Sustainable reflective triple glazing design strategies: Spectral characteristics, air-conditioning cost savings, daylight factors, and payback periods

Gorantla, Kirankumar; Shaik, Saboor; Kontoleon, Karolos J.; Mazzeo, Domenico; Maduru, Venkata Ramana; Shaik, Sharmas Vali

doi:10.1016/j.jobe.2021.103089

Cited by 25 publications

(8 citation statements)

References 41 publications

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“…The payback period of TWG35 was 2.2 years. However, the lowest payback period is 2.1 years revealed by the TWG33 window glass unit with a net cost recovery of 16.55 USD/m 2 .year [48]. A multi-pane glazing unit reduces the heat transfer through it compared to a single-pane unit.…”

Section: Double Glazing Windowsmentioning

confidence: 99%

“…Figure 8 shows a triple glazing window unit with 5 mm thick reflective glasses. The total thickness of the triple-glazed window unit is 35 mm including a 10 mm air gap between two glass units [48]. 2016) studied the thermal performance of switchable triple glazing exhaust air (SEA) window and found that it reduces 73.5 and 71.9% heat gain in summer, as well as 74 and 46.8% heat loss in winter, respectively, compared to the conventional double-glazed as well as triple-glazed windows [49].…”

Section: Double Glazing Windowsmentioning

confidence: 99%

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Global Prospects, Advance Technologies and Policies of Energy-Saving and Sustainable Building Systems: A Review

et al. 2022

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Automation, modernization, economic development and global progress depends on efficient extraction and utilization of energy. Power generation by burning fossil fuels makes various adverse impacts on the environment. Additionally, the worldwide fossil fuel reserve is limited and depleting very fast. Hence, efficient energy usage and savings are crucial to address the environmental issues to ensure sustainable development. Buildings, both commercial and residential, represent a major energy consumption sector. Approximately 40% of the total energy is reportedly consumed in the building sector. Worldwide building energy consumption, performance measuring systems and best practices, energy-saving techniques and policies are reviewed and summarized in this article. Underfloor air distribution, double-glazed windows, use of highly efficient electric motors and variable speed drives may play a great role in reducing building energy consumption. In the UK, the application of double-glazed windows in commercial buildings can save 39–53% energy. The proper maintenance of a building’s central heating system can save up to 11% energy. The automatic HVAC control system can reduce up to 20% of the building’s total heating load. Proper utilization of a VSD system in motor and building performance optimization by an ANOVA tool also proved instrumental in saving energy. Apart from this, the building codes of different countries also help to improve building performance by reducing energy consumption. This study will help building researchers and policymakers to make a framework for sustainable, green building.

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Section: Double Glazing Windowsmentioning

confidence: 99%

Section: Double Glazing Windowsmentioning

confidence: 99%

Global Prospects, Advance Technologies and Policies of Energy-Saving and Sustainable Building Systems: A Review

et al. 2022

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“…Multilayer, vacuum, polymer disperse, thermochromic, or phase change materials (PCMs) employed in glazing are still leading as a traditional fenestration system for indoor thermal comfort. 5 − 8 …”

Section: Introductionmentioning

confidence: 99%

“…By varying the window size and orientation, natural light and heat flow through a window can be controlled. Multilayer, vacuum, polymer disperse, thermochromic, or phase change materials (PCMs) employed in glazing are still leading as a traditional fenestration system for indoor thermal comfort. − …”

Section: Introductionmentioning

confidence: 99%

Synergistic Effect of Paraffin-Incorporated In₂O₃/ZnO Multifold Smart Glazing Composite for the Self-Cleaning and Energy-Saving Built Environment

Roy

Ullah

Alzahrani

et al. 2022

ACS Sustainable Chem. Eng.

