QUESTION $4$A $6-$cylinder reciprocating ammonia compressor between $-10\backslash$deg C saturated suction and $30\backslash$deg C saturated condensing temperatures has a cylinder bore of $80$ mm and a stroke of $65$ mm$.$ It runs at $1850$ rev$/$min$,$ has a refrigerating capacity of $90$ kW and a clearance of $5\%.$ The drive power is measured at $35$ kW$.$ Assuming a standard cycle, calculate:$4\mathrm{.}1$ the compressor displacement $(2)4\mathrm{.}2$ the clearance volumetric efficiency $(2)4\mathrm{.}3$ the actual volumetric efficiency, and $(12)4\mathrm{.}4$ the compressor efficiency. $(3)$Thermodynamic properties of Ammonia is given in the Appendix. Do not use any other Table$($s$)$ and Chart$($s$).$