Question 45Refrigeration & AC - Assistant Engineer
70% to passCapacity control of a centrifugal refrigeration compressor can be accomplished by what means?
Avarying the position of the hot gas bypass valve
Bvarying the speed of the compressor
Cvarying the position of the suction inlet damper vanes
Dall of the above
AI Explanation
The correct answer is D) all of the above. Capacity control of a centrifugal refrigeration compressor can be accomplished by varying the position of the hot gas bypass valve, varying the speed of the compressor, or varying the position of the suction inlet damper vanes. These methods allow the compressor to adjust its output to match the cooling demand, improving efficiency and preventing issues like liquid slugging or surging. The other options are incorrect because they only describe one of the possible means of capacity control, while the correct answer recognizes that all three methods can be used to regulate the compressor's output.
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