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Re: [EnergyPlus_Support] EPlus vs Design Builder - Modelling Air Handling Units with Heat Recovery
The Variable Refrigerant Flow (VRF) or Variable Refrigerant Volume (VRV)
AC model is not currently available in E+. This model may be added in
the near future as time permits.
Maria Agustin wrote:
>
> Thanks for the input Mahabir.
> I need to model a reidential single detach where it uses a Variable
> Refrigerant Systems (VRV).
> The Outside air requirement is treated via a fancoil unit fitted with
> a heat exchanger and the internal loads are served by a secondary FCU
> connected to the same condensiong units.
> Is it possible to model this systems in E+ or DB?
>
> appreciate your help.
>
> regards
>
> MT D Agustin
>
> Mahabir Bhandari <bhandari@xxxxxxxxxxxxxxxxxxxxxxxxx
> <mailto:bhandari%40designbuildersoftware.com>> wrote:
> Allen,
>
> Here is the definition of purchased air from E+ Input Output Reference
> Manual..
>
> Purchased Air
>
> The simplest piece of zone equipment is the Purchased Air component. The
> name –
>
> Purchased Air – is an analogy with Purchased:Chilled Water and
> Purchased:Hot
> Water. Of
>
> course one can’t normally buy conditioned air. Purchased air is used in
> situations where the
>
> user wishes to study the performance of a building with an ideal
> system. In
> such a case,
>
> purchased air is usually the sole conditioning component: the user
> does not
> need to specify
>
> air loops, water loops, etc. All that is needed for the ideal system are
> zone controls, zone
>
> equipment configurations, and the purchased air components.
>
> It is not correct that DesignBuilder only uses purchased air .
> Purchased air
> (Simple HVAC) is one of the options. Another option is Compact HVAC. For
> more information on Compact HVAC systems, please visit:
>
> http://www.designbuilder.co.uk/programhelp/hvac_system_type.htm
> <http://www.designbuilder.co.uk/programhelp/hvac_system_type.htm>
>
> Currently in DesignBuilder, you can't simulate heat recovery with fan coil
> units. Heat recovery is used only centralized systems such as VAV with
> terminal reheat. This option will be available in version 2.0 (expected to
> be released this summer) which will have detailed HVAC option as well.
>
> Regards,
>
> Mahabir Bhandari
>
> _____
>
> From: EnergyPlus_Support@xxxxxxxxxxxxxxx
> <mailto:EnergyPlus_Support%40yahoogroups.com>
> [mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx
> <mailto:EnergyPlus_Support%40yahoogroups.com>] On Behalf Of Maria Agustin
> Sent: Tuesday, January 22, 2008 11:20 AM
> To: EnergyPlus_Support@xxxxxxxxxxxxxxx
> <mailto:EnergyPlus_Support%40yahoogroups.com>
> Subject: Re: [EnergyPlus_Support] EPlus vs Design Builder - Modelling Air
> Handling Units with Heat Recovery
>
> Can you please provide definition of purchased air.
>
> Bing Dong <bingcat2007@ <mailto:bingcat2007%40gmail.com> gmail.com> wrote:
> No airloop, plant and water loop.
> Only purchased air if I was not wrong
>
> Allen
>
> On Jan 22, 2008 9:41 AM, André Lopes <andr_lopes2000@
> <mailto:andr_lopes2000%40yahoo.com> yahoo.com> wrote:
>
> > Hello
> >
> > What do you mean by: "There is real HVAC system in there."
> >
> > Regards
> >
> > A L
> >
> >
> > ----- Original Message ----
> > From: Bing Dong <bingcat2007@ <mailto:bingcat2007%40gmail.com> gmail.com
> <bingcat2007%40gmail.com>>
> > To: EnergyPlus_Support@ <mailto:EnergyPlus_Support%40yahoogroups.com>
> yahoogroups.com<EnergyPlus_Support%40yahoogroups.com>
> > Sent: Tuesday, January 22, 2008 2:31:29 PM
> > Subject: Re: [EnergyPlus_Support] EPlus vs Design Builder -
> Modelling Air
> > Handling Units with Heat Recovery
> >
> > DesignBuilder will simulate the purchased air. There is real HVAC system
> > in
> > there.
> >
> > Allen
> >
> > On Jan 22, 2008 9:28 AM, André Lopes <andr_lopes2000@ yahoo.com> wrote:
> >
> > > Hello
> > >
> > > I am modelling a System that has:
> > >
> > > Heating: Boiler, Water Radiators
> > >
> > > Cooling: Chiller, Fan-Coil
> > >
> > > Fresh-Air:Air- Handling Units with Heat Recovery
> > >
> > > Using Design Builder and / or EnergyPlus, how should I Simulate the
> > > Air-Handling Units with Heat Recovery?
> > >
> > > Best Regards
> > >
> > > A L
> > >
> > > ____________ _________ _________ _________ _________ _________ _
> > > Never miss a thing. Make Yahoo your home page.
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> >
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> >
> >
> >
>
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>
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