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<div class=Section1><pre><font size=2 face="Courier New"><span lang=EN-GB
style='font-size:10.0pt'>Dear users,</span></font></pre><pre><font size=2
face="Courier New"><span lang=EN-GB style='font-size:10.0pt'>I’m modelling a collector loop that consists of a pump (variable speed), collector(type 1a), heat exchangers…</span></font></pre><pre><font
size=2 face="Courier New"><span lang=EN-GB style='font-size:10.0pt'>I’ve noticed that increasing the mass flow rate entering in the solar collector, the output temperature increase too… and at the contrary reducing the flow rate it decrease.</span></font></pre><pre><font
size=2 face="Courier New"><span lang=EN-GB style='font-size:10.0pt'>Probably I’m mistaking or not considering something… but I don’t understand what</span></font></pre><pre><font
size=2 face="Courier New"><span lang=EN-GB style='font-size:10.0pt'> </span></font></pre><pre><font
size=2 face="Courier New"><span lang=EN-GB style='font-size:10.0pt'>Best regards</span></font></pre><pre><font
size=2 face="Courier New"><span lang=EN-GB style='font-size:10.0pt'> </span></font></pre><pre><font
size=2 face="Courier New"><span lang=EN-GB style='font-size:10.0pt'>Marco Zeppetella</span></font></pre><pre><font
size=2 face="Courier New"><span lang=EN-GB style='font-size:10.0pt'> </span></font></pre>
<p class=MsoNormal><strong><b><font size=2 face=Arial><span style='font-size:
10.0pt;font-family:Arial'>------------------------------------------------------------------------------------</span></font></b></strong></p>
<p class=MsoNormal><strong><b><font size=2 face=Arial><span style='font-size:
10.0pt;font-family:Arial'>Marco Zeppetella</span></font></b></strong><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'><br>
Departamento de Investigación, Desarrollo e Innovación<font color="#0033cc"><span
style='color:#0033CC'>__</span></font>I+D+I</span></font><br>
<font color="#0033cc"><span style='color:#0033CC'>_____________________________________________</span></font><br>
<strong><b><font size=2 face=Arial><span style='font-size:10.0pt;font-family:
Arial'>Acciona Infraestructuras</span></font></b></strong><font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial'><br>
Polígono Industrial de Alcobendas</span></font></p>
<p class=section1 style='margin:0cm;margin-bottom:.0001pt'><font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial'>C/Valportillo II, 8</span></font></p>
<p class=section1 style='margin:0cm;margin-bottom:.0001pt'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'>28108 Alcobendas (MADRID)</span></font></p>
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12.0pt'> </span></font></p>
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