Question 123Refrigeration & AC - Assistant Engineer

The correct answer is C) collect in the condenser. The accumulation of air and other non-condensable gases in a refrigeration system causes them to collect in the condenser. This is because the condenser is the component where the refrigerant vapor is cooled and condensed back into a liquid. The non-condensable gases, being less dense than the refrigerant vapor, will rise to the top of the condenser, reducing the condenser's efficiency and causing the system to operate at higher pressures. The other answer choices are incorrect because: A) a loss of the liquid seal is not directly caused by non-condensable gas accumulation, B) foaming of the oil is more likely caused by refrigerant migration, and D) a vapor lock in the liquid receiver is not a typical consequence of non-condensable gas buildup.