<div dir="ltr">Thanks for the suggestion Christian. Where the temperatures are concerned I was able to get hourly values from the website <a href="http://climate.canada.gc.ca">climate.canada.gc.ca</a>, however only hourly meteorological data was available. Where solar radiation is concerned I could only get daily data. My current challenge is that I need to build a custom weather file for 2019 that is readable by TRNSYS to validate a model. I know that I can use the Type 9e input in TRNSYS, and for the meteorological data, it would work perfectly as I have the hourly data, however I do not have the hourly solar data to feed into Type 9e. My challenge is to convert this daily solar radiation into hourly radiation data.<div><br></div><div>Thanks,</div><div>Craig</div><div><div><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><b><br></b></div></div></div><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Tue, Dec 1, 2020 at 7:01 PM Dr.-Ing. Karl-Christian Rauch i.R. <<a href="mailto:rauch-muenster@t-online.de">rauch-muenster@t-online.de</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="auto">Hi Craig,</div><div dir="auto">perhaps you give you a try to look at </div><div dir="auto">ASHRAE Handbook 1985 Fundamentals (SI-Edition).</div><div dir="auto">Chapter 26 Table 2 and Table 3. In the text you will find calculation examples for generating hourly values out of design dry-bulb temperature and mean daily range (see Table 1, Chapter 24), and Chapter 26, Table 3 (hourly) percentage of the Daily range. This same hourly percentage is also used in program NBSLD (NBS, Tamami Kusuda), where you give the dry-bulb temp. and the mean daily range in the input data.</div><div dir="auto"><br></div><div dir="auto">Kind regards</div><div dir="auto">Christian</div><div dir="auto"><br></div><div dir="auto"><br></div><div dir="auto">Dr.-Ing. Karl-Christian Rauch i.R.</div><div dir="auto">Ladestr. 22</div><div dir="auto">48324 Sendenhorst</div><div dir="auto"><br></div><div dir="auto"><br></div><div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">David BRADLEY via TRNSYS-users <<a href="mailto:trnsys-users@lists.onebuilding.org" target="_blank">trnsys-users@lists.onebuilding.org</a>> schrieb am Di. 1. Dez. 2020 um 22:41:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div>
<p>Craig,</p>
<p> I would try and find an hourly data file for a location that is
near to the RETScreen location. TRNSYS reads half a dozen or so
different weather data file syntaxes and there is a data base of
Canadian weather in *.epw format that has a pretty extensive site
list. There is a component in Trnsys that will generate hourly
data based on monthly averages but not one that will do so based
on daily data.</p>
<p>kind regards,</p>
<p> David</p>
<p><br>
</p>
<div>On 12/01/2020 11:51, Craig Francis via
TRNSYS-users wrote:<br>
</div>
<blockquote>
<div dir="ltr">Hi Everyone:
<div>I am new to TRNSYS and looking for a bit of help around
constructing a weather file readable by TRNSYS. I have some
NASA weather data for a site that I extracted from RETScreen,
however these are daily data. Is there anyway to have TRNSYS
convert these to say hourly data, or data consistent with the
simulation steps?</div>
<div>Thanks in advance.</div>
<div><br>
</div>
<div>Craig</div>
<div><br>
<div>
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David BRADLEY
Principal
Thermal Energy Systems Specialists, LLC
3 North Pinckney Street - suite 202
Madison, WI 53703 USA
P:+1.608.274.2577
F:+1.608.278.1475
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