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RE: weather files

Dear Marc,

You should use another mode of Type16 (which corresponds to another IISiBat proforma) with TRNSYS TMY files. Type16g ("Total Horiz. , normal beam known") will do the job.
You should connect output 4 of Type89c to input 1 of Type16g and output 3 of Type89c to input 2 of Type16g. Don't forget to connect outputs 99 and 100 to inputs 3 and 4 as well!

Please note that TMY files available on our website are generated from monthly average data - they do not use hourly measurements.
ASHRAE has created a worldwide weather files database (IWEC, International Weather for Energy Calculation). You can purchase the CD form ASHRAE (www.ashrae.org). The files are also available free of charge for EnergyPlus users. EnergyPlus is a free building simulation software sponsored by the US DOE. You can find more information on the web: http://www.eere.energy.gov/buildings/energy_tools/energyplus/. The direct link to weather files is http://www.eere.energy.gov/buildings/energyplus/cfm/weatherdata_int.cfm

Of course, if you need "officialy approved files" or very high quality data, you will have to contact the local meteorological institute (E.g. IWEC files use estimated -not measured- solar radiation).


Regards,

Michaël Kummert

_________________________________________________________

Michaël Kummert

Solar Energy Laboratory - University of Wisconsin-Madison
1303 Engr Res Bldg, 1500 Engineering Drive
Madison, WI 53706

Tel: +1 (608) 263-1589
Fax: +1 (608) 262-8464
E-mail: kummert@engr.wisc.edu

SEL Web Site: http://sel.me.wisc.edu
TRNSYS Web Site: http://sel.me.wisc.edu/trnsys



-----Original Message-----
From: owner-trnsys@relay.doit.wisc.edu
[mailto:owner-trnsys@relay.doit.wisc.edu] On Behalf Of Marc Abadie
Sent: Wednesday, June 11, 2003 01:56
To: trnsys
Subject: weather files


Hi all,

I'm playing with the TMY files i found on the website, it's
great, there's plenty of locations but.... who knows the
relationship between :

- the outputs of the TMY files i.e. Direct normal solar
radiation and Global solar radiation on horizontal and,
- the inputs of type 16i (radiation processor) i.e. Total
radiation on horizontal and Diffuse radiation on horizontal

Thank you all,

-- Marc ABADIE
leptab - univ. of La Rochelle, France