Question

While discussing the operation of air-conditioning systems: Technician A says that in order for the refrigerant to release heat, it must be at a low temperature and pressure. Technician B says that in order for the refrigerant to absorb heat, it must be at a high temperature and pressure. Who is correct?

1) Technician A
2) Technician B
3) Both Technicians
4) Neither Technician

Answer 1

Neither Technician A nor Technician B is correct. A refrigerant in an air conditioner or refrigerator absorbs heat at low temperature and low pressure and releases it at high temperature and high pressure.

Step-by-step explanation:

Technician A states that in order for the refrigerant to release heat, it must be at a low temperature and pressure. However, this is incorrect as the refrigerant releases heat when it is at a high temperature and pressure, typically in the condenser unit of the system. On the other hand, Technician B states that in order for the refrigerant to absorb heat, it must be at a high temperature and pressure, which is also incorrect. The refrigerant absorbs heat when it is at a low temperature and low pressure, usually in the evaporator section of the system.

Therefore, the correct answer to the question of which technician is correct is option 4) Neither Technician. The understanding of heat transfer in air conditioners and refrigerators is that the heat is absorbed by the refrigerant in the evaporator at a low temperature and pressure, and this heat is then released at a higher temperature and pressure in the condenser.