What kind of expansion valve should be used for industrial chiller selection

What kind of expansion valve should be used for industrial chiller selection

1. When industrial chiller manufacturers produce air-cooled or water-cooled chillers, they generally use external balance thermal expansion valves when selecting thermal expansion valves.

　　2. Because the industrial chiller is a kind of refrigeration equipment that circulates and cools water and related liquid media, it needs a thermal expansion valve to detect the outlet pressure of the evaporator during the refrigeration cycle in order to more accurately control the refrigerant flow in the refrigeration system.

3. The principle of the externally balanced expansion valve is basically the same as that of the internally balanced expansion valve. The difference is that under the diaphragm of the internally balanced expansion valve, the evaporator inlet pressure is felt; while under the diaphragm of the externally balanced expansion valve, evaporation is felt. The outlet pressure of the device.

4. There is another important reason. Internally balanced expansion valves are generally used in occasions with relatively small cooling capacity, such as household air conditioners, and other small refrigeration equipment, while industrial chillers generally have relatively large cooling capacity, so it is more necessary The externally balanced expansion valve is used as a throttle control element.