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Clearance volume and volumetric efficiency in compressors: validate the statement for design practice. Statement to evaluate: Clearance volume is kept as small as possible because it adversely affects volumetric efficiency. Choose whether the statement is correct.

Difficulty: Easy

Agree
Disagree
True only at very high speeds
False; clearance improves efficiency

Correct Answer: Agree

Explanation:

Given / ContextClearance volume traps residual compressed air which re-expands during suction.

Concept/ApproachResidual air reduces the fresh charge admitted each stroke, lowering volumetric efficiency (η_v).

ReasoningLarger clearance → more re-expansion → less fresh intake → lower η_v. Hence designers minimize clearance consistent with mechanical needs.

Clearance volume and volumetric efficiency in compressors: validate the statement for design practice. Statement to evaluate: Clearance volume is kept as small as possible because it adversely affects volumetric efficiency. Choose whether the statement is correct.

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