Question 130Refrigeration/AC - 1st Asst/Chief70% to pass
In refrigeration systems with multiple evaporators, the metering of refrigerant to each refrigerated space evaporator is accomplished by what device?
AI Explanation
The correct answer is D) the individual thermal expansion valves.
In refrigeration systems with multiple evaporators, the metering of refrigerant to each refrigerated space evaporator is accomplished by individual thermal expansion valves. These valves automatically regulate the flow of refrigerant to each evaporator based on the temperature and pressure within that specific refrigerated space, ensuring proper superheat and efficient cooling.
The other options are incorrect because: A) back pressure regulating valves control the pressure at the outlet of the evaporator, not the metering of refrigerant; B) the king valve is used to isolate the entire refrigeration system, not individual evaporators; and C) box solenoid valves are used to on/off control the refrigerant flow, not to meter it.
Related Questions
#128 Constant superheat is maintained at the evaporator coil outlet of a refrigeration system or unit by the action of what device? #129 Refrigerant flow through a thermostatic expansion valve is greatest under what conditions? #131 When a refrigeration compressor is in the 'off' cycle, the thermal expansion valve will react in what way? #132 In a refrigeration system, the pressure within the power element of a thermostatic expansion valve depends directly upon what factor? #133 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