[EnergyPlus_Support] Re: Can Unit Ventilator be modeled parallel to a furnace in an air loop?

["Ryan" <rdelbalso@xxxxxxxxx>]

Fred,
Thanks for the reply.  I think after mulling on it overnight, I 
figured out what I can do.  I am putting the unit ventilator and the 
direct air components in the zone equipment list and having an air 
loop for just the DX cooling system.  I am still trying to get all 
the nodes in order and hopefully it will work.  If I can't get it to 
work I will let you know.  I am very new to this program and am 
struggling with the system layouts, but I think I am getting the hang 
of it.  We will see.
Thanks
Ryan

--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, Fred Buhl <wfbuhl@...> 
wrote:
>
> It seems to me that what you are trying to do should be possible - 
multiple
> zone equipments are allowed. Let us take a look at your original 
> configuration
> and see if we can spot a problem.
> 
> Fred Buhl
> 
> Ryan wrote:
> > Hello,
> > I am trying to model an existing system that has a roof top dx 
coil 
> > air conditioner serving a zone for the cooling only and a hot 
water 
> > loop serving each zone with small fan coil units in each room.  
My 
> > original idea was to model the air conditioning system with a 
> > furnace:heatcool using a coil:DX:cooling, a coil:electric:heating 
set 
> > to have no capacity and a Fan:onoff in an air loop with a direct 
air 
> > component in the zone equipment side.  To model the heating 
system I 
> > was using a Unit Ventilator with no cooling coil, a 
> > coil:water:simpleheating, and a fan:constvolume.  The unit 
ventilator 
> > is also be zone equipment (which seems to be a problem).
> >
> > What i am having trouble with is this does not seem to be 
possible to 
> > have the two systems set up this way as i can only have one zone 
> > equipment.
> >
> > My question:  Is it possible to set the system up to have the 
unit 
> > ventilator and furnace:heatcool set up in a parallel air loop 
> > configuration and then the zone equipment is the direct air 
component 
> > only?
> >
> > Part of the reason i am doing it this way is I want to be able to 
set 
> > different fan efficiencies as well as to have the cooling coil 
> > available at different times than the heating system (ie partial 
> > overlap of availabilities).
> >
> > Question 2:  is there a better way to set this up?
> >
> > Thanks
> > Ryan
> >
> >
> >
> > ------------------------------------
> >
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> >
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> >
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> >
> >
> >
>



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