The working principle of the condenser is that the gas passes through a long tube (usually coiled into a solenoid), allowing the heat to be dissipated into the surrounding air. Metals such as copper have strong thermal conductivity and are often used to transport steam. In order to improve the efficiency of the condenser, a heat sink with excellent thermal conductivity is often attached to the pipeline to increase the heat dissipation area to accelerate the heat dissipation, and the air convection is accelerated through the fan to take away the heat.
The refrigeration principle of the general refrigerator is that the compressor compresses the working fluid from low temperature and low pressure gas into high temperature and high pressure gas, and then condenses into medium temperature and high pressure liquid through the condenser. After being throttled by the throttle valve, it becomes low temperature and low pressure liquid. The low-temperature and low-pressure liquid working medium is sent to the evaporator, where it absorbs heat and evaporates to become low-temperature and low-pressure steam, which is sent to the compressor again to complete the refrigeration cycle.
The single-stage vapor compression refrigeration system is composed of four basic components: a refrigeration compressor, a condenser, a throttle valve and an evaporator. They are connected in turn by pipes to form a closed system, and the refrigerant circulates continuously in the system. Flow, state changes occur, and heat is exchanged with the outside world.
In the refrigeration system, the evaporator, the condenser, the compressor and the throttle valve are the four essential parts in the refrigeration system, among which the evaporator is the equipment for conveying the cooling capacity. The refrigerant absorbs the heat of the object to be cooled in it to achieve refrigeration. The compressor is the heart and plays the role of inhaling, compressing and transporting the 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 acts as a throttling and depressurization function for the refrigerant, and at the same time controls and adjusts the amount of refrigerant liquid flowing into the evaporator, and divides the system into two parts: the high-pressure side and the low-pressure side.
In the actual refrigeration system, in addition to the above four components, there are often some auxiliary equipment, such as solenoid valves, distributors, dryers, collectors, fusible plugs, pressure controllers and other components, which are to improve the operation. for economy, reliability and safety.
