Today's technology is increasingly advanced, life is rich and colorful, and human civilization has reached an unprecedented height. Relatively, the global environment is increasingly being destroyed, resources are slowly depleting, and the search for new energy continues the survival of mankind and has become a common problem for scientists worldwide. So scientists turned their eyes to the hope of the earth - the sun.
Legend has it that the God of the Sun drove four horses with golden light all over their body and sat on a golden chariot. Every morning and evening, they returned light and heat to the world. Out of respect for the gods, people have always revered the sun. Solar energy is abundant, economical and recyclable, so solar power generation has become a new renewable energy source that is in harmony with the ecological environment.
In 1969, France built the world’s first solar power station, the Ordeo solar power station. Although the power was only 64 kilowatts at that time, it laid the foundation for the research and design of the solar power station. In 1982, the United States built a 10 million-kilowatt tower-type solar thermal intermediate pilot power plant. The United States plans to produce 7% and 25% of the total energy from 2000 to 2020. However, since the photothermal converter (concentrator) needs to take up a lot of space for heating and heating, the equipment is too large. In addition, the solar power station needs to have an energy storage device to meet the needs of the evening and cloudy days, and the required condenser is needed. The cost is also relatively expensive and the power generation economy is poor. It is estimated that the efficiency of a large-scale solar power station is only about 30%, thus seriously affecting the widespread promotion and application.
Among the existing solar energy utilization technologies, the lowest cost solar energy utilization method should be the tower solar thermal technology that was developed in the United States and Israel in the 1970s. The material it uses is only a glass plane mirror. The cost of the material is extremely low. To use solar energy on a large scale is completely conditional. However, for more than 30 years, because the spotlighting technology has not been resolved, such a tower solar thermal utilization technology has remained at the stage of scientific research and has not been well utilized to benefit humanity. In response to this problem, He Kaihao has devoted more than 20 years of painstaking research to breaking the traditional concept and has developed a patent that is very useful for a low-carbon economy - the “concentrating sight device of a tower solar thermal power generation system†and has applied for a patent. No. (200910155646.6) broke through the bottleneck of the tower solar thermal power generation system.
Tower-type solar thermal power generation system mainly consists of four parts: the concentrating system, absorption, heat exchange system, heat storage system and power generation system. The condenser system includes a mirror, a support structure, a transmission device, and a tracking control system. A large tower solar power station requires thousands of sets of heliostats, the cost of which accounts for more than half of the total cost of power station construction, and the transmission is the most critical and most costly part of the heliostat. The efficiency and cost of heliostats and tracking control systems largely affect the cost-effectiveness of thermal power plants and are factors that need to be considered in the construction of solar thermal power plants.
Regardless of the efficiency of the concentrating system, the heat collection efficiency, or the cost of the entire power plant, the core part of the tower solar thermal power plant is how to make the heliostats accurately track the sun's rotation and emit radiation to it. The amount of solar energy on the surface is maximized, which is an important issue in the technology of tower solar thermal power generation systems.
He Kaihao introduced that “My patent is to solve the problem of concentrated light targeting technology in the solar thermal utilization of towers. With this patented technology, only with the digital cameras or digital cameras that are widely used now can we achieve accurate concentration. Aiming.†(Method shown in Fig. 1) In order to further reduce costs, it is also possible to use a light projection mechanism to project a large amount of light to be detected to one place, and a detection device is used to detect the concentrating aim of a large number of heliostats. (Method is shown in Fig. 2) The technical scheme adopted by Ho Kaihao's patent is: a condenser light sighting device of a tower solar thermal power generation system, including a laser beam generator, a light projection mechanism and a projection drive mechanism. The laser beam generator is fixedly arranged on the solar concentrator surrounding the high tower, and is located at the rotation center of the reflector of the solar concentrator, and the laser beam generator on each solar concentrator sequentially emits the solar cooker directed at the high tower. Laser beam. The light projection mechanism and the projection drive mechanism are disposed near the optical path of the laser beam, and the light projection mechanism is composed of a projection mirror or a refraction mirror. When the laser beam generator emits the laser beam, the projection drive mechanism drives the light projection mechanism to move to the laser beam. In the light path, the laser beam is reflected or refracted by the light projection mechanism onto the inspection screen.
