<p dir="ltr">Just adding to Neil's comment regards crashing due to over pressurisation. You should do some runs with various timesteps. Usually, the shorter the time step the more stable.</p>
<div class="gmail_quote">On 24 May 2019 16:04, "Neil Shankland" <<a href="mailto:Neil.Shankland@burohappold.com">Neil.Shankland@burohappold.com</a>> wrote:<br type="attribution"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Segoe UI",sans-serif;color:#44546a">Hi Karol,<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Segoe UI",sans-serif;color:#44546a"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Segoe UI",sans-serif;color:#44546a">The trick to getting ApacheHVAC and Macroflo to work together in IES VE is the use of a flow controller set to zero at an appropriate
point in the HVAC network. For your example, the HVAC network would contain a single zone where you want to add mechanical supply. The upstream side of this zone would have a flow controller set to provide the required flowrate and the downstream side would
have a flow controller set to zero volume flow, on continuously. With Macroflo and HVAC both active in ApacheSim, the mechanical supply will be introduced, as defined in the HVAC network, and Macroflo will calculate what subsequently happens to that air (provided
there are sufficient Macroflo openings to prevent the run crashing due to overpressurisation). Hope this helps.<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Segoe UI",sans-serif;color:#44546a"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Segoe UI",sans-serif;color:#44546a">Regards,<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Segoe UI",sans-serif;color:#44546a"><u></u> <u></u></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Segoe UI",sans-serif;color:#44546a">Neil
</span><span style="font-size:10.0pt;font-family:"Segoe UI",sans-serif;color:black"><u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#44546a"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#44546a"><img width="612" height="69" style="width:6.375in;height:.7187in" id="m_-117524735913364929Picture_x0020_1" src="cid:image001.png@01D51249.37ECB530" alt="Leeds 30-E-footer-regional.png"><u></u><u></u></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Segoe UI",sans-serif;color:#44546a"><u></u> <u></u></span></p>
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<p class="MsoNormal"><b><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif"> Bldg-sim <<a href="mailto:bldg-sim-bounces@lists.onebuilding.org" target="_blank">bldg-sim-bounces@lists.<wbr>onebuilding.org</a>>
<b>On Behalf Of </b>Karol BANDURSKI via Bldg-sim<br>
<b>Sent:</b> 24 May 2019 15:47<br>
<b>To:</b> 'Chris Yates' <<a href="mailto:chris.malcolm.yates@gmail.com" target="_blank">chris.malcolm.yates@gmail.com</a><wbr>><br>
<b>Cc:</b> <a href="mailto:bldg-sim@lists.onebuilding.org" target="_blank">bldg-sim@lists.onebuilding.org</a><br>
<b>Subject:</b> Re: [Bldg-sim] MarcoFlow and ApacheHVAC coupling<u></u><u></u></span></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal"><strong><span lang="PL" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#a80000">** External Email **</span></strong><span lang="PL" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#a80000"><u></u><u></u></span></p>
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<p class="MsoNormal"><span lang="PL"><u></u> <u></u></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d">Hi Chris,<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d">Thank you for your advice!<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d">For now the issue is that we would like to do it as good as possible using IES VE.<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d">Kind regards,<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d">Karol<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><b><span lang="PL" style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span lang="PL" style="font-size:11.0pt;font-family:"Calibri",sans-serif"> Chris Yates [<a href="mailto:chris.malcolm.yates@gmail.com" target="_blank">mailto:chris.malcolm.yates@<wbr>gmail.com</a>]
<br>
<b>Sent:</b> Friday, May 24, 2019 4:38 PM<br>
<b>To:</b> Karol Bandurski <<a href="mailto:karol.bandurski@put.poznan.pl" target="_blank">karol.bandurski@put.poznan.pl</a><wbr>><br>
<b>Cc:</b> <a href="mailto:bldg-sim@lists.onebuilding.org" target="_blank">bldg-sim@lists.onebuilding.org</a><br>
<b>Subject:</b> Re: [Bldg-sim] MarcoFlow and ApacheHVAC coupling<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="PL"><u></u> <u></u></span></p>
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<p class="MsoNormal"><span lang="PL">Hi Karol<u></u><u></u></span></p>
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<p class="MsoNormal"><span lang="PL"><u></u> <u></u></span></p>
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<p class="MsoNormal"><span lang="PL">You could try one of the "RoomAirSettings" models in E+.<u></u><u></u></span></p>
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<p class="MsoNormal"><span lang="PL">There should be an example file in the E+ installation directory that can be run "out of the box". You could mess with this. Rather than coupling network airflow and hvac network these models are typically based on 1d finite
elements or fixed (known) temperature gradients and don't require the zone to be split horizontally.<u></u><u></u></span></p>
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<p class="MsoNormal"><span lang="PL"><u></u> <u></u></span></p>
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<p class="MsoNormal"><span lang="PL">Best<u></u><u></u></span></p>
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<p class="MsoNormal"><span lang="PL"><u></u> <u></u></span></p>
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<p class="MsoNormal"><span lang="PL">Chris<u></u><u></u></span></p>
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<p class="MsoNormal"><span lang="PL"> <u></u><u></u></span></p>
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<p class="MsoNormal"><span lang="PL"><u></u> <u></u></span></p>
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<p class="MsoNormal"><span lang="PL">On Fri, May 24, 2019 at 11:27 AM Karol Bandurski via Bldg-sim <<a href="mailto:bldg-sim@lists.onebuilding.org" target="_blank">bldg-sim@lists.onebuilding.<wbr>org</a>> wrote:<u></u><u></u></span></p>
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<p class="MsoNormal"><span lang="PL">Dear All<br>
<br>
My question refer to IES VE.<br>
<br>
Do you know some description how couple Atrium MacroFlow calculation, based<br>
on temperature stratification with flow forced by fans defined in<br>
ApacheHVAC?<br>
<br>
We prepare some model with students. Atrium is divided on three air zones<br>
and MacroFlow calculate flows caused by temperature differences, but we<br>
would like to add there also flow caused by mechanical system, e.g. inlet in<br>
the lowest part and outlets in windows in the highest part of Atrium.<br>
<br>
Kind regards,<br>
Karol<br>
------------------------------<wbr>------------------------------<wbr>--------<br>
Karol BANDURSKI M. Sc.<br>
Faculty of Civil and Environemntal Engeneering<br>
Division of Heating, Air Conditioning and Air Protection<br>
Poznan University of Technology<br>
<a href="https://eur02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.researchgate.net%2Fprofile%2FKarol_Bandurski&data=02%7C01%7CNeil.Shankland%40burohappold.com%7Cbe09fc72911441eb5e1408d6e056c88c%7C50ee6418869e48f5a9823607fcee1e1d%7C0%7C0%7C636943060671447761&sdata=%2FU1IlAAOcYwgKju%2F9XX%2BiUyEZZoVL2lhlIlq%2Bmxj4Mk%3D&reserved=0" target="_blank">https://www.researchgate.net/<wbr>profile/Karol_Bandurski</a><br>
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