Each fitting entry is identified by a unique number and is accompanied by a pictorial outline to aid in correct identification.
Please share the file format (e.g., .txt , .mdb , .csv ) or the first 20 lines of the file.
[Outdated DFDB Version] ──> Over-approximated Static Pressure ──> Over-sized Fan ──> High Energy Costs & Noise [DFDB Version 6.00.05] ──> Precise Loss Coefficients ($C_o$) ──> Right-sized Fan ──> Code Compliance & Efficiency Eliminating the "Safety Factor" Penalty
: Diverging/converging tees, wyes, transitions, elbows, and hoods. 2. Enhanced Calculation Engine ashrae duct fitting database version 60005
Specialized fittings for restricted spaces. 3. Visual Representation
: Export the loss coefficient summaries to validate your external fan selection calculations. 5. Technical Specification Summary Specification / Capability Supported Duct Shapes Round, Rectangular, Flat Oval Fitting Categories
-value, which is then used to find the total pressure loss ( ) using the formula: Each fitting entry is identified by a unique
, provides a sophisticated, cloud-based platform for accessing loss coefficient tables for over 200 fittings. What is the ASHRAE Duct Fitting Database? The DFDB is a comprehensive tool used to determine the External Static Pressure (ESP)
, which is essential for proper fan sizing. Engineers typically: HVAC Simplified Identify the critical path (the longest or most complex duct route).
: Includes tables for supply, exhaust, and common (supply/return) functions. Real-Time Calculations and return air systems
For HVAC design professionals, the is an indispensable resource for ensuring that ductwork designs meet modern performance standards. By leveraging over 200+ fitting data tables, engineers can ensure accurate pressure loss calculations, leading to efficient, quiet, and balanced HVAC systems.
Version 6.00.05 features an optimized engine that allows users to input specific variables: Airflow volume (CFM or L/s) Duct dimensions (inches or mm)
The is a comprehensive tool used by HVAC design engineers to accurately calculate pressure losses across various duct configurations. This specialized update provides an expanded suite of loss coefficient tables for more than 200 round, rectangular, and flat oval duct fittings . By determining the exact External Static Pressure (ESP) of supply, exhaust, and return air systems, the database prevents the over-sizing or under-sizing of vital mechanical plant equipment.