If you had a flooded evaporator, which type of metering device would you use?

In the scenario of a flooded evaporator, using a low side float as the metering device is an effective choice due to its design and function. A flooded evaporator typically indicates that there is an excess of refrigerant in the evaporator, which can hinder efficient heat transfer and overall system performance.

The low side float operates by controlling the level of refrigerant inside the evaporator. It senses the level of liquid refrigerant and modulates the flow to maintain the appropriate level, preventing both flooding and starvation. By regulating the refrigerant flow based on the liquid level, a low side float ensures that the evaporator remains adequately filled without overflowing, promoting optimal heat exchange and maintaining system efficiency.

In contrast, other devices like a high side float or thermostatic expansion valve may not address the specific needs of a flooded evaporator. The high side float is designed to control refrigerant flow on the high-pressure side, which is not relevant to managing an issue characterized primarily by liquid refrigerant in the evaporator. Similarly, thermostatic expansion valves regulate flow based on temperature rather than liquid level, making them less effective in preventing an excess of refrigerant in the evaporator under flooding conditions.

Overall, the low side float is specifically suited to maintain the