[EnergyPlus_Support] Re: regeneration coil

["davide.loba" <davide.loba@xxxxxxxxx>]

There is not any error because I don't insert any regeneration air 
heater under DESICCANT DEHUMIDIFIER section. I would a water coil as 
regeneration coil, not a gas or electric one, and I'm trying a 
different strategy. I "manually" put a water coil just before the 
Desiccant Heat Exchanger, and control it with a CONTROLLER:SIMPLE 
controller and a SCHEDULE:SETPOINT setpoint on air outlet node. Thus, 
I don't get any error, but the coil is always off. Maybe it is not 
possibile to control a coil placed on relief air stream. 
What do you think? 


--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, Richard Raustad 
<RRaustad@...> wrote:
>
> The desiccant dehumidifier only allows an electric or gas heating 
coil 
> in the regeneration air stream. Without one of these heating coil 
types, 
> you should get an error. Is there any errors in the err file?
> 
> davide.loba wrote:
> >
> > Thank you Richard for your reply.
> > I have already "listed" the coil in the OUTSIDE AIR SYSTEM 
EQUIPMENT,
> > as last component, but I have the same problem. Also the schedules
> > seem to be ok.
> > Have you got another advice?
> > Loba
> >
> > --- In EnergyPlus_Support@xxxxxxxxxxxxxxx 
> > <mailto:EnergyPlus_Support%40yahoogroups.com>, Richard Raustad
> > <RRaustad@> wrote:
> > >
> > > Did you "list" the HW coil type and name in the Outside Air 
System
> > object?
> > > You would also want the HW coil to turn on only when the 
desiccant
> > > system is on. The only way I can think of is to manually create 
an
> > > availability schedule for the HW coil based on the times when 
the
> > > desiccant system operates.
> > >
> > > davide.loba wrote:
> > > >
> > > > Hi all,
> > > >
> > > > I have a problem with a desiccant dehumidifier, placed in the
> > outside
> > > > air system. I need to simulate a hot water coil as 
regeneration
> > air
> > > > heater, instead of a gas coil. To do that, I left blank the 
fields
> > > > about the regeneration air heater in DESICCANT DEHUMIDIFIER
> > object, and
> > > > I put a COIL:Water:SimpleHeating coil in the outside air 
system.
> > To
> > > > control it, I use a CONTROLLER:SIMPLE controller, with the air
> > outlet
> > > > node as control_node, and water inlet node as actuator_node.
> > There is a
> > > > SET POINT:MANAGER:SCHEDULED fixed setpoint temperature (70°C) 
on
> > air
> > > > outlet node.
> > > > The simulation ends correctly, without any severe error, but 
the
> > > > regeneration coil doesn't work: "total water heating coil 
rate" is
> > > > always 0.
> > > > Is it possibile to simulate this type of system?
> > > >
> > > > Thanks in advance for your help.
> > > >
> > > > Loba
> > > >
> > > >
> > >
> > > --
> > > 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 
<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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