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Re: [EnergyPlus_Support] Zone return air path
Theoretically, you should be able to do this. A zone may be served
by multiple pieces of equipment, but only one may be an air loop
drawing from the zone return air node. The air loop can be your
outside air system. The other equipment must be zone equipment which
draws from a zone exhaust node, such as a fan coil. It should work,
but I cannot say that I have ever tried it. Since the heat pump must
go on an air loop, you would not be able to use it in combination
with another air loop.
Mike
On 18 Jun 2003, at 21:32, Chris Jones wrote:
> The return air problem is an interesting one. Say for example, you
> have compartment fans on each floor and a single OA fan serving all
> floors. A portion of the return air on each floor goes to the
> compartment fan (or fan coils, heat pumps, etc) and a portion goes to
> relief - which may be through a heat recovery system connecting fresh
> air and relief air. How would you model that in EnergyPlus? My
> guess is that you can't.
>
>
>
> >Hi Chunming:
> >
> >I am trying to find out if this limit can be increased. If not, you
> >are limited to 10 plenums per air primary loop. You cannot use more
> >than one return air path in an air loop, so you would need to use 2
> >air primary loops in your building. We do not have any examples of
> >this. You need to repeat the air primary loop and all of its
> >subcomponents (branch list, main branch, coils, fan, supply air path,
> >return air path, controllers, etc.). Your chilled water/hot water
> >supply loops can serve both air loops.
> >
> >Mike
> >
> >On 22 Apr 2003, at 23:14, HSIEH Chun-Ming wrote:
> >
> > > Hello,
> > >
> > > I am chunming. I have a question about zone return air path.
> > > In each of the "ZONE RETURN AIR PATH", there is a limitation that
> > > at most 10 component can be input. But now, I am simulating a
> > > building with 15F, each story with a plenum on it. That means 15
> > > plenums here. Do I need to create the other new zone return air
> > > path or even a air primary loop in this case? Is there any example
> > > with mutiple air paths or air primary loop in E+? Thank you very
> > > much.
> > >
> > > Chunming
> > >
> > >
> > >
> > >
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>
> Chris Jones, P. Eng.
> 14 Oneida Avenue
> Toronto, ON M5J 2E3
> Tel. 416 203-7465
> Fax. 416 203-8249
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