what i have learned this week

Past week in Globalia we were doing Module 11 ATA 29 Air Conditioning System.
In this week we have learned a lot of things related with ventilation and pressurization, one of the things that i found more interesting is how do we get the air for air conditioning.
There are two types of aircrafts, the ones that are not pressurized and the ones that are pressurized.

 Non pressurized

















Pressurized


In a not pressurized aircraft we get the air conditioning air from ram air and its heated with exhaust gases from engines, nevertheless in a pressurized aircraft we do the opposite, we get the air from the compressors, but it has a disadvantage, the air from compressors is to hot, so we have to cool it down by mixing it with ram air, so we can get the optimum temperature.