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Re: [EnergyPlus_Support] creating 'real' weather files - Wind/solar data



Paul,

Please take a look at page three of the attached document and under the section "Solar and Shading Calculations" you'll find that E+ calculates all the radiation values needed from your location and geometry input. I was confused as to how E+ calculated radiation values at first as well when I saw that the standard weather files have no radiation data and then I stumbled upon this document.

Hope this helps.

Regards,

Arslan
coop Student
greenAdvance Inc.

On Tue, Jun 16, 2009 at 10:29 AM, chainsaw367 <chainsaw367@xxxxxxxxxxx> wrote:


Hi everyone,

I am a relatively new E+ user, i have inherited an E+ model of a historic building, for which i am trying to put together a weather file using 'real' data, i have temperature and realtive humidty measured from the site, so these are not a problem.

I have been told that wind and solar information are also important, i would like to know how E+ uses these variables in the model...? I have found some wind/solar data for local weather stations, but there are problems, like the solar data was only recorded until the start of 2007, and the diffuse horizontal radiation has been recorded at zero for the whole year, and i cannot seem to find out if this is a real measurement, or that it has not been measured.

The only E+ output i am interested in is the indoor T and RH if this makes a difference. Also are there any other important variables i need to consider to include in a weather file?

Thank you for any help

Paul Lankester




--
Arslan Djumaev,
Architectural R&D Engineer
greenAdvance Inc.
605 Northgate Ave.
Waterloo, ON N2L4R1
Cell: (519) 721 5392
www.greenadvance.ca


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