Question 131Refrigeration/AC - 1st Asst/Chief70% to pass
When a refrigeration compressor is in the 'off' cycle, the thermal expansion valve will react in what way?
AI Explanation
The correct answer is D) it will continue to function as a result of the net balance of forces acting on the diaphragm.
When the refrigeration compressor is in the 'off' cycle, the thermal expansion valve will continue to function based on the net balance of forces acting on its diaphragm. The thermal expansion valve regulates the flow of refrigerant into the evaporator based on the superheat in the system. Even with the compressor off, the thermal expansion valve will still respond to changes in superheat and maintain the appropriate refrigerant flow.
The other options are incorrect because: A) the thermal expansion valve does not always completely close, B) it does not always open wide, and C) its position is not static but rather responds to changes in the system.
Related Questions
#129 Refrigerant flow through a thermostatic expansion valve is greatest under what conditions? #130 In refrigeration systems with multiple evaporators, the metering of refrigerant to each refrigerated space evaporator is accomplished by what device? #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 #134 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?