Glass-metal vacuum packaged one-dimensional tracking focusing solar collector

Abstract

The invention belongs to the technical field of solar-thermal power generation, and discloses a glass-metal vacuum packaged one-dimensional tracking focusing solar collector. The glass-metal vacuum packaged one-dimensional tracking focusing solar collector comprises a transparent shell; heat collection pipelines which are arranged in the shell in parallel and connected together in parallel, wherein the space among the shell and the heat collection pipelines is vacuum; and a heat absorbing fin which is closely adhered with the surface of the heat collection pipelines and used as the heat absorbing cavity of the heat collector, wherein the heat absorbing fin is in the wave shape which is matched with the heat collection pipelines, and a selectivity absorbing coating is laid on the surface of the heat absorbing fin. The solar collector is good in anti-freezing capacity, better in heat collection and exchange efficiency, longer in service life and lower in production cost.

Description

technical field [0001] The invention relates to a solar photothermal power generation system, in particular to a glass-metal vacuum-encapsulated one-dimensional tracking and focusing solar heat collector. Background technique [0002] Energy is the foundation of social development and human progress. With the continuous development of industry and the expansion of human needs, the energy situation is becoming increasingly tense, and green energy is considered to be a way to fundamentally solve human energy needs. [0003] Among them, solar energy is considered to be one of the most potential new energy sources because of its unlimited "reserves", universal distribution, cleanliness and economy. The characteristics of solar thermal power generation are good adaptability to the grid, high photoelectric conversion rate, environmental protection and adjustable, etc., so it has become an important development direction of solar energy utilization. [0004] The key to solar ther...

AI Technical Summary

Problems solved by technology

The plate collector is cost-effective, the heat absorption and heat transfer interface is relatively flat, the energy distribution is relatively uniform, there are no hot spots in the entire interface, the overall heat transfer is relatively uniform, and the service life is long. Therefore, the plate collector occupies an important position in the solar thermal field. important position, but the plate collector has poor frost resistance and is not suitable for use in northern regions

The vacuum heat collecting tube can withstand low temperature -30℃, but the damage rate of the glass pipe fittings is high, and the low temperature performance is poor. The vacuum heat collecting tube of the direct current method has the danger of bursting in summer

The efficiency of the heat pipe vacuum collector is better, but there is also the danger of the glass tube being easily broken. Therefore, there is no universal and cost-effective solar collector.

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