ekspansioonventiili

Ekspansioonventiili, also known as an expansion valve, is a key component in refrigeration and air conditioning systems. Its primary function is to control the flow of refrigerant into the evaporator. This control is crucial for maintaining the desired temperature within the cooled space and ensuring the efficient operation of the entire system.

The expansion valve works by sensing the temperature and pressure of the refrigerant leaving the evaporator. Based on these readings, it adjusts the amount of liquid refrigerant that is allowed to enter. If the evaporator is too warm, the valve opens further to allow more refrigerant to flow, increasing the cooling capacity. Conversely, if the evaporator is too cold, the valve restricts the refrigerant flow to prevent overcooling and potential damage to the system.

There are several types of expansion valves, including thermostatic expansion valves (TEVs) and electronic expansion valves (EEVs). TEVs use a sensing bulb filled with a volatile fluid to detect evaporator temperature, while EEVs utilize electronic sensors and actuators for more precise control. The choice of expansion valve depends on the specific application and desired level of performance. Proper functioning of the expansion valve is essential for achieving optimal energy efficiency and longevity of refrigeration and air conditioning equipment.