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[EnergyPlus_Support] Re: A Question about FAN COIL UNIT:4PIPE and COIL:water:cooling

There is a similar problem to me.
The cold water flow rate is too much down when the capacity of fan coil unit is controlled,so the cold water outlet temperature has risen.
I set field "Minimum Cold Water Flow Rate" of object "ZoneHVAC:FourPipeFanCoil" to limit reduction of the water flow rate. 
However, although a minimum cold water flow rate is set, the water flow rate is still less than it. 
There are not too many descriptions for  "Minimum Cold Water Flow Rate" in the manual. 

Hiroyuki


--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, "Michael J. Witte" <mjwitte@...> wrote:
>
> I am not an expert on the coil model, but the model is explained in the 
> Engineering Reference (p. 446, pdf p. 492).  This may be impacted by the 
> particular sizing inputs used for the coil and the plant loop.  
> 
> Mike
> 
> 
> On 21 Dec 2007 at 7:44, À?E×¼ wrote:
> 
> > Dear EnergyPlus Support Team:
> >    I am simulating a building with fancoil as its air conditioning
> > system.My IDF is just like the example file FanCoilAutoSize.
> >    I found that the temperature of water outlet nodes of the coils 
> > ( Objects of COIL:water:cooling)  is just as high as the coils outlet 
> > air temperature.That inconsistent with the actual situation.There 
> > should be a diference in temperature between the coil water outlet 
> > nodes and the coil air outlet nodes.
> >    Is that a characteristic of Coil:water:simple,the heat trasnfer is 
> > plentitude and temperatures of the air and water outlet nodes are very 
> > close ? 
> >    Thank you for your help. 
> > 
> > 
> > 
> > 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@...
>




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