[EnergyPlus_Support] Re: HVAC Descriptions

["msemech" <msemech@xxxxxxxxx>]

Some clarification is needed here.

In HVAC Parlance, a "multizone" is a single central unit that 
provides individual control to several zones through several 
different individual duct systems.

It does not behave like a single zone/constant volume system.

Having said that, does DB or EnergyPlus mean something different by 
the use of the term "multizone"?

Thanks, Gentlemen.

Bruce J. Gustafson

--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, "Andy Tindale" <andy@...> 
wrote:
>
> You can serve multiple zones in DesignBuilder with a single unitary 
system
> by selecting an HVAC template using the 'Unitary multizone' compact 
HVAC
> type.  In this case, it is necessary to set one of the zones as 
being
> thermostatic control zone.
> 
> Andy
> 
> -----Original Message-----
> From: EnergyPlus_Support@xxxxxxxxxxxxxxx
> [mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx]On Behalf Of Michael J. 
Witte
> Sent: 23 April 2007 17:37
> To: EnergyPlus_Support@xxxxxxxxxxxxxxx
> Subject: Re: [EnergyPlus_Support] HVAC Descriptions
> 
> 
> I am not sure if there is a way within DesignBuilder to serve 
multiple zones
> on
> the same unitary system.
> 
> One approach is to delete all of the DesignBuilder HVAC input 
objects, then
> use
> COMPACT HVAC:ZONE:UNITARY and COMPACT HVAC:SYSTEM:UNITARY to create 
a single
> HVAC system serving multiple zones, designating one zone to be the 
control
> zone.
> 
> Mike
> 
> 
> On 23 Apr 2007 at 15:04, msemech wrote:
> 
> > Greetings:
> >
> > A basic question.
> >
> > I'm doing an energy analysis to ASHRAE 90.1.  We've created the 
model
> > using DesignBuilder (DB), but that doesn't do enough for us with 
HVAC
> > system descriptions.
> >
> > We understand, in a basic fashion, how to read the IDF files.  We 
need
> > to model a building that has several different "zones" on a 
constant
> > volume-single zone system.  DB creates a separate system for each 
zone
> > of control.
> >
> > Question: How is each zone "linked" to the HVAC system?
> >
> > Bruce J. Gustafson
> >
> >
> >
> > The primary EnergyPlus web site is found at:
> > http://www.energyplus.gov
> >
> > The group web site is:
> > http://groups.yahoo.com/group/EnergyPlus_Support/
> >
> > Attachments are not allowed -- please post any files to the 
appropriate
> folder
> > in the Files area of the Support Web Site.
> >
> > EnergyPlus Documentation is searchable.  Open EPlusMainMenu.pdf 
under the
> > Documentation link and press the "search" button.
> >
> > Yahoo! Groups Links
> >
> >
> >
> >
> >
> 
> 
> ========================================================
> Michael J. Witte, GARD Analytics, Inc.
> EnergyPlus Testing and Support
> EnergyPlus-Support@...
> 
> 
> 
> 
> 
> The primary EnergyPlus web site is found at:
> http://www.energyplus.gov
> 
> The group web site is:
> http://groups.yahoo.com/group/EnergyPlus_Support/
> 
> Attachments are not allowed -- please post any files to the 
appropriate
> folder in the Files area of the Support Web Site.
> 
> EnergyPlus Documentation is searchable.  Open EPlusMainMenu.pdf 
under the
> Documentation link and press the "search" button.
> 
> Yahoo! Groups Links
>




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