[Equest-users] DD Wizard Centrifugal Chiller Variable Speed Compressor

[Zachary Barbre via Equest-users]

Equest Users,

I am modeling a university building and experimenting with scenarios to seen how the building's performance changes. In the CHW Plant screen in DD wizard I changed the compressor from variable speed to constant speed. As expected the energy use in the simulation went up, but after I changed it back to variable speed the energy use did not drop back to the previous level. I have replicated it with a couple throwaway models. Is this a bug or did it make an additional change that I do not know about? See the attached picture for the exact spot.

[cid:image004.jpg at 01D1CADE.1B97D1E0]

Thanks,

Zach

--

Zachary Barbre, PE
Energy Engineer

[cid:image001.jpg at 01CEB84D.46EDB860]<http://www.rbgb.com/>
659 Auburn Ave, NE
Suite 259
Atlanta, GA  30312
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