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Re: [EnergyPlus_Support] Multiple nested system loops

You can do the following:

1) Model a central 100% outdoor air system to supply tempered 
ventilation air and meet resulting
zone and ventilation loads with fan coil units. However, you can not run 
the supply air (ventilation air)
through the fan coil units - the central system would have to be modeled 
with separate terminal units.

2) model the system + fan coils as a system with terminal units. The 
best choice of mimicing what
you want to do might be using 4 pipe terminal induction units 
(AirTerminal:SingleDuct:ConstantVolume:FourPipeInduction).

Fred Buhl

On 12/7/2009 8:10 PM, careym.cosmaj wrote:
> Curly question.
>
> Modelling multiple floors of fan coil units (attempting to get loads for a VRV model), with fan coils on the floor plate and a primary AHU on roof providing tempering of outdoor air.
>
> Can Eplus model multiple nested system loops, e.g
>
> Level 1: Zone loop (zonal loads)
> Level 2: Fan coil loop (local heat cool and OA to zone)
> Level 3: Ahu loop (supplying OA to mixing box of fan coil units)
>
> Something like HeatPumpVRP_DCV.idf where the supply splitter (HeatPumpSupplyPath) is conneected to the outdoor air inlet node of a mixing box on the fan coil unit.
>
> Any clever suggestions or can I only simulate the fan coils or the central air system but not both?
>
> Regards,
>
> Mark Carey 
>
>
>
>
>
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