Principles Of Operation

WARNING: This page is about a different car, the 2015 Land Rover LR2, 2014 Land Rover LR2, and 2013 Land Rover LR2. However, it is still accessible from the selected car via links, so may be relevant.

To accomplish the transfer of heat, the refrigerant is circulated around the system, where it passes through 2 pressure/temperature regimes. In each of the regimes, the refrigerant changes state during which process maximum heat absorption or dissipation occurs.

The LP/temperature regime is from the TXV, through the evaporator to the compressor. The refrigerant decreases in pressure and temperature at the TXV then changes state from a liquid to a vapor in the evaporator to absorb heat.

The HP/temperature regime is from the compressor, through the condenser and receiver drier assembly to the TXV. The refrigerant increases in pressure and temperature as it passes through the compressor, then releases heat and changes state from a vapor to a liquid in the condenser.

Operation of the A/C system is controlled by the ATC module.

For additional information, refer to: Control Components