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Old 11-23-2008, 10:36 AM   #31
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Static Pressure befor filter or after


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Originally Posted by key1cc View Post
As my tag line at the bottom states.....

Hey Been, you've been talking to Popeye all this time.

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Old 11-23-2008, 03:06 PM   #32
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Static Pressure befor filter or after


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Hey Been, you've been talking to Popeye all this time.
LOL..

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Old 11-23-2008, 10:15 PM   #33
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Static Pressure befor filter or after


For completeness I decided to run and post the corresponding 2nd stage data.

Recall I have a Trane XV95 2-stage variable speed 100k btu natural gas furnace. All the data was generated in the heat mode on the medium setting.

The data from 1st stage:

External static pressure: 0.69
Wattage draw: 365 watts
Temperature Rise: 46F
Corresponding airflow from table: ~1180 CFM.

The data from 2nd stage:

ESP: 1.04
Wattage draw: 660 watts
Temperature Rise: 55F
Airflow?? (Table does not go above 0.9 ESP.)

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Old 11-23-2008, 10:56 PM   #34
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Static Pressure befor filter or after


Fans laws would say at 1.04" you should be at about 1450 CFM.

There is some inaccuracy, due to some fittings become more turbulant at higher CFM.

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