Greenheck Fan manual Selection Example and Warranty, AX 31-160 4 Blades

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Selection Example and Warranty

Performance:

Volume - 0.5 m³/s

Pressure - 170 Pa Static Pressure

Power Frequency - 50 Hz

Results:

Following the constant static pressure line a size 31 with 160 hub and 4 blades needs:

15 degree blade pitch setting

2900 rpm motor

From the chart

The operating efficiency is between 55 and 57%

Using 2900 Motor rpm and Peak Absorbed Power Table

• 0.18 kW peak absorbed power

Sound power falls between 68 and 66 LwA for the color matched 1770 rpm. Using the Inlet Sound table and estimating 67 LwA with 2900 rpm, the calculated sound power and pressure are:

Sound Power of 80 LwA

Sound Pressure of 68.5 dBA

AX 31-160 4 Blades

 

 

Impeller Diameter = 12.25 inches (311 mm)

 

ft/min = cfm / 0.82

 

Outlet Velocity

Total

m/s = m³/s / 0.08

Pressure

ft/min = rpm X 3.20

Tip Speed

 

m/s = rpm X 0.98

 

65

68

67

 

 

67

 

66

68

68

 

 

67

 

69

Air density = 1.2 kg/m³

Volume

Air density = 0.075 lbs/ft³

 

 

 

 

 

 

 

 

 

 

 

Sound Power A-Weighted [LwA]

Peak Absorbed Power [Bhp/kW (60 Hz), kW (50 Hz)]

 

 

 

 

 

Sound Pressure [dBA]

 

 

 

 

 

Pitch Angle º

 

 

 

 

 

Inlet Sound

 

 

rpm

5

10

15

20

25

30

35

 

rpm

LwA

 

dBA

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

 

3500

+20

 

+8.5

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

 

1770

-

 

-11.5

2900

(kW)

0.08

0.13

0.18

0.24

0.30

0.37

0.45

 

2900

+13

 

+1.5

1450

(kW)

0.01

0.02

0.02

0.03

0.04

0.05

0.06

 

1450

-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.

Building Value in Air

Greenheck delivers value to mechanical engineers by helping them solve virtually any air quality challenges their clients face with a comprehensive selection of

top quality, innovative air- related equipment. We offer extra value to contractors by providing easy-to-install, competitively priced, reliable products that arrive on time.

And building owners and occupants value the energy efficiency, low maintenance and quiet dependable operation they experience long after the construction project ends.

Our Warranty

Greenheck warrants this equipment to be free from defects in material and workmanship for a period of one year from the purchase date. Any units or parts which prove defective during the warranty period will be replaced at our option when returned to our factory, transportation prepaid. Motors are warranted by the motor manufacturer for a period of one year. Should motors furnished by Greenheck prove defective during this period, they should be returned to the nearest authorized motor service station. Greenheck will not be responsible for any removal or installation costs.

As a result of our commitment to continuous improvement, Greenheck reserves the right to change specifications without notice.

Prepared to Support Green Building Efforts

Supplement AX July 2004 R Copyright © 2004 Greenheck Fan Corp.

P.O. Box 410 • Schofield, WI 54476-0410 • Phone (715) 359-6171 • greenheck64 .com

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Contents ModelsAX HighPagePerformanceHeader Axial Fans Hubs and BladesHow to use this performance manual PerformancePage Header Manual GuideVolume AXPage31-Header160 4 BladesAX 31-160 6 Blades HeaderAXPage36-Header160 4 Blades AXPage36-Header160 6 Blades AX 41-160 6 Blades AXPage41Header-160 4 Blades AXPage41-Header160 6 Blades AX 41-160 6 Blades AXPage41-Header190 4 Blades AXPage41-Header190 6 Blades AX 41-190 6 Blades AXPage47-Header160 4 Blades Volume AXPage47-Header160 6 Blades AX 47-160 6 BladesAXPage47-Header190 4 Blades AXPage47-Header190 6 Blades AX 47-190 6 Blades AXPage54-Header160 4 Blades AXPage54-Header160 6 Blades AX 54-160 6 Blades AXPage54-Header190 4 Blades AXPage54-Header190 6 Blades AX 54-190 6 Blades AXPage54-Header275 6 Blades AXPage54-Header275 9 Blades AX 54-275 9 Blades AXPage63-Header160 4 Blades AXPage63-Header160 6 Blades AXPage63-Header190 4 Blades AX 63-190 6 Blades BladesAX 63-275 6 Blades AXPage63-Header275 9 Blades AX 63-275 9 Blades AXPage72-Header190 4 Blades AXPage72-Header190 6 Blades AX 72-190 6 Blades AX 72-275 6 Blades AXPage72-Header275 9 Blades AX 72-275 9 Blades AX 80-190 4 Blades AXPage80-Header190 6 Blades AX 80-190 6 Blades AX 80-275 6 Blades AXPage80-Header275 9 Blades AX 80-275 9 Blades AX 80-400 6 Blades AXPage80-Header400 9 Blades AX 80-400 9 Blades AXPage90-Header275 6 Blades AXPage90-Header275 9 Blades AX 90-275 9 Blades AXPage90-Header400 6 Blades AXPage90-Header400 9 Blades AX 90-400 9 Blades AX 103-275 6 Blades AXPage103Header-275 9 Blades AX 103-275 9 Blades AX 103-400 6 Blades AXPage103Header-400 9 Blades AX 103-400 9 Blades AXPage113Header-275 6 Blades AXPage113Header-275 9 Blades AX 113-275 9 Blades AX 113-400 6 Blades AXPage113Header-400 9 Blades AX 113-400 9 Blades AXPage113Header-533 8 Blades AXPage113Header-533 12 BladesAX 113-533 12 Blades AX 123-400 6 Blades AXPage123Header-400 9 BladesAX 113-533 12 Blades AX 123-533 8 Blades AXPage123Header-533 12 BladesAX 123-400 9 Blades AXPage140Header-400 6 Blades AXPage140Header-400 9 BladesAX 123-533 12 Blades AX 140-533 8 Blades Header AXPage140Header-533 12 BladesAX 140-400 9 Blades AXPage160Header-400 6 Blades AXPage160Header-400 9 Blades AX 160-400 9 Blades AXPage160Header-533 8 Blades AXPage160Header-533 12 BladesAX 160-533 12 Blades Selection Example and Warranty AX 31-160 4 Blades

AX specifications

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