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Part 3: Mass and energy balance on a coal-fired power plant (33 pt total) In this problem, you will examine the mass and energy balance
Part 3: Mass and energy balance on a coal-fired power plant (33 pt total) In this problem, you will examine the mass and energy balance on a coal-fired power plant. The power plant has an efficiency of 33.3%. For the waste heat, 15% is released as stack losses and 85% to cooling water. The cooling water increases in temperature by 10C. The power plant burns sub-bituminous coal. The coal has an energy content of 16,000 kJ/kg, a carbon mass percentage of 48%, an unburnable mass percentage of 8%, and a trace amount of mercury at a concentration of 0.1 mg/kg. Of the unburnable material, 70% becomes fly ash and 30% becomes bottom ash. A particulate matter control device captures 99.5% of the fly ash. 0 . Draw a mass balance and an energy balance for the plant. This means to draw 2 diagrams: one showing all the mass inputs and outputs and one showing the same for energy. Fig. 1.17 in your text is a good example. (5 pt) Part 3: Mass and energy balance on a coal-fired power plant (33 pt total) In this problem, you will examine the mass and energy balance on a coal-fired power plant. The power plant has an efficiency of 33.3%. For the waste heat, 15% is released as stack losses and 85% to cooling water. The cooling water increases in temperature by 10C. The power plant burns sub-bituminous coal. The coal has an energy content of 16,000 kJ/kg, a carbon mass percentage of 48%, an unburnable mass percentage of 8%, and a trace amount of mercury at a concentration of 0.1 mg/kg. Of the unburnable material, 70% becomes fly ash and 30% becomes bottom ash. A particulate matter control device captures 99.5% of the fly ash. 0 . Draw a mass balance and an energy balance for the plant. This means to draw 2 diagrams: one showing all the mass inputs and outputs and one showing the same for energy. Fig. 1.17 in your text is a good example. (5 pt)
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