نبذة عن جهاز Anemometer


(e.mansur) #1

Anemometer
هوجهاز يستخدم لحساب CFM وهو معدل تدفق الهواء واليكم الوصف وطريقة الحساب على مروحة مكيف صحراوي

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[RIGHT]Anemometer:

[RIGHT]Is a device used to measure the CFM air flow meter and convert it to imperial to metric If need to measure air flow meter CFM in evaprotor cooling air

[RIGHT] obtain divided air distribution area Divided air distribution area at shown below ,and measure air velocity at many points. This applies to either anemometrs or anemometer,and obtain air flow rate by a sum of average air velocity and air discharge area.

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5

4

3

2

1

10

9

8

7

6[/center]

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[RIGHT]Division steps:

[RIGHT]5.44

[RIGHT]10.12

[RIGHT]3.08

[RIGHT]5.66

[RIGHT]8.79

[RIGHT]3.95

[RIGHT]2.50

[RIGHT]8.80

[RIGHT]6.22

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[RIGHT] 1-measure area a b = 0.34 0.47= 0.16 m

[RIGHT]2-air velocity v = 54.36 9 = 6.04 m sec

[RIGHT]3-air flow rate Q= 6.04 0.16 = 0.96 m sec

[RIGHT] = 0.96 60 = 57.6 m min

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[RIGHT]Press ON and AVERAGE at the same time.

[RIGHT]Release ON frist ,then AVERAGE the LCD will show small printing " ft m" default on the upper right corner and an F on the lower right corner.

[RIGHT]Press HOLD key to change the measuring units to metric system, press AVRERAGE key for imperial measuring units.

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[RIGHT]Press MIN MAX REC key and “s” will show on the LCD. Press hold to conflim and save to change value. At this time the baud rate “2400” appears on the screento be flllowed by step 1 for changing RS232 output.

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Measure by foot and speed used anemometer:

1ft = 12 inch


a= 12 14 =1.1 ft
b= 18.5 12 = 1.5 ft

A = a b = 1.1 1.5 = 1.6 ft

[CENTER]800

2060

1342

1045

1865

911

1045

1660

244[/center]

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Stander unit 3200 cfm :[/left]

[RIGHT]V = 10927 9 = 1219

[RIGHT]Q= 1219 1.6 = 2011

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:)مع تحيات mansur sunbu :slight_smile: