Question 118Refrigeration/AC - 1st Asst/Chief70% 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 the component where flash gas formation is a normal occurrence. As the refrigerant passes through the thermostatic expansion valve, the sudden pressure drop causes a portion of the liquid refrigerant to vaporize, creating flash gas. This flash gas formation is a normal and expected phenomenon in the operation of the thermostatic expansion valve, as it helps regulate the flow of refrigerant into the evaporator coil.
The other options, A) evaporator coil, C) receiver tank, and D) condenser coil, are not the correct answers because flash gas formation is not a normal occurrence in these components of the refrigeration system.
Related Questions
#116 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? #117 What is one function of the thermal expansion valve used in a refrigeration system? #119 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? #120 Concerning the proper installation of the sensing bulb of a thermal expansion valve that is attached to the evaporator tail coil on a horizontal run, what statement is true? #121 In a refrigeration system, the bulb for the thermal expansion valve is always located where?