Question: A double acting, single cylinder, reciprocating air compressor has a piston displacement of (0.014 mathrm{~m}^{3}) per revolution, operates at (600 mathrm{rpm}) and has a (4

A double acting, single cylinder, reciprocating air compressor has a piston displacement of $0.014 \mathrm{~m}^{3}$ per revolution, operates at $600 \mathrm{rpm}$ and has a $4 \%$ clearance. The air is received at 1 bar and delivered at 8 bars. The compression and expansion are polytropic with $n=1.3$. Determine: (i) the volumetric efficiency, (ii) the power required, and (iii) the heat transferred and its direction during compression if inlet temperature of the air is $293 \mathrm{~K}$.

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