Re: [EnergyPlus_Support] Cooling Coil Error

[Fred Buhl <wfbuhl@xxxxxxx>]

This is coming from the coil autosizing calculation. The coil entering 
conditions
are the mixed air conditions: recirc air (if any) mixed with outside 
air. The outlet conditions
are what you told the program in your System Siszing input as your 
desired design cooling
supply air condiitons. So the message is saying that the entering 
moisture content is less
than the leaving moisture content. Since a coil can't add moisture, the 
choice is made to
try to remove 1/2 of the entering moisture.

Fred Buhl

asheaffe wrote:
> I am getting the following error on a coil:water:cooling
>
>
>
>    ** Warning ** SizeWaterCoil: Coil="EXTERIOR ZONES COOLING COIL", 
> Cooling Coil has leaving humidity ratio > entering humidity ratio.
>    **   ~~~   ** ..will be sized for 50% of entering humidity ratio.
>    ** Warning ** SizeWaterCoil: Coil="EXTERIOR ZONES COOLING COIL", 
> Cooling Coil has part wet, part dry conditions.
>    **   ~~~   ** ..will be sized for 50% of design entering humidity 
> ratio.
>    ** Warning ** SizeWaterCoil: Coil="OPERATING ZONE COOLING COIL", 
> Cooling Coil has leaving humidity ratio > entering humidity ratio.
>    **   ~~~   ** ..will be sized for 50% of entering humidity ratio.
>    ** Warning ** SizeWaterCoil: Coil="OPERATING ZONE COOLING COIL", 
> Cooling Coil has part wet, part dry conditions.
>    **   ~~~   ** ..will be sized for 50% of design entering humidity 
> ratio.
>
>
>
> What does this error mean?  In terms of the leaving humidity ratio, 
> are we talking about the system design humidity ratio?  This error 
> is totally detroying the performance of the cooling coil.
>
> Thanks,
>
> Andrew
>
>
>
> The primary EnergyPlus web site is found at:
> http://www.energyplus.gov
>
> The group web site is:
> http://groups.yahoo.com/group/EnergyPlus_Support/
>
> Attachments are not allowed -- please post any files to the appropriate folder in the Files area of the Support Web Site.
>
> EnergyPlus Documentation is searchable.  Open EPlusMainMenu.idf and press the "search" button.
>  
> Yahoo! Groups Links
>
>
>
>   


The primary EnergyPlus web site is found at:
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The group web site is:
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Attachments are not allowed -- please post any files to the appropriate folder in the Files area of the Support Web Site.

EnergyPlus Documentation is searchable.  Open EPlusMainMenu.idf and press the "search" button.
 
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