<div>Hi, Adriana. You are welcome. Convection opaque surface ptn means the convection heat transfer through the partition wall. it means the temperature of  living room inner surface which is in contact with other zone(zones) increases, if we assume the convective heat transfer coefficent the same. This means the solar gain, is getting through your living room "more easily" in respect when the doors closed.</div> <div> </div> <div>Instead of having the year cooling and heating, I suggest you should check for each time step, one hour or ten minutes, depenting on your presetting,  the energy balance. Is that for every time step ventilation load is increased or only in very hot summer ?   it happens only in the afternoon or all the day? also some other parameters are important to understand the whole situation.</div> <div> </div> <div>Regards,</div> <div> </div> <div>Hua<br><br></div> <div class="gmail_quote">2014-02-27 19:49 GMT+01:00 Arianna Sdei <span dir="ltr"><<a href="mailto:A.Sdei@brighton.ac.uk" target="_blank">A.Sdei@brighton.ac.uk</a>></span>:<br> <blockquote style="BORDER-LEFT:#ccc 1px solid;MARGIN:0px 0px 0px 0.8ex;PADDING-LEFT:1ex" class="gmail_quote"> <div lang="EN-GB" vlink="purple" link="blue"> <div> <p class="MsoNormal"><span style="FONT-FAMILY:'Calibri','sans-serif';COLOR:#1f497d;FONT-SIZE:11pt">Hi Hua, <u></u><u></u></span></p> <p class="MsoNormal"><span style="FONT-FAMILY:'Calibri','sans-serif';COLOR:#1f497d;FONT-SIZE:11pt"><u></u> <u></u></span></p> <p class="MsoNormal"><span style="FONT-FAMILY:'Calibri','sans-serif';COLOR:#1f497d;FONT-SIZE:11pt">thank you very much. I have checked and it looks like with the doors open the ventilation load reduces while the convection through opaque surfaces ptn (which I don’t know what it means) increases. Does that make any sense? <u></u><u></u></span></p> <p class="MsoNormal"><span style="FONT-FAMILY:'Calibri','sans-serif';COLOR:#1f497d;FONT-SIZE:11pt"><u></u> <u></u></span></p> <p class="MsoNormal"><span style="FONT-FAMILY:'Calibri','sans-serif';COLOR:#1f497d;FONT-SIZE:11pt">Achim, <u></u><u></u></span></p> <p class="MsoNormal"><span style="FONT-FAMILY:'Calibri','sans-serif';COLOR:#1f497d;FONT-SIZE:11pt"><u></u> <u></u></span></p> <p class="MsoNormal"><span style="FONT-FAMILY:'Calibri','sans-serif';COLOR:#1f497d;FONT-SIZE:11pt">The absolute cooling increases from 340 kWh/year to 421 kWh/year when the doors are closed. <u></u><u></u></span></p> <p class="MsoNormal"><span style="FONT-FAMILY:'Calibri','sans-serif';COLOR:#1f497d;FONT-SIZE:11pt"><u></u> <u></u></span></p> <p class="MsoNormal"><span style="FONT-FAMILY:'Calibri','sans-serif';COLOR:#1f497d;FONT-SIZE:11pt">Can anyone help to clarify why?<u></u><u></u></span></p> <p class="MsoNormal"><span style="FONT-FAMILY:'Calibri','sans-serif';COLOR:#1f497d;FONT-SIZE:11pt"><u></u> <u></u></span></p> <p class="MsoNormal"><span style="FONT-FAMILY:'Calibri','sans-serif';COLOR:#1f497d;FONT-SIZE:11pt">Thank you,<u></u><u></u></span></p> <p class="MsoNormal"><span style="FONT-FAMILY:'Calibri','sans-serif';COLOR:#1f497d;FONT-SIZE:11pt"><u></u> <u></u></span></p> <p class="MsoNormal"><span