Systems for ventilation and air handling - air change rates, ducts and pressure drops, charts and diagrams and more.
Typical air duct velocities in applications like ventilation systems or compressed air systems.
A major friction loss diagram for air ducts - Imperial units ranging 10 - 100 000 cfm.
A major friction loss diagram for air ducts - in imperial units ranging 10 000 - 400 000 cfm.
Head loss or major loss in air ducts - equations and online calculator for rectangular and circular ducts - Imperial and SI units.
The influence of temperature and air pressure on major friction loss.
Minor loss coefficient diagrams for air ductwork, bends, expansions, inlets and outlets - SI units.
Required duct area vs. air flow.
Standard size of circular ventilation air ducts.
The equal friction method for sizing air ducts is easy and straightforward to use.
Calculate velocities in circular and rectangular ducts - imperial and SI-units - online calculator.
Calculate pressure loss - or head loss - in ducts, pipes or tubes.
Rectangular equivalent diameter for air flows between 100 - 50000 cfm.
Minor pressure and head loss in pipes vs. equivalent length in tubes and duct systems.
Velocity diagram for rectangular air ducts - metric units.
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