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Re: [EnergyPlus_Support] VRF System - Outdoor Air Summary Zero





I looked at the output variables in the csv file. This means the simulation is actually accounting for outdoor air at the VRF terminal units.
The report in the html file looks incorrect.

On 2/2/2015 7:54 AM, Ivan Mezzacapa ivan_slip@xxxxxxxxxxx [EnergyPlus_Support] wrote:
If you check "DesignSpecification:OutdoorAir", the outdoor air flow is specified, but, when simulate, the output show zero outdoor air (in outdoor air summary) in all zones.

Técg. Ivan Mezzacapa

Projetista  de Ar Condicionado / Consultor em Eficiência Energética


Celular: (11)9963-9326




To: EnergyPlus_Support@xxxxxxxxxxxxxxx
From: EnergyPlus_Support@xxxxxxxxxxxxxxx
Date: Mon, 2 Feb 2015 07:48:10 -0500
Subject: Re: [EnergyPlus_Support] VRF System - Outdoor Air Summary Zero

 
In the E+ example file VariableRefrigerantFlow_5Zone.idf,
OUTSIDE AIR INLET NODE 1:System Node Standard Density Volume Flow Rate [m3/s](TimeStep) = 0.102293

  ZoneHVAC:TerminalUnit:VariableRefrigerantFlow,
    TU1,                     !- Zone Terminal Unit Name
    OutdoorAir:Mixer,        !- Outside Air Mixer Object Type
    TU1 OA Mixer,            !- Outside Air Mixer Object Name

  OutdoorAir:Mixer,
    TU1 OA Mixer,            !- Name
    TU1 VRF DX CCoil Inlet Node,  !- Mixed Air Node Name
    Outside Air Inlet Node 1,!- Outdoor Air Stream Node Name <<<<<<
    Relief Air Outlet Node 1,!- Relief Air Stream Node Name
    TU1 Inlet Node;          !- Return Air Stream Node Name

On 2/2/2015 6:08 AM, Ivan Mezzacapa ivan_slip@xxxxxxxxxxx [EnergyPlus_Support] wrote:
Hi everyone,

I have a problem a long time and I can not solve.

All VRF systems have the output with external air flow zero. I do not know what the problem is.

I used the example file VariableRefrigerantFlow_5Zone.idf, and even then the outside air is zero.

Does anyone know the source of the problem?

Thanks!

Técg. Ivan Mezzacapa

Projetista  de Ar Condicionado / Consultor em Eficiência Energética


Celular: (11)9963-9326


-- 
Richard Raustad
Florida Solar Energy Center
1679 Clearlake Road
Cocoa, FL 32922
Ph: (321)638-1454
http://www.fsec.ucf.edu/en/

Program Director
Electric Vehicle Transportation Center
http://evtc.fsec.ucf.edu/

-- 
Richard Raustad
Florida Solar Energy Center
1679 Clearlake Road
Cocoa, FL 32922
Ph: (321)638-1454
http://www.fsec.ucf.edu/en/

Program Director
Electric Vehicle Transportation Center
http://evtc.fsec.ucf.edu/


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Posted by: Richard Raustad <rraustad@xxxxxxxxxxxx>


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