In the study on the second floor of the villa, Tian Jiayi was sitting in front of the computer in the study, and a camera was pointed at her.
Fang Hong was also there, but he was sitting outside the camera.
At this moment, Tian Jiayi, as the vice president of Qunxing Capital, was participating in a technical meeting within Kyushu Blue Arrow on behalf of the parent company, and was participating in a video conference.
In fact, the headquarters of Jiuzhou Blue Arrow is in Xincheng, and you can go directly to the site, but Fang Hong cannot go there. His current identity is the assistant to Yu Qiu, the chairman of the Natural Science Foundation.
At present, Fang Hong does not want his identity to be known too much.
The ongoing meeting at the moment is a discussion on space photovoltaic power stations. Among the participants, Xiang Lanzhi and Yan Jiandan are among them. These two people have one thing in common, that is, their research and development capabilities have been eliminated by Fang Hong early on.
After an epic level of strengthening, they are now the leading technical masters within Kyushu Blue Arrow.
In addition to these two people, Yin Ting, Zheng Xin, Luo Liang and Chen Zhenwei have also been strengthened at an epic level. They are now technology leaders in their respective technical fields.
At this moment, Fang Hong, who was sitting outside the camera, immediately turned off the microphone and said to the beautiful assistant: "Ask them directly, is the space photovoltaic power station technically and economically feasible? Are other countries crazy and are doing this stuff?
, if it works, our stars capital will follow."
This is what Fang Hong said. As a time traveler, he actually knows it very well, but he must be based on the present and express it in the way of an uninformed person.
In fact, he had already made a decision in his heart. Not only did Star Capital want to follow, but he was serious about it.
Space photovoltaic power stations are also called space power stations or space-based solar power stations. The name is not important. What is important is that since 2000, plans for space solar power stations in various countries around the world have been launched.
This thing was first proposed by Magnesium scientist Peter Glasser in 1968, by building an extremely large solar cell array in geosynchronous orbit, and then transmitting the electric energy to the ground using microwaves to provide electric energy for humans.
According to Grasse's vision, a space power station with an area of kilometers can generate power of 5 billion watts. What is this concept? It is equivalent to meeting the electricity needs of cities with a population of five million.
No matter from any angle, the space power station plan is enough to be called "crazy". It sounds like controllable nuclear fusion and space elevators, which are science fiction-level things that modern people will not be able to see in their lifetime.
In 1979, scientists from the United States proposed a more specific plan. It was technically feasible but not economically feasible, so it was stopped.
After thirty years of stagnation, the old and American military believed that space power stations could provide power to remote bases and there was military demand, so they continued to promote the development of this technology.
Laos and the United States carried out wireless microwave transmission tests in 2008 and 2010 respectively, and proposed the "Alpha" plan this year, etc. Other countries, such as Xiaobenzi, have corresponding space power station plans.
In short, countries with some technological strength are following suit.
China was the latest to enter this field, with demonstrations just started in 2008 the year before last.
But Fang Hong knows that although China started the latest, it is progressing the fastest, and it is "upright" and genuine. Most other countries are basically PPT plans, with mostly deceptive elements.
But if a super engineering project of this scale can really be realized, perhaps only one country in the world can do it.
However, during the video conference at this moment, after Tian Jiayi relayed Fang Hong’s words, Yan Jiandan, who was present at the meeting, replied to her: “The current progress has reached around TRL level four to level five.”
He was worried that Tian Jiayi didn't understand it well, so he further said: "In the aerospace field, there is a professional term called 'Technology Readiness Level', or 'TRL' for short. It is used to measure the maturity of a technology and is divided into levels from level one to nine.
level, the higher the level, the more mature the technology is.”
Yan Jiandan in the video said methodically: "Level one is the principle stage, level two is the conceptual design stage, and level three is when the concept can be proven through experiments. As long as it reaches this level, it means that this technology is already available."
Yan Jiandan added: "At level 4, level 5 and level 6 are various verifications of the technology, and at level 6 it means that the prototype can be operated. After that, levels 7 and 8 are to verify whether the prototype is reliable, and the TRL reaches
Level eight means that the product is qualified and can be used, and the final level nine means that the technical product is not only qualified but also commercially available."
In China, the demonstration stage in this direction was only launched in 2008. Kyushu Blue Arrow has now pushed the progress to around TRL level 4 to 5, and the results can be said to be very good.
It starts the latest but progresses the fastest.
Finally, Yan Jiandan who attended the meeting said: "Of the space power station plans of various countries around the world, we believe that the most competitive or feasible is the 'Alfa' plan of the Magnesium people and the plan developed by our Jiuzhou Blue Arrow team, and we have passed
By comparison, our plan should be better than that of the Chinese people, and we are very confident about this."
Fang Hong immediately closed his microphone and said to Tian Jiayi: "Let him talk about it."
Tian Jiayi immediately looked at the video screen: "Tell me more about it."
Yan Jiandan nodded, and then elaborated in an orderly manner: "According to the 'Alpha' plan announced by NASA, the plan uses a concentrating system, which uses multiple hexagonal reflectors to form a honeycomb structure to reflect sunlight to
On the photovoltaic panel, each hexagon in the scheme can be oriented in any direction and has a secondary mirror."
“In this way, the hexagons inside the honeycomb can be reflected to the primary mirror, and the hexagons outside the honeycomb can be reflected to the secondary mirror, thereby increasing the energy collection rate. However, this solution also has shortcomings and requires as many as 4,000 to 5,000 groups.
Each mirror has a different algorithm, which is extremely difficult to control and has interference problems, including light leakage."
"Although each reflector can be adjusted, the adjustment process will cause the projected area to be smaller than the area of the reflector, causing light leakage. A system established to collect as much light as possible may cause more light leakage."
After a moment of pause, Yan Jiandan sorted out the materials placed in front of his desk, and then said: "Our plan is a spherical shape, consisting of two spherical condensers composed of hexagonal reflectors, and the outer layer uses a unidirectional film.
Material, sunlight can enter but cannot leave."
Yan Jiandan showed the material in front of the camera. There was a concept drawing on it. He said: "This is a polar symmetrical rotary body that simulates the shape of the earth. The upper and lower holes are exactly where the earth's north and south poles are. Taking out this part can
Make the space power station lighter without reducing the incident light."
"Compared with the 'Alfa' plan of the Magnesium people, this plan has one of the biggest features, and that is convenience. In terms of the operating posture of the space power station, due to the self-tilt of the earth's axis, all space power stations can achieve 99
Receive solar energy % of the time.”
Yan Jiandan added: "Whether it is the 'Alfa' plan of the Magnesia people or our plan, they need to have automatic power to track the direction of the sun to maximize efficiency, but our plan is a sphere composed of a unidirectional film, no matter how it moves
No control components are needed, and the complexity of system control is greatly reduced."
"Based on our comparison, we concluded that the mass of the space power station required by our solution is 15.71% lower than that of the Magnesium People's 'Alfa' solution, while the power quality can be improved by 31.68%. At the same time, due to the high degree of recovery
The light efficiency increases the focus coverage area of the photovoltaic cells and the heat dissipation pressure is also lower."
Yan Jiandan changed the subject and said matter-of-factly: "However, our solution also has certain shortcomings, because the light distribution is uneven, which will reduce the photoelectric conversion efficiency of the photovoltaic cells, so it is necessary to strengthen the research and development of photovoltaic cell technology.
