Question-and-Answer Resource for the Building Energy Modeling Community
 | 1 | initial version |
When I model free cooling on the plant / condensor loop, I do it in the following way:
Attach one heatExchanger:FluidtoFluid for each chiller, all chillers and heat exchangers are modelled parallel in both the condensor loop and chiller loop. In the heatExchanger:FluidtoFluid object it asks which component you are overriding, put in chiller nodes here. The control for the free cooling is also in the heatExchanger:FluidtoFluid object it is under "Control Type", there are a multitude of different options in here. If you look at the input output reference guide in your E+ folder it will describe what each of these does. I have attached the inputs for a heatExchanger:FluidtoFluid that I modelled recently (this was in energyPlus but it should be the same for OS)
