[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[EnergyPlus_Support] dualsetpoint deadband
Sorry All,
Disregard my previous message, when i exported the geometry from design builder it assigned a schedule to the reporting of the mean air temperature which shifted the curve when i was viewing it in the Result Viewer.
I had another question though. When using the dualsetpoint thermostat is there a way to enter a deadband on the heating and on the cooling setpoints? As deadband I mean for example if the heating setpoint is 20C, i would like to allow a +/- 1 degree around it so that the fans don't run constantly but intermittently rather.
Thanks
Moana
--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, "moana" <moana.reynau@...> wrote:
>
> Hi All,
>
> I'm trying to model a simple VAV system with local reheat (PIU). When I set up the availability of the air terminals to - always on - The indoor temperature is maintained within the setpoints. The problem is that at night the parallel fan runs all the time. When I set up a schedule with the fans off at night there is a short swing in temperature in the evening below the setpoint (17 deg C). Then the temperature goes back to normal.
> I checked the sizing of the heating coils and flow. Entered the values back manually and tried to oversize as well (doubles the capacity) without any effect.
> I also checked the timestep and bumped it to 30. No change.
> If you check the attached file the problem occurs in the winter (there's an example around 4th Dec).
> There's an old post from 06 refering to a similar problem. http://tech.groups.yahoo.com/group/EnergyPlus_Support/message/6649
> Not sure if this is still the same.
>
>
> Thanks for your help!
>
> The idf file is in the Files/Problem_submittals folder.
>
>
> Moana
>
------------------------------------
Primary EnergyPlus support is found at:
http://energyplus.helpserve.com or send a message to energyplus-support@xxxxxxxx
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 currently allowed but be mindful that not everyone has a high speed connection. Limit attachments to small files.
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:
EnergyPlus_Support-digest@xxxxxxxxxxxxxxx
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/