Or if you must blow towers against the building, better make sure you have the best chemical treatment guy in town!
Towers at my plant are below grade and blow up through grates just like in your pics. But there's no white chalky residue on the grates or anywhere else. Other towers in town I've seen do just like in your photos. I have the best water treatment guy in town...good water treatment pays in so many ways!
Electricity makes refrigeration happen.
Refrigeration makes the HVAC psychrometric process happen.
HVAC pyschrometrics is what makes indoor human comfort happen...IF the ducts AND the building envelope cooperate.
A building is NOT beautiful unless it is also comfortable.