A basic split air conditioner recirculates cool air in to the room.
for a room 35meter square with 3 ton ac. how much fresh air required
air fresheners can give a fresh scent to the entire room because vapor can diffuse into air.
N=60*fresh air/volume(room)
window draws in air from outside the room. split just cycles the air inside the room. you decide which is healthier based on your situation.
One can purchase split air conditioning systems from Royal Fresh Air, eBay, Orion Air Sales. Ductless mini-split air conditioners are a good choice and is relatively easy to install.
no it's impossible ....
Yes, in most cases it circulates the room air, but, fresh air can also be inducted.
Open it. You could also open a window in the same room to get more fresh air in.
you just open the window wide
The only benefit you have from a split A/C system is the ability to send cold air into different rooms. While the single room A/C unit will make one room a lot colder then the split system.
to keep people healthy and continuous flow of fresh air.
Some of the heat from the fire goes up the flue as hot air. This creates a draught, pulling fresh air into the room.