Water-cooled screw chillers also belong to chillers, because their main components use screw compressors, so the name can be called water-cooled screw chillers. Widely used in plastics, electroplating, electronics, chemical, pharmaceutical, printing, food processing and other industrial refrigeration process using chilled water, or large shopping malls, hotels, factories, hospitals and other areas requiring central air conditioning projects. Use chilled water to cool the area centrally.
Unit refrigeration, the compressor will send the low temperature and low pressure refrigerant in the evaporator into the cylinder, through the compressor work, the refrigerant vapor compressed into high temperature and high pressure gas.
It enters the condenser through the exhaust pipe. The high-temperature and high-pressure refrigerant gas is exchanged with cooling water in the condenser, and the heat is transferred to the cooling water to take away, while the refrigerant gas is condensed into high-pressure liquid. The high pressure liquid from the condenser enters the evaporator by throttling the thermal expansion valve. In the evaporator, the low-pressure liquid refrigerant absorbs the heat from the chilled water and makes the chilled water vaporize and cool to become the required low temperature water. The vaporized refrigerant gas is re-absorbed by the compressor and discharged into the condenser for repeated circulation, thus cooling the chilled water.
Water Cooled Screw Chiller
The chilled water flowing out from the unit enters the indoor fan coil, variable air volume air conditioner and other terminal equipment for heat exchange with convective air indoors, in which the temperature of water rises due to absorbing heat from indoor air (heat to indoor air), and the indoor air temperature drops through the indoor heat exchanger, driven by the fan, and enters the room, thus lowering the indoor air temperature, while the chilled water in the pump after the temperature rises re After the temperature rises, the chilled water in the pump enters the unit again, and so on, so as to achieve the purpose of continuous cooling.
(1)The compressor of the unit is semi-hermetic screw compressor and electric control components, equipped with heat exchanger and high-efficiency high-quality copper tube condenser and evaporator.
(2) Equipped with all kinds of safety devices, stable performance, low noise, long life, simple operation; LCD human-machine interface, simple and convenient operation, clear operation at a glance.
(3) Models have a single compressor or multi-compressor combination of refrigeration system. The compressor can be automatically turned on and run according to the change of load, balancing the running hours of the compressor to achieve the effect of saving energy and extending the service life of the chiller. Easy energy regulation and more energy in the load section.
(4) Open structure, beautiful appearance of the machine, simple structure, can check the operation of the unit at any time, easy installation and maintenance.
System composition: water-cooled screw chiller is mainly composed of semi-closed screw compressor, shell and tube condenser, dry filter, thermal expansion valve, shell and tube evaporator, electrical control part, etc.
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