The (often referred to as the DFDB ) is a comprehensive digital catalog of loss coefficients for hundreds of duct fittings. It is developed and maintained by ASHRAE (American Society of Heating, Refrigerating and Air-Conditioning Engineers), the premier organization for HVAC technology and standards.
value, eliminating the errors associated with manual interpolation. 4. Project Reports and Data Export
: D (Supply Air System), R (Return/Exhaust System). ashrae duct fitting database version 60005
Cloud and Desktop Versatility: Unlike older versions that were tethered to specific local machines, Version 6.00.05 is often deployed through a web-based interface or an updated standalone application. This allows for seamless updates, ensuring that engineers always have access to the most recent data without manual patches.
However, the DFDB also helps in modern, high-performance design workflows such as those required by (Standard for High-Performance Green Buildings). This standard recommends using fittings with low pressure drop characteristics, such as long radius elbows with a radius of 1.5 times the duct width, which are well-defined in the database. The specific loss coefficient can be found in tables such as those for fitting type SR7-5 or SR7-9. The (often referred to as the DFDB )
Detail the difference in loss coefficients between smooth versus mitered elbows.
Version is a significant iteration of the DFDB. While there are references to a version "6.0.4" on some platforms, 6.00.05 is the version number officially cited by ASHRAE for its current product. The "6.0" designation is used in official documentation, with "60005" as the precise release identifier. It is available through the official ASHRAE bookstore and is provided via a one-year subscription for cloud-based access . This allows for seamless updates, ensuring that engineers
: Detailed product information and subscriptions are available through the ASHRAE Bookstore .
The is the industry-standard software tool for engineers to calculate pressure losses in HVAC duct systems. It provides access to loss coefficient tables for over 200–250 fittings, including round, rectangular, and flat oval types. Key Features & Capabilities
. It replaces previous standalone desktop versions and provides updated loss coefficient tables for over 200 fitting types. Core Capabilities Fitting Variety