Question 179Refrigeration/AC - Assistant Engineer70% 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 D) thermostatic expansion valve.
The thermostatic expansion valve is the component where flash gas formation is a normal occurrence. As the refrigerant passes through the thermostatic expansion valve, the pressure drop causes a portion of the liquid refrigerant to vaporize, creating flash gas. This flash gas is an important part of the refrigeration cycle, as it helps to ensure that only vapor enters the compressor, preventing liquid refrigerant from damaging the compressor.
The other components listed (evaporator coil, condenser coil, and receiver tank) are not where flash gas formation normally occurs in the refrigeration system.
Related Questions
#177 In a vapor compression type refrigeration cycle, the refrigerant temperature decreases the most when passing through which system component? #178 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? #180 The thermostatic expansion valve in a refrigeration system further opens when the diaphragm flexes downward. With all other conditions being the same, what single condition causes this? #181 A typical shipboard domestic multi-box refrigeration system operates with one compressor and condenser. What is the purpose of the sensing line connected to the thermal bulb at the evaporator coil outlet? #182 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