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2. Consider a cogeneration system that uses an ideal Rankine cycle as shown in the figure to generate power and steam for process heating. Steam is supplied to the inlet of a two-stage turbine with a mass flow rate of 1.0 x 10^6 kg/h at 8 MPa and 480°C. A portion of the steam is extracted after exiting the high pressure turbine at 1 MPa and is used to meet the process heating load of 9.5 x 10^8 kJ/h. Liquid water returns from the process heating load at 0.95 MPa and 120°C, and it mixes with liquid exiting the low-pressure pump at 0.95 MPa. Saturated liquid water enters the low-pressure pump at 8 kPa. a. Sketch this cycle on a T-s diagram. b. Determine the mass flow rate of water extracted for process heating, in kg/h. c. Determine the power developed by the turbines, in kW. d. Determine the power input to the pumps, in kW. e. Determine the rate of heat transfer to the water in the steam generator, in kW. f. Determine the net power output of the system, in kW.

          2. Consider a cogeneration system that uses an ideal Rankine cycle as shown in the figure to generate power and steam for process heating. Steam is supplied to the inlet of a two-stage turbine with a mass flow rate of 1.0 x 10^6 kg/h at 8 MPa and 480°C. A portion of the steam is extracted after exiting the high pressure turbine at 1 MPa and is used to meet the process heating load of 9.5 x 10^8 kJ/h. Liquid water returns from the process heating load at 0.95 MPa and 120°C, and it mixes with liquid exiting the low-pressure pump at 0.95 MPa. Saturated liquid water enters the low-pressure pump at 8 kPa.
a. Sketch this cycle on a T-s diagram.
b. Determine the mass flow rate of water extracted for process heating, in kg/h.
c. Determine the power developed by the turbines, in kW.
d. Determine the power input to the pumps, in kW.
e. Determine the rate of heat transfer to the water in the steam generator, in kW.
f. Determine the net power output of the system, in kW.

2. Consider a cogeneration system that uses an ideal Rankine cycle as shown in the figure to generate power and steam for process heating. Steam is supplied to the inlet of a two-stage turbine with a mass flow rate of 1.0 x 10^6 kg/h at 8 MPa and 480°C. A portion of the steam is extracted after exiting the high pressure turbine at 1 MPa and is used to meet the process heating load of 9.5 x 10^8 kJ/h. Liquid water returns from the process heating load at 0.95 MPa and 120°C, and it mixes with liquid exiting the low-pressure pump at 0.95 MPa. Saturated liquid water enters the low-pressure pump at 8 kPa.
a. Sketch this cycle on a T-s diagram.
b. Determine the mass flow rate of water extracted for process heating, in kg/h.
c. Determine the power developed by the turbines, in kW.
d. Determine the power input to the pumps, in kW.
e. Determine the rate of heat transfer to the water in the steam generator, in kW.
f. Determine the net power output of the system, in kW.

Added by Domingo M.

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