EML4550HW2ans

# EML4550HW2ans - 1 20 points Calculate the annual CO2...

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1. 20 points Calculate the annual CO2 emissions based on the energy that was actually used over the past year. Electricity used over past year: 7016 kWh The city of Tallahassee gets 95% of its power from natural gas and 5% from coal. Electricity from natural gas = Total Energy x .95 = 6665.2 kW Electricity from Coal = Total Energy x .05 = 350.8 kW Natural Gas: Carbon Content Coefficient: 14.47 g/kBTU Fraction Oxidized: .995 Efficiency: 60% - Energy Used = Electricity natural gas x Efficiency x Conversion BTU_Natural_Gas 6665.2 1 .60 3414.4 BTU kWh 37.929_MBTU CO2 emissions=Fuel Energy x Carbon Content Coefficient x Fraction Oxidized x (44/12) CO2_emissions 37.939MBTU 14.47 g Carbon k BTU .995 44 12 .002205lb g 4412lb_CO2 Coal: Carbon Content Coefficient: 25.49 g/kBTU Fraction Oxidized: .99 Efficiency: 35% - Energy Used = Electricity coal x Efficiency x Conversion BTU_Coal 350.8 1 .35 3414.4 BTU kWh 3.422_MBTU CO2 emissions=Fuel Energy x Carbon Content Coefficient x Fraction Oxidized x (44/12) CO2_emissions 3.422MBTU 25.49 g Carbon k BTU .99 44 12 .002205lb g 698.2lb_CO2 Total emissions from electricity use = 5110 lb CO2/year

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2. 5 points Calculate the reduction in the annual CO2 emissions based on the use of Energy
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EML4550HW2ans - 1 20 points Calculate the annual CO2...

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