style="FONT-FAMILY:'Calibri','sans-serif';COLOR:#1f497d;FONT-SIZE:11pt">Regards,<u></u><u></u></span></p> <p class="MsoNormal"><span style="FONT-FAMILY:'Calibri','sans-serif';COLOR:#1f497d;FONT-SIZE:11pt"><u></u> <u></u></span></p> <p class="MsoNormal"><span style="FONT-FAMILY:'Calibri','sans-serif';COLOR:#1f497d;FONT-SIZE:11pt">Arianna<u></u><u></u></span></p> <p class="MsoNormal"><span style="FONT-FAMILY:'Calibri','sans-serif';COLOR:#1f497d;FONT-SIZE:11pt"><u></u> <u></u></span></p> <p class="MsoNormal"><span style="FONT-FAMILY:'Calibri','sans-serif';COLOR:#1f497d;FONT-SIZE:11pt">  <u></u><u></u></span></p> <p class="MsoNormal"><span style="FONT-FAMILY:'Calibri','sans-serif';COLOR:#1f497d;FONT-SIZE:11pt"><u></u> <u></u></span></p> <div style="BORDER-BOTTOM:medium none;BORDER-LEFT:medium none;PADDING-BOTTOM:0cm;PADDING-LEFT:0cm;PADDING-RIGHT:0cm;BORDER-TOP:#b5c4df 1pt solid;BORDER-RIGHT:medium none;PADDING-TOP:3pt"> <p class="MsoNormal"><b><span style="FONT-FAMILY:'Tahoma','sans-serif';FONT-SIZE:10pt" lang="EN-US">From:</span></b><span style="FONT-FAMILY:'Tahoma','sans-serif';FONT-SIZE:10pt" lang="EN-US"> </span><span style="FONT-SIZE:10pt" lang="ZH-CN">索华</span><span style="FONT-FAMILY:'Tahoma','sans-serif';FONT-SIZE:10pt" lang="EN-US"> [mailto:<a href="mailto:suohua1505@gmail.com" target="_blank">suohua1505@gmail.com</a>] <br> <b>Sent:</b> 27 February 2014 12:57<br><b>To:</b> Arianna Sdei<br><b>Subject:</b> Re: [esp-r] Re: cooling<u></u><u></u></span></p></div> <div> <div class="h5"> <p class="MsoNormal"><u></u> <u></u></p> <div> <p class="MsoNormal">Dear Adriana, I suggest use RESULT ANALYSIS to check the energy balance of the zone, ESP-r will split , in every time step, into infiltration, ventilation, storage, convection etc. Just check one tipical heating or cooling time step. In this way, you can check which parameter increases which does not, it may be helpful for you furture analysis.<u></u><u></u></p> </div> <div> <p class="MsoNormal"> <u></u><u></u></p></div> <div> <p class="MsoNormal">Regards,<u></u><u></u></p></div> <div> <p class="MsoNormal"> <u></u><u></u></p></div> <div> <p style="MARGIN-BOTTOM:12pt" class="MsoNormal">Hua <u></u><u></u></p></div> <div> <p class="MsoNormal">2014-02-27 13:28 GMT+01:00 Arianna Sdei <<a href="mailto:A.Sdei@brighton.ac.uk" target="_blank">A.Sdei@brighton.ac.uk</a>>:<u></u><u></u></p> <div> <div> <p class="MsoNormal"><span style="FONT-FAMILY:'Calibri','sans-serif';COLOR:#1f497d;FONT-SIZE:11pt">Dear Achim, </span><u></u><u></u></p> <p class="MsoNormal"><span style="FONT-FAMILY:'Calibri','sans-serif';COLOR:#1f497d;FONT-SIZE:11pt"> </span><u></u><u></u></p> <p class="MsoNormal"><span style="FONT-FAMILY:'Calibri','sans-serif';COLOR:#1f497d;FONT-SIZE:11pt">Thank you for your comment. I do have an afn defined and I am only imposing a cooling set point temperature on the control file for the living room during the day and the bedroom at night. There is no night time cooling at the moment. The cooling load seems to increase slightly in his absolute value while the heating reduces quite a lot . I will send you more detailed figures shortly,</span><u></u><u></u></p> <p class="MsoNormal"><span