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Re: [EnergyPlus_Support] Different from reality & Ventilation related problems
Thank you for your reply, excuse me, I have no idea about differences between cooling systems and details so, I'm just using the default simple system and get the purchased cooling and heating (PURCHASED AIR TOTAL COOLING&HEATING ENERGY [J])
Similarly the ZONE/SYS SENSIBLE COOLING ENERGY [J] shows also similar pattern for cooling in both summer and winter. I'll upload a file showing an example of these results at the problem submittal area (I've also submitted a file depicting the ventilation problem there)
Waiting your reply, Thank you very much
Abeer
"Michael J. Witte" <mjwitte@xxxxxxxx> wrote:
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
>
>
>
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>
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>
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>
>
>
>
>
========================================================
Michael J. Witte, GARD Analytics, Inc.
EnergyPlus Testing and Support
EnergyPlus-Support@xxxxxxxx
Abeer M. Eisa
Assistant Lecturer - PhD Student
Department of Architecture
Ain-Shams University
Cairo Egypt
010 678 52 59
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