Question 57Refrigeration & AC - QMED

The correct answer is B) thermostatic expansion valve. The thermostatic expansion valve is a component where flash gas formation is a normal occurrence. As the refrigerant passes through the thermostatic expansion valve, the sudden pressure drop causes some of the liquid refrigerant to vaporize, forming flash gas. This is a necessary part of the refrigeration cycle, as the flash gas is then drawn into the evaporator coil where it absorbs heat and completes the cooling process. The other options, such as the receiver tank, evaporator coil, and condenser coil, are not where flash gas formation would normally occur in the refrigeration system.