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Re: [EnergyPlus_Support] Re: Two AHUs for a zone



I think you can keep the proposed airloop as in the design and model the imaginary cooling system (to satisfy Appendix-G) using a ZoneHVAC:PackagedTerminalHeatPump object. As this is a zone object you shouldn't have any problem with node connections. Hope this helps.

On Tue, Oct 23, 2012 at 10:56 AM, ntraughpee <matthew.sverre.anderson@xxxxxxxxx> wrote:
 

I would think you could juice the dual duct object to operate like this but it would probably take a considerable amount of effort.



--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, Jim Dirkes <jim@...> wrote:
>
> Dear Francesco,
>
> * I do not think it is possible to model two air loops serving a single zone
>
> * You can model one Air Loop plus one type of Zone equipment (e.g. PTAC)
>
> * I cannot think what requirement of Appendix G would require such a system

>
> James V Dirkes II, PE, BEMP, LEED AP
> www.buildingperformanceteam.com<http://www.buildingperformanceteam.com/>

> Energy Analysis, Commissioning & Training Services
> 1631 Acacia Drive, Grand Rapids, MI 49504 USA
> 616 450 8653
>
> From: EnergyPlus_Support@xxxxxxxxxxxxxxx [mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx] On Behalf Of FrancescoP
> Sent: Tuesday, October 23, 2012 10:46 AM
> To: EnergyPlus_Support@xxxxxxxxxxxxxxx
> Subject: [EnergyPlus_Support] Two AHUs for a zone
>
>
>
> I would like to model a zone as connected to two different AHUs, one AHU with heating coil and the other one with cooling coil (it isn't a real HVAC system; this model is for ANNEX G of ASHRAE 90.1-2007). Is it possible? How should I specify the ZoneHVAC:Equipmentconnections? Should I specify the two inlet nodes in the same nodelist? Should the "zone retuen air node name" be the same for the two systems?
> Do you know if there is an example file with such a situation, please?
> With Regards
>




--
Vinay Dev



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