Application range of screw chiller

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

    The screw compressor of the screw chiller is the most important equipment in the refrigeration device of the screw chiller. 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. 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.

    The screw chiller 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.

    The liquid reservoir of the screw chiller is installed after the condenser, and it is directly connected with the drain pipe of the condenser. The refrigerant liquid of the condenser should flow into the liquid reservoir unimpededly, so that the cooling area of the condenser can be fully utilized. On the other hand, when the heat load of the evaporator changes, the required amount of refrigerant liquid also changes, and the accumulator plays a role of regulating and storing refrigerant. Professional chiller manufacturers stated that it is necessary to prevent the entry of moisture and dirt in the refrigeration cycle of screw chillers. If the moisture in the system is not removed, when the refrigerant passes through the throttle valve, the moisture will sometimes freeze due to the drop in pressure and temperature. Ice formation will block the passage and affect the normal operation of the refrigeration device. Therefore, a filter drier must be installed in the chiller refrigeration system. The thermal expansion valve in the chiller refrigeration system is not only a flow control valve, but also a throttle valve in the refrigeration equipment. It is installed between the dryer filter and the evaporator in the refrigeration equipment. Its temperature sensing bag is wrapped in the evaporator. At the exit of the device. 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.