Home » Mechanical Engineering » Compressors, Gas Dynamics and Gas Turbines

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 / Context
Clearance volume traps residual compressed air which re-expands during suction.

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

Reasoning
Larger 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.

More Questions from Compressors, Gas Dynamics and Gas Turbines

Discussion & Comments