Question 187Refrigeration & AC - Assistant Engineer

The correct answer is C) 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 conditions in that particular refrigerated space, ensuring the proper amount of refrigerant is supplied for efficient cooling. The other options are incorrect because: A) The king valve is used to control the main flow of refrigerant, not the individual metering to each evaporator. B) Back pressure regulating valves are used to maintain a desired pressure, not to meter the refrigerant flow. D) Box solenoid valves are used to turn the refrigerant flow on and off, not to meter the flow.