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<p class=MsoNormal style='margin-bottom:12.0pt;line-height:normal'><font
size=2 face=Verdana><span style='font-size:10.0pt'>Hello ESP-r community <br>
<br>
I am modelling two fluid coupled counter-flow heat exchangers in order to
recover heat in a passive ventilation system. I have tried to couple a heating
coil in the inlet with a cooling coil in the outlet (type 20 and 21), and let a
fixed flow rates controller control the capacity flow. Contrary to my beliefs
the coils are not counter-flow (the outlet water temp equals the outlet air
temp). <br>
In my search I have looked into contructing a counter-flow heat exchanger from
primitive parts (heat transfer tubes) as a meta component as the intended
exchanger does in fact consists of plastic tubes. However, while I am able to
specify the inter-connections I am not able to specify inlet and outlet index
as otherwise stated in the Aasem thesis. Program never asks. <br>
<br>
Question 1: Are there any pre-specified counter-flow heat exchangers available
in version 11.4? <br>
Question 2: Anybody have any experience with meta components. Have I discovered
a bug? Any work-around? <br>
<br>
Thank you very much for your help. <br>
<br>
<br>
<o:p></o:p></span></font></p>

<p class=MsoNormal style='line-height:normal'><font size=2 face=Verdana><span
style='font-size:10.0pt'>Best regards <br>
Christian Hviid</span></font><o:p></o:p></p>

<p class=MsoNormal style='line-height:normal'><o:p>&nbsp;</o:p></p>

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