Application range of rotary compressors: flow rate and pressure level Rotary (positive-displacement or dynamic) compressors are typically selected to deliver which combination of flow and pressure? Choose the best description.
Mechanical Engineering
Compressors, Gas Dynamics and Gas Turbines
Difficulty: Easy
Choose an option
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ASmall quantities of air at high pressures
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BLarge quantities of air at high pressures
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CSmall quantities of air at low pressures
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DLarge quantities of air at low pressures
Answer
Correct Answer: Large quantities of air at low pressures
Explanation
Concept/ApproachRotary machines (roots, screw, centrifugal, axial) are well suited for large flow rates. In typical single-stage practice, they achieve moderate to low pressures compared with multistage reciprocating compressors used for very high pressures.
Final AnswerLarge quantities of air at low pressures