[EnergyPlus_Support] simple multi-objective fitness function

["artitecture82" <artitecture@xxxxxxxxx>]

Probably slightly off topic but hoping someone interested in the topic can help me if interested in the topic.

I am running with E+ a daylighting simulation to optimise the shading device of a standard office building. Im using a single zone model for simplicity and shading devices are modelled as Shading:Zone:Detailed surfaces. 

At the momento to optimise it Im running a GA which uses a fitness fucntion daylighting issues only. I wanted to keep my fitness function as simple as possible so I considered the uniformity ratio over my illumninance map grid. In this case my fitness function is F = Emax/Emin where Emax and Emin are respectivele the max and min  illuminance values  over the map grid.

Now I wanted to consider and possibly optimise my shading device according to other factors such as heating and cooling electricity demands. So I was thinking to calculate my new Objective function as MIN Zone Heating Load [J] + Zone Cooling Load [J] / Zone Load Target. This can be caclulated using the Zone,Meter,Heating:EnergyTransfer +  Zone,Meter,Cooling:EnergyTransfer  respectively. 

Do you think this approach could be reasonable?

many thanks in advance



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