Question 17Refrigeration/AC - Assistant Engineer70% to pass
Moisture entering a typical refrigeration system will most likely produce what effect?
AI Explanation
The correct answer is C) freeze in the expansion valve.
When moisture enters a refrigeration system, it can freeze in the expansion valve, which is a critical component responsible for controlling the flow of refrigerant and maintaining the proper pressure differential between the high-pressure and low-pressure sides of the system. The expansion valve is designed to regulate the flow of refrigerant, and when moisture is present, it can freeze and block the valve, disrupting the proper operation of the refrigeration system.
The other options are incorrect because: A) sweating and frost on the evaporator coils is a symptom of the moisture freezing in the expansion valve, not the direct cause; B) the moisture would not boil in the condenser, as the condenser operates at a higher pressure and temperature; and D) the liquid line strainers are designed to remove debris, not necessarily moisture, from the system.
Related Questions
#15 Zinc plates commonly found in refrigeration systems and used as sacrificial anodes are located where? #16 Vapor bubbles present in the liquid upon arrival to the thermal expansion valve in a refrigeration system may cause erosion of the expansion valve's needle and seat. This, in turn, could cause what condition? #18 A small obstruction at the thermostatic expansion valve inlet will result in which of the following conditions? #19 An obstructed expansion valve may be indicated by an incompletely cooled evaporator and what other symptom? #20 Which of the following conditions will occur if the power element of the thermostatic expansion valve shown in the illustration loses its charge? Illustration GS-RA-07