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Re: [EnergyPlus_Support] High cooling energy values.
Are you forgetting that "cooling" energy when converted to power is
influenced by the COP of the system? The PTAC has a COP = 3. In heating
mode, the PTAC uses an electric heating coil with COP = 1. The heating
load can be much different than the cooling load. Report out the outdoor
dry-bulb temperature to see the impact on heating/cooling energy (Report
Variable,*,Outdoor Dry Bulb,hourly;). It's -0.33C outside in winter and
29-33C in summer. I would expect heating energy to be greater than
cooling energy.
Deepak Gv wrote:
>
> Hello Everyone,
>
> I am involved in the simulation of Window blinds. I have been
> performing some simulations for simple blinds system. I am having a
> 6'X6' window on an 10' X 11' wall. From the output results that i am
> getting, I observe that the Sensible cooling energy values are much
> higher than the Total HVAC electric demand for the building. Once I go
> to Sensible heating for a different design day, I observe that the
> Sensible heating energy is equal to the Total HVAC electric demand.(
> After converting the energy values in joules to power (watt) ).
>
> Also for the designed office room I observe that the heating load
> (HVAC) values seem to be a higher than expected.( Around 1300 W/ hour)
> as compared to cooling load of 390 W / hour. The difference in
> interior temperature and the exterior temperature being of the ratio
> of 1:2 .
>
> I would be attaching the Idf editor file as well as the excel sheet
> along.
>
> Whole Building:Total HVAC Electric Demand [W](Hourly)
> Thank you
>
> G V DEEPAK
>
> Graduate Research Assistant
> M. E. Rinker, Sr. School of Building Construction
> University Of Florida
>
> [Non-text portions of this message have been removed]
>
>
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