What are the important components of the screw chiller refrigeration system

What are the important components of the screw chiller refrigeration system

Screw chillers have a wide range of applications, mainly in industrial applications, such as cooling in production lines of chemicals, plastics, electroplating, medicine, food additives, and other production processes where chilled water is required. Today, professional chiller manufacturers will introduce the six components of screw compressor, condenser, evaporator, liquid storage tank, drier filter, and expansion valve that are indispensable in the daily operation of screw chillers.

　　1. Screw compressor: Screw compressor is the main equipment in the refrigeration device of screw chiller unit. The role of the screw compressor is to absorb refrigerant vapor from the evaporator to ensure a certain evaporation pressure in the evaporator, increase the pressure, and compress the low-pressure and low-temperature refrigerant vapor into high-pressure and high-temperature superheated vapor to create a higher temperature The conditions of condensation transport and push the refrigerant to flow in the system to complete the refrigeration cycle.

　　2. Condenser: In the refrigeration process, the condenser plays a role in outputting heat energy and condensing the refrigerant. After the high-pressure superheated vapor discharged from the screw compressor enters the condenser, all the heat absorbed during the working process, including the heat absorbed from the evaporator and refrigeration compressor and in the pipeline, is transferred to the surrounding medium to take away; The high-pressure superheated vapor of the refrigerant recondenses into a liquid.

　　3. Evaporator: The evaporator is a heat exchange device that relies on the evaporation of refrigerant liquid to absorb the heat of the cooled medium. Its function in the refrigeration system is to absorb heat. In order to ensure that the evaporation process can be carried out stably and lastingly, a screw compressor must be used to continuously pump the evaporated gas away to maintain a certain evaporation pressure.

　　4. Liquid reservoir: The liquid reservoir is installed after the condenser, and it is directly connected with the condenser's drain pipe. The refrigerant liquid of the condenser should flow into the receiver unimpededly, so that the cooling area of the condenser can be fully utilized. On the other hand, when the thermal load of the evaporator changes, the required amount of refrigerant liquid also changes, and the accumulator plays a role of regulating and storing refrigerant.

5. Dry filter: The professional chiller manufacturer stated that it is necessary to prevent the entry of moisture and dirt in the refrigeration cycle of the screw chiller. If the moisture in the system is not removed, when the refrigerant passes through the throttle valve, the pressure and temperature Sometimes the moisture will solidify into ice, blocking the passage and affecting the normal operation of the refrigeration device. Therefore, a filter drier must be installed in the chiller refrigeration system.

6. Thermal expansion valve: In the chiller refrigeration system, the thermal expansion valve is both a flow regulating valve and a throttle valve in refrigeration equipment. It is installed between the filter dryer and the evaporator in the refrigeration equipment. The bulb is wrapped at the outlet of the evaporator. The main function is to throttle and depressurize the high-pressure and normal-temperature refrigerant liquid when it flows through the thermal expansion valve, turning into low-temperature and low-pressure refrigerant wet vapor into the evaporator, vaporizing and absorbing heat in the evaporator, so as to achieve the purpose of cooling and cooling.