Advances in the Standards & Applied Sciences

Advances in the Standards & Applied Sciences

From Efficiency to Sustainability: A Review of Low-Emission Glass

Document Type : Review Article

Author
Technology and Engineering Research Center, Standard Research Institute (SRI),
Abstract
Low-emission (low-E) glass is an energy-efficient glazing technology developed to minimize heat transfer while maximizing visible light transmittance. By employing nano-thin coatings of metallic oxides, low-E glass reduces energy consumption in buildings by up to 50%, playing a pivotal role in addressing climate goals and improving thermal comfort. Evolving from basic coatings introduced during the 1970s energy crisis, low-E glass now incorporates advanced soft and hard coat technologies, enhanced by nanotechnology for superior performance, durability, and multifunctionality.
This paper reviews the historical development, coating technologies, and environmental benefits of low-E glass, emphasizing its contribution to energy savings, carbon footprint reduction, and compliance with global sustainability standards like LEED and BREEAM. It also explores challenges such as high production costs, recycling complexities, and limited adoption in emerging markets. Future opportunities include cost-efficient manufacturing, enhanced recyclability, and integration with renewable energy systems and smart technologies. Low-E glass stands as a cornerstone of sustainable construction, offering significant potential for expansion across sectors including automotive and solar energy.
Keywords
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[1] N. Abundiz-Cisneros , R. Sangines , R. Rodriguez-Lopez , M. Peralta-Arriola , J. Cruz , R. Machorro, “Novel Low-E filter for architectural glass pane” Energy & Buildings, Volume 206,  2020, 10955
[2] M. Arbab, “Sputter-Deposited Low-Emissivity Coatings on Glass”, MRS Bulletin. 1997, 22(9):27-35.
[3] J.Karlsson, A.Roos, “Annual energy window performance vs. glazing thermal emittance-The relevance of very low emittance values”, Thin Solid Films, 2001, 392, 345–348
[4] L. Yunos, M.L. Jane, P. J. Murphy, K. Zuber, “Frequency selective surface on low emissivity windows as a means of improving telecommunication signal transmission: A review”, Journal of Building Engineering, 70, 2023, 106416

[5] W. Zhang, L. Lu, J. Peng, A. Song, “Comparison of the overall energy performance of semi-transparent photovoltaic windows and common energy-efficient windows in Hong Kong”, Energy and Buildings, Volume 128, 2016, Pages 511-518

[6] T. Chow, C. Li, Z. Lin, “Innovative solar windows for cooling-demand climate”, Solar Energy Materials & Solar Cells, 94, 2010, 212–220 

[7] B. P. Jelleab, S. E. Kalnæsa, T. Gao, “Low-Emissivity Materials for Building Applications: A State-of-the-Art Review and Future Research Perspectives”, Energy and Buildings, Volume 96, 2015, 329-356

[8] M. Arbab, J. J. Finley, “Glass in Architecture”, International Journal of Applied Glass Science, 2010, 118–129.
[9] J. Rissman, H. Kennan, “Low-Emissivity Windows, Case Studies on the Government’s Role in Energy Technology Innovation” American Innovation council, 2013.
[10] Changyu Qiu, Hongxing Yang, Weilong Zhang, “Investigation on the energy performance of a novel semi-transparent BIPV system integrated with vacuum glazing”, Building Simulation, , 12(1), 2019, 29-39.
[11] A. Grosjean, E. L. Baron, “Longtime solar performance estimations of low-E glass depending on local atmospheric conditions”, Solar Energy Materials & Solar Cells, 240, 2022, 111730
[12] Z. Jastananyah, H. M. Kamar, A.Alansari, H. A. Garalleh, “A comparative analysis of standard and nanostructured glass for enhancing heat transfer and reducing energy consumption using metal and oxide nanoparticles: A review”, Sustainability, 15(12), 2023, 9221
[13] A. R. Abdin, A, R. Bakery, M. A. Mohamed, “The role of nanotechnology in improving the efficiency of energy use with a special reference to glass treated with nanotechnology in office building” Ain shams engineering journal, vol.9, 4, 2018, 2671-2682
[14] R. J. Martin-Palma, R. Gago, M. Vinnichenko, J. M. Martinez-Duart, “In-depth optical and structural study of silver-based low-emissivity multilayer coatings for energy-saving applications”, J. Phys. D: Appl. Phys. 37, 2004, 1554–1557
[15] S. Huang, Z. Wang, J. Xu, L. Wang, D. Lu, T. Yuan, “Simulation of the spectra and determination of the optical constants of online low-emission glass from visible to mid-infrared region”, Thin Solid Films, 517, 2009, 2963–2967
[16] Mike Swinton, Marianne Manning, Hakim Elmahdy, Anil Parekh, Chris Barry, Frank Szadkowski, “Field Assessment of the Effect of Different Spectrally Selective Low Emissivity Glass Coatings on the Energy Consumption in Residential Application in Cold Climates”, 11th Canadian Conference on Building Science and Technology Banff, Alberta, 2007
[17] S. Amirkhani, A. Bahadori-Jahromi, A. Mylona, P. Godfrey, D. Cook, “Impact of Low-E Window Films on Energy Consumption and CO2 Emissions of an Existing UK Hotel Building”, Sustainability, 11, 2019, 4265

[18] C. Curcija, H. Goudey, R. Mitchell, L. Manes, S. Selkowitz, “Liquid-Applied Absorbing Solar Control Window Film Retrofit”, Lawrence Berkeley National Laboratory: Berkeley, CA, USA, 2014.

[19] www.markwideresearch.com, Global low emissivity coated glass market analysis-industry size, share, research report, insights, statistics, trends, growth and forecast 2024-2032 
[20] www.alliedmarketresearch.com, Low E glass market size, share, competitive landscape, and trend analysis by end-user industry: global opportunity analysis and industry forecast2023-2032
[21] ISO 9050:2003, Glass in building- Determination of light transmittance, solar direct transmittance, total solar energy transmittance, ultraviolet transmittance and related glazing factors
[22] EN 12898: 2019, Glass in building- Determination of the emissivity
[23] EN 673: 2011, Glass in building- Determination of thermal transmittance (U value) - Calculation method
[24] EN 1096, Glass in building-Coated glass
[25] EU Energy Performance of Buildings Directive (EPBD), https://energy.ec.europa.eu/topics/energy-efficiency/energy-efficient-buildings/energy-performance-buildings-directive-en 
[26] ASTM E 1980: 2019, Standard Practice for Calculating Solar Reflectance Index of Horizontal and Low-Sloped Opaque Surfaces
[27] ASTM C1376: 2021, Standard Specification for Pyrolytic and Vacuum Deposition Coatings on Flat Glass
[28] ASHRAE 90.1, Standard 90.1:2022, Energy Standard for Sites and Buildings Except Low-Rise Residential Buildings
[30] Tin-tai Chow, Chunying Li, Zhang Lin, “Innovative solar windows for cooling-demand climate”, Solar Energy Materials and Solar Cells,Volume 94, Issue 2, 2010, 212-220

[31] M. Nur-E-Alam, M. Vasiliev, B, Kar Yap, M, Aminul Islam, Y, Fouad, T. Sieh Kiong, “Design, fabrication, and physical properties analysis of laminated Low-E coated glass for retrofit window solutions”, Energy and Buildings, Volume 318, 2024, 114427