Optimal Design For Structure Of Solar Concentration Reflector

As one of the important issues for the development of the human society, energy issues have been paid more and more attentions from all walks of life. The development and utilization of clean energy will not only solve the large demand for energy from the increasingly rapid social development, but also will maintaining a good ecological environment and achieve sustainable development. Solar energy as an inexhaustible renewable and clean energy has enormous development potential. However, although solar energy industry has developed rapidly, the efficiency of the system is still unsatisfactory. The main reasons leading to this situation is that solar collection system mainly relying on the fixed solar panels which is very expensive, and which make the cost of solar energy system using on a large area is very high. In order to solve the problem, solar concentrators have been proposed.Solar concentrator is an important component of solar energy utilization system.The large area of incident sunlight which passes through the solar concentrator will be change to a small area of emergent sunlight and shoot on the solar receiver. This property improves the conversion rate of solar energy and cut down the cost of the overall system by reducing the use of solar panel.Solar concentrator is introduced in detail in the paper. Meanwhile, the paper designed and optimized the structure of multi-mirror solar concentrating reflector, and gave a scheme of solar radiation monitor based on corner cube reflector. The details of the paper are as follows:(1) Introduced the background of solar reflectors and development potential,explained the research situation at home and abroad. And various types of solar concentrating reflectors was introduced and compared. Meanwhile, optical-related theories for designing the solar concentrating reflector in introduced.(2) Designed a kind of secondary reflections solar concentrating reflector based on planar reflections, analyzed the structure and concentrating ratio. Optimization of the system is made to achieve better concentrated effect. Introduced the operating principle of solar radiation monitor system.(3) Designed the structure of Cassegrain-type solar concentrating reflector by theory and simulation analysis. The emergent spot is shaped and the solution ispresented to eliminate the center hole of the emergent spot which is caused by the shelter from the secondary mirror.(4) Studied the solar radiation monitoring system based on corner cube reflector.Analyzed the structure of corner cube reflector and the light paths inside using ray-tracing and theoretical derivation. The relationship between the effective reflection region of corner cube reflector and the angle of the incident light got by simulation was given in the paper, and the relationship was used in the solar radiation monitoring system.