The HVACTemplate is not copying the inputs for the VRF coil correctly.
In your input file you have specified 3 m3/s cooling and heating flow rate and 55950.76 W capacity for the coils.
HVACTemplate:Zone:VRF,
06SUBSOLO:NOBREAK, !- Zone Name
3, !- Supply Air Flow Rate During Cooling Operation {m3/s}
3, !- Supply Air Flow Rate During Heating Operation {m3/s}
55950.76, !- Cooling Coil Gross Rated Total Capacity {W}
Open the Model.expidf file and find this coil, you will see this:
ZoneHVAC:TerminalUnit:VariableRefrigerantFlow,
06SUBSOLO:NOBREAK VRF Terminal Unit, !- Zone Terminal Unit Name
autosize, !- Supply Air Flow Rate During Cooling Operation {m3/s}
autosize, !- Supply Air Flow Rate During Heating Operation {m3/s}
Fan:OnOff,
06SUBSOLO:NOBREAK VRF Supply Fan, !- Name
autosize, !- Maximum Flow Rate {m3/s}
Coil:Cooling:DX:VariableRefrigerantFlow,
06SUBSOLO:NOBREAK VRF Cooling Coil, !- Name
Sch_HVAC, !- Availability Schedule Name
55950.76, !- Gross Rated Total Cooling Capacity {W}
autosize, !- Gross Rated Sensible Heat Ratio
autosize, !- Rated Air Flow Rate {m3/s}
Coil:Heating:DX:VariableRefrigerantFlow,
06SUBSOLO:NOBREAK VRF Heating Coil, !- Name
Sch_HVAC, !- Availability Schedule Name
55950.76, !- Gross Rated Heating Capacity {W}
autosize, !- Rated Air Flow Rate {m3/s}
Correct the inputs that show "autosize" to the values you entered in your input file. Then save that file as Model2.idf and run it.
For example, make these changes:
ZoneHVAC:TerminalUnit:VariableRefrigerantFlow,
06SUBSOLO:NOBREAK VRF Terminal Unit, !- Zone Terminal Unit Name
3, !- Supply Air Flow Rate During Cooling Operation {m3/s}
3, !- Supply Air Flow Rate During Heating Operation {m3/s}
Coil:Cooling:DX:VariableRefrigerantFlow,
06SUBSOLO:NOBREAK VRF Cooling Coil, !- Name
3, !- Rated Air Flow Rate {m3/s}
Coil:Heating:DX:VariableRefrigerantFlow,
06SUBSOLO:NOBREAK VRF Heating Coil, !- Name
3, !- Rated Air Flow Rate {m3/s}
Do the same to correct other issues in the expanded file.
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
LinkedIN: http://www.linkedin.com/in/ivanmezzacapaCelular: (11)9963-9326
-- Richard Raustad Senior Research Engineer Florida Solar Energy Center 1679 Clearlake Road Cocoa, FL 32922 Ph: (321)638-1454 http://www.fsec.ucf.edu/en/ Electric Vehicle Transportation Center http://evtc.fsec.ucf.edu/
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