Reverse design method of three-dimensional condenser taking energy flow distribution of receiving surface as target

Abstract

The invention relates to a reverse design method of a three-dimensional condenser taking energy flow distribution of a receiving surface as a target, belongs to the technical field of solar energy utilization and optical engineering, solves the problem that the design of the three-dimensional asymmetric free-form surface optical path system has many limitations by adopting a generalized solution.The method specifically comprises the following steps: S1, establishing an energy mapping relationship to obtain discrete point data of a transmitting source / receiving surface; s2, constructing an initial surface structure of the free-form surface condenser by using the discrete point data; s3, acquiring the actual receiving surface energy flow density by adopting a ray tracing simulation method;s4, establishing an evaluation function; s5, judging whether the evaluation parameter MF meets the requirement or not, and if MF is smaller than or equal to 0.001, ending the design and outputting anoptimal solution of the surface structure; otherwise, establishing a feedback iterative relational expression, solving the new target energy flow density, and substituting the new target energy flow density into the S1 for continuous execution. The method is high in design flexibility, automatic in closed-loop solving, free of complex operation, high in design accuracy and high in solving speed.

Description

technical field [0001] The invention belongs to the technical field of solar energy utilization and optical engineering, and in particular relates to a reverse design method of a three-dimensional concentrator aiming at energy flow distribution on a receiving surface. Background technique [0002] The energy of the sun is inexhaustible and inexhaustible, and its efficient utilization has received extensive attention in recent years. The solar concentrator concentrates low-power solar radiation on a small-area receiving surface. When used for heat conversion, it can increase the heat transfer temperature and the rear-end thermal work efficiency. When used in a concentrating photovoltaic system, it can greatly improve the conversion efficiency. The former requires high concentration. Specific energy flow, the latter requires the uniformity of energy flow distribution. [0003] With the continuous development of processing and manufacturing technology, the concentrator system ...

AI Technical Summary

Problems solved by technology

[0004] The design of the three-dimensional asymmetric free-form surface optical path system has developed rapidly in the field of optical engineering in recent years, but it is still a difficult problem in the world, and the general solution has caused many restrictions on its design

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