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[ Hot Focus on Chemical Machinery and Equipment Network ] Building a solar power station in space? It may sound like nonsense, but in fact, the feasibility of space-based solar power technology has been scientifically demonstrated since the 1960s, and the concept of launching microwaves from orbit to the ground has also been Confirmed to be feasible
.
Many countries are working to reduce their carbon footprint and are gradually turning to renewable resources
.
If people want to obtain the development of civilization and lasting green energy, they have to reach out into space
.
Recently, the British government is considering investing 16 billion pounds to build space solar power plants
.
Chemical Machinery and Equipment Network Hot Focus on Chemical Machinery and Equipment Recently, the British government is considering investing 16 billion pounds to build a space solar power station.
Many countries are working to reduce their carbon footprint and are gradually turning to renewable resources
.
If people want to obtain the development of civilization and lasting green energy, they have to reach out into space
.
Recently, the British government is considering investing 16 billion pounds to build space solar power plants
.
.
By 2050, global energy demand is expected to increase by nearly 50%, but among new clean energy sources, nuclear energy is controversial because of its high risk, and the stability of wind energy and hydropower will be affected by seasons and geographic locations.
Solar energy from space, due to its enormous volume and inexhaustible advantages, could be the key to helping meet the growing demands of the world's energy sector and combat rising global temperatures
.
Solar energy from space, due to its enormous volume and inexhaustible advantages, could be the key to helping meet the growing demands of the world's energy sector and combat rising global temperatures
.
The space solar power station is developed based on the space solar power generation technology
.
Use satellites to gather solar energy in space, and then focus the energy to the ground, and then convert it into electricity for human use
.
For this, it will be necessary to send huge spacecraft equipped with solar panels into orbit
.
These panels generate electricity and send it using high-frequency radio waves to special receivers located on Earth, where they have already converted the waves into electricity in the process
.
.
Use satellites to gather solar energy in space, and then focus the energy to the ground, and then convert it into electricity for human use
.
For this, it will be necessary to send huge spacecraft equipped with solar panels into orbit
.
These panels generate electricity and send it using high-frequency radio waves to special receivers located on Earth, where they have already converted the waves into electricity in the process
.
As early as August 2010, 12 academicians and more than 100 experts in related fields put forward a roadmap for the development of China's space solar power plants at the space solar power plant technology seminar held by the China Academy of Space Technology
.
According to the roadmap, starting from 2030, China will build a megawatt-scale small space solar test power station, and by 2050, it will have the ability to build a gigawatt-scale commercial space solar power station
.
The first stage is divided into three specific steps.
First, the ground and aerostat test verification of key technologies is carried out, followed by the verification of high-altitude ultra-high voltage power generation and transmission, and finally the space wireless energy transmission test is carried out
.
.
According to the roadmap, starting from 2030, China will build a megawatt-scale small space solar test power station, and by 2050, it will have the ability to build a gigawatt-scale commercial space solar power station
.
The first stage is divided into three specific steps.
First, the ground and aerostat test verification of key technologies is carried out, followed by the verification of high-altitude ultra-high voltage power generation and transmission, and finally the space wireless energy transmission test is carried out
.
The space solar power plant is a huge system engineering, its weight and scale far exceed the existing aerospace facilities, so people call it the "Manhattan project" in the field of aerospace and energy
.
For example, even a small megawatt-class space solar power station weighs more than the current International Space Station, considering the large transport rockets required for launch and the difficulty of in-orbit assembly
.
.
For example, even a small megawatt-class space solar power station weighs more than the current International Space Station, considering the large transport rockets required for launch and the difficulty of in-orbit assembly
.
At present, the weight of solar panels is one of the problems that need to be solved in the construction of space solar power stations, but this problem has been solved by the development of ultra-light solar cells.
This ultra-light solar cell is a research of the California Institute of Technology The proposed design for a modular power station, consisting of thousands of ultralight solar cell watts, is the lightest integrated multifunctional prototype to date, capable of harvesting sunlight, converting it into radio frequency electricity, and then using A controlled beam of light transmits this energy wirelessly
.
How to transport all the components to space is also a huge problem
.
At present, companies such as SpaceX are trying to change this situation.
The rockets they have developed are reusable, and the more powerful "Starship" rockets are about to enter the critical test flight stage, which is expected to greatly reduce the cost of space power generation
.
This ultra-light solar cell is a research of the California Institute of Technology The proposed design for a modular power station, consisting of thousands of ultralight solar cell watts, is the lightest integrated multifunctional prototype to date, capable of harvesting sunlight, converting it into radio frequency electricity, and then using A controlled beam of light transmits this energy wirelessly
.
How to transport all the components to space is also a huge problem
.
At present, companies such as SpaceX are trying to change this situation.
The rockets they have developed are reusable, and the more powerful "Starship" rockets are about to enter the critical test flight stage, which is expected to greatly reduce the cost of space power generation
.
However, just assembling a solar power plant would require multiple launches of the space shuttle
.
The purpose of space solar power is to reduce carbon emissions in the long run, but space launches also generate significant carbon emissions and costs
.
And even if a space solar plant is successfully constructed, its operation faces several practical challenges, such as the possibility of space debris destroying solar panels
.
Similarly, it is difficult to transmit energy from solar satellites to the ground, and scientists need to improve the efficiency of wireless energy transmission.
According to the current technology, only a small part of the collected solar energy can reach the earth
.
.
The purpose of space solar power is to reduce carbon emissions in the long run, but space launches also generate significant carbon emissions and costs
.
And even if a space solar plant is successfully constructed, its operation faces several practical challenges, such as the possibility of space debris destroying solar panels
.
Similarly, it is difficult to transmit energy from solar satellites to the ground, and scientists need to improve the efficiency of wireless energy transmission.
According to the current technology, only a small part of the collected solar energy can reach the earth
.
Although the above-mentioned problems still exist in space solar power plants, and the possibility of its realization remains to be seen, the more important significance of researching and building space solar power plants is that it can drive the overall progress of space technology in the entire aerospace field , such as the ability to manufacture large-scale structures on-orbit, human utilization Space capability and microwave/laser transmission capability with very many application scenarios
.
Therefore, we have reason to believe that with the development of space technology in various countries, one day, we will be able to obtain energy resources from space to benefit the entire human society
.
The more important significance of researching and building space solar power plants is that it can drive the overall progress of space technology in the entire aerospace field. .
Therefore, we have reason to believe that with the development of space technology in various countries, one day, we will be able to obtain energy resources from space to benefit the entire human society
.
(Source: Science and Technology Daily, Science Fiction Network)
