pressure drop (ΔP = K·½ρV²) | | 5 | View results, including a pictorial outline of the fitting with its ASHRAE reference number | | 6 | Export the table data to the clipboard for use in Excel or save to a project (.dfdb) file |

Let’s cut through the noise and show you how to connect Excel to the most powerful duct fitting library on the planet. Using the official ASHRAE formulas ensures that pressure

This macro-enabled sheet includes a dropdown menu for ASHRAE fitting codes and provides diagrams and descriptions directly within Excel.

Use Python scripts to call open-source fluid mechanics libraries or private SQL databases containing fitting data, feeding the results right into designated Excel cells. Step-by-Step Implementation in an Excel Sheet | Step | Action | |:---:|:---| | 1

Here is a step-by-step guide to using the ASHRAE duct fitting database Excel link:

Using the DFDB typically follows a straightforward workflow:

When air moves through a straight duct, it experiences friction loss. When it encounters a fitting—such as an elbow, tee, transition, or obstruction—the air suffers dynamic pressure losses due to turbulence, flow separation, and changes in velocity or direction. The total pressure loss ( Pjcap P sub j ) for a specific fitting is calculated using the formula: Pj=Co×Pvcap P sub j equals cap C sub o cross cap P sub v Pjcap P sub j = Total pressure loss (in. wg or Pa) Cocap C sub o = Fitting loss coefficient (dimensionless) Pvcap P sub v

The database provides loss coefficient tables for over , covering round, rectangular, and flat oval designs.