Re: [EnergyPlus_Support] Re: error running Chiller plant

Thanks for help!

On Wed, Jul 4, 2012 at 11:31 AM, Edwin Lee <leeed2001@xxxxxxxxx> 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@xxxxxxxxx> 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, MÃ¡rio <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