Re: [EnergyPlus_Support] Different from reality & Ventilation related problems

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

Regarding the winter cooling loads, it is impossible to answer this without 
more information.  What is being reported as "cooling"?  If it is "Zone/Sys 
Sensible Cooling Energy", then this may just indicate that the supply ar is 
cooler than the space.  Are you actually getting cooling coil and/or chiller 
loads?

Mike


On 31 Oct 2007 at 19:53, abeermme wrote:

> Hi,
> I'm simulating an office space in a hot arid area, whose winter is 
> cold so it's not a common practice to need cooling in cold months 
> even in office buildings whose internal gains are high, (sometimes 
> in few cases natural ventilation might be used when internal 
> temperatures are relatively high) BUT so far, all results show 
> considerable cooling loads in these months! I tried reducing internl 
> gains, different space ratios and other options that might be 
> relevant but still getting same results of cold months cooling.
> - Thinking that the problem might be because of the use of natural 
> ventilation as "scheduled", I tried setting it to b "calculate" but 
> got an error message saying: [b][i]"**FATAL: 
> GetAirFlowNetworkInput": Program terminates for perceding reason(s) 
> Please check the EnergyPlus error file for more information"[/i][/b]
> In energy plus err. file many severe errors appeared as follows:
> [b][i]" ** Severe  ** GetAirflowNetworkInput: The number of 
> AIRFLOWNETWORK:MULTIZONE:COMPONENT ZONE EXHAUST FAN is not equal to 
> the number of Zone exhaust fans defined in CONTROLLED ZONE EQUIP 
> CONFIGURATION
>    **   ~~~   ** The number of AIRFLOWNETWORK:MULTIZONE:COMPONENT 
> ZONE EXHAUST FAN is 0
>    **   ~~~   ** The number of Zone exhaust fans defined in 
> CONTROLLED ZONE EQUIP CONFIGURATION is 4
>    ** Severe  ** GetAirflowNetworkInput: Zone Exhaust Fan is not 
> defined in AIRFLOWNETWORK:MULTIZONE:COMPONENT ZONE EXHAUST FAN
>    **   ~~~   ** Zone Air Exhaust Node in CONTROLLED ZONE EQUIP 
> CONFIGURATION =5468 FAN COIL RETURN"[/i][/b]
> Could you please help by giving probable reasons for the 1st topic 
> and some solution to the second?
> Your help is urgently needed and highly appreciated.
> Thanks, regards
> Abeer
> 
> 
> 
> The primary EnergyPlus web site is found at:
> http://www.energyplus.gov
> 
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> 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.pdf under the
> Documentation link and press the "search" button.
> 
> Yahoo! Groups Links
> 
> 
> 
> 
> 


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





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