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Thread: All round ductwork?
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01-29-2005, 02:54 PM #14
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Originally posted by dash
12" round,10"X11",and 21"X6",all have the same airflow characteristics ,except velociy which will be less in the 10X11 and even less in the 21X6,assuming the same material.Check your ductolator,to verify.
Well everytime I get a customer that wants to save ceiling height by making the ductwork 2 inches deep by 40 inches wide I tell him it just wont let the air flow right being its all surface area and the air wont flow right.
THATS MY STORY AND IM STICKING TO IT......
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01-29-2005, 03:44 PM #15
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Quote the cost of 2 X 40 and he'll change his mind real quick!Originally posted by dec
Originally posted by dash
12" round,10"X11",and 21"X6",all have the same airflow characteristics ,except velociy which will be less in the 10X11 and even less in the 21X6,assuming the same material.Check your ductolator,to verify.
Well everytime I get a customer that wants to save ceiling height by making the ductwork 2 inches deep by 40 inches wide I tell him it just wont let the air flow right being its all surface area and the air wont flow right.
THATS MY STORY AND IM STICKING TO IT......
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01-29-2005, 07:02 PM #16
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For noise issues you should just size your duct correctly for the proper fpm as well as cfm.....
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