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Ductulator Usage

Ductulator Usage

Ductulator Usage

(OP)
If you are sizing a duct supply for 2" w.g. what friction loss unit do you line up with the air volume. Is it .02, .2, or 2? Additionally I'm looking for a good easy to use HVAC load computer program. Any recomendations?

RE: Ductulator Usage

Is the external static pressure to be 2" w.g.? By external I mean everything from the supply to the return of the unit.
I am not sure what you are asking so rather than try to answer and look stupid I'll just wait for some clarification. :)
  

RE: Ductulator Usage

For your first question, to size an air duct for 2.0" wg(of friction loss)/100 feet of duct, align the 2.0" with your desired airflow.

For your second question, EnergyPro is an easy to use Windows-based program.  CHVAC is an easy DOS-based program using the Manual J method.

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