ho expands in a piston cylinder assembly from an initial pressure and
Air is expanded isothermally through a reversible but thermally uninsulated turbine. Inlet conditions are 2.5 MPa and 200°C. If the exit pressure is 0.2 MPa, determine the turbine work unit mass of air by assuming ideal gas and constant specific heats. Present your answer in kJ/kg using 5 significant figures.per An isentropic air compressor is to be considered to compress air from an inlet pressure of 8 kPa to an exit pressure of 60 kPa, with a constant mass flow rate of 10 kg/sec. If the inlet temperature is20°C, and the air has c - 1.0052 kJ/(kg-°K) throughout the compressor, equivalent to a constant specific heat ratio of 1.40, determine the magnitude of the power required for the compression.Present your answer in kW using 5 significant figures. A fixed mass of water is compressed through a reversible isothermal process from a pressure and temperature of 4 MPa and 400°C to a final pressure of 8 MPa. Determine the work transfer per unit mass during the process. Present your answer in kJ/kg using 5 significant figures. H;O expands in a piston-cylinder assembly from an initial pressure and temperature of 10 MPa and 360°C to a final pressure of 2 MPa. If the process is adiabatic and reversible, determine the work transfer per unit mass during the process. Present your answer in kJ/kg using 5 significant figures.
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