[Equest-users] Constant Volume to Variable Volume
Jordan Goldsmith
jordang at ncat.org
Mon Dec 21 16:05:23 PST 2009
Hello, I would like to say first that so far the forum has been very
helpful!
I am trying to model a CV system as a base case and then a VAV as a change
case. In the DD Wizard I am using the Multi-zone system with HW heat. For
a CV system I set the minimum VAV to 100% and set the fans to vane-axial.
For the VAV system I am going back and setting the minimum to 30% and the
fans to VSD.
I feel the CV system is fairly close, but the VAV system is coming up with
too low of a gas consumption (A 70% difference).
1. Am I taking the proper approach?
2. What would cause this large of a change? (A decrease in OA
required?)
Thank you for any help you can give me,
Jordan Goldsmith, E.I.T.
National Center for Appropriate Technology
3040 Continental Drive, Butte MT 59702
406-494-8651
jordang at ncat.org
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