Question 177Refrigeration/AC - Assistant Engineer70% to pass
In a vapor compression type refrigeration cycle, the refrigerant temperature decreases the most when passing through which system component?
AI Explanation
The correct answer is C) expansion valve.
In a vapor compression refrigeration cycle, the refrigerant temperature decreases the most when passing through the expansion valve. As the refrigerant flows through the expansion valve, it undergoes a sudden drop in pressure, resulting in a rapid decrease in its temperature. This temperature decrease is due to the Joule-Thomson effect, where the expansion of the refrigerant causes it to cool.
The other options are incorrect because the evaporator, compressor, and condenser receiver do not cause the same dramatic decrease in refrigerant temperature as the expansion valve.
Related Questions
#175 What is one function of the thermal expansion valve used in a refrigeration system? #176 Which of the following illustrated thermal expansion valves would be appropriate to use on an evaporator coil with a 2 psi pressure drop, where externally adjustable superheat and a replaceable power element are both desired? Illustration GS-RA-06 #178 When the sensing bulb of a thermostatic expansion valve is charged with a fluid different from the charge used in the system, what name of the charge is associated with the power element? #179 Through which of the components shown in the illustration is flash gas formation a normal occurrence? Illustration GS-RA-25 #180 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?