Dear all

Now I'm doing a LEED-CS energy simulation, part of the project is
residential type and I use system 1(PTAC), and the proposed is FCU+DOAs. The
results shows that the baseline is consume less energy.

So the question is: Does PTAC consumes less energy than FCU+DOAs?

Of course I'm not sure whether I has modeled the PTAC correctly. So I put
some important images below. The cooling source is DX and the heat source is
hot water loop. The supply fan is 0.0003Kw/CFM, and I keep the EIR default
of 0.438 which is a low efficiency.

Could anyone tell me the cause or the mistake I've made? Thanks a lot!

Yours Zhiren Zhou