Engineered nozzle airflow rule calculator

The cited nozzle example uses about 33% less air for equivalent blowing capacity.

Units

\dot{V}_{\text{new}} = 0.67 \times \dot{V}_{\text{round}}

Calculator

Enter the values you know and leave one box empty. Calculate finds the empty one, the result or any input.

Given

\dot{V}_{\text{new}} = 0.67 \times 240 = 160.8

Symbol	Meaning	Unit
$\dot{V}_{\text{new}}$	flow with engineered nozzle	cfm
$\dot{V}_{\text{round}}$	flow with round orifice at equivalent blowing duty	cfm

Symbol	Meaning	Unit
$\dot{V}_{\text{new}}$	flow with engineered nozzle	L/s
$\dot{V}_{\text{round}}$	flow with round orifice at equivalent blowing duty	L/s

Results are estimates for study and screening. Check the inputs, units and assumptions before you use them for design, billing or contract decisions.