Optical and thermal performance analysis of aerogel glazing technology in a commercial building of Hong Kong

Leung, Chi Kin Randolph; Lü, Lin; Liu, Y.; Cheng, Haiming; Tse, Jeff H.

doi:10.1016/j.enbenv.2020.02.001

Cited by 38 publications

(14 citation statements)

References 23 publications

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“…The single glazing unit (W01 in Figure 6) and double glazing air filled (W02 in Figure 7) recorded U-values of 5.15 W/m 2 •K and 5.52 W/m 2 •K, respectively. These values show a contrast to previously described values of 5.80 W/m 2 •K and 3.0 W/m 2 •K presented by (Leung et al, 2020) and (Schultz and Jensen, 2008).…”

Section: Thermal Transmittance (U-value) Analysiscontrasting

confidence: 99%

Thermal Transmittance (U-value) Evaluation of Innovative Window Technologies

Aguilar-Santana

Velasco-Carrasco

Riffat

2020

Future Cities and Environment

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Section: Thermal Transmittance (U-value) Analysiscontrasting

confidence: 99%

Thermal Transmittance (U-value) Evaluation of Innovative Window Technologies

Aguilar-Santana

Velasco-Carrasco

Riffat

2020

Future Cities and Environment

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“…There is also a correlation between transmittance and SHGC. SHGC is increased with the increase of transmittance [21]. Table 2 presents the optical and thermal properties of aerogel glazing system.…”

Section: Properties Of Aerogelmentioning

confidence: 99%

“…Leung et al [21] analyzed nine aerogel glazing systems for evaluating the optical properties and thermal performance for the window. Aerogel glazing can bring up to 57% reduction in heat gains for windows, and it also reduces 8.5% cooling energy consumption of the building.…”

Section: Introductionmentioning

confidence: 99%

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Experimental and CFD Investigation on the Application for Aerogel Insulation in Buildings

et al. 2021

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Reducing building energy consumption is a significant challenge and is one of the most important research areas worldwide. Insulation will help to keep the building’s desired temperature by reducing the heat flow. Additionally, proper insulation can provide an extended period of comfort, leading to reduced building energy requirements. Encapsulated air is the major aspect of most thermal insulation materials. Low thermal conductivity is a good characteristic of thermal insulation materials. Aerogel has low thermal conductivity, so it is suitable for glazing and insulation purposes. This research paper investigates the effectiveness of aerogel as an insulation material in buildings by incorporating a translucent aerogel-glazing system in the window and aerogel insulation in the wall of a building. Experimental investigation of a 10 mm thick aerogel blanket surrounded box was conducted to assess its performance. Additionally, a CFD simulation was conducted, and the results of temperature degradation for the wall showed good agreement with experimental results. Additionally, the CFD simulation of temperature decay was compared between the aerogel-glazed window and argon-glazed window. It was found that the aerogel-glazed window has slower temperature decay compared to the argon-glazed window. The results showed that integrating aerogel in the glazing system and wall insulation in a building has the potential to reduce the building’s energy consumption. Moreover, a numeric simulation was conducted, and showed that the building’s annual energy consumption is reduced by 6% with the use of aerogel insulation compared to fiberglass.

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“…It was revealed that the mixed-mode ventilation and insulated walls could effectively reduce HVAC loads. The impact of aerogel glazing on the thermal performance of a 40-story commercial building was studied, and it was indicated that the proposed glazing could conserve 8.5% of cooling energy compared to double glazing [15]. Huang et al investigated several insulation materials in an office building to find the optimal material and thickness in terms of cost and energy saving, showing that an optimal insulation material can reduce the heating load by 18% compared to an uninsulated wall [16].…”

Section: Introductionmentioning

confidence: 99%

Modeling Nearly Zero Energy Buildings for Sustainable Development in Rural Areas

et al. 2020

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The energy performance of buildings and energy-saving measures have been widely investigated in recent years. However, little attention has been paid to buildings located in rural areas. The aim of this study is to assess the energy performance of two-story residential buildings located in the mountainous village of Palangan in Iran and to evaluate the impact of multiple parameters, namely building orientation, window-to-wall ratio (WWR), glazing type, shading devices, and insulation, on its energy performance. To attain a nearly zero energy building design in rural areas, the building is equipped with photovoltaic modules. The proposed building design is then economically evaluated to ensure its viability. The findings indicate that an energy saving of 29% can be achieved compared to conventional buildings, and over 22 MWh of electricity can be produced on an annual basis. The payback period is assessed at 21.7 years. However, energy subsidies are projected to be eliminated in the near future, which in turn may reduce the payback period.

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Optical and thermal performance analysis of aerogel glazing technology in a commercial building of Hong Kong

Cited by 38 publications

References 23 publications

Thermal Transmittance (U-value) Evaluation of Innovative Window Technologies

Thermal Transmittance (U-value) Evaluation of Innovative Window Technologies

Experimental and CFD Investigation on the Application for Aerogel Insulation in Buildings

Modeling Nearly Zero Energy Buildings for Sustainable Development in Rural Areas

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