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<p class=MsoNormal><span lang=EN-US>How can I model a VAV-system for different
zones with TRNSYS (15/16/17)? Is there a tutorial or example? <o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>Is there a certain type, which works
together with the building model Type 56? <o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>At the moment I do a work-around, but I think
results won’t be as accurate as they should.<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>I divide the model in to real part and a fictive
part. The real model is supplied with the minimum outdoor air rate and a fixed
temperature. The heating or cooling load make the QHEAT and QCOOL (output of
Type 56). <o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>Then I calculate the necessary mass flow of
air which is needed to provide the load calculated as QHEAT and QCOOL. Then I
can calculate the real fan-power. I think the operative temperature is wrong
because in reality more air enters the room and I´m always one time-step
behind. If I have several zones needing different supply temperatures it
becomes complicated..<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>So I would really appreciate if somebody
could help me! Maybe it would also help me if you describe how other
simulation-programs handle it.<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>Thanks<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>Chrisb!<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
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