At which phase is the refrigerant upon leaving the evaporator?

At which phase is the refrigerant upon leaving the evaporator?

• A. Low-pressure, low-temperature vapor
• B. High-pressure, high-temperature vapor
• C. Medium-pressure, medium-temperature liquid
• D. High-pressure, low-temperature liquid

Answer: (A)

When refrigerant exits the evaporator, it is in a low-pressure, low-temperature vapor state. In the evaporator, the refrigerant absorbs heat from the space to be cooled, causing it to evaporate and change from a liquid to a vapor. This process takes place at a low pressure, as the evaporator is designed to allow the refrigerant to absorb heat efficiently. The low-pressure environment is essential for the refrigerant to evaporate at the lower temperatures typically found in refrigeration systems. Therefore, the state of the refrigerant as it leaves the evaporator is characterized by both low pressure and low temperature, making it a vapor. This allows the refrigerant to then move to the compressor, where it is pressurized and eventually cycled through the system to continue the refrigeration process.

When refrigerant exits the evaporator, it is in a low-pressure, low-temperature vapor state. In the evaporator, the refrigerant absorbs heat from the space to be cooled, causing it to evaporate and change from a liquid to a vapor. This process takes place at a low pressure, as the evaporator is designed to allow the refrigerant to absorb heat efficiently. The low-pressure environment is essential for the refrigerant to evaporate at the lower temperatures typically found in refrigeration systems. Therefore, the state of the refrigerant as it leaves the evaporator is characterized by both low pressure and low temperature, making it a vapor. This allows the refrigerant to then move to the compressor, where it is pressurized and eventually cycled through the system to continue the refrigeration process.