Question

One operating advantage of fixed restriction metering devices over expansion valves is _________.

1) They are less expensive
2) They provide better control of refrigerant flow
3) They require less maintenance
4) They are more energy efficient

Answer 1

Fixed restriction metering devices provide better control of refrigerant flow compared to expansion valves.

Step-by-step explanation:

One operating advantage of fixed restriction metering devices over expansion valves is that they provide better control of refrigerant flow. Fixed restriction metering devices, such as capillary tubes or fixed orifice expansion devices, regulate the flow of refrigerant by restricting its passage through a small opening. This allows for a more precise and steady flow rate, resulting in better control over the cooling process. On the other hand, expansion valves, while more flexible in terms of adjusting refrigerant flow, may not provide as precise and consistent control as fixed restriction metering devices.