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Introduction to the working principle of the refrigeration unit!

   Analysis of the working principle of the refrigeration unit: The two-stage refrigeration cycle is developed on the basis of the single-stage refrigeration cycle. Its compression process is carried out in two stages. The refrigerant vapor from the evaporator first enters the low-pressure stage cylinder and is compressed to the intermediate pressure. After the intermediate cooling, it enters the high-pressure cylinder, compresses to the condensing pressure and enters the condenser. Generally, when the evaporation temperature is between -25°C and -50°C, a two-stage compressor should be used for refrigeration. The Chlord mechanical refrigeration unit system consists of an evaporator, a two-stage compressor, an oil separator, a condenser, an intercooler, an ammonia storage device, an ammonia liquid separator, a throttle valve and other auxiliary equipment, etc., which pass through the pipes. Connected into a closed system. Among them, the intercooler uses a small amount of liquid refrigerant to vaporize and absorb heat at an intermediate pressure to cool the superheated steam discharged from the low-pressure stage, reduce the suction temperature of the high-pressure stage, and at the same time cool the high-pressure liquid refrigerant.

   Single-stage refrigeration units are a type of refrigerator with a wide range of applications, which can be used in ice making, air conditioning, food refrigeration and industrial production processes. The single-stage refrigeration cycle refers to the four processes of compression, condensation, throttling, and evaporation of the refrigerant in the refrigeration system to complete the cycle of the single-stage refrigeration machine, which achieves the purpose of refrigeration.

   The refrigeration unit is composed of an evaporator, a single-stage compressor, an oil separator, a condenser, an ammonia storage device, an ammonia liquid separator, a throttle valve and other auxiliary equipment, which are connected to each other through a pipe to form a closed system. Among them, the evaporator is a device that transports cold energy. After the liquid refrigerant evaporates, it absorbs the heat of the object to be cooled to achieve refrigeration; the compressor is the heart of the system and plays the role of inhaling, compressing, and transporting refrigerant vapor; the oil separator is used for sedimentation Separate the oil in the compressed refrigerant vapor; the Kolord Precision Machine condenser condenses the high-temperature refrigerant vapor discharged from the compressor into a saturated liquid; the ammonia storage device is used to store the refrigerant ammonia condensed in the condenser and adjust the condenser The relationship between the supply and demand of the refrigerant ammonia liquid between the evaporator and the evaporator; the ammonia liquid separator is an important accessory equipment in the ammonia gravity liquid supply system; the throttle valve throttles and reduces the pressure of the refrigerant while controlling and regulating the refrigeration flowing into the evaporator The flow rate of the agent liquid is divided into two parts: the high-pressure side and the low-pressure side.

   Operation principle of evaporative condenser

   The high-temperature gaseous refrigerant entering the condensing coil exchanges heat with water and air sprayed from the outside of the coil through the wall of the coil. The temperature of the refrigerant gas decreases as the time in the tube increases, and gradually changes from gas to liquid. With the super strong wind of the fan, the spray water can fully cover the outer surface of the coil, thereby improving the heat exchange efficiency. After spraying water and air absorb the heat from the coil wall, the temperature rises, and part of the water turns from liquid to gas, taking away a large amount of heat on the pipe wall. The moisture in the hot and humid air is intercepted by the water baffle and introduced into the PVC heat exchange layer , The hot air is discharged. The water in the PVC heat exchange layer is cooled by the fresh air flowing through, the temperature is lowered, and it flows into the water collection tank, and then is sent to the spray system by the water pump to continue to circulate. The water lost to the air is automatically adjusted and supplemented by the water level control device.