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Anleitung Zusammenfassung
These options can effect performance. For estimated pressure drops on these accessories, consult your local Greenheck representative. AX Upblast AX Vane Section AX Short Casing Hubs and Blades The AX blade shape and hub are designed to move high volumes of air with less power to save on long-term energy costs. The choice of five different hub diameters, along with variations in blade quantities, ensures that the most economical air performance can be achieved. In addition, during the design process, close attention was paid to the “hub to tip” ratios. This is a comparison of the hub diameter to the “tip to tip” dimension of the blades. Different choices of hub to tip ratios further optimize fan performance and provide a cost effective solution by not over sizing a hub to produce required volumes and pressures. The hubs are constructed from cast aluminum and use a taper lock bushing to secure the hub to the motor shaft. Greenheck certifies that the Model AX fan shown herein are licensed to bear the AMCA seal. The ratings shown are based on tests and procedures performed in accordance with AMCA publication 211 and comply with the requirements of the AMCA Certified Ratings Program. Available Hub Sizes (mm) / Number of Blades Size 160 190 275 400 533 (4 or 6 ) (4 or 6) (6 or 9) (6 or 9) (8 or 12) 31 X 36 X 41 X X 47 X X 54 X X X 63 X X X 72 X X 80 X X X 90 X X 103 X X 113 X X X 123 X X 140 X X 160 X X 2 Page HeaderPerformance Manual Guide Page HeaderPerformance Manual Guide How to use this performance manual The performance pages contains information in metric and english units. These are color coded with motor power frequency and motor speed for easy and quick reference in finding air performance, power requirements, and sound information. See back cover for selection example. Model size and hub diameter Total Pressure Axis AX 31-160 4 Blades 12 1 in Pascals (Pa) and 11 Inches Water Gauge (in. wg) 2 Total Pressure 7 3 Static Pressure Impeller Diameter = 12.25 inches (311 mm) Outlet Velocity ft/min = cfm / 0.82 m/s = m./s / 0.08 Tip Speed ft/min = rpm X 3.20 m/s = rpm X 0.98 -Lines of constant static pressure 4 Color coded power frequency and motor speed (rpm)/poles 5 Volume - Axis displays two different units of measure for each power frequency and motor speed. 6 Blade pitch - Shown in 5 degree increments, integral 5 pitches are available between the displayed limits. 7 Sound power (LwA) -Color coded sound power level levels 9 10 are displayed as Sound Power A-Weighted [LwA] Peak Absorbed Power [Bhp/kW (60 Hz), kW (50 Hz)] Sound Pressure [dBA] a percentage of Air density = 1.2 kg/m. Air density = 0.075 lbs/ft. Volume 68 68 68 67 67 67 66 65 69 6 8 3 4 peak power; 100%, 50% and 0%. Use corrections in the Pitch Angle . rpm 5 10 15 20 25 30 35 3500 (Bhp/kW) 0.19/0.14 0.30/0.22 0.43/0.32 0.56/0.42 0.71/0.53 0.88/0.66 1.07/0.80 1770 (Bhp/kW) 0.03/0.02 0.04/0.03 0.06/0.04 0.07/0.05 0.09/0.07 0.11/0.09 0.14/0.10 2900 (kW) 0.08 0.13 0.18 0.24 0.30 0.37 0.45 1450 (kW) 0.01 0.02 0.02 0.03 0.04 0.05 0.06 Inlet Sound rpm LwA dBA 3500 +20 +8.5 1770 --11.5 2900 1450 +13 -5 +1.5 -16.5 Performance shown is for installation Type B: Free inlet, Ducted outlet. Performance ratings do not include the effects of appurtenances in the airstream. The AMCA Certified Ratings Seal applies to air performance ratings only. sound power table to Sound power level ratings are shown in decibels, referred to 10-12 watts calculated per AMCA Standard 301. Values shown are for inlet LwA sound power levels for 100%, 50% and 0% of peak pressure in Installation Type B: Free inlet, Ducted outlet. dBA sound pressure values are weighted with 11.5 dB attenuation for each octave band at 5 feet. find corresponding LwA and dBA levels for a specific power frequency and motor speed. 8 Total Efficiency curves - Curves show total efficiency levels at different performance points. Those curves do not reflect static efficiency levels. 9 Peak Absorbed Power table - Table displays the maximum power required by pitch angle and motor rpm. Values provided are in brake horse power and kilowatts. 10 Sound Power and Sound Pressure table - Table displays the corrections required by motor rpm. 11 Outlet Velocity and Tip Speed formulas - For deriving outlet velocity, use either cfm or m./s in the appropriate Outlet Velocity equation. Tip speed equation is only dependent on motor rpm. 3 Page HeaderAX 31-160 4 Blades Page HeaderAX 31-160 4 Blades Total Pressure Impeller Diameter = 12.25 inches (311 mm) Outlet Velocity ft/min = cfm / 0.82 m/s = m./s / 0.08 Tip Speed ft/min = rpm X 3.20 m/s = rpm X 0.98 Air density = 1.2 kg/m. Air density = 0.075 lbs/ft. Peak Absorbed Power [Bhp/kW (60 Hz), kW (50 Hz)] 68 68 68 67 67 67 66 65 69 Volume Sound Power A-Weighted [LwA] Sound Pressure [dBA] Pitch Angle . rpm 5 10 15 20 25 30 35 3500 (Bhp/kW) 0.19/0.14 0.30/0.22 0.43/0.32 0.56/0.42 0.71/0.53 0.88/0.66 1.07/0.80 1770 (Bhp/kW) 0.03/0.02 0.04/0.03 0.06/0.04 0.07/0.05 0.09/0.07 0.11/0.09 ...