discharges it at 500 kPa through a 100 mm-diameter outlet at 100 m/s. Determine the minimum power required to drive the insulated compressor. Assume atmospheric conditions of

A nozzle operates with steam entering at 700 kPa and 300 °C. The velocity at the inlet is 30 m/s. As the steam flows through the nozzle, the pressure decreases. Determine the area ratio value (Area / Area inlet), where Area inlet is the cross sectional area of the nozzle at the inlet, at the sections of the nozzle where the pressure values are 650, 550, 450, 350, and 250 kPa. Assume nozzle operates isentropically.

The feed to a compressor is superheated steam at 310°C and 40 bar. It enters the compressor at a velocity of 17 m/s. The pipe inlet inside diameter is 0.25 m. The discharging pipe, after the compressor, has a smaller inside diameter and the discharge velocity is 120 m/s. The exit of the compressor is superheated steam at 350°C and 85 bar absolute. Heat loss from the compressor to the surroundings is 3 kW. Determine the compressor horsepower

A site is being considered for wind power generation. At this site, the wind blows steadily at 9 m/s for 2,579 hours per year. Assuming the wind velocity is negligible at other times for simplicity, determine the kWh/year that can be produced at the site for a turbine with a mechanical efficiency of 100% and an effective flow area of 5 m2. Use a value of 1.25 kg/m3 for the density of the air. Give your answer in killowatt-hours per year (kWh/year). Hint: I reccomend starting by finding the kinetic energy (kJ/kg) of the wind. Hint 2: Multiply the power generation (kW) by the number of hours of wind per year (h/year) to get kWh/year.