eQuest Model - VAV System gas savings

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When I modeled a measure, conversion of constant volume (or single zone
reheat system) to variable air volume system with VFD fans in eQuest,
gas consumption is being reduced by 70 to 80% (i.e.,savings are 70 to
80%). I don't think this is true. Could any of you please help me on
fixing this issue?



Vempati, Bhaskar's picture
Joined: 2011-10-02
Reputation: 0

All I can think of is tweaking the min variable air volume. Generally, the min air volume in the VAV system is 30%.
FYI: Oregon building code now has VAV min and max in the heating mode, i.e., 30% to 50% instead of constant 30%.


Shekhar, Diwanshu's picture
Joined: 2011-10-02
Reputation: 0