Photo-thermal photovoltaic coupling energy-supply free-tracking solar condenser

Abstract

The invention belongs to the technical field of solar condensation and heat utilization, and particularly relates to a photo-thermal photovoltaic coupling energy-supply free-tracking solar condenser. The condenser comprises a groove-type composite multi-curved-surface solar condenser, solar cell modules, a glass cover plate, a glass vacuum tube and a straight-through tube, wherein the straight-through tube is arranged in the glass vacuum tube as a receiving body. The groove-type composite multi-curved-surface solar condenser focuses sunlight incident into the condenser into the glass vacuum tube positioned in the focal spot position inside the condenser, so that spot light heat emission is realized; the sunlight not received by the glass vacuum tube is reflected to the solar cell modules positioned on the inner side of the glass cover plate, so that spot light electricity generation is realized; and meanwhile, two solar cell modules are arranged back-to-back in an up-and-down staggered mode to form a hot air channel, a micro heat exchange channel is formed between two plate backs, so that heat generated when the solar cell modules work is conveniently taken away by air in the micro heat exchange channel, and frost on the surface of the glass cover plate is melted, so that the effect of defrosting is achieved.

Description

technical field [0001] The invention relates to a solar concentrator, in particular to a photothermal photovoltaic coupling energy supply tracking-free solar concentrator, which belongs to the technical field of solar concentrator and photothermal photovoltaic applications. Background technique [0002] The use of solar concentrating technology can effectively overcome the shortcomings of the low grade of collected energy. On the one hand, it improves the energy flow density on the surface of the receiver, which is one of the prerequisites for the efficient application of solar thermal and photovoltaic technologies; on the other hand, it makes solar energy collection devices The heat dissipation area is smaller than the heat collection area, which is beneficial for improving the efficiency of solar heat utilization. [0003] However, most solar concentrators require high tracking accuracy and need to track the sun in real time, which increases the construction cost, maintena...

AI Technical Summary

Problems solved by technology

[0003] However, most solar concentrators require high tracking accuracy and need to track the sun in real time, which increases the construction cost, maintenance cost and total power consumption of the solar concentrator utilization system

Although tracking-free solar concentrators have the characteristics of large receiving half-angle, no moving parts, simple installation of heat exchange pipelines, low requirements for electric energy and other infrastructure, and are suitable for medium and low temperature applications, the output energy stability is poor within a one-year working cycle. , and only in a certain period of time has good solar energy utilization efficiency, and the type of external output energy is single

For the important form of solar energy utilization - solar concentrating photothermal utilization technology, it is mainly used in building heating, inter-seasonal heat storage, material drying and other fields. There is system operation during heating period, and non-heating period (such as no heating in summer) The system is idle, and at the same time, it is impossible to achieve efficient coupling with solar photovoltaic power generation technology on the same appliance

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