Question 123Refrigeration/AC - Assistant Engineer70% to pass
What is true concerning the accumulation of air and other non-condensable gases in a refrigeration system?
AI Explanation
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.
Related Questions
#121 Which of the following statements describes the accepted method for testing a thermostatic expansion valve? #122 When a thermostatic expansion valve is installed in a refrigerated container unit, the sensing bulb almost always requires insulation. Why is this so? #124 Charging liquid HCFC-123 into a system under a deep vacuum could cause what to happen unless necessary precautions are taken? #125 Which of the following statements is correct concerning the testing of an R-22 refrigeration system for leaks in an enclosed compartment with a halide torch? #126 When using nitrogen to pressure leak test a system, the nitrogen cylinder should always be equipped with what device or feature?