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Effect of SiO2/B2O3 ratio on the property of borosilicate glass applied in parabolic trough solar power plant

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Abstract

This work aimed to analyze the glass material used for sealing the end of a thermal collector in a parabolic trough solar power plant. Based on matched sealing requirements and application performance of glass and Kovar alloy 4J29, one borosilicate glass material (GD480S), whose expansion coefficient was similar to that of Kovar alloy 4J29, was studied. Moreover, the effect of the ratio of SiO2 to B2O3 on the glass properties was explored in detail by Fourier transform infrared spectroscopy. As the SiO2 to B2O3 ratio in the glass increased from 4.18 to 5.77, the expansion coefficient showed a decreasing trend from 4.95×10−6/°C to 4.55×10−6/°C. In addition, the water resistance performance improved, enabling the glass material to seal well with the alloy for application in a trough solar power plant. Thus, the increase in the SiO2 to B2O3 ratio made the glass structure more compact and improved the glass performance to meet the requirements of an industrial tubular receiver.

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Correspondence to Ping Lu  (陆平).

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Funded by the Special Projects of Major Scientific and Technological Achievements of Hebei Province(No.13041110Z)

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Tian, Y., Shao, Y., Lu, P. et al. Effect of SiO2/B2O3 ratio on the property of borosilicate glass applied in parabolic trough solar power plant. J. Wuhan Univ. Technol.-Mat. Sci. Edit. 30, 51–55 (2015). https://doi.org/10.1007/s11595-015-1099-4

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  • DOI: https://doi.org/10.1007/s11595-015-1099-4

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