Ashrae Duct Fitting Database Excel Link -

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

ΔP=Co×Pvcap delta cap P equals cap C sub o cross cap P sub v

ASHRAEDFDB.dll (32-bit or 64-bit)

If you have purchased the official DFDB software, you can export the data to populate your own Excel sheet. Here is how to structure it: Step 1: Input Data Structure

ASHRAE coefficients do not always scale linearly. If your sheet uses basic linear interpolation between two database points, it may differ slightly from the official software output. For critical designs, break your reference tables into smaller, more granular steps. 3. Broken External Links ashrae duct fitting database excel link

The ASHRAE Duct Fitting Database, often referred to as the DFDB, is a comprehensive, electronic database of loss coefficient tables for over 200 different round, rectangular, and flat oval duct fittings.

to calculate loss coefficients and then transfer that data to Excel for total External Static Pressure (ESP) calculations. Excel Integration Features Spreadsheet Email Export : Both the full cloud-based version and the Duct Fitting Database Lite App Input the specific dimensions, angles, and flow rates

Create a standardized tabular layout with the following column headers: Duct Section/Node (e.g., Node 1 to Node 2) Airflow Rate (CFM or L/s) Duct Shape & Size (Width x Height, or Diameter) Velocity (FPM or m/s) — Calculated via formula Velocity Pressure ( Vpcap V sub p ) — Calculated via formula ASHRAE Fitting ID (e.g., CR3-1) Fitting Loss Coefficient ( Cocap C sub o ) — The Linked Database Value Fitting Pressure Drop ( ) — Calculated ( Step 2: Establish the Database Link

For those without the software, the ASHRAE Handbook—Fundamentals provides tables for common fittings. Many firms build their own internal Excel libraries by manually inputting these tables. Benefits of Linking ASHRAE Data to Excel If your sheet uses basic linear interpolation between

is a free alternative for iPhone/iPad that allows for quick field calculations and spreadsheet sharing for 14 common fittings. Official Documentation

Suitable for a wide range of supply, return, and exhaust systems. If you'd like, I can: