Which of the following is a purpose of a metering device?

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Multiple Choice

Which of the following is a purpose of a metering device?

The main idea is that the metering device regulates how much refrigerant enters the evaporator by creating a controlled restriction. This throttling drops pressure and allows the high‑pressure liquid to expand and begin to evaporate as it absorbs heat from the space. By adjusting flow to match the cooling load, it prevents flooding the evaporator with liquid and also avoids starving it, helping maintain the correct superheat and protecting the compressor. Other functions—removing moisture, storing refrigerant, and filtering refrigerant—are handled by the dryer, receiver, and filter/drier, respectively, not by the metering device.

The main idea is that the metering device regulates how much refrigerant enters the evaporator by creating a controlled restriction. This throttling drops pressure and allows the high‑pressure liquid to expand and begin to evaporate as it absorbs heat from the space. By adjusting flow to match the cooling load, it prevents flooding the evaporator with liquid and also avoids starving it, helping maintain the correct superheat and protecting the compressor. Other functions—removing moisture, storing refrigerant, and filtering refrigerant—are handled by the dryer, receiver, and filter/drier, respectively, not by the metering device.

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