What is a nuclear power plant
Thermal power stations use coal and oil to generate electricity, hydroelectric power stations use hydropower to generate electricity, and nuclear power plants are new types of power stations that use the energy stored in the nucleus to generate electricity. Nuclear power plants can be roughly divided into two parts: one is the nuclear island that uses nuclear energy to produce steam, including The reactor unit and the primary loop system; the other part is the conventional island that uses steam to generate electricity, including the turbo-generator system.
The fuel used in nuclear power plants is uranium. Uranium is a very heavy metal. The nuclear fuel made of uranium is fissioned in a device called a "reactor" to generate a large amount of heat energy, and then the heat energy is taken out by the water under high pressure, and steam is generated in the steam generator, and the steam drives the gas turbine. Spinning with the generator, electricity is continuously generated and sent to all directions through the grid. This is how the most common pressurized water reactor nuclear power plant works.
In developed countries, nuclear power has been developed for decades, and nuclear power has become a mature energy source. China's nuclear industry has a history of more than 40 years of development. It has established a fairly complete nuclear fuel cycle system from geological exploration, mining, component processing, and post-processing. Various types of nuclear reactors have been built and have many years of experience in safety management and operation. , has a professional and technical team. The construction and operation of nuclear power plants is a complex technology. China has been able to design, build and operate its own nuclear power plants. Qinshan Nuclear Power Plant was researched, designed and built by China itself. The number of nuclear power plants in Japan is 55, and the proportion of nuclear power is 30%. It is planned to increase the proportion of nuclear power to 41% by 2030. India has 20. Russia has 31 nuclear power plants and 16 EU countries have nuclear power plants, for a total of 158 nuclear power plants. France has 59, the United Kingdom has more than 30, and the United States has the most with 104.
In terms of power generation ratio, there are currently more than 400 nuclear power plants in the world, with annual power generation accounting for 17% of the world's total power generation. Among them, France's nuclear power installed capacity accounts for 78% of the total installed capacity, Japan's nuclear power installed capacity accounts for 36% of the total installed capacity, and the United States accounts for 36% of the total installed capacity. Nuclear power installed capacity accounted for 20% of the total installed capacity, South Korea's nuclear power installed capacity accounted for 42% of the total installed capacity, while only 1.6% in mainland China. China has surpassed the United States to become the world's largest carbon emitter.
根According to the original value, 1,000 nuclear power plants are built around the world, and 40% of the world relies on nuclear energy. 2,500 nuclear power plants can meet the current electricity consumption of the world. However, under the movement of anti-nuclear activists, there is only 16% of the power generation capacity. If China builds more than 100 nuclear power plants, it may be able to make up 4%. If China has more than 600 nuclear power plants, there is no energy problem. Former NASA scientist Hansen co-authored a study. The study estimates that between 1971 and 2009, the use of nuclear energy likely prevented at least 1.84 million deaths from the ill effects of burning fossil fuels worldwide. "There is no such thing as an energy system without flaws," they said. We want to formulate energy system policies based on facts, without sentimentality and prejudice that do not apply to nuclear energy technology in the twenty-first century. ” The development of nuclear energy is crucial to medical treatment, environmental protection, military, aircraft carrier, robot power, nuclear-powered satellites, aerospace nuclear-powered aircraft, and the power supply of aerospace stations. With the maturity of nuclear batteries used in aerospace, aviation, deep-sea robotics and other fields, nuclear batteries and solar cells will definitely be used in automobiles, a major energy source. Photon transmission technology, and now various powerful countries are turning this into reality. People fantasize about using lasers to build a rainbow bridge between the earth and the moon to mine minerals and energy from the moon. The International Energy Agency asserts that if the share of nuclear power declines significantly in the coming decades, reaching the 450ppm greenhouse gas target will require the strategic deployment of emerging low-carbon technologies that still need to be validated. The current major nuclear power countries also realize that without the participation of nuclear power, it is a difficult and expensive thing to achieve emission reduction targets. Based on shared goals, our near-term energy supply needs to focus on existing nuclear and energy-stabilized geothermal energy.