A single-stage, single-acting reciprocating compressor delivers 15 m/min of free air from 1 bar to 8 bar at 300 rpm. The clearance volume is 6% of the stroke volume, and compression and expan- sion follow the law p/1.3 = constant. Calculate the diameter and stroke of the compressor. Take L = 1.5 D. The temperature and pressure of air at suction are the same as atmospheric air.