In 20 years, human beings realize or recycle solar power from space

According to British media news: An international team of scientists said that capturing solar power from space and then transferring energy back to Earth via wireless transmission is a cost-effective way of generating electricity that can meet global electricity demand. They rely on a series of technologies that are being developed in the laboratory to use satellites in orbit to capture solar power and then send it back to earth. This idea can be technically viable within 10 or 20 years and economically viable within 30 years or less (or 20 years).

International Academy of Aeronautics and Astronautics: A team of researchers from the International Academy of Astronautics Sciences, Paris, which has significant significance in space solar power, said: “Obviously, capturing solar energy from space will play a very important role in meeting global energy needs in the 21st century.” For 25 years, NASA’s veteran employee and former director of the Avantgarde Concept Research Department, led by John Mankins, for the first time conducted an international assessment of the feasibility of collecting solar power in space and then transmitting it to the Earth via wireless energy transmission.

Researchers said that the government should invest funds to make use of the idea of ​​solar energy in space become a reality. Because of the economic uncertainty, it is difficult to do this with the private sector alone. The study pointed out that the government and the private sector should increase investment and support scientific researchers in exploring the economic feasibility of this idea. As a result of continuing to rely on fossil fuels that are limited and cause environmental pollution, the human energy future faces challenges. Under such circumstances, the development of solar energy technology is imperative.

Researchers have not yet evaluated the cost of building space-based power plant researchers and have not assessed the cost of building space solar power plants. Some scientists have stated that the use of space solar energy is a potential long-term solution to meet global energy needs. According to scientists' ideas, a solar power satellite was first introduced into the orbit over the equator and then continued to be launched to form a group of space power stations. Each solar station will have a width of several kilometers and can capture sunlight 24 hours a day.

Ground solar panels convert sunlight into electrical energy, which captures solar energy by up to half the efficiency of a space power station. The solar energy captured by the satellites will also be converted into electrical energy, which will then be transmitted to any area of ​​the earth's power grid via a large microwave transmission antenna or laser. Skeptics point out that this idea is doomed to bankruptcy, at least until the cost of commercial power stations' orbits drops dramatically. In addition to higher costs, the obstacles to building space power stations include space debris and the lack of relevant market research.

The study was conducted between 2008 and 2010, and the research papers were peer-reviewed. The study pointed out that the commercial prospects of using space solar energy are increasing, partly because the government encourages the development of pollution-free green energy technologies. Mankins said that the pilot project to verify this technology will be on par with the 400-tonne international space station, using low-cost launch vehicles developed for other space exploration fields.

According to the research team's estimation, the development of low-cost carrier rockets capable of launching full-scale commercial solar power satellites and being reusable requires tens of billions of dollars of funds. In order to implement this huge project, government aerospace departments, companies, universities and non-government agencies need to jointly conduct necessary research and development work. Over the past 10 years, interest in the creation of space power stations has increased as a result of concerns about future global oil production and the production of other fossil fuels will peak after peaking.

Optimistic vision: commercial viability in 20 years To meet energy demand, stimulate economic development, and reduce greenhouse gas emissions from fossil fuels, many countries are developing new energy technologies. It has been 40 years since the study of how to use solar energy in space. This research has been carried out by a series of agencies including the US Department of Energy and NASA. In September this year, a research team composed of analysts from the United States and India on business, policy, and national security called on the United States and India to cooperate in the development of a feasibility study on space solar power stations. The goal of this project is to be commercially viable within 20 years.

The research team was co-sponsored by the U.S. Foreign Relations Association and the Aspen India Institute. The members include Denis Blair, the former National Intelligence Director of the United States, and Naresh Chandra, the former Indian Ambassador to the United States. Colonel Michael Smith, head of the US Air Force chief visionary and chief of the strategy and technology center at Maxwell AFB, Alabama, said: “If we can succeed, this program can deliver safe and clean energy to any location in the world. Government and industry It is necessary to cooperate and carry out research in this area.”

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