Ashrae Duct Fitting Database Excel — Link

values) and then paste them into their custom Excel ESP (External Static Pressure) calculation sheets. HVAC Simplified Sheets: Sites like HVAC Simplified

=XLOOKUP(1, (Table1[Fitting_Type]="Elbow")*(Table1[R/D]>=0.75), Table1[Co], "Not Found", 0, 1)

Velocity (FPM)=CFMArea (sq. ft.)Velocity (FPM) equals the fraction with numerator CFM and denominator Area (sq. ft.) end-fraction

Do not store individual copies of the exported database tables on local hard drives. Host the reference database or master lookup file on a secured corporate network drive or cloud repository (such as SharePoint or OneDrive). This ensures every engineer in the firm utilizes the exact same, verified data set.

The most common workflow involves using the DFDB software or DFDB Mobile App to calculate specific fitting losses, then manually entering those values into an Excel-based ESP calculation sheet. 2. Mobile App Report Export ashrae duct fitting database excel link

Whether using the full desktop software or the Lite mobile app, the calculation process follows a standardized workflow.

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

Several HVAC software developers offer commercial Excel add-ins that wrap the ASHRAE DFDB equations into custom Excel functions. Once installed, these add-ins allow you to type formulas directly into a cell, such as: =ASHRAE_FIT_COEFF("SD5-1", Diameter, Velocity)

Using Excel’s built-in Power Query tool (located under the Data > Get Data tab), you can create a permanent connection to these database tables. Power Query can import the fitting codes, geometry parameters, and corresponding loss coefficient tables directly into a hidden reference sheet within your master Excel design workbook. 2. Utilizing CSV/Text Data Tables and XLOOKUP values) and then paste them into their custom

: ASHRAE offers a mobile version called the Duct Fitting Database Lite App for quick field calculations on iPhone and iPad.

For HVAC engineers, designers, and energy modelers, accurate pressure loss calculations for duct fittings are not just a technicality—they are the backbone of efficient system design. For decades, the has been the gold standard reference for loss coefficients. However, the challenge has always been moving this data from static PDF tables (like ASHRAE Fundamentals Handbook, Chapter 34) into dynamic, usable engineering tools like Microsoft Excel.

: A hidden sheet defining air density, roughness factors, and system constraints. Step 2: Set Up Structured Tables

To maximize the value of the DFDB:

The ASHRAE Duct Fitting Database is a collection of loss coefficients (C-factor, or technically Co for round and Co' for rectangular) for hundreds of HVAC fittings, including:

The DFDB is available through multiple channels, each with distinct advantages.

Historically, engineers relied on the charts and tables printed in the ASHRAE Fundamentals Handbook . Today, the database is primarily maintained as a digital application.

The is a subscription-based tool rather than a free Excel file. While ASHRAE does not provide a direct Excel link for the database itself, users typically use the database software to generate loss coefficients and then manually or programmatically transfer that data into Excel for External Static Pressure (ESP) calculations . Report: Accessing and Using ASHRAE Duct Fitting Data 1. Official Access Methods The most common workflow involves using the DFDB