Custom Search
Air Ducts Friction Loss Diagram
Major loss diagram air ducts - Imperial units ranging 10 000 - 400 000 cfm
Sponsored Links
Friction loss (head loss) in standard air ducts are indicated in the diagram below:
The diagram is based on standard air 0.075 lb/ft3 in clean round galvanized metal ducts.
- 1 inch water = 248.8 N/m2 (Pa)= 0.0361 lb/in2 (psi) = 25.4 kg/m2 = 0.0739 in mercury
- 1 ft3/min (cfm) = 1.7 m3/h = 0.47 l/s
- 1 ft/min = 5.08x10-3 m/s
- 1 inch = 25.4 mm = 2.54 cm = 0.0254 m = 0.08333 ft
Example - Friction Loss in Air Duct
The friction loss in a 60 inches duct with air flow 100,000 cfm can be estimated to approximately 0.4 inches water per 100 feet duct as shown in the diagram below. The air velocity can be estimated to approximately 5,000 feet per minute.
Sponsored Links
Related Topics
- Ventilation - Systems for ventilation and air handling - air change rates, ducts and pressure drops, charts and diagrams and more
Sponsored Links
Related Documents
- Air Ducts Friction Loss Diagram - Major loss diagram air ducts - SI units
- Air Ducts Friction Loss Diagram - Major loss diagram air ducts - Imperial units ranging 10 - 100 000 cfm
- D'Arcy-Weisbach Equation for Pressure and Head Loss - The D'Arcy-Weisbach formula can be used to calculate pressure or head loss due to friction in ducts, pipes and tubes
- Major loss in Ducts, Tubes and Pipes - Major loss - head loss or pressure loss - due to friction in ducts, pipes and tubes
