[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [EnergyPlus_Support] Re: Problem with ISHRAE weather data
All the EPWs of the ISHRAE weather data have been fixed and are
now available on the EnergyPlus web site:
http://www.eere.energy.gov/buildings/energyplus/cfm/weather_data3.cfm/region=2_asia_wmo_region_2/country=IND/cname=India
----- Forwarded by Drury Crawley/EE/DOE on 02/03/2006 04:29 PM -----
Drury Crawley
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
01/31/2006 05:20 cc:
PM Subject: Re: [EnergyPlus_Support] Re: Problem with
ISHRAE weather data(Document link: Drury Crawley)
We have determined that the ISHRAE source data were not in
TMY2 format. This did make the direct and diffuse solar values
incorrect. We have determined what the correct units are
and will be posting new .EPWs in the next day or so.
(Watch this email list for an update.)
Dru Crawley
"Paul Reeves"
<paulreeves5@xxxxxxxxx> To: EnergyPlus_Support@xxxxxxxxxxxxxxx
Sent by: cc:
EnergyPlus_Support@yaho Subject: [EnergyPlus_Support] Re: Problem with ISHRAE
ogroups.com weather data
01/30/2006 10:48 PM
Please respond to
EnergyPlus_Support
--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, Linda Lawrie <linda@l...>
wrote:
>
> We have not heard this about ISHRAE weather data.
>
> How did you determine they are 3X larger than possible? (i.e.,
what
> are you using to determine "max possible"?)
>
>
> Linda
>
Linda,
I arrived at the "3X larger than possible" observation based on the
assumption that the solar data is for planet Earth and that we still
have some atmosphere.
Sorry, I couldn't resist that one. But really, if you look at any of
the ISHRAE data sets (or at least most), you'll notice that the ET
direct normal solar radiation is on the order of 5000 Wh/m2 whenever
the sun is "up". The terrestrial direct normal solar radiation
values are often above 3000 Wh/m2, or appoximately 3 times what is
possible here.
To be honest, I haven't used the EPW data sets very much, so I might
be missing something, but all the other data sets I've looked at make
sense.
Paul
The primary EnergyPlus web site is found at:
http://www.energyplus.gov
The group web site is:
http://groups.yahoo.com/group/EnergyPlus_Support/
Attachments are not allowed -- please post any files to the appropriate
folder in the Files area of the Support Web Site.
EnergyPlus Documentation is searchable. Open EPlusMainMenu.idf and press
the "search" button.
YAHOO! GROUPS LINKS
Visit your group "EnergyPlus_Support" on the web.
To unsubscribe from this group, send an email to:
EnergyPlus_Support-unsubscribe@xxxxxxxxxxxxxxx
Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
The primary EnergyPlus web site is found at:
http://www.energyplus.gov
The group web site is:
http://groups.yahoo.com/group/EnergyPlus_Support/
Attachments are not allowed -- please post any files to the appropriate folder in the Files area of the Support Web Site.
EnergyPlus Documentation is searchable. Open EPlusMainMenu.idf and press the "search" button.
Yahoo! Groups Links
<*> To visit your group on the web, go to:
http://groups.yahoo.com/group/EnergyPlus_Support/
<*> To unsubscribe from this group, send an email to:
EnergyPlus_Support-unsubscribe@xxxxxxxxxxxxxxx
<*> Your use of Yahoo! Groups is subject to:
http://docs.yahoo.com/info/terms/