Evacuated Glazing with Silica Aerogel Spacers

Büttner, Bastian; Nauschütz, Josephine; Heinemann, Ulrich; Reichenauer, Gudrun; Scherdel, C.; Weinläder, Helmut; Weismann, Stephan; Buck, Doris; Beck, Andreas

doi:10.18086/eurosun2018.06.17

Cited by 5 publications

(4 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In ongoing work, we are investigating IGU designs that incorporate a thin aerogel monolith with air or other gas layers in the interspace between panes to improve insulating ability while retaining high optical transmittance. Evacuation, not employed in this study, would be expected to further improve thermal resistance [25,27,38].…”

Section: Discussionmentioning

confidence: 99%

“…Both factors render these materials unappealing for vision window glazing applications. In one approach to improve the aesthetics, Büttner et al used monolithic silica aerogel pillars within an evacuated glazing unit so that only a small area (~10%) of the window was obscured by the aerogel [38]. Another approach is to improve the optical clarity through changes in the chemical precursor recipe.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Aesthetic Aerogel Window Design for Sustainable Buildings

et al. 2022

View full text Add to dashboard Cite

Transport of heat through windows accounts for more than 25% of heating and cooling losses in residential buildings. Silica-based aerogels are translucent with extremely low thermal conductivity, which make them attractive for incorporation into the interspaces of glazing units. Widespread incorporation of monolithic-silica-aerogel-based windows could result in significant energy savings associated with the heating and cooling of buildings. However, monolithic silica aerogels do not have the optical clarity of vision glass, due to light scattering by the solid matrix, and often have surface imperfections, both of which render these materials less appealing for glazing applications. Here, we demonstrate a variety of approaches to preparing aesthetically pleasing monolithic silica aerogel by a rapid supercritical extraction method for incorporation into glazing units, including: (1) process improvements that result in monoliths with higher visible light transmission; (2) innovative mold design for the preparation of uniform aerogel monoliths; (3) glazing designs that use thinner monoliths; and (4) the incorporation of artistic effects using dyes and laser etching to prepare glazing units with mosaic- or stained-glass-like patterns in which surface imperfections are perceived as features of the design rather than flaws.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Aesthetic Aerogel Window Design for Sustainable Buildings

et al. 2022

View full text Add to dashboard Cite

show abstract

“…The presence of vacuum, conduction and convection losses are reduced while the presence of low emission coating abates the radiative heat transfer (Memon et al, 2019). Support pillars are most often stainless steel (Wilson et al, 1998) (Collins et al, 1995;Griffiths et al, 1998) made while recently transparent support pillar made from Bismuth boron glass powder (Zhao et al, 2013), translucent aerogel (Büttner et al, 2019) were also investigated. Edge sealing is a critical task for vacuum glazing to maintain the low pressure between glasses for the high durability of the system.…”

Section: Bi-facial Solar Cell-based Fipvmentioning

confidence: 99%

Fenestration integrated BIPV (FIPV): A review

Ghosh

2022

Solar Energy

View full text Add to dashboard Cite

“…On the other hand, aerogel glazing blocks the direct views from the interior to the exterior and direct incident solar radiation creates accentuated reflection and glare. Thus, to obtain lower transmission without compromising visible transmittance, insulated vacuum glazing is an option [36] [37,38] as shown in Figure 2. In a vacuum glazing, between two glass sheets, reduction of atmospheric-air mass creates a vacuum at highpressure (0.13 Pa-1.33•10−4 Pa) [39].…”

Section: Introductionmentioning

confidence: 99%

Thermal and visual comfort analysis of adaptive vacuum integrated switchable suspended particle device window for temperate climate

Nundy

Ghosh

2020

Renewable Energy

View full text Add to dashboard Cite

In this work, thermal and visual comfort of low heat loss switchable suspended particle device-vacuum (SPD-vacuum) glazing was investigated for less energy-hungry adaptive building's glazing or façade integration at temperate climate. This SPD-vacuum glazing had 38% visible transmittance in the presence of 110 V applied an alternating voltage and 2% visible transmittance in the absence of electrical power. Outdoor test cell characterisation was employed to measure the thermal and daylighting parameters of this glazing. Solar heat gain or solar factor was calculated using non calorimetric methods and varied between 0.38 (Switch OFF/opaque) to 0.51 (Switch ON/ transparent). Test cell indoor and ambient parameters (incident solar radiation and ambient temperature) were engaged for thermal comfort analysis by using PMV and PPD methods. Visual comfort was analysed from glare potential, useful daylight index, and colour properties. The comfortable thermal environment was attainable using both states of this glazing for a clear sunny day. Acceptable daylight throughout the day was possible for a clear sunny day for opaque state; however clear state offered allowable/comfortable correlated colour temperature (CCT) of 5786.18 K and colour rendering index (CRI) of 94.83.

show abstract

Evacuated Glazing with Silica Aerogel Spacers

Cited by 5 publications

References 0 publications

Aesthetic Aerogel Window Design for Sustainable Buildings

Aesthetic Aerogel Window Design for Sustainable Buildings

Fenestration integrated BIPV (FIPV): A review

Thermal and visual comfort analysis of adaptive vacuum integrated switchable suspended particle device window for temperate climate

Contact Info

Product

Resources

About