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Re: [EnergyPlus_Support] Chiller operating hours



Hi, refer to the example files that come with Eplus installation. There are examples of "Little chiller" and "Big chiller" working together and how their availability is scheduled. Also a little bit of fiddling with programming with EMS seems to make such tasks easier. There is an excel file in the examples folder that describes which idf file you have to refer to for your specific needs. Give it a go. Cherrs.

On 14/02/2015 5:42 AM, "Jim Dirkes jim@xxxxxxxxxxxxxxxxxxxxxxxxxxx [EnergyPlus_Support]" <EnergyPlus_Support@xxxxxxxxxxxxxxx> wrote:
 

Marcos,
If you are autosizing the chillers, all 6 of them will be autosized at 100% of needed capacity.  This means that only one chiller can meet the entire load.
You might try setting the Chiller Sizing Factor = .17 for each chiller.

On Fri, Feb 13, 2015 at 3:10 AM, marcusbrown1326@xxxxxxxxx [EnergyPlus_Support] <EnergyPlus_Support@xxxxxxxxxxxxxxx> wrote:
 

Hi all,


I'm modelling an office building which has 6 chillers for the chilled water loop. Therefore, I have set up 6 HVACTemplate:Plant:Chiller and 1 HVACTemplate:Plant:ChilledWaterLoop . But the problem I'm finding is that only 1 chiller appears to be working and the rest of them just remain off all the time. 


What I'm aiming to do is to control the hours of operation of every chiller manually and independently (by means of schedules or any other similar method) but I can't find the way to do so. For instance, turning ON all 6 chillers during peak load periods and turn them OFF during winter.


I would really appreciate if anyone could give me a hint to solve this problem or just reference me to any example or case where they might have experienced this or a similar issue.


Thanks so much!


Marcos





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