[Equest-users] "Morning cool down" modeling

[Jacob Goodman]

To all,
I am modeling a building in Colorado where there are many cool 
nights/mornings in the summer. My building cools to 76deg 7am-5pm with a 
unocc setback to 82deg. The designer is proposing an ECM where the HVAC 
will bring in 100% OA from 4am to 7am for "free pre-cooling" to get the 
building to the 76deg setpoint before the occupied temperature set point 
kicks in. This should save a buch of cooling energy that would be needed 
to bring the building to 76deg at system start up. This will only happen 
when the outside temperature is favorable. I have air side economizers 
set up, but I think they will only cool the building to 82deg from 
4am-7am (am I correct?).

Thanks again,
Jacob Goodman


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