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<DIV><FONT face=Arial size=2><SPAN class=098245804-25012006>Hi
everyone,</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=098245804-25012006></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=098245804-25012006>I am experiencing a
problem using type 74, the CPC collector. I have it connected to the type 109
(TMY2) weather reader with the following inputs:</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=098245804-25012006></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=098245804-25012006>-ambient
temperature,</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN class=098245804-25012006>-incident
radiation,</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN class=098245804-25012006>-<SPAN
class=098245804-25012006>incidence angle,</SPAN></SPAN></FONT></DIV>
<DIV><SPAN class=098245804-25012006><FONT face=Arial size=2>-zenith
angle,</FONT></SPAN></DIV>
<DIV><SPAN class=098245804-25012006><FONT face=Arial size=2>-solar azimuth
angle,</FONT></SPAN></DIV>
<DIV><SPAN class=098245804-25012006><FONT face=Arial size=2>-collector
slope</FONT></SPAN></DIV>
<DIV><SPAN class=098245804-25012006><FONT face=Arial
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=098245804-25012006><FONT face=Arial size=2>I am using axis
orientation mode 2. I also use a constant input fluid temperature and mass flow.
</FONT></SPAN></DIV>
<DIV><SPAN class=098245804-25012006><FONT face=Arial
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=098245804-25012006><FONT face=Arial size=2>The problem I am
experiencing is a fluid outlet temperature that is slightly lower than the input
temperature (i.e. affected only by the thermal loss due to the temperature
difference to ambient). There is no heat transfer to the absorber tube although
there is radiation going into it.</FONT></SPAN></DIV>
<DIV><SPAN class=098245804-25012006><FONT face=Arial
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=098245804-25012006><FONT face=Arial size=2>If I use the same
weather data and input setup on any other collector model it works
fine.</FONT></SPAN></DIV>
<DIV><SPAN class=098245804-25012006><FONT face=Arial
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=098245804-25012006><FONT face=Arial size=2>Has anyone
experienced this before and maybe a solution to this?</FONT></SPAN></DIV>
<DIV><SPAN class=098245804-25012006><FONT face=Arial
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=098245804-25012006><FONT face=Arial
size=2>Thanks!</FONT></SPAN></DIV>
<DIV><SPAN class=098245804-25012006><FONT face=Arial
size=2>Paul</FONT></SPAN></DIV>
<DIV><SPAN class=098245804-25012006><FONT face=Arial
size=2></FONT></SPAN> </DIV>
<DIV align=left><FONT face=Arial size=2><STRONG>Paul
Kohlenbach</STRONG></FONT></DIV>
<DIV align=left><FONT size=2><FONT face=Arial></FONT></FONT></DIV>
<DIV align=left><FONT face=Arial size=2><SPAN
class=492194300-14112005>Postdoctoral </SPAN>Research Fellow</FONT></DIV>
<DIV align=left><FONT face=Arial size=2>Distributed Generation</FONT></DIV>
<DIV align=left>
<DIV align=left><FONT face=Arial size=2>CSIRO Energy Technology</FONT></DIV>
<DIV align=left><FONT face=Arial size=2>10 Murray Dwyer Circuit</FONT></DIV>
<DIV align=left><FONT face=Arial size=2>Steel River Estate</FONT></DIV>
<DIV align=left><FONT size=2><FONT face=Arial>Mayfield West, 2304 <SPAN
class=241132822-24062004>NSW, Australia</SPAN></FONT></FONT></DIV></DIV>
<DIV align=left><FONT face=Arial size=2>Tel: (02) 4960 6107</FONT></DIV>
<DIV align=left><FONT face=Arial size=2>Fax: (02) 4960 6111</FONT></DIV>
<DIV align=left><FONT face=Arial size=2>Email: <A
href="mailto:paul.kohlenbach@CSIRO.au">paul.kohlenbach@CSIRO.au</A></FONT></DIV>
<DIV align=left><B><FONT face="Arial Narrow" color=#000080
size=2></FONT></B> </DIV>
<DIV align=left><B><FONT face="Arial Narrow" color=#000080 size=2>PLEASE
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