Inclined Airfoil
Found 3 free book(s)
11. FAN NOISE PREDICTION - Pennsylvania State University
www.mne.psu.eduAirfoil blades Lowest Moderate Very efficient Backward Inclined Blades Lower Moderate Forward Inclined Blades Moderate Lowest Low pressure drop applications Radial Blades High High Axial Vane Higher than centrifugal Can be high, depends on flow obstructions Very efficient Tube More than vane “ ...
5. FANS AND BLOWERS - Bureau of Energy Efficiency
www.beeindia.gov.inAirfoil, backward 79–83 curved/inclined Modified radial 72–79 Radial 69–75 Pressure blower 58–68 Forward curved 60–65 Axial fan Vane axial 78–85 Tube axial 67–72 Propeller 45–50 TABLE 5.2 FAN EFFICIENCIES Type of fan Peak Efficiency Range
USF Centrifugal Fan Performance Supplement
content.greenheck.comSteel Backward Inclined Centrifugal Wheels Steel Airfoil Centrifugal Wheels Class I Class II Class I Class II 7-10 1.0 1.0 — — 12 1.5 1.8 — — 13 2.1 2.5 — — 15 3.5 3.7 — — 16 5.3 6.3 — — 18 8.9 10.2 9.8 11.1 20 12.4 14.2 13.3 20.1 22 22.4 22.4 24.0 24.0 24 31.8 34.4 33.3 33.3 27 46.0 49.8 49.7 49.7 30 71.8 87.3 78.4 88.8 33 ...