Re: [EnergyPlus_Support] Real Weather

[Jim McNally <jim_mcnally@xxxxxxxxx>]

Hi Dan,
Thanks for answering my posting.
I have an immediate need for historic data from 2000-to-present for Chicago - O'Hare Airport [KORD] would be fine.
I note that the weather files posted on the eere site has cloud-cover data [no radiation values] whereas the .epw files have radiation calculated.
Going forward, my goal is to use E+ in a near-real-time mode, but the weather file is the snag. Is there a script or publication available that relates cloud-cover to the radiation terms? 

Regards,
  Jim
Jim McNally, PE




----- Original Message ----
From: "Crawley, Drury" <Drury.Crawley@xxxxxxxxxx>
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
Sent: Friday, October 26, 2007 8:16:16 AM
Subject: RE: [EnergyPlus_Support] Real Weather

We have created weather data for the US (1961-2005) in EPW format for a
few locations. The sources: for 1961-1990, it's essentially the same
sites as the TMY2s, the National Solar Radiation Data Base (NSRDB). For
1991-2005, it's those sites plus another 1100+ locations--the new NSRDB
that you can download from the NCDC (www.ncdc.noaa. gov). These 1400+
locations will be the source for the new TMY3s... not sure what the
schedule is for that, expecting 400-800 locations in that data set.

We also have the real-time weather data on the E+ site:
http://www.eere. energy.gov/ buildings/ energyplus/ cfm/weatherdata/ weather_
request.cfm
But it currently does not have solar data calculated-- we're working on
that in the next month or so.

If it's one or two US locations, we can provide the historical data.
Contact me separately.


____________ _________ _________ __

From: EnergyPlus_Support@ yahoogroups. com
[mailto:EnergyPlus_Support@ yahoogroups. com] On Behalf Of jim_mcnally
Sent: Friday, October 26, 2007 9:09 AM
To: EnergyPlus_Support@ yahoogroups. com
Subject: [EnergyPlus_ Support] Real Weather

I would like to use E+ with real weather for real years on an on-going 
basis. The weather data I have seen has been fabricated (i.e. TMY2). 
Are there .epw files available with actual weather data?

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