<HTML dir=ltr><HEAD> <META http-equiv=Content-Type content="text/html; charset=unicode"> <META content="MSHTML 6.00.6000.16915" name=GENERATOR></HEAD> <BODY> <DIV id=idOWAReplyText37598 dir=ltr> <DIV dir=ltr> <DIV><FONT face=Calibri color=#000000>Dear ESP-r users,</FONT></DIV> <DIV> </DIV> <DIV><FONT face=Calibri>I am now operating ESP-r in the windows XP. My issues are as follows:</FONT> </DIV> <DIV> </DIV> <P class=MsoNormal style="MARGIN: 0cm 0cm 10pt"><FONT face=Calibri>Firstly, the Cp database within ESP-r is proposed to be used for low-rise buildings (up to 3 storeys). If my modelling case is placed in the 8<SUP>th</SUP> level above the ground which means the node height is about 30m. I wonder how the Cp value is calculated. <SPAN> </SPAN></FONT></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 10pt"><FONT face=Calibri>Secondly, the ESP-r cookbook suggests that it’s better to place a boundary node at the height of each opening to the outside. If nodes and connections are at different heights, then the pressure difference will also include stack effects. My case is that I set the connection height the same as the boundary node and is lower than the internal node (0.8m). The results showed that the neutral pressure difference at connection shift to 10 pa while the stack pressure at connection is zero and the zero heat gain is applied. I would like to know where can I find more information regarding the equations used in the airflow network calculation? </FONT></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 10pt"><FONT face=Calibri>Finally, I try to use the CFD module within ESP-r. I found that once I defined the .dfd file in the modelling case, the simulation will run the CFD even I choose not to activate CFD during the simulation.<SPAN>  </SPAN>I wonder if something wrong with the program or it is due to my operation system.</FONT></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 10pt"><FONT face=Calibri></FONT> </P> <P class=MsoNormal style="MARGIN: 0cm 0cm 10pt"><FONT face=Calibri>Regards,</FONT></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 10pt"><FONT face=Calibri>Pei-Chun (Ingrid), Liu</FONT></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 10pt"> </P> <P class=MsoNormal style="MARGIN: 0cm 0cm 10pt"><FONT face=Calibri></FONT> </P></DIV></DIV> <DIV id=idSignature52783 dir=ltr> <DIV><FONT face="Times New Roman" color=#000000 size=3><FONT size=2>PhD Student<BR>Sustainable Research Building<BR>School of the Built Environment<BR>University of Nottingham<BR>NG7 2RD </FONT> <DIV></DIV><BR><BR> <DIV><FONT size=2>Tel: +44 (0)115 84 67262<BR>Email: laxpcl@nottingham.ac.uk</FONT> <DIV></DIV></DIV></FONT></DIV></DIV></BODY><br/> <p> This message has been checked for viruses but the contents of an attachment may still contain software viruses, which could damage your computer system: you are advised to perform your own checks. Email communications with the University of Nottingham may be monitored as permitted by UK legislation. </p> </HTML>