Excel Link - Ashrae Duct Fitting Database

For engineers seeking the underlying testing methodology, ASHRAE Standard 120-2017 establishes uniform methods for laboratory testing of HVAC ducts and fittings to determine their resistance to airflow. This standard supersedes ANSI/ASHRAE Standard 120-2008 and is updated on a five-year cycle. Compliance with this standard ensures that loss coefficient data is consistent and reliable across different applications.

Note: Using 1 for the match type allows Excel to interpolate between standard ASHRAE values if your exact geometric ratio falls between database entries. Step 4: Automate Velocity Pressure Calculations ashrae duct fitting database excel link

Every elbow, tee, transition, and entry in a duct network disrupts airflow, causing turbulence and pressure drops. The total pressure loss ( ) for a specific fitting is calculated using the formula: Note: Using 1 for the match type allows

The primary tool for current data, accessible via an annual subscription on the ASHRAE Bookstore . import ctypes from ctypes import c_long, c_double import

import ctypes from ctypes import c_long, c_double import xlwings as xw

) for various duct configurations. Manually transferring this data into design spreadsheets is slow and causes errors. Linking the ASHRAE Duct Fitting Database with Microsoft Excel automates your calculations, increases design speed, and ensures compliance with ASHRAE standards. What is the ASHRAE Duct Fitting Database?