style="FONT-FAMILY:'Calibri','sans-serif';COLOR:#1f497d;FONT-SIZE:11pt"> </span><u></u><u></u></p> <p class="MsoNormal"><span style="FONT-FAMILY:'Calibri','sans-serif';COLOR:#1f497d;FONT-SIZE:11pt">regards</span><u></u><u></u></p> <p class="MsoNormal"><span style="FONT-FAMILY:'Calibri','sans-serif';COLOR:#1f497d;FONT-SIZE:11pt">Arianna </span><u></u><u></u></p> <p class="MsoNormal"><span style="FONT-FAMILY:'Calibri','sans-serif';COLOR:#1f497d;FONT-SIZE:11pt"> </span><u></u><u></u></p> <div> <div style="BORDER-BOTTOM:medium none;BORDER-LEFT:medium none;PADDING-BOTTOM:0cm;PADDING-LEFT:0cm;PADDING-RIGHT:0cm;BORDER-TOP:#b5c4df 1pt solid;BORDER-RIGHT:medium none;PADDING-TOP:3pt"> <p class="MsoNormal"><b><span style="FONT-FAMILY:'Tahoma','sans-serif';FONT-SIZE:10pt" lang="EN-US">From:</span></b><span style="FONT-FAMILY:'Tahoma','sans-serif';FONT-SIZE:10pt" lang="EN-US"> <a href="mailto:esp-r-bounces@lists.strath.ac.uk" target="_blank">esp-r-bounces@lists.strath.ac.uk</a> [mailto:<a href="mailto:esp-r-bounces@lists.strath.ac.uk" target="_blank">esp-r-bounces@lists.strath.ac.uk</a>] <b>On Behalf Of </b>Achim Geissler<br> <b>Sent:</b> 25 February 2014 19:31<br><b>To:</b> <a href="mailto:esp-r@lists.strath.ac.uk" target="_blank">esp-r@lists.strath.ac.uk</a> Club<br><b>Subject:</b> [esp-r] Re: cooling</span><u></u><u></u></p></div></div> <div> <div> <p class="MsoNormal"> <u></u><u></u></p> <p class="MsoNormal">Dear Arianna,<u></u><u></u></p> <div> <p class="MsoNormal"> <u></u><u></u></p></div> <div> <p class="MsoNormal">the information about the model is a bit scarce.<u></u><u></u></p></div> <div> <p class="MsoNormal">- do you have an afn defined?<u></u><u></u></p></div> <div> <p class="MsoNormal">- how is this affected by closing doors?<u></u><u></u></p></div> <div> <p class="MsoNormal">- could closing doors reduce night time cooling (if any)?<u></u><u></u></p></div> <div> <p class="MsoNormal">- how is the AC modelled? Do ducts run through zones that may become warmer by closing doors?<u></u><u></u></p></div> <div> <p class="MsoNormal">- how do surface temperatures of the living room change after closing doors (i.e., does the bedroom become hot and what is the construction between these zones)?<u></u><u></u></p></div> <div> <p class="MsoNormal">- is the cooling load absolutely higher or relatively?<u></u><u></u></p></div> <div> <p class="MsoNormal"> <u></u><u></u></p></div> <div> <p class="MsoNormal"><span lang="ZH-CN">…</span> and maybe a few more I am not thinking about, right now.<u></u><u></u></p></div> <div> <p class="MsoNormal"> <u></u><u></u></p></div> <div> <p class="MsoNormal">Cheers,<u></u><u></u></p></div> <div> <p class="MsoNormal">Achim<u></u><u></u></p></div> <div> <p class="MsoNormal"> <u></u><u></u></p></div> <div> <p class="MsoNormal"> <u></u><u></u></p></div> <div> <p class="MsoNormal"> <u></u><u></u></p> <div> <div> <p class="MsoNormal">On Feb 25, 2014, at 6:23 PM, Arianna Sdei <<a href="mailto:A.Sdei@brighton.ac.uk" target="_blank">A.Sdei@brighton.ac.uk</a>> wrote:<u></u><u></u></p></div> <p style="MARGIN-BOTTOM:12pt" class="MsoNormal"><u></u> <u></u></p> <div> <div> <p class="MsoNormal"><span style="FONT-FAMILY:'Calibri','sans-serif';FONT-SIZE:11pt">Dear