[EnergyPlus_Support] Re: Window AC or Unitary - Coil:DX:CoolingBypassFactorEmpirical

["ooikoonbeng2004" <kooi@xxxxxxxxxxxxxxxx>]

There are three autosizable objects in the 
CoolingBypassFactorEmpirical, i.e. the Rated Total Cooling Capacity 
(gross) in W, the SHR (which has another option of 0.5 to 1) and 
Rated Air Volume Flow Rate in m3/sec.

Firstly, my question is that if it is 'Rated' then it would not 
be 'sizeable'? To the best of my knowledge, 'Rated' means given a 
rating, for example, rated at 4KW. During the actual operation the 
capacity is normally below the rated value. 

If it is autosized, then the sized results should be available an 
output variable. But none of the three are in the .rdd file. 

Still elementary to E+,
ooi
 

--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, Don Shirey <shirey@...> 
wrote:
>
> Both the Window AC and the Unitary System objects use the DX 
cooling 
> coil object Coil:DX:CoolingBypassFactorEmpirical.  This cooling 
coil 
> object is probably what you will need to use.... cooling only, 
single stage.
> 
> Probably easiest for you to use the Window AC example.  In 
EnergyPlus, 
> the Window AC object is a piece of zone equipment that is 
relatively 
> easy to define (see example file WindACAuto.idf).  For the Unitary 
> System object, you need to define an air loop which means 
additional 
> inputs that are probably not needed for what you are doing.
> 
> Don
> 
> ooikoonbeng2004 wrote:
> 
> >i have been asked to verify (and validate?) E+ simulation results 
by 
> >taking actual measurements with anemometer (for air flow rates), 
> >temperature sensors, maybe including RH sensors, if available, in 
a 
> >room air conditioned, cooling only, by a York or Carrier split 
> >(evaporator inside the room and air cooled condensor outside the 
room) 
> >air conditioner and a ELE weather station in a tropical climate. 
> >
> >i plan to do this from 16th to 20th April this year. There is a 
Window 
> >AC example and a Unitary equipment class. Which one is more 
> >appropriate to this split type of airconditioner? Any advice from 
> >developers in this typer of work would be most welcomed. Many 
Thanks.
> >  
> >
>




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