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<p>TRNBuild does not have a method for specifying a glazing fraction
per orientation. Typically you would draw your windows in SketchUp
along with the rest of the building's geometry. <br>
</p>
<p>I would hesitate to recommend a % glazing factor for a
greenhouse; there are a lot of variables that come into play. In
northern climate greenhouses for example, you often see an
insulated or even earth bermed north wall and you have to balance
the glazing area between getting enough light to the plants and
not losing too much heat at night. In hot climate greenhouses then
cooling is the bigger challenge and that might direct you towards
a different amount of glazing.</p>
<p>When in doubt, test the simulation's sensitivity to the design
variable. Try some simulations with a range of glazing fractions!
<br>
</p>
<p>kind regards,</p>
<p> David</p>
<p><br>
</p>
<div class="moz-cite-prefix">On 02/07/2022 04:01, Zeynep Özcan via
TRNSYS-users wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CAJsqkFixysjNBbHWfQaJYax6YvGJ4zjQgwz=t3OCpW9NSeeugQ@mail.gmail.com">
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<div dir="ltr">Dear Trnsys users,
<div>I am working with a type 56 building model for a
greenhouse, is there a specific ratio or a constant value for
the fraction of windows in external walls (%) for each
orientation? I do not have a specific window area value, so
for example is 0.95 (%) suitable for greenhouse modelling? Do
you have any suggestions? </div>
<div>Kind regards,</div>
<div>Zeynep Ozcan</div>
<div><br>
</div>
</div>
<br>
<fieldset class="moz-mime-attachment-header"></fieldset>
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<pre class="moz-signature" cols="72">--
***************************
David BRADLEY
Principal
Thermal Energy System Specialists, LLC
3 North Pinckney Street - suite 202
Madison, WI 53703 USA
P:+1.608.274.2577
<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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