[15] 5. Kaya Identity Use the Kaya identify values listed below from the US DoE

Question

[15] 5. Kaya Identity Use the Kaya identify values listed below from the US DoE Energy Information Agency to determine CO2 emission rates in millions of metric tons CO2 [5] a.In 2010 [10] b. In 2040 given the 2010 emission rate and the projected growth rates of the kaya identify values. Value in 2010 Annual percent change Kaya Identity Factor Carbon dioxide intensity of energy ( metric 77.9 tons CO2 /Billion Btu) Energy Intensity (thousand Btu/S GDP) 11.0 Affluence.PercapitaGPD $/person)6,836 Population (millions) China US China US 0.3 -0.5 -2.9-2.1 1.6 0.00.9 7.5 42,1305.7 1.341 310

Explanation / Answer

CO2 Emission=Co2 Intensity of Energy*Energy Intensity*Affluence*Population

CO2 Emission for China=1341*6836*(11/1000000)*79=7969.69 metric tons CO2

CO2 Emission for USA = 310*42,130*(7.5/1000000)*57.3=5613 metric tons CO2

Annual change is -0.3% for China hence for 40 years =0.97^40=0.295

Hence after 40 years CO2 emission for China will be 0.295*7969.7=2356 metric tons of CO2

Annual change is -0.5% for USA hence for 40 years=0.95^40=0.13

Hence after 40 years CO2 emission for USA will be 0.13*5613=721 metric tons of CO2

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