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(b) The temperature rise of the cooling water from the river in the condenser (c) The mass flow rate of steam through the process heater (d) The rate of heat supply from the process heater (e) The rate of heat transfer to the steam in the boiler

(b) The temperature rise of the cooling water from the river in the condenser (c) The mass flow rate of steam through the process heater (d) The rate of heat supply from the process heater (e) The rate of heat transfer to the steam in the boiler

Elements Of Electromagnetics
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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Q1) Consider a cogeneration power plant modified with regeneration. Steam enters the turbine at 6 MPa and 450 °C at a rate of 60 kg/s and expands to a pressure of 0.4 MPa. At this pressure, 20% of the steam is extracted from the turbine, and the remainder expands to a pressure of 10 kPa. Part of the extracted steam is used to heat feedwater in an open feedwater heater. The rest of the extracted steam is used for process heating and leaves the process heater as a saturated liquid at 0.4 MPa. It is subsequently mixed with the feedwater leaving the feedwater heater, and the mixture is pumped to the boiler pressure. The steam in the condenser is cooled and condensed by the cooling water from a nearby river, which enters the adiabatic condenser at a rate of 600 kg/s. The enthalpies of all respective points of the system are given below. 6. Turbine hi = 191.81 hz = 192.20 hz = h4 = hạ = 604.66 hs = 610.73 he = 3302.9 h, = hg = h10 = 2665.6 h1=2128.8 %3D Boiler 10 Process heater Condenser PI fwh H PI Determine; (a) The total power output of the turbine (b) The temperature rise of the cooling water from the river in the condenser (c) The mass flow rate of steam through the process heater (d) The rate of heat supply from the process heater (e) The rate of heat transfer to the steam in the boiler
Transcribed Image Text:Q1) Consider a cogeneration power plant modified with regeneration. Steam enters the turbine at 6 MPa and 450 °C at a rate of 60 kg/s and expands to a pressure of 0.4 MPa. At this pressure, 20% of the steam is extracted from the turbine, and the remainder expands to a pressure of 10 kPa. Part of the extracted steam is used to heat feedwater in an open feedwater heater. The rest of the extracted steam is used for process heating and leaves the process heater as a saturated liquid at 0.4 MPa. It is subsequently mixed with the feedwater leaving the feedwater heater, and the mixture is pumped to the boiler pressure. The steam in the condenser is cooled and condensed by the cooling water from a nearby river, which enters the adiabatic condenser at a rate of 600 kg/s. The enthalpies of all respective points of the system are given below. 6. Turbine hi = 191.81 hz = 192.20 hz = h4 = hạ = 604.66 hs = 610.73 he = 3302.9 h, = hg = h10 = 2665.6 h1=2128.8 %3D Boiler 10 Process heater Condenser PI fwh H PI Determine; (a) The total power output of the turbine (b) The temperature rise of the cooling water from the river in the condenser (c) The mass flow rate of steam through the process heater (d) The rate of heat supply from the process heater (e) The rate of heat transfer to the steam in the boiler
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