Speaking of the principle of the condenser, which first […]
Speaking of the principle of the condenser, which first understand the concept of the condenser, in the distillation process, the steam into liquid device is called the condenser.
For the refrigeration principle of most condensers: the role of the compressor is to compress the lower pressure steam into the higher pressure steam, so as to reduce the volume of steam and increase the pressure.
The compressor inhales the working medium steam with lower pressure from the evaporator, which is sent to the condenser after the pressure is increased. The liquid with higher pressure is condensed in the condenser. After throttling by the throttle valve, it becomes the liquid with lower pressure, and then it is sent to the evaporator to absorb heat and evaporate in the evaporator to become steam with lower pressure, thus completing the refrigeration cycle.
1. Basic principle of refrigeration system
After absorbing the heat of the cooled object in the evaporator, the liquid refrigerant vaporizes into low-temperature and low-pressure steam, is inhaled by 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), condenses into high-pressure liquid, throttles to low-pressure and low-temperature refrigerant, and enters the evaporator again to absorb heat and vaporize, so as to achieve circulation The purpose of refrigeration. In this way, the refrigerant in the system through evaporation, compression, condensation, throttling four basic processes to complete a refrigeration cycle.
In the refrigeration system, the evaporator, condenser, compressor and throttle valve are the four essential parts in the refrigeration system, in which the evaporator is the equipment to transport the cooling capacity. The refrigerant absorbs the heat of the object to be cooled to realize refrigeration. Compressor is the heart, plays the role of inhalation, compression and transportation of refrigerant vapor. The condenser is a device to release heat, which transfers the heat absorbed by the evaporator together with the heat transformed by the compressor work to the cooling medium. The throttle valve has the function of throttling and depressurizing the refrigerant, controlling and regulating the amount of refrigerant liquid flowing into the evaporator at the same time. The system is divided into two parts: high pressure side and low pressure side. In practical refrigeration system, in addition to the above four parts, there are often some auxiliary equipment, such as solenoid valve, distributor, dryer, collector, fusible plug, pressure controller and other components, which are set to improve the economy, reliability and safety of operation.
2. Principle of vapor compression refrigeration
The single-stage vapor compression refrigeration system is composed of four basic components: refrigeration compressor, condenser, evaporator and throttle valve. They are connected by pipes in turn to form a closed system. The refrigerant circulates continuously in the system, changes its state and exchanges heat with the outside world.