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Refrigeration & Air Conditioning Mechanic Red Seal · Question

When measuring the superheat of a system, what two measurements are required?

Superheat is the difference between the actual temperature of the refrigerant vapor in the suction line and its saturation temperature at the same pressure. The

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Question: When measuring the superheat of a system, what two measurements are required?

Answer options:

  • Ambient temperature and discharge temperature
  • Liquid line temperature and liquid line pressure ✅ Suction line temperature and suction line pressure
  • Evaporator inlet temperature and evaporator outlet temperature

Correct answer: Suction line temperature and suction line pressure

Explanation: Superheat is the difference between the actual temperature of the refrigerant vapor in the suction line and its saturation temperature at the same pressure. Therefore, suction line temperature and pressure are needed.

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