– The boilers at Purdue’s Wade Utility Plant
produce steam at 600 psig (~4.2 MPa)
SP18 – The boilers at Purdue’s Wade Utility Plant produce steam at 600 psig (~4.2 MPa)
825 F (~440°C). After partial expansion through the turbine generator, steam at 15 psig (~205
kPa) and 350 F (~175°C) and at 125 psig (~960 kPa) and 530 F (~275°C) is bled off and routed to campus for heating and processing.
Assume that one of the boilers feeds one of the turbines 120,000 lb/hr of steam. This is about 15 kg/s. Also assume that 15% of the ~4 MPa/440°C flow is bled off to the ~1000 kPa/~280°C line and an additional 10% is bled off to the ~200 kPa/~160°C line. The remaining 75% exits the turbine at a pressure of 0.1 bar and a quality of 90%.
What is the turbine power rate? Report your answer in MW.