All,</span><u></u><u></u></p></div> <div> <p class="MsoNormal"><span style="FONT-FAMILY:'Calibri','sans-serif';FONT-SIZE:11pt"> </span><u></u><u></u></p></div> <div> <p class="MsoNormal"><span style="FONT-FAMILY:'Calibri','sans-serif';FONT-SIZE:11pt">I am running some simulations in a multizone model of a single storey house with one bedroom and one living room. I am controlling some air conditioning in the living room only from May to September. So, I thought that by closing the door of the living room I would get a lower cooling load. But actually if I close all doors in the house I get a slightly higher cooling load and a lower heating load. Do you know why? Let me know,</span><u></u><u></u></p> </div> <div> <p class="MsoNormal"><span style="FONT-FAMILY:'Calibri','sans-serif';FONT-SIZE:11pt"> </span><u></u><u></u></p></div> <div> <p class="MsoNormal"><span style="FONT-FAMILY:'Calibri','sans-serif';FONT-SIZE:11pt">Regards,</span><u></u><u></u></p></div> <div> <p class="MsoNormal"><span style="FONT-FAMILY:'Calibri','sans-serif';FONT-SIZE:11pt"> </span><u></u><u></u></p></div> <div> <p class="MsoNormal"><b><span style="FONT-FAMILY:'Calibri','sans-serif';COLOR:#002060;FONT-SIZE:14pt">Arianna Sdei</span></b><u></u><u></u></p></div> <div> <p class="MsoNormal"><span style="FONT-FAMILY:'Calibri','sans-serif';COLOR:#002060;FONT-SIZE:11pt"> </span><u></u><u></u></p></div> <div> <p class="MsoNormal"><span style="FONT-FAMILY:'Calibri','sans-serif';COLOR:#002060;FONT-SIZE:11pt">Research Fellow IFORE (Innovation For Renewal)</span><u></u><u></u></p></div> <div> <p class="MsoNormal"><span 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style="COLOR:purple">http://www.brighton.ac.uk/is/spam/</span></a><br>___________________________________________________________<br> _______________________________________________<br>esp-r mailing list<br><a href="mailto:esp-r@lists.strath.ac.uk" target="_blank"><span style="COLOR:purple">esp-r@lists.strath.ac.uk</span></a><br><a href="http://lists.strath.ac.uk/mailman/listinfo/esp-r" target="_blank"><span style="COLOR:purple">http://lists.strath.ac.uk/mailman/listinfo/esp-r</span></a></span><u></u><u></u></p> </div></div> <p class="MsoNormal"> <u></u><u></u></p> <div> <div> <p class="MsoNormal"><span style="FONT-FAMILY:'Helvetica','sans-serif';FONT-SIZE:9pt"><a href="mailto:achim.geissler@intergga.ch" target="_blank">achim.geissler@intergga.ch</a></span><u></u><u></u></p></div> <div> <p class="MsoNormal"><span style="FONT-FAMILY:'Helvetica','sans-serif';FONT-SIZE:9pt"> </span><u></u><u></u></p></div> <div> <p class="MsoNormal"><span style="FONT-FAMILY:'Helvetica','sans-serif';FONT-SIZE:9pt"> </span><u></u><u></u></p></div> <p class="MsoNormal"> <u></u><u></u></p></div> <p class="MsoNormal"> <u></u><u></u></p></div> <p class="MsoNormal"><br>___________________________________________________________<br>This email has been scanned by MessageLabs' Email Security<br>System on behalf of the University of Brighton.