Question 187Refrigeration/AC - Assistant Engineer70% 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 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.
Related Questions
#185 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? #186 In the multi-evaporator refrigeration system shown in the illustration, what is the proper name for the valve labeled "29"? Illustration GS-RA-12 #188 An air-cooled refrigerated container unit using R-134a as a refrigerant has a box temperature set point of -15°F, but it is currently operating with a stable return air temperature of 0°F. The fresh air makeup vent is closed, the unit is operating at 460 VAC/60 Hz, and the unit is in full capacity cool (modulating valve 100% open). Using the illustrated troubleshooting guide, what would be the normal range of expected discharge pressures if the ambient air temperature is 90°F? Illustration GS-RA-52 #189 Which of the conditions listed could cause excessively low refrigerant pressure at the compressor suction of a TXV controlled refrigeration system? #190 High suction pressure accompanied by low suction temperature to a refrigeration system compressor is caused by which of the following?