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Re: [EnergyPlus_Support] Margin of error between monthly and annual simulation
E+ averages the data over the reporting frequency. If the simulation
time step is less than 1 hour, then you could see an "average" of the
weather data in the output. Try adding these inputs and see if the data
match the weather file. I just tried this for a single day for Jan 2 and
then for July 2 and the data matched the weather file in both cases.
Timestep,
1; !- Number of Timesteps per Hour
ConvergenceLimits,
60; !- Minimum System Timestep (minutes)
Abdul Murad Zainal Abidin wrote:
> Hello,
> I have send an e-mail regarding the above sometime ago but there was
> no feedback.
> I have run monthly and annual simulation simulation using HAMT example
> file with the preset weather file. I noticed that there was a margin
> of error for the outdoor conditions (outdoor dry-bulb and outdoor
> relative humidity) between monthly (e.g. March or November) and the
> annual (March or November sections from the one year simulation)
> output file. These error consistently occur on the first hour (01:00)
> on the fiirst day of every month. Why must there be some margins of
> error when I use the sam weather file?
> Thank you.
> Regards,
> Murad
>
>
--
Richard A. Raustad
Senior Research Engineer
Florida Solar Energy Center
University of Central Florida
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