BOX TYPE HIGHLY ROTARY CONDENSING UNIT is named as screw chiller because its key component - compressor adopts screw type. The state of the unit coming out of the evaporator is a gas refrigerant; after adiabatic compression by the compressor, it becomes a high temperature and high pressure state. The compressed gas refrigerant is cooled and condensed by isobaric cooling in the condenser, and then transformed into a liquid refrigerant after condensing, and then expanded to a low pressure through a throttle valve to become a gas-liquid mixture. Among them, the liquid refrigerant at low temperature and low pressure absorbs the heat of the cooled material in the evaporator and turns into 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. It is also the main working principle of BOX TYPE HIGHLY ROTARY CONDENSING UNIT.
Maintenance of BOX TYPE HIGHLY ROTARY CONDENSING UNIT
In order to ensure the effective work of the condenser, its outer layer must be free of any fallen leaves, lint, insects, slag shells and other pollutants. If the condenser needs to be cleaned, the compressed air should be blown parallel to the aluminum heat sink from the inside to the outside. This direction is the exact opposite of the normal air flow direction. When doing external cleaning, you can use a vacuum cleaner, do not damage the aluminum fins.
Plate Heat Exchanger
If you want to determine whether the shell and tube heat exchanger is clean, please check the water temperature at the water inlet and outlet of the heat exchanger and compare it with the saturated evaporation temperature. For a heat exchanger that works effectively, the water temperature at the water outlet is 5-7 degrees higher than the saturated evaporation temperature of the refrigerant. If the temperature difference exceeds this value range, it indicates that the working efficiency of the heat exchanger is reduced. Since certain chemical treatments are required in the cleaning process, cleaning must be done by professionals.
Antifreeze for BOX TYPE HIGHLY ROTARY CONDENSING UNIT
The drain valve on the shell and tube heat exchanger of BOX TYPE HIGHLY ROTARY CONDENSING UNIT has been installed with a drain valve. When the unit is not in use for a long time when the ambient temperature is lower than 0 degrees, the water in the shell exchange must be drained through this valve, otherwise The water system of the unit will be damaged by freezing; if the unit needs to run when the ambient temperature is lower than 0 degrees, please power on the unit so that the unit can automatically enter antifreeze operation when needed.