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[EnergyPlus_Support] DOE Reference Building, Elementary School, Chicago problem with NoEconomizer uni
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- Subject: [EnergyPlus_Support] DOE Reference Building, Elementary School, Chicago problem with NoEconomizer uni
- From: "hnoboam" <homero.noboa@xxxxxxxxx>
- Date: Wed, 16 May 2012 16:16:34 -0000
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I am running the Elementary School, Chicago model from the DOE Reference buildings (after converting to E+7). When I run it, E+ reports 12K warnings, mostly repeats of these two:
** Warning ** Coil:Cooling:DX:SingleSpeed "PSZ-AC_2:5_COOLC DXCOIL" - Air-cooled condenser inlet dry-bulb temperature below 0 C. Outdoor dry-bulb temperature = -10.00
** ~~~ ** ... Occurrence info = Chicago Ohare Intl Ap IL USA TMY3 WMO#=725300, 01/01 07:52 - 07:54
** Warning ** Coil:Cooling:DX:SingleSpeed "PSZ-AC_2:5_COOLC DXCOIL" - Full load outlet air dry-bulb temperature < 2C. This indicates the possibility of coil frost/freeze. Outlet temperature = -3.99 C.
** ~~~ ** ...Occurrence info = Chicago Ohare Intl Ap IL USA TMY3 WMO#=725300, 01/01 07:52 - 07:54
The economizer type is "NoEconomizer".
Why the Controller does not limit the OA flow to prevent the coil from freezing?
What is the model missing?
I posted the file, in the file section of our group as: ES_Chicago.idf .
Thanks for any help
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