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Problem 2. In a fossil fuel power plant the chemical energy stored in fossil fuels such as coal, fuel oil, natural gas or oil shale and oxygen of the air is converted successively into thermal energy, mechanical energy and, finally, electrical energy. Now assume that a coal-fired power plant with a capacity of 100 MW uses coal as an energy source to produce heat which later converted to electrical energy with 60% efficiency (40% is lost as heat). The total heat of coal is given as 6000 kcal/kg. The combustion temperature for steam (water vapor) is 100 °C. The cooling water is provided from a river with an ambient temperature of 25 °C. The power plant operates 24 hours per day. Based on information given in the problem, calculate: a) How many tons on coal should be used in this power plant? b) Daily amount of DI water to produce steam? c) Daily amount of cooling water for condensation?

Problem 2. In a fossil fuel power plant the chemical energy stored in fossil fuels such as coal, fuel oil, natural gas or oil shale and oxygen of the air is converted successively into thermal energy, mechanical energy and, finally, electrical energy. Now assume that a coal-fired power plant with a capacity of 100 MW uses coal as an energy source to produce heat which later converted to electrical energy with 60% efficiency (40% is lost as heat). The total heat of coal is given as 6000 kcal/kg. The combustion temperature for steam (water vapor) is 100 °C. The cooling water is provided from a river with an ambient temperature of 25 °C. The power plant operates 24 hours per day. Based on information given in the problem, calculate: a) How many tons on coal should be used in this power plant? b) Daily amount of DI water to produce steam? c) Daily amount of cooling water for condensation?

Introduction to Chemical Engineering Thermodynamics
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
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Problem 2. In a fossil fuel power plant the chemical energy stored in fossil fuels such as coal, fuel oil, natural gas or oil shale and oxygen of the air is converted successively into thermal energy, mechanical energy and, finally, electrical energy. Now assume that a coal-fired power plant with a capacity of 100 MW uses coal as an energy source to produce heat which later converted to electrical energy with 60% efficiency (40% is lost as heat). The total heat of coal is given as 6000 kcal/kg. The combustion temperature for steam (water vapor) is 100 °C. The cooling water is provided from a river with an ambient temperature of 25 °C. The power plant operates 24 hours per day. Based on information given in the problem, calculate: a) How many tons on coal should be used in this power plant? b) Daily amount of DI water to produce steam? c) Daily amount of cooling water for condensation?
Transcribed Image Text:Problem 2. In a fossil fuel power plant the chemical energy stored in fossil fuels such as coal, fuel oil, natural gas or oil shale and oxygen of the air is converted successively into thermal energy, mechanical energy and, finally, electrical energy. Now assume that a coal-fired power plant with a capacity of 100 MW uses coal as an energy source to produce heat which later converted to electrical energy with 60% efficiency (40% is lost as heat). The total heat of coal is given as 6000 kcal/kg. The combustion temperature for steam (water vapor) is 100 °C. The cooling water is provided from a river with an ambient temperature of 25 °C. The power plant operates 24 hours per day. Based on information given in the problem, calculate: a) How many tons on coal should be used in this power plant? b) Daily amount of DI water to produce steam? c) Daily amount of cooling water for condensation?
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