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[EnergyPlus_Support] Re: Reheat Coil Control
Dear Jean and Richard,
Thanks for your help.
Ladan
--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, Jean Marais <jeannieboef@...> wrote:
>
> Sorry, my mistake. 2) therefore does not work. Thanks Richard, I'll try and
> remember that the next time I uselessly try and use a setpointmanager for a
> furnace heater.
>
> On 19 November 2012 14:06, Richard Raustad <RRaustad@...> wrote:
>
> > **
> >
> >
> > The reheat coil in the furnace does not operate using a set point manager.
> > It operates to meet the zone sensible load as determined by the thermostat.
> > If you want the reheat coil to be off, you will have to set the capacity to
> > 0 or some small number. The heating coil in the furnace operates to meet
> > the heating load and the reheat coil operates to meet the reheat load. This
> > way you can separate the energy required for heating and reheating.
> >
> >
> > On 11/18/2012 3:28 PM, Jean Marais wrote:
> >
> > Two options. 1) make the availibility of the gas furnace coil schedule
> > always-0 or 2) set a setpointmanager:singelzone on the exit of the heating
> > coil with the setpoint limits from say 4 low and 15 high...this will make
> > the furnace coil only heat up air to a max of 15 degC and the reheat coil
> > will do the rest of the work.
> >
> > On 17 November 2012 23:49, Ladan <ladan_joon@...> wrote:
> >
> >>
> >>
> >> Hi Everyone,
> >>
> >> I have a question about controlling my electric reheat coil in
> >> AirTerminal:Constant Volume Air:Reheat.
> >>
> >> I have a single zone office space, with DX cooling coil and gas furnace.
> >> To control humidity in the zone in early occupied hours of a summer day, I
> >> have set up a humidistat with max humidity ratio setpoint manager. The
> >> setpoint node is located on my cooling coil outlet.
> >>
> >> When I look at my hourly results, I see that humidity is controlled in my
> >> zone, but the Reheat Coil electric consumption is zero; instead, the gas
> >> furnace is generating heat in those early occupied hours of summer days.
> >>
> >> So, my question is how I should make the reheat coil work rather than the
> >> furnace?
> >>
> >> Thank you very much for your help,
> >>
> >> Ladan
> >>
> >>
> >
> > --
> > 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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