[EnergyPlus_Support] Re: FanPerformance:NightVentilation: nightmanager not turning fan on? Any ideas?

["Jean marais" <jeannieboef@xxxxxxxxx>]

Wow, that' a great manager. Thanks.

--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, Chandan Sharma <csharma@...> wrote:
>
> You are using AvailabilityManager:NightCycle. I think you should use  
> AvailabilityManager:NightVentilation with FanPerformance:NightVentilation.
> IO Ref page 1619 (1660 absolute).
> Hope this helps.
> Chandan
> 
> On 8/25/2011 8:35 AM, Jean marais wrote:
> >
> > I am trying to reduce the fan flowrate to 30% during night 
> > hours...using FanPerformance:NightVentilation
> >
> > Schedule:Compact,
> > DOAS Supply Fan 100 Percent,
> > Any Number,
> > Through: 12/31,
> > For: AllDays,
> > Until: 05:00, 0,
> > Until: 22:00, 1,
> > Until: 24:00, 0;
> >
> > Schedule:Compact,
> > DOAS Supply Fan 30 Percent,
> > Any Number,
> > Through: 12/31,
> > For: AllDays,
> > Until: 05:00, 1,
> > Until: 22:00, 0,
> > Until: 24:00, 1;
> >
> > Fan:VariableVolume,
> > DOAS Supply Fan, !- Fan Name
> > DOAS Supply Fan 100 Percent, !- Availability Schedule Name
> > .7, !- Fan Efficiency
> > 0, !- Delta Pressure {Pa}
> > 555, !- Max Flow Rate {m3/s} 555,
> > Fraction, !- Min Flow Rate Input Method , FixedFlowRate
> > 1, !- Min Flow Fraction
> > 0, !- Min Air Flow Rate {m3/s}
> > 1, !- Motor Efficiency
> > 1, !- Motor in Airstream Fraction
> > 0.35071223, !- Fan Coefficient 1
> > 0.30850535, !- Fan Coefficient 2
> > -0.54137364, !- Fan Coefficient 3
> > 0.87198823, !- Fan Coefficient 4
> > 0, !- Fan Coefficient 5
> > DOAS Cooling Coil Air Outlet, !- Fan Inlet Node
> > DOAS Supply Fan Outlet; !- Fan Outlet Node Name
> >
> > AvailabilityManagerAssignmentList,
> > AHU Availability Managers, !- Name
> > AvailabilityManager:NightCycle, !- System Availability Manager type
> > DOAS Availability; !- System Availability Manager name
> >
> > AvailabilityManager:NightCycle,
> > DOAS Availability, !- Name
> > DOAS Supply Fan 30 Percent, !- Applicability Schedule Name
> > DOAS Supply Fan 100 Percent, !- Fan Schedule Name
> > CycleOnAny, !- Control Type
> > 1, !- thermostat on/off tolerance {deltaC}
> > 3600, !- Cycling run time {s}
> > ; !- Control Zone Name
> >
> > !-specifies alternative parameters for fan.
> > !-These alternate parameters are used when a system manager
> > !-(such as AvailabilityManager:NightVentilation) sets a specified flow 
> > rate for a central forced air system.
> > FanPerformance:NightVentilation,
> > DOAS Supply Fan, !- Fan Name
> > 0.7, !- Fan Efficiency
> > 0, !- Pressure Rise {Pa}
> > 166.6, !- Maximum Flow Rate {m3/s} !30% of 395 = 118.5.....50% of 395 
> > = 197.5
> > 1, !- Motor Efficiency
> > 1.0; !- Motor in Airstream Fraction
> >
> >
>




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