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[EnergyPlus_Support] Re: An error when applied the UCSD Displacement Ventilation Module
Hi , was there ever a solution to the problem stated below? I have the same problem when using E+ v5.0 .
--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, Zhen Tian <tianzhen9@...> wrote:
>
> Thanks, Mike.
>
> If I delete all the Room Air Mode for the zones with the UCDS DV, then these errors are gone,even I have the RoomAir Mode inputs for the UCDS UFAD. It seems this error is in the DV mode itself.
>
> I checked the zone inputs for the internal loads. These inputs are based on design data and all seems normal.
>
> Thanks.
>
> Regards,
>
> David
>
> "Michael J. Witte" <mjwitte@...> wrote: This type of error will trip on the first zone that goes past the limit, so it
> is not surprising that fixing one zone will lead to failure in another similar
> zone. If you delete all of the room air models, does the simulation run
> normally?
>
> Mike
>
> On 4 Feb 2008 at 12:40, Zhen Tian wrote:
>
> > Thanks, Mike.
> >
> > Actually this error only appears when I add the UCSD DV module into the zones.
> > There is no problem when I use the UCSD UFAD module or use conventional mixing
> > module.
> >
> > I tried to delete the RoomAir Model for the zone with errors. Then, another zone
> > appears the same error and causes the simulation to crash.
> >
> > Thanks.
> >
> > Regards,
> >
> > David
> >
> >
> >
> > "Michael J. Witte" <mjwitte@...> wrote: It is
> > difficult to say without more information. My guess is that there is
> > something wrong with the ventilation inputs and the zone is overheating from
> > solar or internal gains. Did the simulation progress far enough to report any
> > output? Perhaps you can report zone air and surface temperatures and determine
> > more about the problem.
> >
> > Mike
> >
> > On 29 Jan 2008 at 13:12, Zhen Tian wrote:
> >
> > > Dear all,
> > >
> > > I modeled one floor of a building with displacement ventilation builidng. I
> > used > the UCSD Displacement ventilation module in my simulaiton model. Then I
> > got the > following warnings and error. > > "Warning ** Calculated Relative
> > Humidity out of range (PsyRhFnTdbWPb) > ** ~~~ ** Occurrence
> > info=CALGARY INT'L AB CAN WYEC2-B-25110 > WMO#=718770, 01/02 05:00 - 05:10
> > ** ~~~ ** Dry-Bulb= -333.04 Humidity > Ratio= 1.000E-005 Calculated
> > Relative Humidity (fraction)= 844.67 ** ~~~ > ** Relative Humidity being
> > reset to 1.0 > ... > > Severe ** Temperature out of bounds (219.18) for
> > surface=SUBOBJ:0468 > ** ~~~ ** in Zone=Z106 > ** ~~~ **
> > Occurrence info=CALGARY INT'L AB CAN WYEC2-B-25110 > WMO#=718770, 01/02
> > 05:05 - 05:06 ** ~~~ ** A temperature out of bounds > problem can be
> > caused by several things. The user ** ~~~ ** should check > the weather
> > environment, the level of internal gains with respect ** ~~~ > ** to the
> > zone, and the thermal properties of their materials among other > things. **
> > ~~~ ** A common cause is a building with no thermal mass -- > all
> > materials with ** ~~~ ** Regular-R definitions." > > But I did not use
> > reguar-r for building materials and construciton. In addition, > the model
> > without the UCSD DV module has not problem. > > Does someone has the same
> > experiences before and can tell me how to resolve this > issue? > > Thanks a
> > lot in advance. > > Regards, > > David > > > >
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> > ========================================================
> > Michael J. Witte, GARD Analytics, Inc.
> > EnergyPlus Testing and Support
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> ========================================================
> Michael J. Witte, GARD Analytics, Inc.
> EnergyPlus Testing and Support
> EnergyPlus-Support@...
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