具有自洁功能增透膜在太阳能集热管中的应用
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摘要
太阳能集热管表面沉积的污垢会直接影响到光线透光率,进而影响真空管的集热效率,本文研究采用溶胶-凝胶法,在太阳能真空集热管的外管上浸镀一种SiO_2涂层。结果表明,该涂层同时具有增透、防污浊性能,实现真空管增透与自洁功能一体化,使得玻璃罩管的透光率(在太阳光区间300nm～2600nm)可到95%。
The dirt deposited on the surface of the solar collector tube directly affects the light transmittance, and then affects the heat collection efficiency of the vacuum tube. In this paper, a SiO_2 coating was applied on the outer tube of a solar vacuum tube by sol-gel method. The results show that the coating has both anti-reflection and anti-fouling properties. The vacuum tube anti-reflection and self-cleaning functions were integrated, making the transmittance of the glass cover tube reach 96% in the sunlight range(300 nm to 2600 nm).
The dirt deposited on the surface of the solar collector tube directly affects the light transmittance, and then affects the heat collection efficiency of the vacuum tube. In this paper, a SiO_2 coating was applied on the outer tube of a solar vacuum tube by sol-gel method. The results show that the coating has both anti-reflection and anti-fouling properties. The vacuum tube anti-reflection and self-cleaning functions were integrated, making the transmittance of the glass cover tube reach 96% in the sunlight range(300 nm to 2600 nm).
引文
[1]刘希杰,张化明,杜勇.增透膜在太阳能高温集热管产业中的应用[J].太阳能,2012,(5):17-19.
[2]刘宇,雷东强.工业槽式太阳能集热管SiO2增透膜的研究[J].太阳能,2016,(6):56-60.
[2]刘宇,雷东强.工业槽式太阳能集热管SiO2增透膜的研究[J].太阳能,2016,(6):56-60.