Cogeneration 1- Steam is generated in the boiler of a cogeneration plant at 4 MPa and 427°C at a rate of 8 kg/s. The plant is to produce power while meeting the process steam requirements for a certain industrial application. One-third of the steam leaving the boiler is throttled to a pressure of 0.8 MPa and is routed to the process heater. The rest of the steam is expanded in an isentropic turbine to a pressure of 0.8 MPa and is also routed to the process heater. Steam leaves the process heater at 116°C. Neglecting the pump work, determine (a) the net power produced (b) the rate of process heat supply (c) the utilization factor of this plant.
Cogeneration 1- Steam is generated in the boiler of a cogeneration plant at 4 MPa and 427°C at a rate of 8 kg/s. The plant is to produce power while meeting the process steam requirements for a certain industrial application. One-third of the steam leaving the boiler is throttled to a pressure of 0.8 MPa and is routed to the process heater. The rest of the steam is expanded in an isentropic turbine to a pressure of 0.8 MPa and is also routed to the process heater. Steam leaves the process heater at 116°C. Neglecting the pump work, determine (a) the net power produced (b) the rate of process heat supply (c) the utilization factor of this plant.
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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Transcribed Image Text:Cogeneration
1- Steam is generated in the boiler of a cogeneration plant at 4 MPa and
427°C at a rate of 8 kg/s. The plant is to produce power while meeting the
process steam requirements for a certain industrial application. One-third of
the steam leaving the boiler is throttled to a pressure of 0.8 MPa and is
routed to the process heater. The rest of the steam is expanded in an
isentropic turbine to a pressure of 0.8 MPa and is also routed to the process
heater. Steam leaves the process heater at 116°C. Neglecting the pump work,
determine
(a) the net power produced
(b) the rate of process heat supply
(c) the utilization factor of this plant.
Answers: (a) 2260 kW, (b) 20528.91 kW
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