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[EnergyPlus_Support] dualsetpoint deadband
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.
--- 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.
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