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Re: [EnergyPlus_Support] Doubt About VRF System Warning (Severe)



Are you autosizing?

Mit freundlichen GrüÃ?en- Sent from my iPhone (excuse the brevity)

i. A.
Jean Marais
b.i.g. bechtold
Tel.   +49 30 6706662-23

On 06.11.2014, at 23:30, "Ivan Mezzacapa ivan_slip@xxxxxxxxxxx [EnergyPlus_Support]" <EnergyPlus_Support@xxxxxxxxxxxxxxx> wrote:

 

Hello everyone!

I am having a problem simulating a VRF system. I created the entire system and the simulation shows me an error that makes no sense for me.

Is reporting that i was inserted data that do not conform to the model input. It's the first time I see this error.

 ** Warning ** SizeDXCoil: Coil:Cooling:DX:VariableRefrigerantFlow 06SUBSOLO:NOBREAK VRF COOLING COIL
   **   ~~~   ** ...Rated Total Cooling Capacity will be limited by the maximum rated volume flow per rated total capacity ratio.
   **   ~~~   ** ...DX coil volume flow rate (m3/s) = 3.000000
   **   ~~~   ** ...Requested capacity (W) = 36641.887
   **   ~~~   ** ...Requested flow/capacity ratio (m3/s/W) = 8.187E-005
   **   ~~~   ** ...Maximum flow/capacity ratio (m3/s/W) = 6.041E-005
   **   ~~~   ** ...Adjusted capacity (W) = 49660.652
  
 ************* SizeDxCoil: Potential issue with equipment sizing for Coil:Cooling:DX:VariableRefrigerantFlow 06SUBSOLO:NOBREAK VRF COOLING COIL
   **   ~~~   ** User-Specified Total Cooling Capacity of 55950.76 [W]
   **   ~~~   ** differs from Design Size Total Cooling Capacity of 49660.65 [W]
   **   ~~~   ** This may, or may not, indicate mismatched component sizes.
   **   ~~~   ** Verify that the value entered is intended and is consistent with other components.
 
  ************* SizeVRF: Potential issue with equipment sizing for AirConditioner:VariableRefrigerantFlow 03SUBSOLO:SUPERVISAOPREDIAL VRF TERMINAL UNIT
   **   ~~~   ** User-Specified Rated Total Heating Capacity of 63000.00 [W]
   **   ~~~   ** differs from Design Size Rated Total Heating Capacity of 55950.76 [W]
   **   ~~~   ** This may, or may not, indicate mismatched component sizes.
   **   ~~~   ** Verify that the value entered is intended and is consistent with other components.
  
 ** Warning ** SizeDXCoil: Coil:Cooling:DX:VariableRefrigerantFlow 06SUBSOLO:DADOSEVOZ VRF COOLING COIL
   **   ~~~   ** ...Rated Total Cooling Capacity will be limited by the minimum rated volume flow per rated total capacity ratio.
   **   ~~~   ** ...DX coil volume flow rate (m3/s) = 0.000000
   **   ~~~   ** ...Requested capacity (W) = 0.000
   **   ~~~   ** ...Requested flow/capacity ratio (m3/s/W) = 0.000
   **   ~~~   ** ...Minimum flow/capacity ratio (m3/s/W) = 4.027E-005
   **   ~~~   ** ...Adjusted capacity (W) = 0.000
   ** Severe  ** Sizing: Coil:Cooling:DX:VariableRefrigerantFlow 06SUBSOLO:DADOSEVOZ VRF COOLING COIL has zero rated air flow rate

If anyone can help, I'd be grateful. Follow the idf.

Best regards,

Técg. Ivan Mezzacapa

Projetista  de Ar Condicionado / Consultor em Eficiência Energética


Celular: (11)9963-9326

<Model.idf>


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