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The thermal performance of window glazing requires improvement for a sustainable built environment at an acceptable cost. The current work demonstrates a multifold smart composite consisting of an optimized In 2 O 3 /ZnO–polymethyl methacrylate–paraffin composite to reduce heat exchange through the combined self-cleaning and energy-saving envelope of the smart built environment. This work has attempted to develop a smart composite coating that combines photosensitive metal oxide and phase change materials and investigate their thermal comfort performance as a glazed window. It is observed that the In 2 O 3 /ZnO (5 wt %) multifold composite film experienced better transmittance and thermal performance compared to its other wt % composite samples. Moreover, the multifold composite-coated glass integrated into a prototype glazed window was further investigated for its thermal performance, where a steady average indoor temperature of ∼30 °C was achieved when the outside temperature reached ∼55 °C, while maintaining good visibility. Interestingly, the transparency reached ∼86% at 60 °C and exhibited a hydrophobic water contact angle (WCA) of ∼138°. In contrast, a similar film exhibits ∼64% transparency at 22 °C, where the WCA becomes moderately hydrophilic (∼68°). Temperature dependency on transparency and wettability properties was examined for up to 60 cycles, resulting in excellent indoor thermal comfort. In addition, a thermal simulation study was executed for the smart multifold glazing composite. Moreover, this study offers dynamic glazing development options for energy saving in the smart built environment.

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“…For this reason, the constant value in the original Nusselt number correlations was changed to more accurately account for the effect of asymmetrically heated windows. This important difference in the boundary condition was also considered in [15,16] and values of Nusselt numbers were suggested for symmetrically and asymmetrically heated parallel planes with uniform surface temperatures. The Nusselt number for panes with asymmetric surface temperatures is about 1.9 times lower than for panes with the same surface temperatures [12].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Heat Transfer Rates through Transparent Dividing Structures

et al. 2022

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In this paper, heat transfer and airflow in the gap between the panes of a central part of a double-glazed window were investigated using mathematical modeling. It has been shown that the cyclical airflow regime, in the form of ascending and descending boundary layers, loses stability and changes to a vortex regime under certain conditions depending on the gap width, transverse temperature gradient, inclination angle and window height, as in Rayleigh–Bernard convection cells. The study made it possible to determine the critical values of the Rayleigh number (Ra) at which the air flow regime in the gap between the panes of a window changes (in the range of values 6.07 × 103 < Ra < 6.7 × 103). As a result of the modeling, the values of the thermal resistance of a central part of double-glazed window were determined as a function of the width of the gap between the panes, the angle of inclination and the transverse temperature gradient.

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Sustainable reflective triple glazing design strategies: Spectral characteristics, air-conditioning cost savings, daylight factors, and payback periods

Cited by 25 publications

References 41 publications

Global Prospects, Advance Technologies and Policies of Energy-Saving and Sustainable Building Systems: A Review

Global Prospects, Advance Technologies and Policies of Energy-Saving and Sustainable Building Systems: A Review

Synergistic Effect of Paraffin-Incorporated In₂O₃/ZnO Multifold Smart Glazing Composite for the Self-Cleaning and Energy-Saving Built Environment

Evaluation of Heat Transfer Rates through Transparent Dividing Structures

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Sustainable reflective triple glazing design strategies: Spectral characteristics, air-conditioning cost savings, daylight factors, and payback periods

Cited by 25 publications

References 41 publications

Global Prospects, Advance Technologies and Policies of Energy-Saving and Sustainable Building Systems: A Review

Global Prospects, Advance Technologies and Policies of Energy-Saving and Sustainable Building Systems: A Review

Synergistic Effect of Paraffin-Incorporated In2O3/ZnO Multifold Smart Glazing Composite for the Self-Cleaning and Energy-Saving Built Environment

Evaluation of Heat Transfer Rates through Transparent Dividing Structures

Contact Info

Product

Resources

About

Synergistic Effect of Paraffin-Incorporated In₂O₃/ZnO Multifold Smart Glazing Composite for the Self-Cleaning and Energy-Saving Built Environment