What is the function of heat exchangers in an air-cycle cooling system?

The function of heat exchangers in an air-cycle cooling system is to transfer heat away from the air. In this process, the heat exchanger operates by allowing warm cabin air to transfer its heat to a colder medium, typically air or a refrigerant, which carries the heat away from the cabin. This heat transfer process is crucial for maintaining comfortable temperatures within the aircraft, especially during flight at high altitudes, where external temperatures can be extremely cold.

Heat exchangers effectively enable the cooling system to manage the internal cabin temperature by ensuring that the hot air does not remain within the cabin, thereby contributing to overall passenger comfort. Additionally, efficient heat exchange is vital for the operation of the cooling cycle, as it helps maintain optimal temperatures for the system to function effectively.