What is the equal friction method in duct sizing?
It sizes all duct branches maintaining a constant pressure loss per unit length (typically 0.8 to 1.0 Pa/m in comfort systems), simplifying hydraulic balance.
Calculate circular and rectangular air duct dimensions, airflow velocity (m/s) and pressure drop (Pa/m) using the equal friction method.
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It sizes all duct branches maintaining a constant pressure loss per unit length (typically 0.8 to 1.0 Pa/m in comfort systems), simplifying hydraulic balance.