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The Working Principle of the Condenser

The principle of the compressor is to compress the steam with lower pressure into the steam with higher pressure, so as to reduce the volume of steam and increase the pressure.


Principle of Steam Compression Condenser


To understand the condenser working principle, first you need to know that the single-stage vapor compression refrigeration system is composed of four basic components: a refrigeration compressor, a condenser, an evaporator and a throttle valve. They are connected in turn with pipes to form a closed system. The refrigerant circulates continuously in the system, changes its state, and exchanges heat with the outside world.

After the liquid refrigerant absorbs the heat of the object being cooled in the evaporator, it is vaporized into low-temperature and low-pressure steam, sucked by the compressor, compressed into high-pressure and high-temperature steam, and discharged into the condenser. In the condenser, heat is released to the cooling medium (water or air), condensed into high-pressure liquid, throttled to low-pressure and low-temperature refrigerant by throttle valve, and then enters the evaporator again to absorb heat and vaporize, so as to achieve the purpose of cycle refrigeration. In this way, the refrigerant in the system completes a refrigeration cycle through four basic processes of evaporation, compression, condensation, and throttling.

In the refrigeration system, the evaporator, condenser, compressor and throttle valve are the four essential parts in the refrigeration system. Among them, the evaporator is the equipment that transports cold energy. The refrigerant absorbs the heat of the object to be cooled to achieve cooling. The compressor is the heart, which plays the role of inhaling, compressing and transporting refrigerant vapor. The condenser is a device that emits heat, and transfers the heat absorbed in the evaporator together with the heat converted by the compressor work to the cooling medium to take away. The throttle valve has the effect of throttling and reducing the pressure of the refrigerant, while controlling and regulating the amount of refrigerant liquid flowing into the evaporator. It divides the system into two parts: high pressure side and low-pressure side. In the actual refrigeration system, in addition to the above four major parts, there are often some auxiliary equipment, such as solenoid valves, distributors, dryers, heat collectors, fusible plugs, pressure controllers and other components, which are set to improve the economy, reliability and safety of operation.

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