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Re: [EnergyPlus_Support] Air flow from one zone to another: extraction to return air duct
Have you tried connecting the outlet of the Fan:ZoneExhaust in zone 3 to
the heat exchanger ?
joskenzy wrote:
>
> Could anyone help me implement the following ventilation concept:
>
> Say the building has 3 zones: treated air (SingleDuct:VAV:Reheat) is
> injected in the first zone. The same air flow rate passes from the
> first, through the second and into the third zone.
>
> There is no treated air injected in the second or the third zone.
>
> An air flow rate equal to the injection rate in zone 1 is extracted
> from zone 3.
>
> Normally, one would suggest to supply air to zone 1 and to use a
> Fan:ZoneExhaust to balance air flows. Using ZoneMixing, you can
> simulate air flowing from zone 1 to zone 2, and air flowing from zone
> 2 to zone 3.
>
> However (now comes the hard part): the building has other VAV-balanced
> zones, and I want to add the extracted air from zone 3 to the return
> duct of the other zones because the return air is used in a heat-
> exchanger.
>
> So for zone 3, I have an air flow entering the zone because of the
> ZoneMixing (zone 2 as source zone), but how can I add the replaced
> zone air to the air in the return duct?
>
> I looked at the manual and at previous topics here, but I only found
> that ZoneMixing adds air to a zone, while supposing an equal flow rate
> has left the zone (without knowing where the air went)..
>
> I would really appreciate your help!
>
>
--
Richard A. Raustad
Senior Research Engineer
Florida Solar Energy Center
University of Central Florida
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