Thermal model validation of an electric-driven smart window through experimental data and evaluation of the impact on a case study

Ciampi, Giovanni; Scorpio, Michelangelo; Spanodimitriou, Yorgos; Rosato, Antonio; Sibilio, Sergio

doi:10.1016/j.buildenv.2020.107134

Cited by 20 publications

(8 citation statements)

References 35 publications

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“…According to [12,75], the energy comparison between the proposed case (PC) and the reference case (RC) has been carried out considering the non-renewable primary energy consumption through the index PES (non-renewable primary energy saving):…”

Section: Energy Analyses: Methodsmentioning

confidence: 99%

“…Therefore, in the Italian scenario, the improvement of the energetic performances of the existing building envelope represents a crucial aspect in the increasing of the building's energy efficiency and the indoor environmental quality on a large-scale [6]. In this context, different products and systems have been proposed to improve the buildings energy efficiency, visual and thermal comfort, as well as their sustainability [7][8][9][10][11][12] and, in recent years, the interest of the scientific community has seen an increase in the facade domain to improve the overall building energy efficiency [13]. In particular, the use of passive systems is raising more and more interest in the building sector [7,8,14].…”

Section: Introductionmentioning

confidence: 99%

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Energy Performances Assessment of Extruded and 3D Printed Polymers Integrated into Building Envelopes for a South Italian Case Study

et al. 2021

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Plastic materials are increasingly becoming used in the building envelope, despite a lack of investigation on their effects. In this work, an extruded Acrylonitrile-Butadiene-Styrene panel has been tested as a second-skin layer in a ventilated facade system using a full-scale facility. The experimental results show that it is possible to achieve performances very similar to conventional materials. A numerical model has then been developed and used to investigate the performances of plastic and composite polymer panels as second-skin layers. The experimental data has been used to verify the behavior of the numerical model, from a thermal point of view, showing good reliability, with a root mean square error lower than 0.40 °C. This model has then been applied in different refurbishment cases upon varying: the polymer and the manufacturing technology (extruded or 3D-printed panels). Eight refurbishment case studies have been carried out on a typical office building located in Napoli (Italy), by means of a dynamic simulation software. The simulation results show that the proposed actions allow the reduction of the thermal and cooling energy demand (up to 6.9% and 3.1%, respectively), as well as the non-renewable primary energy consumption (up to 2.6%), in comparison to the reference case study.

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Section: Energy Analyses: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Energy Performances Assessment of Extruded and 3D Printed Polymers Integrated into Building Envelopes for a South Italian Case Study

et al. 2021

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“…[5,7,8] Moreover, the windows will cause 30% of interior energy loss in winter. [9][10][11][12] Most of the studies on energy-saving windows are focused on chromogenic technologies, including thermotropic, [10,11,13,14] electrochromic [11,15,16] as well as photochromic, [12,17,18] which can change the transmittance of color in response to external stimuli such as heat, electricity, and light. [6,8,[19][20][21][22] Among three, thermotropic smart windows with cost-effective, rational stimulus and zero energy input properties, which endowed the thermotropic materials including hydrogels and liquid crystals become the most popular among the three kinds of materials.…”

Section: Introductionmentioning

confidence: 99%

Energy Saving and Energy Generation Smart Window with Active Control and Antifreezing Functions

Niu

Zhou

et al. 2022

Advanced Science

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Windows are the least energy efficient part of the buildings, as building accounts for 40% of global energy consumption. Traditional smart windows can only regulate solar transmission, while all the solar energy on the window is wasted. Here, for the first time, the authors demonstrate an energy saving and energy generation integrated smart window (ESEG smart window) in a simple way by combining louver structure solar cell, thermotropic hydrogel, and indium tin oxides (ITO) glass. The ESEG smart window can achieve excellent optical properties with ≈90% luminous transmission and ≈54% solar modulation, which endows excellent energy saving performance. The outstanding photoelectric conversion efficiency (18.24%) of silicon solar cells with louver structure gives the smart window excellent energy generation ability, which is more than 100% higher than previously reported energy generation smart window. In addition, the solar cell can provide electricity to for ITO glass to turn the transmittance of hydrogel actively, as well as the effect of antifreezing. This work offers an insight into the design and preparation together with a disruptive strategy of easy fabrication, good uniformity, and scalability, which opens a new avenue to realize energy storage, energy saving, active control, and antifreezing integration in one device.

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“…Large glazed windows and facades are widely used in contemporary architecture to enhance aesthetics and maximise the benefits of view and daylight availability [1,2]. However, large glazing areas in the building envelope can lead to significant heat gains and losses that can impact the building energy consumption [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Experimental characterisation of a smart glazing with tuneable transparency, light scattering ability and electricity generation function

Liu

2021

Applied Energy

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Thermal model validation of an electric-driven smart window through experimental data and evaluation of the impact on a case study

Cited by 20 publications

References 35 publications

Energy Performances Assessment of Extruded and 3D Printed Polymers Integrated into Building Envelopes for a South Italian Case Study

Energy Performances Assessment of Extruded and 3D Printed Polymers Integrated into Building Envelopes for a South Italian Case Study

Energy Saving and Energy Generation Smart Window with Active Control and Antifreezing Functions

Experimental characterisation of a smart glazing with tuneable transparency, light scattering ability and electricity generation function

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