: Used where space constraints limit rectangular or round options. 2. Step-by-Step Selection Process
: Engineers can perform pressure loss calculations on-site and email reports with spreadsheet attachments for further analysis on a desktop.
Over the years, the DFDB has been distributed in multiple formats. In the 2016 era, the primary ways to access the resource were:
Engineers can save fittings into specific project files, which can then be exported as spreadsheets for further analysis or shared with team members. Impact on Sustainability and Energy ashrae duct fitting database 2016
The ASHRAE Duct Fitting Database 2016 is the latest version of the database, released in 2016. This updated version includes several key features that make it an indispensable resource for HVAC engineers:
Whether you are designing a cleanroom, a data center, or a single-family home, accurate pressure loss calculation is non-negotiable. The offers the most comprehensive, peer-reviewed, and field-validated set of loss coefficients ever compiled.
The ASHRAE Duct Fitting Database 2016 can be accessed through the ASHRAE website or through various software platforms that integrate with the database. Users can purchase a subscription or license to access the database. : Used where space constraints limit rectangular or
Note: ASHRAE released a cloud-based API for the database in 2018, but the core 2016 dataset remains the reference standard for most BIM and Revit families.
The Duct Fitting Database is essentially an electronic standard reference. It allows engineers to enter data for a specific fitting—such as its geometry, dimensions, and airflow rate—and immediately obtain its Loss Coefficient ( Co ) and the resulting pressure drop [0†L5-L8]. This speed and accuracy are crucial, as manually determining these values from reference tables can be slow and prone to error. The database covers functions for hundreds of fitting configurations [0†L10-L11].
A 350-bed hospital in Ohio faced excessive static pressure in its isolation ward supply duct. The original design (1999) assumed mitered elbows with (C=1.5). Engineers re-analyzed using the and found: Over the years, the DFDB has been distributed
Engineers use the DFDB primarily to determine the of a duct system. Duct Fitting Database - ASHRAE
: Supports both I-P (Imperial) and SI (International System) units for global application. Mobile Integration
The ASHRAE Duct Fitting Database is a repository of data on the aerodynamic performance of various duct fittings, including elbows, tees, wyes, and transitions. The database provides detailed information on the pressure losses associated with these fittings, which is essential for designing efficient and effective HVAC systems. The data in the database is based on extensive research and testing conducted by ASHRAE and other organizations.
For field use, ASHRAE offers a free DFDB Lite app for iPhone and iPad, allowing pressure loss calculations for select supply, common, and return/exhaust fittings in both I-P and SI units. Inputs can be adjusted by touch, and installation is automatic.