Hi,
Attempting to model heat recovery chillers, but unfortunately for some reason using the chiller heater component as suggested above did not work, there was absolutely nothing happening on the heat recovery side.
The chiller heater module has often given me fits in the past, and I know it can be used for a variety of things like ASHPs, but I often use alternative components when I can because of these difficulties. So after tearing out my hair a bit on using it for the heat recovery chillers, I found this alternative approach that looked promising, as : Modeling Heat Recovery Chiller in EnergyPlus using Heat Exchanger - Unmet Hours
The article has this nifty sketch explaining the concept:
However, the issue is connecting the chiller to both the condenser loop and the heat recovery loop. I anticipated an issue trying to draw two wires coming out of the chiller ‘ToCondensor’, with one wire going to the Condenser Water Loop and one to supply the Heat Recovery Water Loop, like so:
and the chiller no longer appear in Open Studio on the Chilled Water Loop (Because the supply is on the Heat Recovery Water Loop now even though the supply wire is attached to the CHW loop)
I have tried various configurations of heat exchangers and loop configurations, but all seem to cause issues because of a mismatch between traditional supply and demand side functions. Wondering if this is inherent to Ironbug or if there is some other OS/E+ reason that these cannot be flipped.
Also any alternative ideas are appreciated.