Re: [EnergyPlus_Support] the temp of supply air is two high!

["Michael J. Witte" <mjwitte@xxxxxxxx>]

It appears that the system for this zone is undersized.  In the eio output 
file, the Zone Sizing Information indicates that the required cooling supply 
air flow rate for zone L_EASTSOUTH ZONE is 49.800 m3/s.  The DIRECT AIR object 
for this zone is not autosized, but it is set to 39.9 m3/s.  All of the AHUs 
have fixed supply air setpoints and DIRECT AIR terminal units.  These systems 
have no way to control the zone temperature.

Also, I see that there are fan coil units decribed which are not included in 
the zone equipment lists.  Is this intentional?

Mike


On 3 Jan 2005, at 3:36, zyyh9819 wrote:

> 
> 
> Dear all,
> 
>    I want to simulate a 25-story building. i divide the building into
> 8 zones to simulate.There are 8 AHUs in this building. Each AHU 
> serves for one zone.
>    I set the temp of supply air to 16¡æ. But in the result of my 
> simulation, I find the temp of supply air in one zone is two high(21-
> 24¡æ), so the Mean Air Temperature in this zone is too high. The 
> other zones are OK. I have checked my idf file, but I can not find 
> the reason. Please help me! Thanks a lot!
>   i upload my idf file! If required, please check it!
>   (The problem lies in L_eastsouth zone, and the Air Primary Loop in 
> L_eastsouth zone is AHU_1401 Loop.)
> 
> 
> 
> 
> 
> 
> 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.
> 
> Yahoo! Groups Links
> 
> 
> 
> 
> 
> 
> 
> 
> 



========================================================
Michael J. Witte, GARD Analytics, Inc.
EnergyPlus Testing and Support      
EnergyPlus-Support@xxxxxxxx




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