The push-pull liquid recovery method is used to recover vapor refrigerant. In this method, vapor refrigerant is pulled from the system.
To answer the question:
- The correct answer is A. liquid receiver.
- The liquid receiver stores the liquid refrigerant, not vapor. So, the vapor refrigerant cannot be pulled from the liquid receiver.
- The compressor compresses the refrigerant gas, not pull vapor refrigerant.
- The recovery cylinder is used to collect and store the recovered refrigerant, not pull vapor refrigerant.
- The evaporator is where the refrigerant absorbs heat and evaporates, not where vapor refrigerant is pulled.
Therefore, in this context, the correct answer is A. liquid receiver.
