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Behrang,<br>
Each data file format (whether it is *.epw, *.tm2, *.tm3, etc.)
has its own set of data fields (raw data values). Two common fields
are the global horizontal radiation (beam + sky diffuse radiation
falling on a horizontal surface) and direct normal solar radiation
(beam radiation incident on a surface that is always normal to the
beam radiation vector). *.epw files are EnergyPlus format weather
files. The definitions of their fields can be found in the
EnergyPlus documentation set. The definition for the TMY2 fields can
be found in a document at: <a class="moz-txt-link-freetext" href="http://rredc.nrel.gov/solar/pubs/tmy2/">http://rredc.nrel.gov/solar/pubs/tmy2/</a>. <br>
<br>
TRNSYS processes the raw data from the file and outputs various
solar radiation quantities that can be used as the inputs to other
components. The definition of those outputs can be found either in
the proforma of the weather reader/processor component (likely
Type15) or in the appropriate section of the
04-MathematicalReference manual.<br>
regards,<br>
David<br>
<br>
<br>
<div class="moz-cite-prefix">On 09/16/2015 12:36, Behrang Talebi
wrote:<br>
</div>
<blockquote
cite="mid:CAKA9sWwQmsGy_zRbL3SpeyAmmRiKw=h8k9voiRwcx_mtXW-NXg@mail.gmail.com"
type="cite">
<div dir="ltr">Dear Manager
<div><br>
</div>
<div>I have difficulty finding the TMY weather data file for
Montreal.</div>
<div>I have a verified model built in TRNSYS and i need to use
the same weather data in my hand calculation.</div>
<div>The weather file that i have for my model is .epw which is
very confusing in terms of solar gains.</div>
<div>I was checking your weather data manual and realized that
the TMY and TMY2 weather file only use two values for the
solar gains which are horizental and normal reading. I tried
to find the TMY file online for montreal, canada but wasn't
successful.</div>
<div>I would really appreciate if you could tell me how can i
find the file and also if tell me by horizontal you mean the
total horizontal gain or is it only defused radiation in the
sky. </div>
<div><br>
</div>
<div>Thank you in advance for your time and help</div>
<div>Best Regards </div>
<div>Behrang Talebi</div>
<div><br>
</div>
</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>
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