A single acting, two stage, reciprocating compressor receives air at 100 KPa and air capacity of 0.05 m3/sec and delivered at 400 KPa. The clearance volume is taken to be 8 %. The compression and expansion process is isentropic with compressor mean piston speed of 150 meter/min. Assuming that each piston has the same amount of stroke. no pressure drops at the suction and discharge ports of the compressor and perfect intercooling, determine: a) The piston diameter in centimeters b) The total power required in Kilowatts c) The heat loss at the intercooler in Kilowatts

Superheated steam at 40 bar absolute and 500°C flows at a rate of 250 kg/min to an adiabaticturbine, where it expands to 5 bar. The turbine develops 1500 kW. From the turbine thesteam flows to a heater, where it is reheated isobarically to its initial temperature. Neglectkinetic energy changes.(a) Write an energy balance on the turbine and use it to determine the outlet streamtemperature.(b) Write an energy balance on the heater and use it to determine the required input (kW) tothe steam.(c) Verify that an overall energy balance on the two-unit process is satisfied.(d) Suppose the turbine inlet and outlet pipes both have diameters of 0.5 meter. Show that itis reasonable to neglect the change in kinetic energy for this unit.

For air properties use online source: https://www.peacesoftware.de/einigewerte/luft_e.html  The compressor is operating at steady-state increasing pressure of R-22 refrigerant from 4 bars to 14 bars. Temperature was rising during the process from 12C to 90C. The inlet volumetric flow rate is 1 m3/min and inlet diameter is 0.03m. At the exit the diameter is the same. Heat flow to the surroundings can be neglected. Determine: a.Mass flow rate [kg/s]   SHOW AND EXPLAIN ALL STEPS PLEASE thanks