<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"> <head> <meta http-equiv="Content-Type" content="text/html; charset=us-ascii"> <meta name="ProgId" content="Word.Document"> <meta name="Generator" content="Microsoft Word 14"> <meta name="Originator" content="Microsoft Word 14"> <link rel="File-List" href="cid:filelist.xml@01CEECE8.764E3DD0"><style></style> </head> <body lang="EN-CA" link="blue" vlink="purple" style="tab-interval:36.0pt"> <div class="WordSection1"> Hi Arianna, <o:p></o:p> <o:p> </o:p> If your goal is merely to characterize energy loss from infiltration in a single house, you may find the AIM2 model is easier-to-use and more accurate than a flow network. <o:p></o:p> <o:p> </o:p> Info on configuration & theoretical basis: <a href="https://espr.trac.cvsdude.com/esp-r/wiki/EmpiricalAirInfiltrationModel">https://espr.trac.cvsdude.com/esp-r/wiki/EmpiricalAirInfiltrationModel</a><o:p></o:p> <o:p> </o:p> - Alex<o:p></o:p> <o:p> </o:p> <o:p> </o:p> <div> <div style="border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm"> From: esp-r-bounces@lists.strath.ac.uk [mailto:esp-r-bounces@lists.strath.ac.uk] On Behalf Of Arianna Sdei Sent: November 28, 2013 14:37 To: esp-r@lists.strath.ac.uk Subject: [esp-r] air flow network<o:p></o:p> </div> </div> <o:p> </o:p> Dear ESP-r community,<o:p></o:p> <o:p> </o:p> I am trying to set up an air flow network using the measured air flow rate from pressure tests. To do that I am substituting power law flow components to cracks. I have calculated the coefficient a in the equation : Q = a dP ^b using the measured ACH and I am using b=0.66 but when simulating I get a too high heating load (over 30000 kWh/year for a single storey house) . Does anybody know why this happens and if there is another way to use the measured ACH from the pressure tests to set up the infiltration rate using an air flow network? Thank you <o:p></o:p> <o:p> </o:p> Regards,<o:p></o:p> <o:p> </o:p> Arianna   <o:p></o:p> <o:p> </o:p> Arianna Sdei<o:p></o:p> <o:p> </o:p> Research Fellow IFORE (Innovation For Renewal) <o:p></o:p> <o:p> </o:p> UNIVERSITY OF BRIGHTON<o:p></o:p> <o:p> </o:p> Moulsecoomb, Lewes Road, Brighton, BN2 4AT<o:p></o:p> <o:p> </o:p> direct line: 0044 (0)2036747268<o:p></o:p> <o:p> </o:p> mobile: 0044 (0)7981739024<o:p></o:p> <o:p> </o:p> <o:p> </o:p> ___________________________________________________________ This email has been scanned by MessageLabs' Email Security System on behalf of the University of Brighton. For more information see <a href="http://www.brighton.ac.uk/is/spam/">http://www.brighton.ac.uk/is/spam/</a> ___________________________________________________________<o:p></o:p> </div> </body> </html>