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Karol,<br>
Without knowing the specifics of which data file you are using,
its hard to give a definitive answer. My understanding is that the
original set of TMY2 weather files are a series of files that were
developed at NREL for 230 or so sites in the US based on something
called the Solmet data base. Only 30 sites actually had measured
data; the rest were modeled, correlated, statistically processed,
etc. The original set of TMY2 data files for those US cities should
not, I think, be confused with the use of the TMY2 file format for
weather files from other cities.<br>
<br>
As for your other question, there is no particular need to create
a file that has the TMY2 format if you don't want to. Type9 is
designed to read an interpolate data files. Radiation data read by
Type9 can then be passed to Type16 for processing and calculation of
radiation falling on other surfaces. This saves you the trouble of
having to figure out where to obtain data values for the fields that
you don't need in the TMY2 format. Type15 (the weather
reader/processor) is really just a combination of Type9 and Type16
glued together internally and given the ability to read a series of
standard file formats (TMY, TMY2, TMY3, E+, etc.)<br>
Kind regards,<br>
David<br>
<br>
<br>
<div class="moz-cite-prefix">On 10/18/2012 05:22, Karol Bandurski
wrote:<br>
</div>
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<div class="WordSection1">
<p class="MsoNormal">Dear All,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">1)<o:p></o:p></p>
<p class="MsoNormal">I have already converted TYM2 data for
Poznan (PL-Poznan-Lawica-123300) from text file to excel
using: <a moz-do-not-send="true"
href="http://sel.me.wisc.edu/trnsys/weather/tmy2data.htm">http://sel.me.wisc.edu/trnsys/weather/tmy2data.htm</a>.<o:p></o:p></p>
<p class="MsoNormal">Some of meteorological data, which are
there, have additional columns named <i>Flag of Data Source</i>.
Dry bulb temperature is one of these data. In my file is
written that <b><u>data source for dry bub temperature is</u></b>
E, and in TYM2 manual (<a moz-do-not-send="true"
href="http://rredc.nrel.gov/solar/pubs/tmy2/PDFs/tmy2man.pdf">http://rredc.nrel.gov/solar/pubs/tmy2/PDFs/tmy2man.pdf</a>)
I have read that it means:<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal" style="text-autospace:none"><span
style="font-size:10.0pt;font-family:"Times New
Roman","serif"">Modeled or estimated, except:
precipitable water, calculated from<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span
style="font-size:10.0pt;font-family:"Times New
Roman","serif"">radiosonde data; dew point
temperature calculated from dry bulb<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span
style="font-size:10.0pt;font-family:"Times New
Roman","serif"">temperature and relative
humidity; and relative humidity<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Times New
Roman","serif"">calculated from dry bulb
temperature and dew point temperature<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><b>Could you explain me what it is mean? I
expected that temperature is measured…<o:p></o:p></b></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">2)<o:p></o:p></p>
<p class="MsoNormal"><b><u>The second issue</u></b> is that I
would like to create my own TYM2 file to run TRNSYS simulation
with my own meteorological data. How should I model e.g.
