Large-scale solar heat collector with integrated heat collection and transportation and manufacturing method thereof

Abstract

The invention relates to a large-scale solar heat collector capable of integrating heat conveying and heat collection and a method for manufacturing the large-scale solar heat collector and belongs to the technical field of solar photo-thermal utilization. The large-scale solar heat collector is characterized by comprising an air channel structure supporting frame in a cage structure, wherein the sections of two ends are in an opening structure; one side face is a heat collection surface, and the rest of side faces are non-heat-collection surfaces; an air heat exchange device is arranged on the heat collection surface, and sandwiched heat-preserving air channel composite plates are arranged on the non-heat-collection surfaces; and a pipeline structure is formed by enclosing the sandwiched heat-preserving air channel composite plates and the heat collection surface. During the manufacturing of the large-scale solar heat collector, the air channel structure supporting frame is manufactured firstly, and then the sandwiched heat-preserving air channel composite plates, the air heat exchange device, a keel and the like are fixedly arranged. The invention has the advantages that: the air heat exchange device with a selective heat-absorbing coating plate absorbs solar energy; gas in the pipeline structure is heated, and hot air is generated and used for industrial and agricultural production; and the large-scale solar heat collector can have any length according to practical requirements, can integrate the heat conveying and the heat collection and provide hot water, is convenient to use, high in optical energy conversion efficiency and long in service life.

Description

technical field [0001] The invention relates to a large-scale solar heat collector with integrated transport and heat collection and a manufacturing method thereof, belonging to the technical field of solar light and heat utilization. Background technique [0002] Using solar energy as the mainstream energy for industrial and agricultural production is the ultimate ideal and inevitable way for human energy development. Traditional solar photothermal utilization devices have problems such as relatively high cost and low thermal energy conversion efficiency. In terms of photothermal applications, the highest conversion efficiency is the flat-plate collector, with a theoretical thermal efficiency of up to 80%, such as the collector with selective coating of titanium oxynitride, but this type of flat-plate collector is not suitable for large-scale heat collection projects. The unit heat conversion efficiency of a single chip is high, but the heat efficiency of the entire daylig...

AI Technical Summary

Problems solved by technology

Traditional solar thermal utilization devices have problems such as relatively high cost and low thermal energy conversion efficiency.

In terms of photothermal applications, the highest conversion efficiency is the flat-plate collector, with a theoretical thermal efficiency of up to 80%, such as the collector with selective coating of titanium oxynitride, but this type of flat-plate collector is not suitable for large-scale heat collection projects. The unit heat conversion efficiency of a single chip is high, but the heat efficiency of the entire daylighting and heat collecting area is low, the ineffective heat collecting area is too large, and there are many problems in installation and use

Images