For the ideal cogeneration cycle shown in Fig. 8.42, steam leaves the boiler at 6 MPa and

Question:

For the ideal cogeneration cycle shown in Fig. 8.42, steam leaves the boiler at 6 MPa and 600°C with a mass flux of 40 kg/s. The valve is equipped with a pressure regulator that removes 20% of the steam flow and sends it to the process heater at 800 kPa. The remaining 80% of the steam travels to the turbine where 30% of this flow is removed from the turbine at 800 kPa and is also sent to the process heater. The remaining steam is reheated back to 600°C at 800 kPa. Fifty percent of the steam that leaves the turbine at 50 kPa is used for heating and cooling buildings. S ketch this process on a T-s diagram and determine:
i) The rate of heat addition in the steam generator
ii) The power output of the turbine
iii) The rate of heat removal in the process heater
iv) The heat rate used to heat and cool
v) The utilization factor for the cycle
Figure 8.42