[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [EnergyPlus_Support] IdealLoads and Thermostats

1) You have the heating and cooling set points reversed.
2) If the space is allowed to float (i.e., no thermostat), there will 
not be any heating or cooling.
3) Now you know what happens when the conditions float, so add a 
thermostat to see what the loads are when the conditions are controlled..

a10alw wrote:
>
> Does the ZoneHVAC:IdealLoadsAirSystem object always require a
> thermostat? I'm trying to model a condition where an atrium space -
> which is surrounded by offices - is used as a return air plenum for
> the office spaces.
>
> To keep things simple, I've used the IdealLoads object and set my
> Heating Supply Air Temp to 24 deg C and my Cooling Supply Air Temp to
> 20 deg C. I haven't included a thermostat in order to see what
> happens if conditions in the highly glazed atrium are allowed to float.
>
> However, when I do this, the 'System Node Temp' results for the Zone
> Supply Air Node' to the atrium are not 24 and 20. They actually look
> like they're the same as the Return Air Node for that zone.
>
> Any thoughts? Do you always need a thermostat with IdealLoads? If
> so, should I just model this with a simple AirDistributionUnit?
>
> Thanks!
>
> 

-- 
Richard A. Raustad
Senior Research Engineer
Florida Solar Energy Center
University of Central Florida
1679 Clearlake Road
Cocoa, FL  32922-5703
Phone:   (321) 638-1454
Fax:     (321) 638-1439 or 1010
Visit our web site at: http://www.fsec.ucf.edu

UCF - From Promise to Prominence: Celebrating 40 Years



------------------------------------

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.pdf under the Documentation link and press the "search" button.
Yahoo! Groups Links

<*> To visit your group on the web, go to:
    http://groups.yahoo.com/group/EnergyPlus_Support/

<*> Your email settings:
    Individual Email | Traditional

<*> To change settings online go to:
    http://groups.yahoo.com/group/EnergyPlus_Support/join
    (Yahoo! ID required)

<*> To change settings via email:
    mailto:EnergyPlus_Support-digest@xxxxxxxxxxxxxxx 
    mailto:EnergyPlus_Support-fullfeatured@xxxxxxxxxxxxxxx

<*> To unsubscribe from this group, send an email to:
    EnergyPlus_Support-unsubscribe@xxxxxxxxxxxxxxx

<*> Your use of Yahoo! Groups is subject to:
    http://docs.yahoo.com/info/terms/