[EnergyPlus_Support] Error: Full Load Outlet Air Dry-Bulb Temperature < 2C

[Ivan Mezzacapa <ivan_slip@xxxxxxxxxxx>]

Hi!

I've two models with same hvac system. 

The only difference between the two models are the lighting and envelope.

One of my models is presenting this error, does anyone know what could be the cause? I believe that the error is not in the system because they are the same in both models.

** Warning ** Coil:Cooling:DX:SingleSpeed "SPLIT_230 COOLING COIL" - Full load outlet air dry-bulb temperature < 2C. This indicates the possibility of coil frost/freeze. Outlet temperature = 1.86 C.

   **   ~~~   **  ...Occurrence info = UNILEVERAGUAI, 06/20 17:45 - 17:52

   **   ~~~   ** ... Possible reasons for low outlet air dry-bulb temperatures are: This DX coil

   **   ~~~   **    1) may have a low inlet air dry-bulb temperature. Inlet air temperature = 19.971 C.

   **   ~~~   **    2) may have a low air flow rate per watt of cooling capacity. Check inputs.

   **   ~~~   **    3) is used as part of a HX assisted cooling coil which uses a high sensible effectiveness. Check inputs.

   ** Warning ** Coil:Cooling:DX:SingleSpeed "SPLIT_270280 COOLING COIL" - Full load outlet air dry-bulb temperature < 2C. This indicates the possibility of coil frost/freeze. Outlet temperature = 1.86 C.

   **   ~~~   **  ...Occurrence info = UNILEVERAGUAI, 06/20 17:45 - 17:52

   **   ~~~   ** ... Possible reasons for low outlet air dry-bulb temperatures are: This DX coil

   **   ~~~   **    1) may have a low inlet air dry-bulb temperature. Inlet air temperature = 19.971 C.

   **   ~~~   **    2) may have a low air flow rate per watt of cooling capacity. Check inputs.

   **   ~~~   **    3) is used as part of a HX assisted cooling coil which uses a high sensible effectiveness. Check inputs.

   ** Warning ** Coil:Cooling:DX:SingleSpeed "SPLIT_299 COOLING COIL" - Full load outlet air dry-bulb temperature < 2C. This indicates the possibility of coil frost/freeze. Outlet temperature = 1.86 C.

   **   ~~~   **  ...Occurrence info = UNILEVERAGUAI, 06/20 17:45 - 17:52

   **   ~~~   ** ... Possible reasons for low outlet air dry-bulb temperatures are: This DX coil

   **   ~~~   **    1) may have a low inlet air dry-bulb temperature. Inlet air temperature = 19.971 C.

   **   ~~~   **    2) may have a low air flow rate per watt of cooling capacity. Check inputs.

   **   ~~~   **    3) is used as part of a HX assisted cooling coil which uses a high sensible effectiveness. Check inputs.

Thanks for all!

Técg. Ivan Mezzacapa

Projetista  de Ar Condicionado / Consultor em Eficiência Energética

LinkedIN: http://www.linkedin.com/in/ivanmezzacapa

Facebook: http://www.facebook.com/ivan.mezzacapa

Celular: (11)9963-9326

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