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Re: [EnergyPlus_Support] Re: enquires (URGANT)
You can only use 1 air loop per zone since you can have only 1 return
node. You should use the air primary loop to condition the outdoor and
and provide it to the zone. Then use a piece of zone equipment to
condition the remaining load in the zone see the WindACAuto example file).
lee_ching_hei wrote:
>
> I think one mixing box can only be connected in one system. Maybe u
> can establish 2 different single systems by adjusting the air flow
> rate - one for all outside air (100%)and one for the room air (with
> 0% of outside air).
>
> --- In EnergyPlus_Support@xxxxxxxxxxxxxxx
> <mailto:EnergyPlus_Support%40yahoogroups.com>, Sze Hung Lee
> <be074240@...> wrote:
> >
> > Dear Sir/Madam,
> >
> > ? There are two systems connected together to supply the air to the
> same zone, namely the CAV air condtioning system with fully outdoor
> air?and the CAV air conditoing system with?room air?return. How?is
> the system? constructed in the EnergyPlus file? ?
> >
> > For the detail,
> > I established two branches for the?cooling process.?The outdoor?air
> is?treated by??"CAV air condtioning system with fully outdoor air"?
> and the?returen air is treated by "CAV air conditoing system with?
> room air?return".?The?treated air after?these two?loop is then mixed
> by a?mixer box?in "plant-condenser flow control" and a duct is
> created as a branch loop for mixing. The same method has been done on
> outlet loop of zone oulet but use the spliter as for spliting the
> return air back into return air node.
> >
> > ? However, the serve statement as below was shown. Is it possible
> that a zone outlet connect to two return air branch inlet? Please
> help to solve the problem. I am urgant to establish this system. Look
> forward to your reply and please reply as soon as possible.
> >
> > Many thanks in advance.
> >
> >
> >
> > ?? ** Severe? ** Duplicate Node Name used for ZoneEquipGroup Outlet
> Node=RETURN AIR MIXER OUTLET
> > ?? **?? ~~~?? ** ...detected in Air Loop=VAV SYS 3
> > ?? **?? ~~~?? ** ...first used in Air Loop=VAV SYS 1 for
> ZoneEquipGroup Outlet Node
> > ?? ** Severe? ** Duplicate Node Name/List used for SupplyAirPath
> ZoneEquipGroup Inlet Nodes=ZONE EQ IN NODE 1
> > ?? **?? ~~~?? ** ...detected in Air Loop=VAV SYS 3
> > ?? **?? ~~~?? ** ...first used in Air Loop=VAV SYS 1 for
> SupplyAirPath ZoneEquipGroup Inlet Nodes
> >
> >
> > ?ºä?ä¸?æ–·??å?Yahoo! Mail，é??Žé?港è??€ä½ å??‡æ?見調?¥ã€
> ‚è???å?http://surveylink.yahoo.com/wix/p5429076.aspx
> <http://surveylink.yahoo.com/wix/p5429076.aspx> ?¼è¡¨ä½ ç???è?!
> >
>
>
--
Richard A. Raustad
Senior Research Engineer
Florida Solar Energy Center
University of Central Florida
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