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

["Michael J. Witte" <mjwitte@xxxxxxxx>]

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> µÄÕýÎÄ£º> 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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