<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1"> <META content="MSHTML 6.00.5730.11" name=GENERATOR></HEAD> <BODY> <DIV><FONT size=2> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-GB style="FONT-FAMILY: Arial"><FONT size=3>Dear all,<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /><o:p></o:p></FONT></SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-GB style="FONT-FAMILY: Arial"><o:p><FONT size=3> </FONT></o:p></SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-GB style="FONT-FAMILY: Arial"><FONT size=3>some days ago I send my problem with the fan control around. Unfortunately nobody answered me.<o:p></o:p></FONT></SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-GB style="FONT-FAMILY: Arial"><o:p><FONT size=3> </FONT></o:p></SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-GB style="FONT-FAMILY: Arial"><FONT size=3>My model includes a "Raum" (like an office), an air flow net and a plant. The air flow net consists of a fan and some openings. The fan makes from 7:00 -18:00 an constant air change rate of 1.0 ach and otherwise 0.5 ach.<o:p></o:p></FONT></SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-GB style="FONT-FAMILY: Arial"><FONT size=3>The plant includes a cooling coil and some ducts only.<o:p></o:p></FONT></SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-GB style="FONT-FAMILY: Arial"><o:p><FONT size=3> </FONT></o:p></SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-GB style="FONT-FAMILY: Arial"><FONT size=3>Now I have done some further experiments. Please see the attachement.<o:p></o:p></FONT></SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-GB style="FONT-FAMILY: Arial"><o:p><FONT size=3> </FONT></o:p></SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-GB style="FONT-FAMILY: Arial"><FONT size=3>My problems are:<o:p></o:p></FONT></SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-GB style="FONT-FAMILY: Arial"><FONT size=3>When the cooling coil <SPAN class=008173515-13122006>(plant) </SPAN>works, the set-up of the fan in the flow net work gets in big trouble and the note-temperatures are different in the network and in the flow net work.<o:p></o:p></FONT></SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-GB style="FONT-FAMILY: Arial"><o:p><FONT size=3> </FONT></o:p></SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-GB style="FONT-FAMILY: Arial"><FONT size=3>Did anyone know this problem?<o:p></o:p></FONT></SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-GB style="FONT-FAMILY: Arial"><FONT size=3>Is a plant without fan possible?</FONT></SPAN></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-GB style="FONT-FAMILY: Arial"><SPAN class=008173515-13122006><FONT size=3>What can I do?</FONT></SPAN></SPAN></P></FONT></DIV> <DIV> </DIV> <DIV class=Section1> <P class=MsoNormal align=left><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><o:p><SPAN class=008173515-13122006>Regards</SPAN></o:p></SPAN></P> <P class=MsoNormal align=left><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><o:p><SPAN class=008173515-13122006>Monika</SPAN></o:p></SPAN></P></DIV></BODY></HTML>