⭐ Merited by mikeywith (4)
If noise is a problem for the outside, how about heat? You'll be emitting 175 + 60 = 235 kW.
On average there is 30kw worth of heat reaching from the sun for every 1 square meter on earthQuote from: Solar irradiance - Wikipedia
The average annual solar radiation arriving at the top of the Earth's atmosphere is about 1361 W/m2.
On the surface of the earth, it's less. Depending on your location and time of day, most of the time it will be much less. So 235 kW is really a lot.Quote
Even with the normal setup of using only airflow, you would need to stand right in front of the exhaust fans to feel the heat, standing near the other sides or even leaning against the wall won't be enough to notice the heat, probably a little warmer to set next right next to the building during winter, but nothing much.
Compare the 20 patio heaters 
Quote
Furthermore, the building is isolated
That solves all worries 
I was thinking of a small building in a crowded city.Quote
the building reaches up to 110 db, that's as loud as a subway train
That's hearing damage level.Quote
We are now considering two plans:
1- Build a second wall to reduce the noise (this will make cooling more difficult but probably cheaper than plan B)
Does the noise come through the walls of the building, or does it reach the outside through the airco system? Or both?1- Build a second wall to reduce the noise (this will make cooling more difficult but probably cheaper than plan B)