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[EnergyPlus_Support] Re: Energy Plus Support help
Richard and Jason,
Thank you very much for your help! I can achieve my goal now.
Regards,
Thomas
--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, Richard Raustad <RRaustad@...> wrote:
>
> It sounds to me like you want the AHU fan and CW coil to turn on based
> on the output of the AvailabilityManager:HIghTemperatureTunOn object. In
> your file, this will turn on the AHU fan and CW coil when outside air
> temperature is above a certain value.
>
> Now you also want to turn only the fan on at all other times (or other
> times that you specify) without turning on the coils?
>
> If I am understanding this correctly, you want the fan to run all the
> time and the AHU coil and plant to turn on based on the high temperature
> turn on manager.
>
> You could probably use a scheduled system availability manager to turn
> on the air loop all the time, and then use the high temperature turn on
> manager to cycle on the plant when you need it. If the plant is off, the
> air loop coils are off.
>
> If you are using a high temperature turn on manager in both the air loop
> and the plant, then if you add a scheduled availability manager to the
> system availability manager LIST for the air loop, this might give you
> what you want. the high temperature turn on manager will turn on both
> the AHU and the plant when you want. Then the scheduled manager will
> turn on the fan any other time.
>
> There are a number of ways you can do this, you just have to try several
> combinations.
>
> On 11/23/2010 11:03 PM, thomawong8 wrote:
> >
> > Richard,
> >
> > I am sorry. I just mean that the chiller will be switched off while
> > the fan inside AHU can still operate. Or when AHU is switched off, the
> > mechanical fan starts.
> >
> > Regards,
> > Thomas
> >
> > --- In EnergyPlus_Support@xxxxxxxxxxxxxxx
> > <mailto:EnergyPlus_Support%40yahoogroups.com>, Richard Raustad
> > <RRaustad@> wrote:
> > >
> > > Are you talking about 2 different fans? How can your AHU fan be off
> > when
> > > the AHU is on?
> > >
> > > On 11/23/2010 4:26 AM, thomawong8 wrote:
> > > >
> > > > Jason,
> > > >
> > > > Thank you very much for your reply. I am so sorry that i didn't
> > > > clarify my condition. The outside air temperature determines whether
> > > > my AHU is on or off. I have used
> > > > AvailabilityManager:HighTemperatureTurn On to do that. Therefore I
> > > > cannot use simple schedule to turn on or turn off the fan. AHU
> > > > schedule is not regulate in my case. Can
> > > > AvailabilityManager:NightCycle still useful in my case? Thank yuo
> > very
> > > > much.
> > > >
> > > > Regarsd,
> > > > Thomas
> > > >
> > > > --- In EnergyPlus_Support@xxxxxxxxxxxxxxx
> > <mailto:EnergyPlus_Support%40yahoogroups.com>
> > > > <mailto:EnergyPlus_Support%40yahoogroups.com>, Jason Kirkpatrick
> > > > <jason.alan.kirkpatrick@> wrote:
> > > > >
> > > > > Thomas,
> > > > >
> > > > > Try using AvailabilityManager:NightCycle
> > > > >
> > > > > This will allow you to have the AHU fan cycle on when the AHU is
> > > > scheduled
> > > > > to be off.
> > > > >
> > > > > If you mean that you have a zone with a fan in addition to an air
> > > > handler,
> > > > > then you can just schedule these to be on or off by defining an
> > > > operating
> > > > > schedule.
> > > > >
> > > > > Regards,
> > > > >
> > > > > Jason
> > > > >
> > > > >
> > > > > On Fri, Nov 19, 2010 at 11:04 PM, Wong Thomas <thomawong8@>wrote:
> > > > >
> > > > > >
> > > > > >
> > > > > > Dear all,
> > > > > >
> > > > > > I am an undergraduate student who is using energyplus to
> > simulate the
> > > > > > energy consumption of a company. When the AHU is off, I would
> > like
> > > > to turn
> > > > > > on the mechanical fan and vice versa. I want to know if there is
> > > > any command
> > > > > > or skills which i can use. Thank you very much.
> > > > > >
> > > > > > Thomas
> > > > > >
> > > > > >
> > > > > >
> > > > > >
> > > > >
> > > >
> > > >
> > >
> > > --
> > > Richard A. Raustad
> > > Senior Research Engineer
> > > Florida Solar Energy Center
> > > University of Central Florida
> > > 1679 Clearlake Road
> > > Cocoa, FL 32922-5703
> > > Phone: (321) 638-1454
> > > Fax: (321) 638-1439 or 1010
> > > Visit our web site at: http://www.fsec.ucf.edu
> > >
> > > UCF - From Promise to Prominence: Celebrating 40 Years
> > >
> >
> >
>
> --
> Richard A. Raustad
> Senior Research Engineer
> Florida Solar Energy Center
> University of Central Florida
> 1679 Clearlake Road
> Cocoa, FL 32922-5703
> Phone: (321) 638-1454
> Fax: (321) 638-1439 or 1010
> Visit our web site at: http://www.fsec.ucf.edu
>
> UCF - From Promise to Prominence: Celebrating 40 Years
>
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