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Fred,<br>
There are actually a few issues here. First, both TMY2 and TMY3
are file formats. The files themselves are simply text files and can
be opened and edited with notepad, Excel, etc. The definition of the
format (what data appears in which column of the data file) is
publicly available:<br>
<br>
for TMY2: <a class="moz-txt-link-freetext" href="http://rredc.nrel.gov/solar/pubs/tmy2/data.html">http://rredc.nrel.gov/solar/pubs/tmy2/data.html</a><br>
for TMY3: <a class="moz-txt-link-freetext" href="http://www.nrel.gov/docs/fy08osti/43156.pdf">http://www.nrel.gov/docs/fy08osti/43156.pdf</a><br>
<br>
Both the TMY2 and TMY3 formats contain fields for global
illuminance. Meteonorm is able to save and export weather files in
the TMY2 format. However, I do not know if it fills in the global
illuminanace fields with data or if it just leaves those fields set
with some default code to indicate that no data is available. If
either a TMY2 or TMY3 file contains data in the global illuminance
fields then TRNSYS Type15 will read and provide that data as output
44 (if you only have one surface on which Type15 is computing solar
radiation).<br>
<br>
Kind regards,<br>
David<br>
<br>
<br>
<div class="moz-cite-prefix">On 3/29/2015 4:01 PM, frédéry lavoye
wrote:<br>
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<div>Dear TRnsys users,<br>
<br>
</div>
I would like to know how generate TMY-3 weather file ?<br>
</div>
<div>I can't manage it with the version of meteonorm I
have...<br>
</div>
I need Global illuminance Output for simulations and I
think that only TMY-3 weather file permit it.<br>
<br>
</div>
Thanks in advance for your answer.<br>
<br>
</div>
Regards,<br>
</div>
Fred.<br>
</div>
<br>
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<pre class="moz-signature" cols="72">--
***************************
David BRADLEY
Principal
Thermal Energy Systems Specialists, LLC
22 North Carroll Street - suite 370
Madison, WI 53703 USA
P:+1.608.274.2577
F:+1.608.278.1475
<a class="moz-txt-link-abbreviated" href="mailto:d.bradley@tess-inc.com">d.bradley@tess-inc.com</a>
<a class="moz-txt-link-freetext" href="http://www.tess-inc.com">http://www.tess-inc.com</a>
<a class="moz-txt-link-freetext" href="http://www.trnsys.com">http://www.trnsys.com</a></pre>
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