According to He Kaihao, the technical principle of this patent is to solve geometric problems based on the auxiliary lines in mathematics. The geometric auxiliary line is a laser beam that is directed from the center of each heliostat to the target of the concentrator. With this laser beam as an auxiliary line, it is very simple to determine whether the solar light reflected by the heliostat is aimed at the target. (Figure 2) Although the principle is very simple, it is very important for people to use ultra-large-scale solar energy at very low cost.
Compared with the previous technology, He Kaihao's condenser aiming device uses the laser beam aimed at the focused target as a standard. According to the movement of the sun, the direction of the solar reflected light and the direction of the laser beam of each solar concentrator are time-divisionally projected. In comparison, in order to change the angle of the heliostat, the reflected light of the sun is aligned with the direction of the laser beam so that the focus can be accurately focused. The concentrating aiming device has a simple structure and a clever design. The laser beam and the solar reflection light can be conveniently projected and sampled, so that the tower solar thermal power generation system no longer needs to mathematically calculate the rotation angle of the solar concentrator, thereby solving the problem. There were technical problems before.
Our country has a vast territory and complex terrain. In the past, various regions need to build towers according to specific geographical locations. If He Kaihao design method is used, there is no need to build towers based on specific geographical locations in each region. The device is simple in structure, easy to operate and low in cost. Making each heliostat into the size of a window glass can be done by installing it on the wall and roof of a building like a glass curtain wall. Through the practice under many different conditions, it has been proved that He Kaihao's invention patent made a breakthrough in the tower solar thermal power generation system, solved the existing bottleneck problems, greatly improved the power generation efficiency, reduced the cost, and The promotion and application of scale is no longer a dream.
He Kaihao's invention of a concentrator system for tower solar thermal power generation system broke through the bottleneck of tower solar thermal power generation system technology for more than 30 years, created a miracle in the history of new energy technology utilization, and developed and utilized solar energy in China. Provides a viable path. Solar energy sources are inexhaustible and are inexhaustible. The use of He Kaihao's equipment will inevitably create a new pattern for the large-scale promotion of tower-type solar thermal power generation systems in China. contribution.
Legend has it that the God of the Sun drove four horses with golden light all over their body and sat on a golden chariot. Every morning and evening, they returned light and heat to the world. Out of respect for the gods, people have always revered the sun. Solar energy is abundant, economical and recyclable, so solar power generation has become a new renewable energy source that is in harmony with the ecological environment.
In 1969, France built the world’s first solar power station, the Ordeo solar power station. Although the power was only 64 kilowatts at that time, it laid the foundation for the research and design of the solar power station. In 1982, the United States built a 10 million-kilowatt tower-type solar thermal intermediate pilot power plant. The United States plans to produce 7% and 25% of the total energy from 2000 to 2020. However, since the photothermal converter (concentrator) needs to take up a lot of space for heating and heating, the equipment is too large. In addition, the solar power station needs to have an energy storage device to meet the needs of the evening and cloudy days, and the required condenser is needed. The cost is also relatively expensive and the power generation economy is poor. It is estimated that the efficiency of a large-scale solar power station is only about 30%, thus seriously affecting the widespread promotion and application.
Among the existing solar energy utilization technologies, the lowest cost solar energy utilization method should be the tower solar thermal technology that was developed in the United States and Israel in the 1970s. The material it uses is only a glass plane mirror. The cost of the material is extremely low. To use solar energy on a large scale is completely conditional. However, for more than 30 years, because the spotlighting technology has not been resolved, such a tower solar thermal utilization technology has remained at the stage of scientific research and has not been well utilized to benefit humanity. In response to this problem, He Kaihao has devoted more than 20 years of painstaking research to breaking the traditional concept and has developed a patent that is very useful for a low-carbon economy - the “concentrating sight device of a tower solar thermal power generation system†and has applied for a patent. No. (200910155646.6) broke through the bottleneck of the tower solar thermal power generation system.
