The Basic Refrigeration Working Principle of Cold Storage

Refrigeration Principle of Cold Storage:
After the liquid refrigerant absorbs the heat of the cooled object in the evaporator, it vaporizes into low - temperature and low - pressure steam.

Then it is sucked into the compressor, compressed into high - pressure and high - temperature steam, and then discharged into the condenser. In the condenser, it releases heat to the cooling medium (water or air) and condenses into a high - pressure liquid. After being throttled by the throttle valve to a low - pressure and low - temperature refrigerant, it enters the evaporator again to absorb heat and vaporize, achieving the purpose of cyclic refrigeration.
In this way, the refrigerant completes a refrigeration cycle through four basic processes in the system: evaporation, compression, condensation, and throttling.
In the cold - storage refrigeration system, the evaporator, condenser, cold - storage compressor, and throttle valve are the four essential components in the refrigeration system. Among them, the evaporator is the device for delivering cold. The refrigerant absorbs the heat of the cooled object in the evaporator to achieve refrigeration.
The compressor is the heart, playing the role of sucking in, compressing, and transporting refrigerant vapor.
The condenser is the device for releasing heat, transferring the heat absorbed in the evaporator together with the heat converted from the work of the compressor to the cooling medium to be carried away.
The throttle valve throttles and reduces the pressure of the refrigerant. At the same time, it controls and adjusts the amount of refrigerant liquid flowing into the evaporator and divides the system into two major parts: the high - pressure side and the low - pressure side.
In an actual cold - storage refrigeration system, in addition to the above four components, there are also some auxiliary devices, such as solenoid valves, distributors, dryers, heat collectors, fusible plugs, pressure controllers, etc.

These components are set up to improve the economy, reliability, and safety of operation.
A single - stage steam cold - storage compression refrigeration system is composed of four basic components: a refrigeration compressor, a condenser, an evaporator, and a throttle valve.

They are connected in sequence by pipelines to form a closed system. The refrigerant continuously circulates in the system, changes its state, and exchanges heat with the outside.