Fitting Database Excel ((install)) | Ashrae Duct

What do you use most often? (e.g., rectangular elbows, round T-junctions) Share public link

The ASHRAE Duct Fitting Database Excel is a comprehensive tool that provides engineers and designers with accurate and reliable duct fitting data. The database is widely used in the HVAC industry, and its applications in duct system design, pressure loss calculations, energy efficiency, and commissioning and testing are numerous. The importance of accurate duct fitting data cannot be overstated, as it directly impacts the efficiency and effectiveness of duct system performance. By using the ASHRAE Duct Fitting Database Excel, engineers and designers can ensure that their duct system designs are optimized, efficient, and cost-effective.

Whether your projects require adjustments for . Share public link ashrae duct fitting database excel

Don't just rely on a static table. Use the ASHRAE DFDB application to generate your coefficients for critical paths, and build a VLOOKUP or XLOOKUP table in Excel for your standard fittings. It streamlines your workflow while keeping you compliant with the latest Handbook fundamentals.

When air moves through a straight duct, it experiences friction loss. When it hits a fitting—like an elbow, tee, or transition—the air changes direction or velocity, causing dynamic pressure loss. ASHRAE defines this loss using a dimensionless coefficient ( ). The pressure loss ( ) is calculated using the formula: Δp=C×pvdelta p equals cap C cross p sub v What do you use most often

To build or utilize an effective ASHRAE duct fitting tool in Excel, the workbook must be structured logically. A professional template typically features three primary components: The Backend Database (The Data Cube)

It covers both rectangular and round ductwork, including various fitting geometries. The importance of accurate duct fitting data cannot

: Add the pressure losses of all fittings, straight ducts, and equipment (like filters or coils) to determine the total fan static pressure required. Core Calculation Formulas

Each fitting is assigned a unique alphanumeric code (e.g., SD4-1 for a specific type of round elbow) and contains mathematically modeled loss coefficients ( Cocap C sub o