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Re: [EnergyPlus_Support] Chiller:Electric- Sizing Factor value less than 1


Rajeev,
I did not look at the file you reference, however I think this is the rationale:
* When more than one chiller is present in a chilled water plant AND 
* you autosize the chillers AND 
* the sizing factor is blank or 1.0, 
* E+ assigned 100% of the peak load to EACH chiller
If you have two chillers and want each to serve 50% of the load, you should set the sizing factor = 0.5
Similarly, if there are 3 chillers, you might set the sizing factor = 0.4
p.s., this is also true for boilers
On Sun, Jul 3, 2016 at 6:49 PM, <mailto:rajeevkamal@xxxxxxxxx>rajeevkamal@xxxxxxxxx [EnergyPlus_Support] <<mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx>EnergyPlus_Support@xxxxxxxxxxxxxxx> wrote:
>  
> I wanted to understand the use of sizing factor for mechanical equipment in a specific case. 

> For cooling and heating a range of 1 and more make sense to overcome unexpected demands. 

> 
> 
> However, on review of the idf RefBldgLargeOfficeNew2004_v1.4_8.5_5A_USA_IL_CHICAGO-OHARE.idf, The sizing factors used for chillers are set to 0.4. 

> In what situation is this a good idea for sizing the chillers?

> 
> 
> Regards

> Rajeev

>  

> 




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