Hello modelling gurus,

I am modelling a restaurant space located in Canada serve by PSZ rooftop
units. I notice something weird when I increase the OA intake for the
space. Space heating energy use goes up as expected, but cooling energy
use went down a tad bit. This doesn't make sense as I'm bringing in
more hot/humid OA to the space. I've already setup dual enthalpy
economizers for the PSZ units, so I don't think it's a problem with free
cooling.

Anyone can point out what's going on?

Regards,

VICTOR YEUNG, BASc, LEED(r) AP BD+C