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Re: [EnergyPlus_Support] DOAS + VAV



You might be able to create the central system (AHU and VAVs) using the HVAC templates, and also define a DOAS using the templates. Then from there you can open the expanded idf, and create a duct and mixer to add the DOAS air to a point in the central air loop. You'll have to create and manage some new branches, nodes and create setpoint managers to know how much air should be supplied from the DOAS. I'm not sure if it is possible, but that's the first way I would approach it.

Maxim

From: "Carolina H. Galeazzi" <caro_poa@xxxxxxxxxxxx>
To: "EnergyPlus Support" <EnergyPlus_Support@xxxxxxxxxxxxxxx>
Sent: Wednesday, August 14, 2013 10:55:03 AM
Subject: [EnergyPlus_Support] DOAS + VAV

 

Hi All,
 
I'm modeling a building that has a Dedicated Outdoor Air system distributed to a central air system w/ VAV in each floor(where the mixed and conditioned 
air is distribuited by a single duct in each zone). So I need one air loop to supply air into another air loop.
The DOAS has a specific chiller with 6°C chilled water, while the chillers that suport the VAV have 7,5°C chilled water temperature, so I need two systems.

The Energyplus templates do not allow to construct DOAS with VAV.
 
Does anyone have an idea in how I could model this system?
 
 
Thank you,

Carolina




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