<div dir="ltr">Hi Jean-Pierre,<br><br>I have created a TRNSYS component based on a crops model developed by Graamans et al. (2017). The model has been validated for hydroponic lettuces growing in steady-state conditions under electrical lighting (no natural light). If you are interested, I would be happy to share the model. Please feel free to contact me at my email address.<br><font size="1"><br></font><div><font size="1">Graamans, L., van den Dobbelsteen, A., Meinen, E., & Stanghellini, C. (2017). Plant factories; crop transpiration and energy balance. Agricultural Systems, 153(Supplement C), 138-147. </font><br><br></div><div>Kind regards,<br clear="all"><div><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div dir="ltr"><div dir="ltr"><div style="color:rgb(0,0,0);margin:0cm 0cm 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif"><b><span style="font-size:9pt;font-family:"Arial Unicode MS",sans-serif">Marie-Hélène Talbot</span></b><span style="font-size:8pt;font-family:"Arial Unicode MS",sans-serif">,</span><span style="font-size:8pt"> </span><span style="font-family:"Arial Unicode MS",sans-serif;font-size:10.6667px">M.Sc.A.</span><span style="font-size:10.6667px">|</span><span style="font-family:"Arial Unicode MS",sans-serif;font-size:11px">Étudiante au doctorat</span></div><div style="color:rgb(0,0,0);margin:0cm 0cm 0.0001pt;font-family:Calibri,sans-serif"><span style="font-family:"Arial Unicode MS",sans-serif"><span style="font-size:8pt">Département de génie de la construction<u></u><u></u></span></span></div><div style="color:rgb(0,0,0);margin:0cm 0cm 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif"><span style="font-size:8pt;font-family:"Arial Unicode MS",sans-serif">École de technologie supérieure</span></div></div></div></div></div></div></div></div><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">Le mar. 1 oct. 2019 à 10:43, David BRADLEY via TRNSYS-users <<a href="mailto:trnsys-users@lists.onebuilding.org">trnsys-users@lists.onebuilding.org</a>> a écrit :<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
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<p>Jean-Pierre,</p>
<p> I have recently been finding more papers proposing models for evapotranspiration from plants. I implemented one of them called the Penman-Monteith equation in a Type for a project. The model represents a "reference" evapotranspiration rate but there are
a <i>lot</i> of factors that influence the rate away from the reference value. These might be things like crop type, crop area, crop age, crop management practices, local weather factors (like ongoing droughts or floods). It is possible to find information
about how some of those variables modify the reference rate but in my experience not all of them. The equation was definitely not developed with plants as part of a glazing system in mind but it might give you a first approximation of the evapotranspiration
rate.</p>
<p> Please let me know if you are interested; I can get you some more info about the Type or about the equation.</p>
<p>kind regards,</p>
<p> David</p>
<p><br>
</p>
<div>On 09/30/2019 08:38, Jean-Pierre BEDRUNE via TRNSYS-users wrote:<br>
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<p class="MsoNormal"><span lang="EN-US">Hi all,<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">I intend to modelize a Dual wall made of glazing containing plants.<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">Do you know a Trnsys component able to modelize the evaporation of plants in such a case ?<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">Kind regards,<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal"><span><u></u> <u></u></span></p>
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<p class="MsoNormal" style="line-height:14pt"><b><span style="font-size:10pt;font-family:Arial,sans-serif;color:rgb(31,73,125)">Jean-Pierre BEDRUNE | Ingénieur - Chargé de projet | Mobile : 06 80 87 38 29</span></b><span><u></u><u></u></span></p>
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<pre cols="72">--
***************************
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
<a href="mailto:d.bradley@tess-inc.com" target="_blank">d.bradley@tess-inc.com</a>
<a href="http://www.tess-inc.com" target="_blank">http://www.tess-inc.com</a>
<a href="http://www.trnsys.com" target="_blank">http://www.trnsys.com</a></pre>
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