Analytical model is proposed to account for carbon emission behavior during replacement of power source from fossil to renewable energy in which sustainability of energy supply is stressed. Analyses show that energy payback time (EPT) should be much shorter than the doubling time of manufacturing cycle to secure adequate available energy during as well as after the replacement. Nuclear, small hydropower, and photovoltaic cell are taken as representative candidates and investigated as an option to replace fossil power until mid-century. Nuclear and small hydropower can be promising candidates but photovoltaic cell needs further development efforts to reduce EPT to avoid energy expense after the replacement.
Issue Section:Gas Turbines: Cycle Innovations
Keywords:fossil fuels, renewable energy sources, nuclear power, sustainable development, photovoltaic cells, global warming, hydroelectric power
Godrej, D., 2001, Climate Change, Verso, London.
Kaya, Y., 2000, “Carbon Dioxide Abatement Strategy (in Japanese),” Nikkan-Kougyo, Aug. pp. 179–217.
Uchiyama, Y., and Yamamoto, H., 1991, “Energy Analysis of Various Electric Power Plants for CO2 Emission Evaluation (in Japanese),” Electric Economy Research, (29), June, p. 7.
Kando, M., 2001, “Photovoltaic Power Generation (in Japanese),” Journal of Thermal and Nuclear Power, 52(10), Oct.
Hondo, H., et al., 2000, “Evaluation of Power Generation Technologies Based on Life Cycle CO2 Emissions (in Japanese),” CRIEPI Report No. Y99009, Mar.
Copyright © 2004