is a standalone application (currently version 6.0) that contains loss coefficients for over 200 fittings. Software vs. Excel
The ASHRAE Duct Fitting Database (DFDB) is a comprehensive digital library used by HVAC engineers to calculate pressure losses across more than 200 types of round, rectangular, and flat oval fittings. While the core database is provided as a cloud-based web application or a mobile app, many professionals integrate this data into Excel spreadsheets to perform the total External Static Pressure (ESP) calculations required for sizing fans and air handling equipment. Key Features and Access Duct Fitting Database - ASHRAE ashrae duct fitting database excel
The ASHRAE Duct Fitting Database (DFDB) provides a standardized method for calculating pressure losses in HVAC systems. While the primary software is a cloud-based or mobile application, it allows users to export results to Excel for comprehensive External Static Pressure (ESP) analysis. 1. Report Overview is a standalone application (currently version 6
For fittings at low velocities (e.g., VAV systems at part load), the (C_o) varies significantly. Your Excel tool must include a correction algorithm based on Re = (D_h * V) / ν. While the core database is provided as a
Fitting Selection: Locate the specific fitting (round, rectangular, or flat oval) and retrieve its pictorial outline and loss coefficient.