<br>For more information see <a href="http://www.brighton.ac.uk/is/spam/" target="_blank">http://www.brighton.ac.uk/is/spam/</a><br> ___________________________________________________________<u></u><u></u></p></div></div></div> <div> <div> <p class="MsoNormal"><br>___________________________________________________________<br>This email has been scanned by MessageLabs' Email Security<br>System on behalf of the University of Brighton.<br>For more information see <a href="http://www.brighton.ac.uk/is/spam/" target="_blank">http://www.brighton.ac.uk/is/spam/</a><br> ___________________________________________________________<u></u><u></u></p></div></div></div> <p class="MsoNormal"><br>_______________________________________________<br>esp-r mailing list<br><a href="mailto:esp-r@lists.strath.ac.uk" target="_blank">esp-r@lists.strath.ac.uk</a><br><a href="http://lists.strath.ac.uk/mailman/listinfo/esp-r" target="_blank">http://lists.strath.ac.uk/mailman/listinfo/esp-r</a><u></u><u></u></p> </div> <p class="MsoNormal"><br><br clear="all"><br>-- <u></u><u></u></p> <div> <p class="MsoNormal"><i>Suo Hua</i><u></u><u></u></p></div> <div> <p class="MsoNormal"><i> </i><u></u><u></u></p></div> <div> <p class="MsoNormal"><i>Ph.D Student in Tecnologia e Progetto per l'Ambiente Costruito/Technology and Design for Environment and Building</i><u></u><u></u></p></div> <div> <p class="MsoNormal"><i> </i><u></u><u></u></p></div> <div> <p class="MsoNormal"><i>Il Dipartimento B.E.S.T.Dipartimento di Scienza e Tecnologie dell’Ambiente Costruito/ The Department of Building Environment Science & Technology</i><u></u><u></u></p></div> <div> <p class="MsoNormal"><i> </i><u></u><u></u></p></div> <div> <p class="MsoNormal"><i>Politecnico Di Milano</i><u></u><u></u></p></div> <p class="MsoNormal"><i><br><a href="mailto:Email%3Ahua.suo@mail.polimi.it" target="_blank">Email:hua.suo@mail.polimi.it</a></i> <i><br><br>Tele:3890994652</i> <br>___________________________________________________________<br> This email has been scanned by MessageLabs' Email Security<br>System on behalf of the University of Brighton.<br>For more information see <a href="http://www.brighton.ac.uk/is/spam/" target="_blank">http://www.brighton.ac.uk/is/spam/</a><br> ___________________________________________________________<u></u><u></u></p></div></div></div> <div> <div class="h5"><br clear="both">___________________________________________________________<br>This email has been scanned by MessageLabs' Email Security<br>System on behalf of the University of Brighton.<br>For more information see <a href="http://www.brighton.ac.uk/is/spam/" target="_blank">http://www.brighton.ac.uk/is/spam/</a><br> ___________________________________________________________<br></div></div></div></blockquote></div><br><br clear="all"><br>-- <br> <div><i>Suo Hua</i></div> <div><i> </i></div> <div><i>Ph.D Student in Tecnologia e Progetto per l'Ambiente Costruito/Technology and Design for Environment and Building</i></div> <div><i> </i></div> <div><i>Il Dipartimento B.E.S.T.Dipartimento di Scienza e Tecnologie dell’Ambiente Costruito/ The Department of Building Environment Science & Technology</i></div> <div><i> </i></div> <div><i>Politecnico Di Milano</i></div><i><br><a href="mailto:Email%3Ahua.suo@mail.polimi.it" target="_blank">Email:hua.suo@mail.polimi.it</a></i> <i><br><br>Tele:3890994652</i>