Ashrae Duct Fitting Database 2016 !!top!! -

: Users enter parameters like flow rate, width, height, and radius ratio to receive velocity, velocity pressure, loss coefficient ( Cocap C sub o ), and total pressure loss. Key Features of Version 6.0 (2016 Era)

) as the most accurate source for fitting losses compared to simplified friction charts or "ductulators". Available Versions & Formats Web/Cloud Access : The primary 2016 release shifted toward a cloud-based annual subscription

: Select the specific geometry (e.g., a 90∘90 raised to the composed with power mitered elbow vs. a 90∘90 raised to the composed with power pleated elbow). Input Design Parameters : Airflow Rate ( ): The volume of air moving through the duct. ashrae duct fitting database 2016

The DFDB is not an isolated tool; it is a core data source that integrates seamlessly into the modern Building Information Modeling (BIM) workflow. This integration ensures that duct system calculations are always based on authoritative, peer-reviewed data.

Each entry features pictorial outlines or 3D illustrations, helping engineers quickly identify the correct fitting type. Project Management: : Users enter parameters like flow rate, width,

Browse fittings visually, view schematic representations, and select multiple items for batch calculations. The fitting sketches help identify the correct configuration before performing calculations.

For elbows, the ratio of the centerline radius to the duct diameter/width. Retrieve Coefficient : The database generates the value based on these inputs. 3. Manual Calculation (Verification) Once you have the coefficient ( a 90∘90 raised to the composed with power pleated elbow)

Fan selection is heavily dependent on total static pressure. If an engineer underestimates the pressure loss from fittings, the selected fan will operate at a higher speed than intended to meet airflow requirements. This pushes the fan to the right on its performance curve, often resulting in higher noise levels and increased energy use. The DFDB helps ensure the initial fan selection is accurate, mitigating acoustical issues downstream.