Aircraft engines use ________ for cooling engines.
Aircraft engines use an air-cooled system for cooling engines.
Air-cycle Systems for Aircraft Refrigeration
When a supply of compressed air is available, it can be used to power a gas refrigeration system. The most common example of this application is the open-cycle air-conditioning system used in aircraft.
The gas refrigeration system is essentially a reverse Brayton cycle.
An airplane moving at high speed can bleed air from the engines at high pressure and divert this flow into a compressor.
The air leaving from the compressor is at a high temperature and pressure.
In context to air refrigeration DART or Dry Air, Rated Temperature is the temperature in terms which is used to compare the different types of refrigeration systems of an aircraft.
Heat is removed from the air in a high-temperature heat exchanger, and the cooler air then flows through a turbine.
The function of the turbine is to reduce the air temperature and help power the compressor. Cool air from the turbine is then directed into the airplane cabin.