Question-and-Answer Resource for the Building Energy Modeling Community
 | 1 | initial version |
This a somewhat boneheaded way to do what you want, which may also be the only solution.
You can't put the CHP on two plant loops. Energyplus won't allow it. If you wanted a CHP to provide hot water to two water plant loops, what you can do is make a plantloop containing the CHP on the supply side, and two water heaters on the demand side. Then you can insert those two water heaters into other plant loops since WaterHeater:Mixed objects have a pair of Use Side nodes and a pair of Source Side nodes. This lets you place one water heater on two plant loops.
Hopefully both your supply objects have something similar to the Use Side and Source Side nodes of the WaterHeater:Mixed. Otherwise, you'll probably need to add in at least one more WaterHeater:Mixed object into your model that is solely for transferring heat from the CHP to a plant loop.
I've had to do something similar in the past, and this is the best I came up with.
PLEASE let me know if you come up with a more elegant solution.
