Multi-dimensional combined adjustable CPC heat collection device

Abstract

The invention discloses a multi-dimensional combined adjustable CPC heat collection device. The multi-dimensional combined adjustable CPC heat collection device comprises a straight-through type fullglass vacuum heat collection pipe with inserting holes, curved type heat pipe vacuum heat collection pipes, a primary semi-composite paraboloid condensation plate, secondary curve type two-dimensionalparaboloid condensation plates and a double-stage adjustable angle type supporting frame device. The lower ends of the curved type heat pipe vacuum heat collection pipes are inserted into the straight-through type full glass vacuum heat collection pipe with the inserting holes. According to the CPC heat collector device, longitudinal and transverse condensation combining, two-time and one-time condensation combining, curve type heat pipe and straight-through type vacuum heat collection pipe combining, heat collector direction adjusting and light reflecting plate angle adjusting combining andother manners are adopted, and therefore on the premise of guaranteeing the sunlight receiving angle, the condensation ratio is improved to the largest degree so as to achieve high heat collection temperature, optical losses and the number of times of light reflecting plate angle adjusting are reduced, and the comprehensive heat collection efficiency of a solar heat collector is improved; and meanwhile, adjustability is high, the application range is wide, splicing and dismounting are convenient, and the cost is low.

Description

technical field [0001] The invention relates to a solar heat collecting device, in particular to a multi-dimensional, multi-stage and adjustable CPC heat collector device, which belongs to the technical field of solar energy utilization. Background technique [0002] As a clean, non-polluting renewable energy, the development and utilization of solar energy is considered an important part of the world's energy strategy. Solar water heaters have been successfully commercialized, and how to use solar energy more effectively has become the content of research by scientists from all over the world. [0003] Compound parabolic concentrator (CPC for short) is a non-imaging concentrator designed according to the principle of edge optics. In theory, the incident light within the acceptance angle range will reach the receiver directly or after reflection. For a given acceptance angle range, it can achieve the maximum concentration ratio, so it is applied in solar thermal and photovo...

AI Technical Summary

Problems solved by technology

[0004] At present, the low-temperature and middle-temperature CPC solar collectors have been popularized and applied to a certain extent. Compared with ordinary low-temperature solar collectors, the heat collection temperature and heat collection efficiency can be improved within a certain range, but the current CPC collectors are limited by their optical characteristics. , the designed concentrating ratio is low, and it is impossible to achieve a higher heat collecting temperature or the solar heat collecting efficiency is very low when operating at a higher heat collecting temperature; if a higher concentrating ratio is designed, the solar light receiving angle of the collector It will be very small, and it needs to be tracked or frequently adjusted to ensure the reception of sunlight, which loses the value and significance of the CPC collector and requires a larger reflector

The above situation has led to no obvious advantages of CPC collectors in terms of performance and cost compared with non-concentrators, which limits the popularization and application of CPC collectors

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