What is the function of the metering device in a refrigeration system?

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Multiple Choice

What is the function of the metering device in a refrigeration system?

Explanation:
The metering device throttles the refrigerant flow, causing a large drop in pressure before it enters the evaporator. That pressure decrease cools the liquid and often causes some liquid to flash into vapor, which then absorbs heat in the evaporator. This flow restriction also meters how much refrigerant can enter the evaporator, helping the system match cooling demand and run efficiently. It doesn’t raise pressure (that’s the compressor’s job), it doesn’t remove moisture (that’s a dryer/filters), and the phase change from gas to liquid happens in the condenser, not at the metering device.

The metering device throttles the refrigerant flow, causing a large drop in pressure before it enters the evaporator. That pressure decrease cools the liquid and often causes some liquid to flash into vapor, which then absorbs heat in the evaporator. This flow restriction also meters how much refrigerant can enter the evaporator, helping the system match cooling demand and run efficiently. It doesn’t raise pressure (that’s the compressor’s job), it doesn’t remove moisture (that’s a dryer/filters), and the phase change from gas to liquid happens in the condenser, not at the metering device.

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