Murcielago's profile - activity

CentralDOAS Splitter Outlet Nodes Issue Hi and thanks in advance for your help. I'm using EnergyPlus' example file (Sma

CentralDOAS Splitter Outlet Nodes Issue Hi and thanks in advance for your help. I'm using EnergyPlus' example file (Sma

CentralDOAS OA Inlet Nodes Hi and thanks in advance for your help. I'm using EnergyPlus' example file (SmallOffice_Cent

CentralDOAS OA Inlet Nodes Hi and thanks in advance for your help. I'm using EnergyPlus' example file (SmallOffice_Cent

CentralDOAS OA Inlet Nodes Hi and thanks in advance for your help. I'm using EnergyPlus' example file (SmallOffice_Cent

CentralDOAS OA Inlet Nodes Hi and thanks in advance for your help. I'm using EnergyPlus' example file (SmallOffice_Cent

CentralDOAS OA Inlet Nodes Hi and thanks in advance for your help. I'm using EnergyPlus' example file (SmallOffice_Cent

CentralDOAS OA Inlet Nodes Hi and thanks in advance for your help. I'm using EnergyPlus' example file (SmallOffice_Cent

CentralDOAS OA Inlet Nodes Hi and thanks in advance for your help. I'm using EnergyPlus' example file (SmallOffice_Cent

Thanks for the proactive thought, I did actually go through this issue, it wouldn't let me auto-size the 2nd DOAS no mat

I'm having an issue with EnergyPlus 9.6. I added 2 DOAS units to my model, but my model fails to complete the sizing of the cooling coil of the second DOAS unit. The sequence of my setup for the DOAS is (OA - heating coil - cooling coil - fan).

For some reason the [Coil inlet air temperature used for sizing = -997.59 [C]], and I tried everything I can to fix it.

I tried to change (Design Inlet/Outlet Air Temperature) from (autosize) to fixed temperatures, but for some reason I still see the same error.

Here is the full list of errors I'm seeing:

   ** Warning ** SizeWaterCoil: Potential issue with equipment sizing for Coil:Cooling:Water B1 DOAS CC
   **   ~~~   ** ...Rated Total Cooling Capacity = -112120230.17 [W]
   **   ~~~   ** ...Air flow rate used for sizing = 90.45075 [m3/s]
   **   ~~~   ** ...Outdoor air fraction used for sizing = 0.00
   **   ~~~   ** ...Coil inlet air temperature used for sizing = -997.59 [C]
   **   ~~~   ** ...Coil outlet air temperature used for sizing = 17.50 [C]
   ** Severe  ** SizeWaterCoil Coil:Cooling:Water B1 DOAS CC, Developer Error: Component sizing incomplete.
   **   ~~~   ** SizingString = Design Inlet Air Humidity Ratio [kgWater/kgDryAir], SizingResult = -99998.9
   ** Severe  ** Developer Error: sizing of Design Inlet Air Humidity Ratio [kgWater/kgDryAir] failed.
   **   ~~~   ** Occurs in Coil:Cooling:Water B1 DOAS CC
   ** Warning ** SizeWaterCoil: Coil="B1 DOAS CC", Cooling Coil has leaving humidity ratio > entering humidity ratio.
   **   ~~~   **     Wair,in =  -999.000000 [kgWater/kgDryAir]
   **   ~~~   **     Wair,out = 1.200000E-002 [kgWater/kgDryAir]
   **   ~~~   ** ....coil leaving humidity ratio will be reset to:
   **   ~~~   **     Wair,out = -999.000000 [kgWater/kgDryAir]
   ** Severe  ** SizeWaterCoil Coil:Cooling:Water B1 DOAS CC, Developer Error: Component sizing incomplete.
   **   ~~~   ** SizingString = Design Outlet Air Humidity Ratio [kgWater/kgDryAir], SizingResult = -99998.9
   ** Severe  ** Developer Error: sizing of Design Outlet Air Humidity Ratio [kgWater/kgDryAir] failed.
   **   ~~~   ** Occurs in Coil:Cooling:Water B1 DOAS CC
   ** Warning ** SizeWaterCoil: Potential issue with equipment sizing for Coil:Cooling:Water B1 DOAS CC
   **   ~~~   ** ...Rated Total Cooling Capacity = -112120230.17 [W]
   **   ~~~   ** ...Air flow rate used for sizing = 90.45075 [m3/s]
   **   ~~~   ** ...Outdoor air fraction used for sizing = 0.00
   **   ~~~   ** ...Coil inlet air temperature used for sizing = -997.59 [C]
   **   ~~~   ** ...Coil outlet air temperature used for sizing = 17.50 [C]
   ** Severe  ** SizeWaterCoil Coil:Cooling:Water B1 DOAS CC, Developer Error: Component sizing incomplete.
   **   ~~~   ** SizingString = Design Coil Load [W], SizingResult = -99998.9
   ** Severe  ** Developer Error: sizing of Design Coil Load [W] failed.
   **   ~~~   ** Occurs in Coil:Cooling:Water B1 DOAS CC
   **  Fatal  ** Preceding water coil sizing errors cause program termination

Update: To clarify, this is my second DOAS unit in this model, which is identical to my first DOAS unit, but I'm only getting this error after adding the second one.

EnergyPlus DOAS Water Cooling Coil Sizing Error I'm having an issue with EnergyPlus 9.6. I added 2 DOAS units to my mode

EnergyPlus DOAS Water Cooling Coil Sizing Error I'm having an issue with EnergyPlus 9.6. I added a DOAS to my model, but

@rraustad Thank you so much! Your initial answer is spot on, as this is the exact case of my model; I have 2 identical

EnergyPlus DOAS Water Cooling Coil Sizing Error I'm having an issue with EnergyPlus 9.6. I added a DOAS to my model, but

EnergyPlus DOAS Water Cooling Coil Sizing Error I'm having an issue with EnergyPlus 9.6. I added a DOAS to my model, but

EnergyPlus DOAS Water Cooling Coil Sizing Error I'm having an issue with EnergyPlus 9.6. I added a DOAS to my model, but

EnergyPlus DOAS Water Cooling Coil Sizing Error I'm having an issue with EnergyPlus 9.6. I added a DOAS to my model, but

EnergyPlus DOAS Water Cooling Coil Sizing Error I'm having an issue with EnergyPlus 9.6. I added a DOAS to my model, but

Ya, I tried to look for something relevant but couldn't. My apologies. Thanks for your help!

Yes directly in IDF.

EnergyPlus Schedule:Compact Seasons I'm trying to create equipment (AHUs) operating schedules for the summer season whic