Refrigerant-134a enters a compressor at 100 kpa and –24°c with a flow rate of 1.3 m3/min and leaves at 800 kpa and 60°c. determine the mass flow rate of r-134a and the power input to the compressor. use data from the steam tables.

Aturning operation is performed with following conditions: rake angle of 12°, a feed of 0.35 mm/rev, and a depth of cut of 1.1 mm. the work piece is aluminum alloy 6061 with t6 heat treatment (a16061-t6). the resultant chip thickness was measured to be 1.0 mm. estimate the cutting force, fc. use shear stress of 207 mpa and coefficient of friction on the tool face of 0.6.