Capillary aluminum tubes, also known as refrigerator capillary tubes, are throttling elements used in refrigeration systems such as refrigerators and freezers. Generally, they are pure aluminum tubes, alloy aluminum tubes, and other special aluminum tubes with an outer diameter of 0.5mm~10mm and an inner diameter of 0.3mm~9.8mm. In refrigeration systems, capillary tubes are usually located between the condenser and evaporator, serving to throttle and reduce the pressure of the refrigerant.
Based on experience, the capillary tube length of a typical household refrigerator/freezer is 2.2-2.5 meters, while the capillary tube length of a freezer with a capacity of 300 liters or more is generally 3-3.5 meters. Aluminum has good ductility, thermal conductivity, light weight, and good machinability, which can meet various processing requirements for replacing copper in refrigeration systems.
