Atomic power generation, power generation, solar power generation, new energy-saving power generation, wind power, sea water temperature difference power generation, production geothermal energy...
In recent years, thermal energy and nuclear power generation will increase due to limited exploitable hydroelectric resources. Air pollution worsens the global greenhouse effect and nuclear power production is blocked by some anti-nuclear activists, making its promotion more difficult. Therefore, some people vigorously advocate the development of safe, non-nuclear energy. pollute renewable energy sources such as solar energy and wind energy in order to achieve economic development and protect the global environment. In order to allow everyone to better understand renewable energy, I would like to briefly describement the relevant electricity generation methods that are currently feasible as follows:
Solar, wind, sea water temperature difference, geothermal
☆Energy production solar
There are three ways to use solar energy to generate electricity:
The first is to use photovoltaic cells to directly convert sunlight into electricity .
The second method uses heat collector plates to heat water to generate steam to drive turbines and steam generators.
The third uses sunlight to break down water into two gases, hydrogen and oxygen, then uses the hydrogen as a fuel for electricity generation.
The three methods above all require stable sunlight and ample land. For example, to build a solar power plant with an electricity production equivalent tothat of the fourth nuclear power plant, approximately 6,750 hectares of land, approximately the size of the fourth nuclear power plant, will be built fourteen times the area of the current site, and care must also be taken to ensure that the land has sufficient sunlight and stable.
☆Wind Power
Wind power directly uses wind energy to drive the wire coils of the generator to produce electricity. Its most distinctive feature is the Dutch symbol: the windmill. There is also a wind power plant in Qimei, Penghu, Taiwan. Its electricity production is about a million times lower than that of a nuclear power plant. It can be seen that the development of such a power plant requires a large area of land and stability. and strong wind power is also an indispensable condition.
☆Electricity production by difference in water temperaturesea
On the sea, sunlight only shines on the surface of the sea but not on the depth. Therefore, the temperature difference between certain marine surfaces and deep seas. can reach 200℃. Current research shows that some special gases (such as ammonia) are used to absorb heat and become gaseous when passing through the sea surface to drive the turbine to produce electricity. The gas used is then sent into the depths. the sea must be cooled into liquid and continue the next cycle. In terms of technology, the biggest challenge is laying pipelines in the deep sea. Due to this challenge, it cannot be overcome effectively. So far, there are no commercial seawater temperature difference power plants in the world.
☆Geothermal energy production
The earth is a sphere with a radius of 6,000 kilometers, and the crust ofthe surface rock layer is about 30 kilometers from the temperature at the center of. Earth's temperature reaches around 6,000 degrees Celsius. As a result, in some areas the temperature increases by approximately 30°C for every 100 meters of depth in the ground. In volcanic hot spring areas, the temperature can reach 100°C. This is the result of magma slowly erupting from cracks in the Earth's crust. When groundwater passes through these areas, it turns into steam at high temperatures and high pressures. If proper engineering methods are used to cause these phenomena, the steam can be sent to the steam turbine to produce electricity. Taiwan is located in the Pacific Ring of Fire and has many geothermal areas. However, most of them cannot be used to generate electricity because they are too acidic or contain too littlee steam. 1980The National Science Council built a demonstration geothermal power plant in the Qingshui area of Yilan in 2008, but it ceased operation in late 1993 due to declining geothermal production.