In 1964, the Andersons and his sons in the United States proposed a new theory of electricity production by seawater temperature difference, based on the synthesis of the experience and lessons of their predecessors. They went beyond what their predecessors had done: first, they installed the entire power generation equipment on a huge floating body and floated it in the sea, which greatly shortened the length of the water intake pipe in the cold water area. we no longer use sea water directly as a working medium. Low boiling point liquid propane, ammonia, freon and other substances are used as the working medium of the closed-loop system. In this way, a small high-pressure turbine gas generator could be used in place of the huge low-pressure steam turbine used by Claude. The Andersons call this way of working “the approachclosed loop.
On May 29, 1979, the United States built the world's first closed-loop ocean current thermal power plant in Hawaiian waters. The power plant is installed on a barge and uses ammonia as the working fluid. The completed power plant managed to obtain 9 to 11 kilowatts of electricity. Since then, the United States has embarked on the design and construction of large-scale ocean thermal power generation devices. One of them is a 16-kilowatt ocean energy semi-submersible power plant.
In 1975, Japanese scientists developed a closed-circuit thermoelectric power generation device and succeeded. Ocean thermal energy production is still in the experimental stage, but humans will not let the enormous thermal energy contained in seawater be wasted in vain. With the advancement of science and technologyie and the expansion of human demand for energy, the prospects for developing ocean thermal energy are numerous. the energy is very bright.
The principle of solar power generation is to use the sun's radiant energy to convert it into electrical energy via water or other media and device systems. There are two basic ways to convert it into electrical energy. The first is that light converts the energy of solar radiation into thermal energy, that is, the production of solar thermal energy. Another method is to convert sunlight directly into electrical energy through photovoltaic devices, i.e. solar power generation.
There are two types of thermal energy production. One of these is solar thermal power generation, which uses reflectors to capture sunlight to heat water or other water.them, causing it to generate steam to power heat engines such as turbines, then drive generators to produce electricity. The other is to use the principles of direct thermoelectric conversion, such as thermoelectric (thermocouple) power generation, thermionic power generation, thermoelectronic power generation, magnetic fluid power generation, etc. , to directly convert accumulated solar heat into electrical energy.