The purpose of the throttling device in a refrigeration system is to:

The purpose of the throttling device in a refrigeration system is to control refrigerant flow. Throttling devices, such as expansion valves or capillary tubes, play a crucial role in regulating the amount of refrigerant that enters the evaporator. By controlling this flow, the throttling device ensures that the refrigerant undergoes a pressure drop, which is vital for the cooling process.

As the refrigerant passes through the throttling device, it expands and absorbs heat from the surrounding environment within the evaporator, leading to the cooling effect desired in refrigeration systems. This precise control over flow helps optimize system efficiency and performance. The other functions mentioned, such as increasing pressure or temperature, do not align with the primary role of the throttling device, which is fundamentally about regulating flow to ensure efficient operation of the system.