The is a specialized engineering software tool used to calculate pressure losses for various HVAC duct fittings. It provides authoritative loss coefficient data based on the ASHRAE Handbook—Fundamentals. Core Functionality
Optimizing HVAC Design with ASHRAE Duct Fitting Database Version 6.00.05
Advanced Calculation EngineThe software doesn't just provide a static number. It calculates the loss coefficient based on the Reynolds number and relative roughness of the duct material. This ensures that whether you are working with galvanized steel, plastic, or flexible duct, the results are tailored to your specific materials.
Fixed calculation errors in specific fittings such as ER2-2 and SD5-3 to ensure alignment with standard text files. Database Synchronization: Restored missing table data for fittings like CD3-3 and CD3-5. Carmel Software Essential Features for Design Engineers ashrae duct fitting database version. 6.00.05
Fully compatible with 64-bit Windows 10 and Windows 11 environments.
: Increased allowable input ranges for dimensions like diameter, height, and width for several fittings, including SR4-3 , ER4-3 , and CR3-17 .
Modern purchasers receive a one-year subscription for web-based access, requiring only an internet connection and a modern browser. Mobile Flexibility: Use the companion Duct Fitting Database Lite app on iOS for quick field calculations. Why It Matters The is a specialized engineering software tool used
Total all fitting losses along with straight duct friction to establish your total fan static pressure requirements. Conclusion
Suppose a site measurement shows total static pressure 0.6 in. w.g. above design value. Using the database, you can systematically check each fitting's design C vs. as-built conditions. A common discovery: short-radius elbows installed instead of long-radius, raising C from 0.15 to 0.45.
Choose the main category matching your design layout from the primary menu (e.g., Rectangular Supply Junctions or Round Exhaust Elbows). 2. Locate the Fitting Code It calculates the loss coefficient based on the
: Fixed specific mathematical errors in previous iterations, such as corrections to ER2-2 and SD5-3 to align digital tables with standard text files.
The database categorizes fittings systematically to match real-world construction practices:
loss coefficient table that occurred during the transition from version 6.00.04. Carmel Software Core Capabilities of the DFDB This version maintains the foundational features of the ASHRAE Duct Fitting Database Comprehensive Coverage : Includes loss coefficient tables for over 200 round, rectangular, and flat oval duct fittings Pressure Loss Calculation
Version 6.00.05 optimizes the internal algorithms that interpolate data points between complex fitting geometries, reducing calculation discrepancies in non-standard duct dimensions. Why Version 6.00.05 Matters to HVAC Engineers Energy Efficiency & Compliance