Two chiller types in proposed model

[adrian_t]

Hi,

I'm trying to model my proposed system with two chillers having different COPs. One serves the building and the other serves the IT rooms.

Unfortunately I'm getting 50% increase in space heating energy use after modeling the IT rooms with the afferent high internal loads. I've cloned my existing proposed system via edit-system-ApacheHVAC import function, modified my new chiller's COP and set the rooms in the multiplex accordingly.

But the results doesn't make sense to me, since I'm adding extra high heat loads in the building, paradoxically the heating consumption increases instead of decreasing. The space cooling en. use seem to increase as expected though.

Thanks for the support!