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Re: [EnergyPlus_Support] Recurring Errors
The warning simply means the air leaving the DX cooling coil is near
freezing. If you do not care about frost formation on the coil,
disregard the warning.
If you are worried the results may not be representative of actual,
since there is no defrost mechanism for the DX cooling coils, then
investigate why the coil leaving air temperature is so cold. the
warnings gives some possible reasons why this might happen (e.g., 15C
inlet air temp).
On 8/2/2012 3:25 PM, Long Phan wrote:
> Hi, all
>
> After running a simulation, I got these errors. Can anyone explain to me? Many thanks
>
> Long
>
> ** Warning ** Coil:Cooling:DX:SingleSpeed "DATACENTER UNITARY COOLING COIL" - Full load outlet air dry-bulb temperature < 2C. This indicates the possibility of coil frost/freeze. Outlet temperature = 1.97 C.
> ** ~~~ ** ...Occurrence info = OS:RUNPERIOD 1, 04/06 06:30 - 06:45
> ** ~~~ ** ... 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 = 15.103 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.
>
>
>
> ------------------------------------
>
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--
Richard A. Raustad
Senior Research Engineer
Florida Solar Energy Center
University of Central Florida
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------------------------------------
Primary EnergyPlus support is found at:
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The primary EnergyPlus web site is found at:
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The group web site is:
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Attachments are currently allowed but be mindful that not everyone has a high speed connection. Limit attachments to small files.
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