Question 57Refrigeration/AC - QMED70% to pass
Through which of the components shown in the illustration is flash gas formation a normal occurrence? Illustration GS-RA-25
AI Explanation
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.
Related Questions
#55 When the sensing bulb of a thermostatic expansion valve is charged with a fluid different from the charge used in the system, what name of the charge is associated with the power element? #56 Besides the evaporator pressure, the thermal expansion valve reacts directly to changes in what parameter? #58 In refrigeration systems with multiple evaporators, the metering of refrigerant to each refrigerated space evaporator is accomplished by what device? #59 Rather than design an infinite variety of thermostatic expansion valve sizes to accommodate different capacities for heat removal, some manufacturers use a few standard valve body sizes in conjunction with what other feature? #60 Which of the following illustrated expansion valves is designed to maintain a constant evaporator pressure rather than a constant evaporator superheat? Illustration GS-RA-24