Ashrae Duct Fitting Database Version. 6.00.05 Guide

When an existing building suffers from poor airflow in specific zones, technicians and engineers can model the installed duct layout in the DFDB. This helps identify "choke points" or poorly designed fittings that may be causing unexpected resistance. Why Version Integrity Matters

This occurs when trying to calculate an empty selection. Ensure a specific fitting sub-type is highlighted (not just the category folder).

The ASHRAE Duct Fitting Database is a comprehensive software application containing loss coefficient data for more than 200 round, rectangular, and flat oval duct fittings. Instead of manually cross-referencing tables in the ASHRAE Handbook—Fundamentals , engineers use this database to automate pressure drop calculations. Core Functions ashrae duct fitting database version. 6.00.05

When air flows through a duct system, it encounters resistance caused by friction against the duct walls and dynamic losses through fittings such as elbows, tees, transitions, and junctions. The DFDB allows engineers to select specific fittings, input design parameters (such as dimensions and flow rates), and instantly retrieve the appropriate loss coefficient ( Cocap C sub o ) and pressure drop values.

One common source of error is using the wrong velocity pressure (upstream vs. downstream). Version 6.00.05 explicitly labels whether the loss coefficient is based on: When an existing building suffers from poor airflow

: Corrected the text table copy error for ED5-2 . Core Features & Functionality

If your projects are small residential systems with simple round ducts, you may not need the full database—but the viewer is still faster than flipping pages. Ensure a specific fitting sub-type is highlighted (not

Open the database and navigate the tree structure. For example, to find a rectangular pleated elbow, navigate to: Rectangular Fittings > Elbows > Pleated . Step 3: Input Geometric and Flow Ratios

Engineers select massive, expensive fans that consume excessive electrical power, create acoustic issues, and waste mechanical room space.