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Freezing cycle and refrigerant
Chapter 6. Freezing cycle and refrigerant
6-1. Freezing cycle (Freezing principle/Refrigerant gas circulation diagram)
6-1-1. Freezing principle
Freezing is an operation of maintaining a lower temperature (generally 0°C) than the natural temperature (usually ambient
temperature surrounding us). This requires an insulated space, refrigerant (R134a) to absorb the heat and the circulation
circuit (compressor, condenser, evaporator etc.) to operate the phase change of the refrigerant.
6-1-2. Refrigerant gas circulation diagram
1. Compressor
2. Wire condenser
8
7
2-1. Hot line pipe
3. Drier
4. 3-way valve
5. Capillary tube (left)
6. Capillary tube (right)
7. Evaporator (left)
8. Evaporator (right)
5
9. Suction pipe
10. Cooling fan
6
4
2
-1
10
3
9
2
1
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