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

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.

Keywords

trough solar power plant / borosilicate glass / component and property / FTIR

References

[1] Fernandez G A, Zarza E, Valenzuela L, . Parabolic-trough Solar Collectors and Their Applications [J]. Renewable and Sustainable Energy Reviews, 2010, 14(7): 1 695-1 721.

[2] Li H P Accelerating the Development of Solar Thermal Power Generation Technology [J]. High-Technology & Industrialization, 2008, 11: 27-30.

[3] Wu J F, Fang B Z, Xu X H, . Study on Thermal Shock Resistance of Al₂O₃-ZrO₂ Thermal Storage Ceramics for Solar Thermal Power Generation[J]. Journal of Wuhan University of Technology, 2013, 35(1): 7-12.

[4] Mirunalini T, Hamzawy E M A A Review of Solar Thermal Technologies[J]. Renewable and Sustainable Energy Reviews, 2010, 14: 312-322.

[5] Pask J A From Technology to the Science of Glass/Metal and Ceramic/Metal Sealing[J]. Ceram. Bull., 1987, 66(11): 1 587-1 592.

[6] Wallis G Direct-current Polarization during Field-assisted Glass-metal Sealing[J]. J. Am. Ceram. Soc., 1970, 53: 563-567.

[7] Kuo C S, Cheng P Y, Chou C P Matched Glass-to-Kovar Seals in N₂ and Ar Atmospheres[J]. International Journal of Minerals, Metallurgy and Materials, 2013, 9(20): 874-882.

[8] Liu X L, Zhang X T, Liu R, et al. A New Type of High Temperature Solar Thermal Collectors Sealing Method of Metal and Glass [P]. CN 101798184 B, China 2012. 09. 05

[9] Gong G J, Huang X Y, Wang J, . An Optimized Model and Test of the China First High Temperature Parabolic Trough Solar Receiver[J]. Solar Energy, 2010, 84: 2 230-2 245.

[10] Luo D W, Shen Z S Wetting and Spreading Behavior of Borosilicate Glass on Kovar[J]. Journal of Alloys and Compounds, 2009, 477: 407-413.

[11] Dell W J, Bray P J, Xiao S Z 11B NMR Studies and Structural Modeling of Na₂O-B₂O₃-SiO₂ Glasses of High Soda Content [J]. J. Non-Cryst. Solids, 1983, 58: 1-16.

[12] Rada S, Culea M, Culea E Structure of TeO₂·B₂O₃ Glasses Inferred from Infrared Spectroscopy and DFT Calculations[J]. Journal of Noncrystalline Solids, 2008, 354(52–54): 5 491-5 495.

[13] Elegili K Infrared Studies of Na₂O-B₂O₃-SiO₂ and Al₂O₃-Na₂O-B₂O₃-SiO₂ Glasses[J]. Physical B, 2003 340-348.

[14] Mahadevan S, Giridhar A, Singh A K Calorimetric Measurements on As-Sb-Se Glasses[J]. Journal of Non-Crystalline Solids, 1986, 88: 11-34.

[15] Kashif I, Soliman A A, Farouk H Effect of Copper Addition on Density and Magnetic Susceptibility of Lithium Borate Glasses[J]. Physical B, 2008, 493: 3 903-3 906.

[16] Damrawi G E, Muller-Warmuth W, Doweidar H, . ¹¹B, ²⁹Si and ²⁷Al Nuclear Magnetic Resonance Studies of Na₂O-Al₂O₃-B₂O₃-SiO₂ Glasses[J]. Phys. Chem. Glasses, 1993, 34: 52-57.

[17] Hiroshi Y, Hidetake Y, Keishi N Nuclear Magnetic Resonance Studies of Alkaline Earth Phoshphosilicate and Aluminoborosilicate Gasses[J]. Journal of Non-Crystalline Solids, 2000, 270: 48-59.

[18] Wan J P, Cheng J S, Lu P Effect of Al₂O₃ on the Thermal Expansion and Phase Separation of Borosilicate Glass[J]. Joural of the Chinese Ceramic Society, 2008, 36(4): 544-551.

[19] Gerasimov V V, Spirina O V Coordination State of Boron and Aluminum in Low-Alkali Aluminoborosilicate Glasses[J]. Glass and Ceramics, 2004, 61: 5-6.