Re: [EnergyPlus_Support] COMIS Question

["Joe Huang" <yjhuang@xxxxxxx>]

Greg,

If I understand you correctly, you want to run COMIS for just one zone of  a
building, and
then extract the space temperature for just that zone. You can do that in
EnergyPlus by
simply defining COMIS nodes for only that zone. However, keep in mind then
there would
then be no air flow either to the other zones through infiltration or from
zone to zone, which
was the primary reason for adding COMIS to EnergyPlus.

As to your second question, yes, you can have sweveral exterior node points
on the same
exposure or wall of a zone, like a bank of windows, etc. Ideally, you would
want to input
different pressure coefficients for each node point, because otherwise the
flow characteristics
for the multiple nodes would be identical.

Joe Huang
Lawrence Berkeley National Laboratory

----- Original Message -----
From: "Greg Doerge" <GregD@xxxxxxxxxxxxxxx>
To: <EnergyPlus_Support@xxxxxxxxxxxxxxx>
Sent: Friday, July 18, 2003 9:26 AM
Subject: [EnergyPlus_Support] COMIS Question


> I'm looking to model a typical apartment unit in a building to see if
there
> is a need for air conditioning during the summer months.  I basically want
> to run a simulation during the summer and output the space temperatures in
> my zones.  I would also want to run an identical simulation with the
windows
> of the apartment open, using the COMIS tool to see how those temperatures
> vary between simulations.
>
> I can build the physical entities of my model without any problem, the
> geometries and construction are all known.
>
> I have never really used the COMIS tool before, but have read through the
> section in the manual and still have some questions.  Can I used COMIS to
> measure the space temperatures in only one zone?  Also, can I have 2
> exterior node points on the same (side) exposure of a zone?
>
> Any help / insight you could offer would be greatly appreciated, or if
there
> is something I did not explain clearly, please let me know and I can
> clarify.  If someone knows a better way to model the situation I'm trying
to
> analyze, perhaps you could point me in the right direction.
>
> Thanks in advance.
>
>  Greg Doerge
> MW Consulting Engineers
> Voice: 206.515.4004
> Fax: 206.545.2026
>
>
>
>
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