Heating and Air Conditioning

Air Conditioning System - Schematic Layout:

1. Compressor
2. Condenser
3. Receiver/drier
4. Thermostatic expansion valve
5. Evaporator
6. Capillary tube
7. Dual pressure switch
8. Cooling fans to maintain air flow
9. Compressor high pressure relief value
10. Sight glass - refrigerant
11. Drying agent - receiver/drier
12. Blower motor
A1 Ambient air flow through condenser
A2 Ambient air flow through fan and evaporator
A3 Cooled air flow to vehicle interior
F1 High pressure high temperature refrigerant vapor
F2 High pressure slightly subcooled refrigerant liquid
F3 High pressure slightly subcooled refrigerant liquid with moisture, vapor bubbles and foreign matter removed.
F4 Low pressure low temperature mixed liquid and vapor
F5 low pressure slightly superheated refrigerant vapor