[EnergyPlus_Support] Re: losses in plant loop??

["tobias.leibing" <tobias.leibing@xxxxxx>]

japp, just checked the results of the simulation run with your suggested pump input, thanks!



--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, "Griffith, Brent" <brent.griffith@...> wrote:
>
> Sounds like pump heat.  To check, set the pump's rated head pressure to something approaching zero.
> 
> ________________________________
> From: EnergyPlus_Support@xxxxxxxxxxxxxxx [mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx] On Behalf Of tobias.leibing
> Sent: Tuesday, December 29, 2009 12:46 PM
> To: EnergyPlus_Support@xxxxxxxxxxxxxxx
> Subject: [EnergyPlus_Support] losses in plant loop??
> 
> 
> 
> Hey there,
> 
> I have a model with a central chiller plant serving the water cooling coils of eleven AHUs.
> 
> For an electricity breakdown I wanted to separate the total chiller electric consumption up into the cooling coils to reflect the cooling electricity demand of each AHU.
> I did this by using the ratio of total cooling energy of each coil (Total Water Cooling Coil Energy) and the total chiller cooling energy (Chiller Evap Heat Trans) and assigned this ratio to the total chiller electricity consumption (Chiller Electric Consumption).
> In doing so I discovered a deviation in the cooling energy of about 7% between the chiller cooling energy and the sum of the water cooling coils energy.
> 
> I was not able to explain this difference and was hoping somebody in this group can help me out or might have experienced the same thing as well.
> 
> Thanks,
> Tobias
>




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