Energy and the Environment CHEN HONG E-mail:chong@fudan.edu.cn Phone:021-65642526 复旦大学环境科学与工程系 Department of Environmental Science and Engineering, Fudan University
Energy and the Environment CHEN HONG E-mail: chong@fudan.edu.cn Phone: 021-65642526
Breaking our dependence on the limited fossil fuel resources Renewable energy source Substantial environmental Reasons 复旦大学环境科学与工程系 Department of Environmental Science and Engineering, Fudan University
Breaking our dependence on the limited fossil fuel resources Substantial environmental Reasons Renewable energy source
Renewable and Nonrenewable Energy Sources All the fossil fuels(coal, oil, natural gas, shale oil, tar sands, etc. ) Uranium-235 nuclear fission fuel, deuterium nuclear fusion fuel, and some other types of geothermal energy The time to exhaust a nonrenewable resource depends on the rate of use and size of the resource It is likely that most forms of nonrenewable energy will get more expensive when they are near exhaustion We have only three sources of renewable energy: Solar, geothermal, and tidal All energy sources based on the solar energy incident on earth-direct sunlight wind, hydroelectric power, ocean currents, ocean thermal gradients, and biomass are renewable The energy in the oceans tides has its origin in the gravitational interaction between the earth and the moon and to a lesser extent between the earth and the sun The more renewable energy we use, the cheaper it will be 复旦大学环境科学与工程系 Department of Environmental Science and Engineering, Fudan University
Renewable and Nonrenewable Energy Sources All the fossil fuels(coal, oil, natural gas, shale oil, tar sands, etc.), Uranium-235 nuclear fission fuel, deuterium nuclear fusion fuel, and some other types of geothermal energy. The time to exhaust a nonrenewable resource depends on the rate of use and size of the resource. It is likely that most forms of nonrenewable energy will get more expensive when they are near exhaustion. We have only three sources of renewable energy: Solar, geothermal, and tidal. All energy sources based on the solar energy incident on earth – direct sunlight, wind, hydroelectric power, ocean currents, ocean thermal gradients, and biomass, are renewable. The energy in the oceans’ tides has its origin in the gravitational interaction between the earth and the moon, and to a lesser extent, between the earth and the sun. The more renewable energy we use, the cheaper it will be
Direct uses of solar radiation Indirect/Less direct uses of solar radiation Hydroelectric W Ind energy Biomass Renewable Ocean thermal gradients Energy Ocean currents Ocean waves Ocean tides Geothermal resources 复旦大学环境科学与工程系 Department of Environmental Science and Engineering, Fudan University
Direct uses of solar radiation Indirect/Less direct uses of solar radiation Hydroelectricity Wind energy Biomass Ocean thermal gradients Ocean currents Ocean waves Ocean tides Geothermal resources Renewable Energy
Energy consumption in 2003 in U.S. Table 1.1 U.S. Energy Consumption in 2003 Source Amount OBtm Percent I QBtu Equiv Coal 1.08×10 9 tons 22.6 23.0 47.8×10°tons Natural gas 218×1012t3 22.5 22.9 097×1012ft Petroleum 6.72×10bbl 39.1 398 172×10bbl N uclear elcc 757×10°kWh 797 8.1 95×10kWh Renewables 578×10kWh 6.15 6.3 94×10kWh Total 98.3 复旦大学环境科学与工程系 Department of Environmental Science and Engineering, Fudan University
Energy consumption in 2003 in U.S