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[EnergyPlus_Support] Re: Cooling Part-Load of VRF System
Thank you very much for your help!
I have a question one more.
I am examining the 'Creating Performance Curves for Variable Refrigerant Flow Heat Pumps in EnergyPlus'you write.
I think start up curve is explained in the 'Cooling Part-Load Fraction Correlation Curve'section, isn't it?
Do you mean application of 'Cooling Part-Load Fraction Correlation Curve'is not yet impossible?
I apply this curve, but there is no change at initial part.
Pleas give me a answer.
Thank you.
--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, Richard Raustad <RRaustad@...> wrote:
>
> Start up curves are not included in the VRF model. There is a start up
> delay in the VRF heat recovery model (when switching from heat pump to
> heat recovery), but this has not been included in the original heat pump
> model.
>
> On 10/23/2012 12:16 PM, soohyeunyang wrote:
> > I have modeled the VRF System using E+(version 7.0)
> > When a compressor turns on, the capacity provided does not immediately increase to the desired capacity. There is some time required to reach the steady-state capacity. So, indoor temperature falls slowly in the initial stages in cooling mode.
> > How can i the characteristic above mentioned realize in E+?
> >
> >
> >
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> --
> Richard A. Raustad
> Senior Research Engineer
> Florida Solar Energy Center
> University of Central Florida
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