Selective solar energy tunnel for exterior wall surface

Abstract

The invention relates to a selective solar tunnel used for an external metope, consisting of a light-gathering body which can absorb thermal insulation air, a heat-absorbing plate which is arranged at the bottom of the light-gathering body, and a transparent top cover which seals the light-gathering body. Selective reflection is generated according to the difference of the solar altitude; the solar altitude is low in winter, thereby light beams are all reflected into the solar tunnel and the radiant energy of the light beams is converted into heat energy; the solar altitude is high in spring,in summer and in autumn and particularly in summer, the light beams are all reflected out of the tunnel and no heat is absorbed. The selective solar tunnel has a simple structure and low cost and hasno moving element. Various selective building elements can be conveniently and beautifully prepared by embedding a plurality of selective solar tunnels in the form of arrays into external surfaces such as building blocks, thermal insulation tiles, external wall panels and so on. A building built by application of the elements can absorb solar energy in winter, thereby the building reduces and even completely bears heating heat load; in summer, the building can be prevented from receiving solar radiation and be insulated, thereby the heat load of an air conditioner is reduced; the energy consumption of the building is greatly reduced; and the energy is saved.

Description

technical field [0001] The invention relates to the field of building energy conservation, in particular to a selective solar energy tunnel used for exterior walls. Background technique [0002] With the continuous improvement of human requirements for the living environment, building energy consumption is also showing a growing trend. Statistics from developed countries show that building energy consumption can account for 1 / 4 to 1 / 3 of the country's total energy consumption, so building energy conservation has been put on the agenda of governments and scholars in various countries. [0003] Western developed countries have carried out large-scale building energy conservation for more than 30 years. Nowadays, high-comfort and low-energy houses are relatively common, and Europe has become the region with the highest living quality and the most scientific in the world. At the same time, the content of building energy conservation in western developed countries has been const...

AI Technical Summary

Problems solved by technology

[0005] (1) The integration of solar collectors and buildings is not easy to solve. A series of issues, such as how to integrate the layout of solar collectors with the appearance of buildings, and how to realize building components, still require a lot of theoretical research and practice. explore;

[0006] (2) The cost is high. At present, solar collectors are not only made independently of building components, but also consume a large amount of metal. The resulting high cost limits the scale of solar thermal utilization;

[0007] (3) The solar collector has no selectivity for the absorption of the sun, and the overheating problem of the passive solar collector system in summer is not easy to solve, which increases the energy consumption of the building

The active system is difficult to avoid the further increase of the cost caused by the complexity of the system;

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