Tower-type solar thermal power generation system mainly consists of four parts: the concentrating system, absorption, heat exchange system, heat storage system and power generation system. The condenser system includes a mirror, a support structure, a transmission device, and a tracking control system. A large tower solar power station requires thousands of sets of heliostats, the cost of which accounts for more than half of the total cost of power station construction, and the transmission is the most critical and most costly part of the heliostat. The efficiency and cost of heliostats and tracking control systems largely affect the cost-effectiveness of thermal power plants and are factors that need to be considered in the construction of solar thermal power plants.
Regardless of the efficiency of the concentrating system, the heat collection efficiency, or the cost of the entire power plant, the core part of the tower solar thermal power plant is how to make the heliostats accurately track the sun's rotation and emit radiation to it. The amount of solar energy on the surface is maximized, which is an important issue in the technology of tower solar thermal power generation systems.
He Kaihao introduced that “My patent is to solve the problem of concentrated light targeting technology in the solar thermal utilization of towers. With this patented technology, only with the digital cameras or digital cameras that are widely used now can we achieve accurate concentration. Aiming.†(Method shown in Fig. 1) In order to further reduce costs, it is also possible to use a light projection mechanism to project a large amount of light to be detected to one place, and a detection device is used to detect the concentrating aim of a large number of heliostats. (Method is shown in Fig. 2) The technical scheme adopted by Ho Kaihao's patent is: a condenser light sighting device of a tower solar thermal power generation system, including a laser beam generator, a light projection mechanism and a projection drive mechanism. The laser beam generator is fixedly arranged on the solar concentrator surrounding the high tower, and is located at the rotation center of the reflector of the solar concentrator, and the laser beam generator on each solar concentrator sequentially emits the solar cooker directed at the high tower. Laser beam. The light projection mechanism and the projection drive mechanism are disposed near the optical path of the laser beam, and the light projection mechanism is composed of a projection mirror or a refraction mirror. When the laser beam generator emits the laser beam, the projection drive mechanism drives the light projection mechanism to move to the laser beam. In the light path, the laser beam is reflected or refracted by the light projection mechanism onto the inspection screen.
According to He Kaihao, the technical principle of this patent is to solve geometric problems based on the auxiliary lines in mathematics. The geometric auxiliary line is a laser beam that is directed from the center of each heliostat to the target of the concentrator. With this laser beam as an auxiliary line, it is very simple to determine whether the solar light reflected by the heliostat is aimed at the target. (Figure 2) Although the principle is very simple, it is very important for people to use ultra-large-scale solar energy at very low cost.
Compared with the previous technology, He Kaihao's condenser aiming device uses the laser beam aimed at the focused target as a standard. According to the movement of the sun, the direction of the solar reflected light and the direction of the laser beam of each solar concentrator are time-divisionally projected. In comparison, in order to change the angle of the heliostat, the reflected light of the sun is aligned with the direction of the laser beam so that the focus can be accurately focused. The concentrating aiming device has a simple structure and a clever design. The laser beam and the solar reflection light can be conveniently projected and sampled, so that the tower solar thermal power generation system no longer needs to mathematically calculate the rotation angle of the solar concentrator, thereby solving the problem. There were technical problems before.
Our country has a vast territory and complex terrain. In the past, various regions need to build towers according to specific geographical locations. If He Kaihao design method is used, there is no need to build towers based on specific geographical locations in each region. The device is simple in structure, easy to operate and low in cost. Making each heliostat into the size of a window glass can be done by installing it on the wall and roof of a building like a glass curtain wall. Through the practice under many different conditions, it has been proved that He Kaihao's invention patent made a breakthrough in the tower solar thermal power generation system, solved the existing bottleneck problems, greatly improved the power generation efficiency, reduced the cost, and The promotion and application of scale is no longer a dream.
He Kaihao's invention of a concentrator system for tower solar thermal power generation system broke through the bottleneck of tower solar thermal power generation system technology for more than 30 years, created a miracle in the history of new energy technology utilization, and developed and utilized solar energy in China. Provides a viable path. Solar energy sources are inexhaustible and are inexhaustible. The use of He Kaihao's equipment will inevitably create a new pattern for the large-scale promotion of tower-type solar thermal power generation systems in China. contribution.
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