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
Ocean Thermal energy conversion ceans Vast natural reservoir: Receiving and Storing Solar energy The oceans take in solar energy in proportion to their sur face area, where is nearly three times that of land O cean Land 复旦大学环境科学与工程系 Department of Environmental Science and Engineering, Fudan University
Ocean Thermal Energy Conversion Oceans Vast natural reservoir: Receiving and Storing Solar Energy The oceans take in solar energy in proportion to their surface area, where is nearly three times that of land. Ocean Land
Ocean Thermal Energy Conversion Water near the surface of tropical and subtropical seas is maintained by this solar radiation a higher temperatures than the water at greater depth or at higher latitudes Ocean Current The warm surface water From the equatorial regions either to the north or to the south Gulf Stream or Japanese Current 复旦大学环境科学与工程系 Department of Environmental Science and Engineering, Fudan University
Ocean Thermal Energy Conversion Water near the surface of tropical and subtropical seas is maintained by this solar radiation a higher temperatures than the water at greater depth or at higher latitudes. Ocean Current: The warm surface water From the equatorial regions either to the north or to the south. Gulf Stream or Japanese Current
Tapping the energy in the ocean currents Gigantic underwater turbines/like windmill Relatively steady velocity/intermittent of wind, solar radiations No need for energy storage The energy available is enormous Serious proposals have put forth to construct ocean current turbines with electricity produced then cabled to shore Economically? Competing with conventional power plant Have not been advanced beyond the discussion stage 复旦大学环境科学与工程系 Department of Environmental Science and Engineering, Fudan University
Tapping the energy in the ocean currents Gigantic underwater turbines/like windmill Relatively steady velocity/intermittent of wind,solar radiations No need for energy storage The energy available is enormous Serious proposals have put forth to construct ocean current turbines with electricity produced then cabled to shore. Economically? Competing with conventional power plant. Have not been advanced beyond the discussion stage
Through the use of heat engines Warm tropical surface 22oC Heat source,I hot t Electricity Cold water at depths of Heat sink, Tcold about 1000 m. 2C T difference is steady, different time different season So no need for energy storage system 复旦大学环境科学与工程系 Department of Environmental Science and Engineering, Fudan University
Through the use of heat engines Warm tropical surface 22 o C Cold water at depths of about 1000 m, 2 o C Heat source, Thot Heat sink, Tcold Electricity T difference is steady, different time, different season. So no need for energy storage system