<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="http://www.w3.org/TR/REC-html40"> <head> <META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=us-ascii"> <meta name=Generator content="Microsoft Word 11 (filtered medium)"> <style>  </style> </head> <body lang=EN-US link=blue vlink=purple> <div class=Section1> Dear All,<o:p></o:p> <o:p> </o:p> I am studying a theoretical problem using ESP-r. My model comprises of two zones: target zone and a bounding zone and the common surface between the zones is called “le”.  I have run two simulations: The first one is using free floating control. In Fig.1 (the attached file) the outside surface temperature of “le” for the target zone and the inside surface temperature of “le” for the bounding zone is plotted which the two curves are the same.<o:p></o:p> <o:p> </o:p> In the second simulation I have assigned a specific temperature profile (by means of temporal file in model context) to “le” as a control file for the bounding zone and plot its surface temperature like above by two different ways. (Inside surface of bounding zone and outside surface of the target zone). In this case there is a difference between the curves.<o:p></o:p> <o:p> </o:p> Now my question is that since the surface temperature node is fixed in the matrix why we have this discrepancy between the curves in Fig.2 ?<o:p></o:p> And also which of these tow much this curve has affected the zone air dry bulb of the target zone?<o:p></o:p> <o:p> </o:p> Many thanks,<o:p></o:p> Mohammad Mirsadeghi<o:p></o:p> <o:p> </o:p> <o:p> </o:p> </div> </body> </html>