He is a common medical worker and technology dreamer of Ningbo Hospital of Traditional Chinese Medicine. He is very interested in researching solar thermal technology due to his personal hobby. He was inspired by Archimedes' story and invented a technology called "tower solar thermal power generation System of condenser targeting device ", won the national invention patents.

Tower solar thermal power system is the use of independent tracking the sun heliostat group, the sunlight gathered at the top of the receiver fixed to produce high temperature, superheated steam or produce high-temperature molten salt storage heat, and if necessary, the use of high temperature Molten salt generates steam that drives the steam turbine generator to generate electricity, which converts the solar energy into electricity.

For more than thirty years, the tower solar thermal power generation system has not yet been widely used, the main reason is that the condenser aiming technology has not been solved, due to the rising sun and the sun, different angles on the earth are not the same, the existing space Geometric calculation method is not easy to use computer programming for automatic calculation, tower solar thermal technology until now still stay in the scientific research stage.

He Kaihao this issue has aroused the attention, but in the end where to proceed with the study?

While reading through the sources, studying the principles of heliostats and tracking control systems, he remembered an Archimedes story told by a teacher in a middle school classroom.

The home of Archimedes was attacked by the Roman army 2200 years ago. The Roman army flew by the sailing warships to come and attack. Archimedes made use of the scientific principle that women and children each came to the shore of the coast with the mirrors of their own home, aimed the mirror at the strong sunlight and focused it on the main sail of the enemy ship. Thousands of noodles The reflection of the mirror gathers at a point on the sails and uses the heat generated by the accumulation of sunlight to burn distant enemy ships and force the enemy to retreat.

Is it really feasible that the story of Archimedes elicited the question of He Kaihao's mind, burning the distant enemy ships with heat from the sun's rays gathered through the mirror?

With this doubt, he spent a lot of his spare time to verify that he invented a "light-aiming aiming device for a tower-type solar thermal power generation system" and put forward a set of mathematical formulas aimed at cloudy days Or under the sun's weak conditions to calculate the orientation of the sun's rays to guide the heliostat on the angle for precise positioning.

He Kaihao invented the "tower solar thermal power generation system focusing aiming device", mainly including the laser beam generator, light projection projection mechanism and the projection drive mechanism.

He Kai-hao said that the laser beam generator is fixedly disposed on the solar concentrator around the tower and is located in the center of rotation of the reflector of the solar concentrator, the laser beam generator on each solar concentrator can in turn issue a high alignment Tower solar stove laser beam.

The light extraction projection mechanism and the projection drive mechanism are arranged near the laser beam optical path. The light extraction projection mechanism is composed of a projection mirror or a refraction mirror. When the laser beam generator emits a laser beam, the projection drive mechanism drives the light extraction projection mechanism to move to the laser Beam light path, through the light projection mechanism will be reflected or refracted laser beam to the screen. "He Kai said.

The device is simple in structure, easy to operate and low in cost. Each heliostat is made into a window glass size and can be installed on the wall and roof of a building like a glass curtain wall to collect the sunlight People serve.

Ho Kai Ho said that this method can be widely used in daily life. For example, in many underground garages, factories, warehouses and other places, barely reach the sun, only the installation of electric lights, consume a great deal. If the use of light pipe lighting, its effect has to be discounted, because the light pipe into the light into the light into the light is not much. Even with the installation of a large condensing concave mirror, there is a constant problem with the sun's position. If Ho Kai-ho method to guide the condenser concave mirror rotation, the above problems will be solved, because it can ensure that the focus of the sun always fall into the light pipe into the light port.

He Kaihao said that many units of steam generated by the boiler are used for various needs and consume a large amount of fuel. The condensing aiming device is much simpler, which can gather the sunshine of the roof and build a solar boiler, which is both environment-friendly and practical. The most widely used solar water heaters, "condensing aiming device" by using the plane mirror to reflect the nearby sunlight to the solar water heater to increase their light intensity.

"This method can effectively control the focus of the sun's light, and when the technology is mature, it can spell out a solar power station like a building block so that it can be widely used in everyday scenes to improve the efficiency of solar energy. He Kai-hao said that this has created favorable conditions for the commercialization of solar thermal power.

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