Aerogel Insulation for Building Applications

Jelle, Bjørn Petter; Bætens, Ruben; Gustavsen, Arild

doi:10.1002/9783527670819.ch45

Cited by 42 publications

(38 citation statements)

References 74 publications

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“…"Future solar cell materials may also be envisioned as thin laminate or paint layers, hence also enabling application by paint brush or spray" [7]. A development towards higher solar cell efficiencies and building envelopes utilizing building integrated photovoltaics, smart window technologies [7,57,[101][102][103][104][105][139][140][141], better thermal insulation [44,[193][194][195][196][197][198][199][200], low-emissivity materials [201] and phase change materials [202], among others, may increase the energy efficiency and shorten the payback time of buildings and their applied technologies. We may end this with the following vision from Richard Lunt at Michigan State University: "Ultimately, we want to make solar harvesting surfaces that you don't even know are there."…”

Section: Discussionmentioning

confidence: 99%

Building Integrated Photovoltaics: A Concise Description of the Current State of the Art and Possible Research Pathways

Jelle

2015

Energies

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Abstract:Building integrated photovoltaics (BIPV) offer an aesthetical, economical and technical solution to integrate solar cells harvesting solar radiation to produce electricity within the climate envelopes of buildings. Photovoltaic (PV) cells may be mounted above or onto the existing or traditional roofing or wall systems. However, BIPV systems replace the outer building envelope skin, i.e., the climate screen, hence serving simultanously as both a climate screen and a power source generating electricity. Thus, BIPV may provide savings in materials and labor, in addition to reducing the electricity costs. Hence, for the BIPV products, in addition to specific requirements put on the solar cell technology, it is of major importance to have satisfactory or strict requirements of rain tightness and durability, where building physical issues like e.g., heat and moisture transport in the building envelope also have to be considered and accounted for. This work, from both a technological and scientific point of view, summarizes briefly the current state-of-the-art of BIPV, including both BIPV foil, tiles, modules and solar cell glazing products, and addresses possible research pathways for BIPV in the years to come.

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Section: Discussionmentioning

confidence: 99%

Building Integrated Photovoltaics: A Concise Description of the Current State of the Art and Possible Research Pathways

Jelle

2015

Energies

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“…The relationship between absorbance (A), transmittance (T), and reflectance (R). [80] This figure is available in colour online at wileyonlinelibrary.com/journal/pat 30,000-300,000 Microwave 300,000-1,000,000,000 Figure 3. The curves of the absorption coefficient (α) versus photon energy (hυ) of the N,N′-Dipentyl-3,4,9,10-perylenedicarboximide small molecule for different molarities.…”

Section: Resultsmentioning

confidence: 97%

“…The amount of these radiation absorbed, transmitted, and reflected varies depending on the optical properties of the material such as the wavelength (λ) of the radiation and the incident angle. [80] As depicted in Fig. 2, these three processes of the transmittance (T), absorbance (A), and reflectance (R) of the material are very significant to show the fraction of incident radiation intensity.…”

Section: Resultsmentioning

confidence: 99%

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Investigation of the spectral, optical and surface morphology properties of theN,N′-Dipentyl-3,4,9,10-perylenedicarboximide small molecule for optoelectronic applications

Gündüz

2015

Polym. Adv. Technol.

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Investigation of the spectral, optical and surface morphology properties of the N,N′-Dipentyl-3,4,9,10-perylenedicarboximide small molecule for optoelectronic applications † Bayram Gündüz* The spectral and optical properties of the solutions of the N,N′-Dipentyl-3,4,9,10-perylenedicarboximide (PTCDI-C5) small molecule for different molarities were investigated in detail. The significant spectral parameters such as molar/mass extinction coefficients, absorption coefficient, electric dipole line strength, and oscillator strength of the PTCDI-C5 molecule were calculated. The absorption bands of PTCDI-C5 show vibronic structures with seven peaks at 2.08, 2.35, 2.53, 2.70, 2.86, 3.32, and 3.86 eV, respectively. The electronic spectra of the PTCDI-C5 can be characterized by two basic regions as visible and Soret band. Effects of the molarities on the significant many optical parameters were investigated in detail. The direct and indirect allowed optical band gaps of the PTCDI-C5 decrease with increasing molarity. Then, surface morphology properties were investigated and calculated roughness parameters of the PTCDI-C5 film. Finally, we discussed for optoelectronic applications of these parameters, and this study was compared with the similar and related studies in the literature.

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“…Though there are few prototypes of EC smart windows only some can be practically used. These are some fullscale products and prototypes that were recently (2014) delivered to customers, or at least evaluated together with potential customers [22][23][24]. A view of existing device designs and a brief discussion of their pros and cons are explained.…”

Section: Electrochromic Thin Filmmentioning

confidence: 99%

Smart Window Technologies: Electrochromics and Nanocellulose thin film Membranes and Devices

2017

SDRP-JNMS

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ABSTRACT:Strategies for incorporating energy-efficiency requirements into building standards have been implemented by governments in developed countries in order to introduce the concept of green nanotechnology. Substituting regular glass windows in residential/commercial buildings with smart windows is the objective. The smart window is to function as electric dimming glass that is to be built with innovative nanomaterial based membranes/ coatings. Currently, the regular windows are made of glass and curtains/blinds are used to block sun light; eliminating such elements is of importance due to its limited functionality. Though these curtains/blinds blocks UV and prevents sun light illumination inside the rooms, but there are additional issues such as health hazards (e.g. dust and germ collection especially in hospitals) relating to asthma problems, disposal/recycling issues, regular cost, and maintenance which are some of the possible glitches. The smart window is expected to block harmful UV light and provide controlled privacy while also eliminating the problems related to curtains/blinds. Electrochromic (EC) smart windows are already in use that varies the throughput of visible light by electrical voltage or by solar energy application and are able to provide energy efficiency and indoor comfort. These smart windows comprises of electrochromic materials such as LixWO2.89 and HxNiO2 as cathodic and anodic oxide films, respectively, and other complex polymers, which are complicated to create, expensive and some are hazardous in nature. Nanocellulose (achieved from wood/pulp product) is already being used in flexible electronics, so nanomaterial membrane based suspended particle device (SPD) technology for smart window is a probable alternative to EC devices, but still under research. This paper reviews, introduces and discusses the present situation of both (EC and SPD) options for the state-of-the-art smart windows and its applications while also provide ample references to current literature of particular relevance and thereby, hopefully, an easy entrance to the research field. Also the paper presents an outlook for an innovative technology for smart-windows with SPD-EC technology to work as dimming glass on voltage application while also induce the capability of solar applications in smart windows leading to green nanotechnology in buildings.

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Aerogel Insulation for Building Applications

Cited by 42 publications

References 74 publications

Building Integrated Photovoltaics: A Concise Description of the Current State of the Art and Possible Research Pathways

Building Integrated Photovoltaics: A Concise Description of the Current State of the Art and Possible Research Pathways

Investigation of the spectral, optical and surface morphology properties of theN,N′-Dipentyl-3,4,9,10-perylenedicarboximide small molecule for optoelectronic applications

Smart Window Technologies: Electrochromics and Nanocellulose thin film Membranes and Devices

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