In the refrigeration cycle, what device increases the pressure of the refrigerant?

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Study for the NOCTI Heating, Ventilation, and Air Conditioning (HVAC) Test. Practice with flashcards and multiple choice questions, each question offers hints and explanations. Get ready for your exam!

Multiple Choice

In the refrigeration cycle, what device increases the pressure of the refrigerant?

Explanation:
The key idea is that moving refrigerant through the cycle requires a pressure boost. The device that increases the pressure of the refrigerant is the compressor. It takes the low-pressure vapor returning from the evaporator and does work on it, raising both its pressure and temperature so it can flow into the condenser and reject heat as a high-pressure gas. The evaporator’s job is to absorb heat at low pressure, the expansion valve drops the pressure before the refrigerant enters the evaporator, and the condenser releases heat from the high-pressure refrigerant as it cools and condenses.

The key idea is that moving refrigerant through the cycle requires a pressure boost. The device that increases the pressure of the refrigerant is the compressor. It takes the low-pressure vapor returning from the evaporator and does work on it, raising both its pressure and temperature so it can flow into the condenser and reject heat as a high-pressure gas. The evaporator’s job is to absorb heat at low pressure, the expansion valve drops the pressure before the refrigerant enters the evaporator, and the condenser releases heat from the high-pressure refrigerant as it cools and condenses.

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