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[EnergyPlus_Support] Re: error running Chiller plant
Hello,
Please try setting the rated pump head on all pumps to 1 Pa, and check if there is any change in the errors.
MN
--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, Javed Iqbal <eee.javed@...> wrote:
>
> Dear Edwin,
>
> Please find attached svg file for the same. This project has VAV and FCU in
> different zones. I have used Standard HVAc template to model the same. As
> my design case doesn't have any heating so i used "Always OFF" schedule for
> FCU heating so that boiler will not sense any load. I have checked report
> for boiler Energy consumption and it shows *zero*. My only concern is there
> might be some problem at the loop.
>
> Thanks for help!
>
> On Wed, Jul 4, 2012 at 11:31 AM, Edwin Lee <leeed2001@...> wrote:
>
> > **
> >
> >
> > It could be, but it would likely be a non-intuitive node connection error.
> > If it is a blatently invalid topology, that *should* be trapped early.
> > However, if components are hooked up in a non-standard way, it may have
> > not been detected, yet the results will be invalid. I think you will
> > really want to provide a schematic of what you wanted to model, and then
> > provide the svg output of the actual run.
> >
> > Edwin
> >
> >
> > On Wed, Jul 4, 2012 at 1:28 PM, Jean marais <jeannieboef@...> wrote:
> >
> >> **
> >>
> >>
> >>
> >> one of the earlier warnings mentioned Hot Water Loop. Could there be a
> >> node connection mistake?
> >>
> >>
> >> --- In EnergyPlus_Support@xxxxxxxxxxxxxxx, Javed Iqbal <eee.javed@>
> >> wrote:
> >> >
> >> > Hi,
> >> >
> >> > I am using Constant Primary and Variable secondary chilled water
> >> > pump. Condenser water pump is also *variable* but hot water pump is *
> >> > constant speed*. All fields are autosize..
> >> >
> >> > thanks
> >> >
> >> > On Wed, Jul 4, 2012 at 10:52 AM, Mário <mneves32@> wrote:
> >> >
> >> > > **
> >>
> >> > >
> >> > >
> >> > > Hello,
> >> > >
> >> > > What kind of pumps, are you using?
> >> > > What is your pump head set to?
> >> > > How are you controling the pump operation?
> >> > >
> >> > > Sometimes when I get these kind of errors in the cooling plant it´s
> >> > > because of the pumps.
> >> > >
> >> > > Best
> >> > >
> >> > > MN
> >> > >
> >> > >
> >> > > --- In EnergyPlus_Support@xxxxxxxxxxxxxxx, Edwin Lee <leeed2001@>
> >> > > wrote:
> >> > > >
> >> > > > Are you getting any other errors or warnings? Looks like the loop
> >> is out
> >> > > > of control. Some more information on your loop is really needed to
> >> > > > identify the problem.
> >> > > >
> >> > > > Edwin
> >> > > >
> >> > > > On Wed, Jul 4, 2012 at 10:37 AM, Javed Iqbal <eee.javed@> wrote:
> >> > > >
> >> > > > > **
> >> > >
> >> > > > >
> >> > > > >
> >> > > > > Hi All,
> >> > > > >
> >> > > > > I am getting following warning.What could be the possible reason?
> >> I am
> >> > > > > trying to model central plant with VAV.
> >> > > > >
> >> > > > > Thanks!
> >> > > > >
> >> > > > > ** Warning ** GetDensityGlycol: Temperature out of range (too
> >> high) for
> >> > > > > fluid density
> >> > > > > ************* ** ~~~ ** This error occurred 106213 total times;
> >> > > > > ************* ** ~~~ ** during Warmup 0 times;
> >> > > > > ************* ** ~~~ ** during Sizing 0 times.
> >> > > > > ************* ** ~~~ ** Max=173.136908 {C} Min=100.001832 {C}
> >> > > > > *************
> >> > > > > ************* ** Warning ** Plant loop exceeding upper temperature
> >> > > > > limit, PlantLoop="HOT WATER LOOP HOT WATER LOOP"
> >> > > > > ************* ** ~~~ ** This error occurred 95517 total times;
> >> > > > > ************* ** ~~~ ** during Warmup 0 times;
> >> > > > > ************* ** ~~~ ** during Sizing 0 times.
> >> > > > > ************* ** ~~~ ** Max=173.15264
> >> > > > > *************
> >> > > > > ************* ** Warning ** GetSpecificHeatGlycol: Temperature
> >> out of
> >> > > > > range (too high) for fluid specific heat
> >> > > > > ************* ** ~~~ ** This error occurred 3928457 total times;
> >> > > > > ************* ** ~~~ ** during Warmup 0 times;
> >> > > > > ************* ** ~~~ ** during Sizing 0 times.
> >> > > > > ************* ** ~~~ ** Max=173.195998 {C} Min=125.004998 {C}
> >> > > > > *************
> >> > > > > ************* ** Warning ** CoolingTower:VariableSpeed "MAIN
> >> TOWER" -
> >> > > > > Tower approach temperature is out of range error continues...
> >> > > > > ************* ** ~~~ ** This error occurred 21 total times;
> >> > > > > ************* ** ~~~ ** during Warmup 0 times;
> >> > > > > ************* ** ~~~ ** during Sizing 0 times.
> >> > > > > ************* ** ~~~ ** Max=1.093516 Min=0.36124
> >> > > > > --
> >> > > > >
> >> > > > >
> >> > > > > Javed Iqbal, LEED AP, CEA
> >> > > > > Energy Analyst
> >> > > > >
> >> > > > >
> >> > > > >
> >> > > > >
> >> > > > >
> >> > > > > --
> >> > > > >
> >> > > > >
> >> > > > > Javed Iqbal, LEED AP, CEA
> >> > > > > Energy Analyst
> >> > > > >
> >> > > > >
> >> > > > >
> >> > > > >
> >> > > >
> >> > > >
> >> > > >
> >> > > > --
> >> > > > Edwin Lee
> >> > > > Doctoral Candidate, Oklahoma State University
> >> > > > ASHRAE Student Member, *Former* ASHRAE OSU Student Branch President
> >> > > > Office: ATRC 303: 405-744-3727
> >> > > >
> >> > >
> >> > >
> >> > >
> >> >
> >> >
> >> >
> >> > --
> >> >
> >> >
> >> > Javed Iqbal, LEED AP, CEA
> >> > Energy Analyst
> >> >
> >>
> >>
> >
> >
> > --
> > Edwin Lee
> > Doctoral Candidate, Oklahoma State University
> > ASHRAE Student Member, *Former* ASHRAE OSU Student Branch President
> > Office: ATRC 303: 405-744-3727
> >
> >
> >
>
>
>
> --
>
>
> Javed Iqbal, LEED AP, CEA
> Energy Analyst
>
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