=+15-4.

20 psia (138 kPa) and 20 F (-7 C), but leaves the evaporator saturated at 0.5 F (-18 C). The vapor is discharged from the cylinder at 180 psia (1.24 MPa). Compute the volumetric effi-

ciency for

(a) a clearance factor of 0.03, and

(b) a clearance factor of 0.15.

(c) Compare the mass flow rates for parts

(a) and (b), and

(d) compare the power input to the compressor in parts

(a) and (b)

Consider a four-cylinder. 3 in. bore by 4 in. stroke, 800 rpm, single-acting compressor for use