Question-and-Answer Resource for the Building Energy Modeling Community
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I agree with Greg. Your results don't sound unreasonable to me based on comparing an ACC to packaged DX baseline equipment. Your ACC COP seems unrealistically high though, which is contributing to the savings in cooling and heat rejection. The best full load ACC COP i have seen is about 3.5.
The negative pumping savings is because the baseline has no pumping energy, which is part of why comparing an ACC to packaged DX is difficult.
