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Is the refrigeration system of the Water-cooled screw chiller?
1, compressor 2, condenser: the condenser plays a function of output thermal energy and causes refrigerant to condense during refrigeration. After the high-voltage superheated vapor discharged from the refrigeration compressor enters the condenser, the total amount of heat is absorbed in the working process, including the heat from the evaporator and the refrigeration compressor and the heat absorbed in the conduit (water or Air) take away; refrigerant high pressure superheated vapor re-condenses into liquid. (Different in the cooling medium and cooling mode, the condenser can be divided into three categories: water-cooled condenser, air-cooled condenser, evaporative condenser.)
3, reservoir: After the reservoir is mounted after the condenser, the drain tube of the condenser is in direct communication. The refrigerant liquid of the condenser should be unimpeded to flow into the reservoir so that the cooling area of the condenser can be sufficiently utilized. On the other hand, when the heat load of the evaporator changes, the need for the refrigerant liquid varies, at that time, the reservoir function acts as a tuning and storage of the refrigerant. For small chiller refrigeration unit systems, there is often no storage liquid, but use a condenser to adjust and store the refrigerant.
4, dry filter: must prevent water and dirt (oil, iron), etc. in Water-cooled screw chiller, etc., the source of moisture is mainly the newly added refrigerant and lubricating oil contained in micro water, Or because of the moisture brought by air when the system is inspected. If the moisture in the system is not excluded, when the refrigerant passes through a throttle (thermal expansion valve or capillary), the water branch is solidified as ice due to the decrease in pressure and temperature, so that the channel obstruction affects the normal operation of the refrigeration device. Therefore, a dry filter must be installed in the chiller refrigeration system.
5, thermal expansion valve: thermal expansion valve is both traffic control valves in the Water-cooled screw chiller refrigeration system, and is a throttle valve in a refrigeration device, which is mounted between the refrigeration device between the drying filter and the evaporator, its feelings The warm bag is the exit of the evaporator. Its main role is to make the refrigerant liquid in high pressure normal temperature flow in the throttle, become low-temperature low-pressure refrigerant wet vapor (large portal is liquid, the small sector is steam) into the evaporator, vaporizing in the evaporator The purpose of heat-cooling and reaching cooling.
6. Evaporator: The evaporator is a heat exchange device that relies on the evaporation of the refrigerant liquid (actually boiling) to absorb the heat exchanger of the cooling medium. It is the function in the refrigeration system to absorb heat (or output cold). In order to ensure that the evaporation process can be done, it is necessary to continue to remove the evaporated gas with a refrigeration compressor to maintain a certain evaporation pressure.
7. Refrigerant: Most industrial Water-cooled screw chillers used in modern industries use R22 or R12 as a refrigerant. Refrigerant is the activity of the activity in the refrigeration system. Its main role is to carry heat and achieve heat absorption and exotherm when the state changes.