Re: [EnergyPlus_Support] Can simulate the energy consumption of VRVsystem

[li yuandan <liyuandan2000@xxxxxxxxx>]

Mike, thanks for your help. I don't have any part-load
efficiency data at my hand.If got some, I will share
with you.
Regards,
Li Yuandan

--- "Michael J. Witte" <mjwitte@xxxxxxxx> 的正文：>
EnergyPlus does not have such a model.  All of the
> EnergyPlus DX systems are 
> one compressor to one indoor DX coil.  The only
> option would be to model each 
> indoor unit with its own outdoor unit and
> approximate the part load performance 
> curve.  Do you have part-load efficiency data for
> these units?
> 
> Mike
> 
> 
> 
> 
> On 1 Dec 2003, at 9:40, li yuandan wrote:
> 
> > Thanks for your reply.
> > You are correct, the VRV system is a air-to-air DX
> > system. However,it is different from other
> > conventional DX system.
> > Generally,VRV system uses 2 compressor. One
> constant
> > speed compressor, the other is a variable-speed
> > compressor. VRV is also a multi-dx system. The
> most
> > common configuration is one outdoor unit (with 2
> > compressors) serves about 6,8 or much more indoor
> > units.
> > Best regards,
> > li yuandan
> > Shanghai, P.R.C
> > --- "Michael J. Witte" <mjwitte@xxxxxxxx>
> 的正文：> I
> > am not familiar with the "VRV system".  Based on a
> > > quick look at Daikin's web 
> > > site, it appears to be a direct expansion (DX)
> > > air-to-air heat pump with a heat 
> > > recovery (reclaim) option.  Is that correct?  Do
> > > these units have one 
> > > compressor for each indoor coil?  
> > > 
> > > EnergyPlus can model DX air-to-air heat pumps
> and
> > > heat recovery units.  You 
> > > would need to determine the performance
> > > specifications for the particular unit 
> > > you wish to model.
> > > 
> > > Mike
> > > 
> > > 
> > > On 27 Nov 2003, at 8:31, liyuandan2000 wrote:
> > > 
> > > > Dear all,
> > > > As Daikin are highly promoting their VRV
> system.
> > > Is it possible to 
> > > > use E+ to do the simulation? I need to make a
> > > energy comparison 
> > > > between VRV and other conventional system.
> > > > Regards,
> > > > liyuandan2000
> > > > Shanghai, China.
> > > > 
> > > > 
> > > > 
> > > > 
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>
========================================================
> > > Michael J. Witte, GARD Analytics, Inc.
> > > EnergyPlus Testing and Support      
> > > EnergyPlus-Support@xxxxxxxx
> > > 
> > >  
> > 
> > =====
> > 
> > 
> >
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