// multi-utility computation suite · offline · instant · precise
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eng.ventilation-air-velocity Calculator
Calculates mine ventilation air velocity, quantity, and power from duct dimensions, static pressure, and fan efficiency. Mine ventilation must dilute diesel exhaust, dust, and methane below threshold limit values — methane requires dilution to below 1% of airstream.
Inputs
Airway Area M2
Reference formula or conversion factor shown for context.
Air Quantity M3 S
Count or number of items involved.
Airway Length M
Linear measurement. Ensure consistent units: 1 m = 1,000 mm = 3.281 ft.
Friction Factor
A multiplier applied in the calculation.
Results
air velocity (m/s)
Reference formula or conversion factor shown for context.
pressure drop estimate (Pa)
Pressure lost to friction as fluid moves through the pipe or system. Higher drop = more pumping power required. Reduce by using larger pipes, fewer bends, or lower flow velocity.
fan power estimate (kW)
The value at the specified point or condition.
Q = A × v
Reference formula or conversion factor shown for context.
metal mine limit
Sample size or count used in the calculation.
Atkinson k range
The difference between the maximum and minimum values.