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[EnergyPlus_Support] Re: AHU not turning on
I saw in the eso that the fan is drawing electricity at the schuduled time, so I assumed the fan was turning on. I saw the system and airloop was turning on, but the air flow remained zero, which lead me to believe that the fan is working and making pressure, but that as the air in the zone has nowhere to go, that the back pressure simply builds up and no flow insues. I'm assuming that these are supply fans. I did not check the fan schedule. your schedules themselves looked good.
I'll have another look on Monday.
--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, "grandocu" <jgrando@...> wrote:
>
> Actually the fan never turns on if you look at the .eso file. It is zero for the whole day. I don't get how this particular airloop is refusing to turn on.
>
> --- In EnergyPlus_Support@xxxxxxxxxxxxxxx, "jeannieboef" <jeannieboef@> wrote:
> >
> > 1)It looks like you pump air into the room but nothing gets out...
> > ** Warning ** In AirLoopHVAC AHU-B-5 there is unbalanced exhaust air flow.
> > ** ~~~ ** During Warmup, Environment=ANNSIM, at Simulation time=07/20 06:00 - 06:10
> > ** ~~~ ** Unless there is balancing infiltration / ventilation air flow, this will result in
> > ** ~~~ ** load due to induced outdoor air being neglected in the simulation.
> >
> > I would check the node connections. Nothing obvious.
> >
> > --- In EnergyPlus_Support@xxxxxxxxxxxxxxx, "grandocu" <jgrando@> wrote:
> > >
> > >
> > > Okay, just posted it to the user exchange as building.zip with subtitle "AHU Problem". Thank you for your help.
> > >
> > >
> > > --- In EnergyPlus_Support@xxxxxxxxxxxxxxx, "jeannieboef" <jeannieboef@> wrote:
> > > >
> > > > I don't have access here it appears...could you upload it to Files/User Exchange?
> > > >
> > > > --- In EnergyPlus_Support@xxxxxxxxxxxxxxx, "grandocu" <jgrando@> wrote:
> > > > >
> > > > > It's labeled as building.zip with the sub-title "AHU Problem" Thanks. The availability is ON for the system.
> > > > >
> > > > > --- In EnergyPlus_Support@xxxxxxxxxxxxxxx, "jeannieboef" <jeannieboef@> wrote:
> > > > > >
> > > > > > Check both the system availibility and the fan availibility is ON. I don't see your file. Is it in Files/Problem Submittals?
> > > > > >
> > > > > > --- In EnergyPlus_Support@xxxxxxxxxxxxxxx, "grandocu" <jgrando@> wrote:
> > > > > > >
> > > > > > > Hello,
> > > > > > >
> > > > > > > I have an air handling unit that is not turning on even though it is scheduled on and has a cooling load not met. I have no idea why it's refusing to run. I have attached the .idf please let me know if anyone has any idea why this is happening.
> > > > > > >
> > > > > > > I posted the problem in 'files' under "AHU Problem".
> > > > > > >
> > > > > > > Thank you.
> > > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
>
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