The information below refers to a reciprocating air compressor.

Cylinder diameter: $210$ mm

Stroke: $315$ mm

Speed: $670\frac{r}{m}in.$

Clearance volume $=4,5\%$ of the swept volume and polytropic index for compression and expansion $=1,31.$

Intake conditions $=93$kPa and $18C.$

Outlet pressure $=570$kPa.

Free air conditions are $101,3$kPa and $15C.$

The compressor is a single$-$stage, single$-$acting type. R for air $=0,286k\frac{J}{k}g.K.$

a$)$ Calculate the volume of free air delivered per minute $.)$

b$)$ Calculate the mass of free air delivered per minute $.)$

c$)$ Calculate the volumetric efficiency referred to free air conditions

$(79,06\%)$

d$)$ Calculate the air delivery temperature

$(446,7$ K$)$

e$)$ Calculate the power required to drive the compressor.

$(22,18kW)$The information below refers to a reciprocating air compressor.

Cylinder diameter: $210$ mm

Stroke: $315$ mm

Speed: $670\frac{r}{m}in.$

Clearance volume $=4,5\%$ of the swept volume and polytropic index for compression and expansion $=1,31.$

Intake conditions $=93$kPa and $18C.$

Outlet pressure $=570$kPa.

Free air conditions are $101,3$kPa and $15C.$

The compressor is a single$-$stage, single$-$acting type. R for air $=0,286k\frac{J}{k}g.K.$

a$)$ Calculate the volume of free air delivered per minute $.)$

b$)$ Calculate the mass of free air delivered per minute $.)$

c$)$ Calculate the volumetric efficiency referred to free air conditions

$(79,06\%)$

d$)$ Calculate the air delivery temperature

$(446,7$ K$)$

e$)$ Calculate the power required to drive the compressor.

$(22,18kW)$