illuminance… of maybe I don’t need this value if I use in
simulation only:<o:p></o:p></p>
<p class="MsoListParagraph"
style="text-indent:-18.0pt;mso-list:l0 level1 lfo2"><!--[if !supportLists]--><span
style="font-family:Symbol"><span style="mso-list:Ignore">·<span
style="font:7.0pt "Times New Roman"">
</span></span></span><!--[endif]-->Dry bulb temperature,<o:p></o:p></p>
<p class="MsoListParagraph"
style="text-indent:-18.0pt;mso-list:l0 level1 lfo2"><!--[if !supportLists]--><span
style="font-family:Symbol"><span style="mso-list:Ignore">·<span
style="font:7.0pt "Times New Roman"">
</span></span></span><!--[endif]-->Effective sky
temperature,<o:p></o:p></p>
<p class="MsoListParagraph"
style="text-indent:-18.0pt;mso-list:l0 level1 lfo2"><!--[if !supportLists]--><span
style="font-family:Symbol"><span style="mso-list:Ignore">·<span
style="font:7.0pt "Times New Roman"">
</span></span></span><!--[endif]-->Humidity,<o:p></o:p></p>
<p class="MsoListParagraph"
style="text-indent:-18.0pt;mso-list:l0 level1 lfo2"><!--[if !supportLists]--><span
style="font-family:Symbol"><span style="mso-list:Ignore">·<span
style="font:7.0pt "Times New Roman"">
</span></span></span><!--[endif]-->Wind velocity and
direction,<o:p></o:p></p>
<p class="MsoListParagraph"
style="text-indent:-18.0pt;mso-list:l0 level1 lfo2"><!--[if !supportLists]--><span
style="font-family:Symbol"><span style="mso-list:Ignore">·<span
style="font:7.0pt "Times New Roman"">
</span></span></span><!--[endif]-->Atmospheric pressure,<o:p></o:p></p>
<p class="MsoListParagraph"
style="text-indent:-18.0pt;mso-list:l0 level1 lfo2"><!--[if !supportLists]--><span
style="font-family:Symbol"><span style="mso-list:Ignore">·<span
style="font:7.0pt "Times New Roman"">
</span></span></span><!--[endif]-->Solar zenith and
azimuth angle,<o:p></o:p></p>
<p class="MsoListParagraph"
style="text-indent:-18.0pt;mso-list:l0 level1 lfo2"><!--[if !supportLists]--><span
style="font-family:Symbol"><span style="mso-list:Ignore">·<span
style="font:7.0pt "Times New Roman"">
</span></span></span><!--[endif]-->Total surface
radiation,<o:p></o:p></p>
<p class="MsoListParagraph"
style="text-indent:-18.0pt;mso-list:l0 level1 lfo2"><!--[if !supportLists]--><span
style="font-family:Symbol"><span style="mso-list:Ignore">·<span
style="font:7.0pt "Times New Roman"">
</span></span></span><!--[endif]-->Beam surface radiation,<o:p></o:p></p>
<p class="MsoListParagraph"
style="text-indent:-18.0pt;mso-list:l0 level1 lfo2"><!--[if !supportLists]--><span
style="font-family:Symbol"><span style="mso-list:Ignore">·<span
style="font:7.0pt "Times New Roman"">
</span></span></span><!--[endif]-->Angle of incidence for
surface,<o:p></o:p></p>
<p class="MsoListParagraph"
style="text-indent:-18.0pt;mso-list:l0 level1 lfo2"><!--[if !supportLists]--><span
style="font-family:Symbol"><span style="mso-list:Ignore">·<span
style="font:7.0pt "Times New Roman"">
</span></span></span><!--[endif]-->Ground reflectance.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><b>Which data (columns) do I need in TYM2
file to get above values?<o:p></o:p></b></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I will be grateful for any tips!!!<o:p></o:p></p>
<p class="MsoNormal">Regards<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">------------------------------------------------<o:p></o:p></p>
<p class="MsoNormal">Karol Bandurski MSc.<o:p></o:p></p>
<p class="MsoNormal"><span style="background:white" lang="PL"><a
moz-do-not-send="true" href="http://www.ee.put.poznan.pl/"
target="_top"><span
style="color:windowtext;text-decoration:none"
lang="EN-US">Institute of Environmental Engineering</span></a></span><span
style="background:white"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="background:white">Poznan
University of Technology<o:p></o:p></span></p>
<p class="MsoNormal"><span style="background:white" lang="PL"><a
moz-do-not-send="true" href="http://www.ee.put.poznan.pl/"><span
lang="EN-US">www.ee.put.poznan.pl</span></a></span><span
style="background:white"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="background:white" lang="PL"><a
moz-do-not-send="true" href="http://www.put.poznan.pl/">www.put.poznan.pl</a><o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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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>
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