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SolarInterested

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Spam Stomper
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Reply with quote  #61 
Quote:
Originally Posted by stmbtwle
...You guys with your air collectors and big insulated ducts might bear that in mind... a 1/2" pipe is a LOT easier to insulate from the elements than a big duct (also easier to hide from the wife).

Also the wall penetrations required are so much smaller.

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Both temperature rise and airflow are integral to comparing hot air collectors

Rick H Parker

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Reply with quote  #62 
"You guys with your air collectors and big insulated ducts might bear that in mind... a 1/2" pipe is a LOT easier to insulate from the elements than a big duct (also easier to hide from the wife).  Once in the house you could use a fan coil or baseboard heater to distribute the heat."

That big duct has a lower surface to volume ratio, which has insulation value in itself. However the big duct is committing space and materials to transport a lower value material. Lower value in terms of energy density. It is real hard to beat the heat carrying capacity of water.

Rick H Parker

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Rick H Parker
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