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dear Peng,
I hope you can find mor detaild answar;
I've been using comis in 2003-2004, to simulate a natural ventilated building
with atrium to estract the air.
At that time (if I remember well) it wosn't possible to simulate a large opening in
an horizontal plane; so I used a duct with the same section of the atrium.
good luck.
Marco Massetti
Peng Xu <p.xu4@...> ha scritto:
Peng Xu <p.xu4@...> ha scritto:
Dear "COMIS" users:
I am now trying to simulate the air-flow in an office building with an
big atrium in the middle, with TRNSYS and COMIS. Because of the high
height and the temperature difference within the atrium, I divided the
atrium vertically into 3 zones, linking them with big openings as if they
are fully linked and my concentrations for temperature will be on the
lowest level only.
But I got some strange answers from COMIS when I use the "large opening"
air flow model between the zones of atrium. In my model, the offices
around the atrium will be mechanically ventilated and the atrium will be
ventilated through adjacent air flows from the surrounding offices and
the air can be exhausted at the top of the atrium. I am not sure how to
make such model with both mechanical ventilation and buoyancy dominated
natural ventilation.
My concept for this study is hybrid ventilation. The external vents for
offices would be on when conditions for natural ventilation are met. I
am quite appreciated if I can get help you and a sample COMIS .cpf file
for the atrium or solar chimney will be highly useful for me to
understand.
Thanks very much in advance!
Best Regards,
Vince XU
the University of Melbourne,
Melbourne, Australia
__________________________________________________
marco massetti
a r c h
i t e t t o
0034 691 03 04 41 (es)
0039(0) 333 7950 485 (it)
0039(0) 11 59 17 90 (it)
0039(0) 11 59 17 90 (it)
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