Poor heat dissipation of screw chiller and its treatment

Poor heat dissipation of screw chiller and its treatment

Poor heat dissipation of screw chillers and treatment methods: When the condenser heat dissipation is poor, the compressor efficiency is low, and the operating current is increased. When the air-cooled high pressure pressure rises to 24kg/cm2, the water-cooled high pressure pressure rises to 20kg/cm2, the compressor Protected by the high pressure switch and tripped, the compressor stops running, poor heat dissipation, high pressure overload and fault code or fault indication is displayed. At this time, please check whether the circulating water of the cooling tower is normal, whether the cooling water temperature is too high, whether the cooling tower fan pump is running, and the cooling water Whether the valve is fully opened (please check whether the radiator is dirty or blocked for air-cooled type), press the reset button after the above is normal, or shut down and restart to operate normally.

　　If high pressure overload occurs frequently, please arrange to clean the condenser as soon as possible.

　　The gas refrigerant in the state from the evaporator of the screw chiller unit becomes a high temperature and high pressure state after adiabatic compression by the compressor. The compressed gas refrigerant is cooled and condensed at equal pressure in the condenser. After condensation, it changes into a liquid refrigerant, and then expands to a low pressure through a throttle valve to become a gas-liquid mixture. Among them, the liquid refrigerant under low temperature and low pressure absorbs the heat of the substance to be cooled in the evaporator and becomes a gaseous refrigerant again. The gaseous refrigerant re-enters the compressor through the pipeline to start a new cycle. These are the four processes of the refrigeration cycle and the main working principle of the screw chiller.

　　1. The compressor of the screw chiller adopts international brands, a new type of high-efficiency screw rotary sub-compressor, which is 20%-30% more efficient than ordinary compressors, and has obtained IS9001 international certification quality from many European and American patents.

　　 2. High efficiency 5:6 patented asymmetric rotor tooth profile.

　　 3. The capacity control can adopt four-stage (100%-75%-50%-25%) or three-stage (100-66%-33%) and stepless control system.

　　Four. Using 11 bearings and a-type axial thrust balance combination design, greatly increasing the bearing life 2.5-3.5 times.

　　5. The special groove design of high-efficiency silicon steel sheet is adopted, and the internal and external omnidirectional design cooling flow is equipped, so that the compressor motor can exert the highest efficiency under any load.