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[Chemical Knowledge]：In-depth exploration of the refrigerator refrigeration principle

Read： 661 Time：13months ago Source：Transform the World with Simplicity

Freezer refrigeration is the most widely used way in modern refrigeration equipment, mainly used in cold storage, freezer, refrigerated compartment and other occasions. Its principle is based on the theory of thermodynamics and physics. Through the synergy of compression, expansion, refrigerant circulation, condenser, evaporator and other components, the temperature in the space is reduced to achieve the effect of refrigeration.

first introduces the compression expansion method. The compression and expansion process is the most critical step in the refrigeration operation of the refrigerator, and it is one of the key steps to complete the refrigeration process. Under the action of the compressor, the refrigerant changes from a low temperature, low pressure state to a high temperature, high pressure state, and then passes through the expansion valve from a high temperature, high pressure state to a low temperature, low pressure state, thereby producing a refrigeration effect.

followed by the choice of refrigerant. When the refrigerator is refrigerated, the selected refrigerant must have a high latent heat of evaporation and good stability. During operation, the refrigerant should be able to become gaseous under high pressure, and then release heat in the evaporator and return to liquid to complete the refrigeration process. Now the application of a wide range of refrigerants are ammonia, chlorofluorocarbons, R32, in order to protect the environment, in the choice of refrigerant should pay attention to environmental performance.

Next is the role of the condenser. The condenser can pass the high-temperature and high-pressure gas refrigerant through forced convection, so that the refrigerant releases the heat energy carried in the condenser. Because the condenser has a good heat dissipation effect, the refrigerant becomes liquid at this time. Maintaining the cleanliness of the condenser and adjusting the angle of the heat sink can greatly improve the condensation efficiency and improve the refrigeration efficiency of the refrigeration equipment.

finally introduces the role of the evaporator. When the refrigerator refrigerant passes through the expansion valve, it changes from a high temperature and high pressure state to a low temperature and low pressure state, and then is sent to the evaporator. In the evaporator, the refrigerant is evaporated by absorbing the heat energy in the air or substance, and the temperature of the air or substance drops accordingly, thereby achieving the effect of cooling. If the surface or inside of the evaporator is covered with ice, it should be removed in time to ensure the cooling effect and extend the service life of the evaporator. Although the principle of

freezer refrigeration is more complicated in principle, it has a very wide range of uses in practical applications and can efficiently meet people's refrigeration needs. It is hoped that through the introduction of this article, it can help readers to understand and understand the operation mechanism of refrigeration, and then have a certain reference value in the purchase or use of refrigeration equipment.

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