An overview of and introduction to current researches on super insulating materials for high-performance buildings

Berardi, Umberto; Sprengard, Christoph

doi:10.1016/j.enbuild.2020.109890

Cited by 31 publications

(11 citation statements)

References 15 publications

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“…Thermal insulation | Super Insulated Materials, such as Vacuum Insulated Panels and aerogels, offer an alternative approach for thermal insulation [24] . Vacuum Insulated Panels (VIPs) ensure a low thermal conductivity through their composition and structure, i.e.…”

Section: Refrigeration Solutions For Vaccine Transportmentioning

confidence: 99%

The status of refrigeration solutions for last mile vaccine delivery in low-income settings

Cattin

Jonnalagedda²,

Makohliso³

et al. 2022

Vaccine: X

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Section: Refrigeration Solutions For Vaccine Transportmentioning

confidence: 99%

The status of refrigeration solutions for last mile vaccine delivery in low-income settings

Cattin

Jonnalagedda²,

Makohliso³

et al. 2022

Vaccine: X

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“…Thermal insulation| Super Insulated Materials (SIMs), such as Vacuum Insulated Panels (VIPs) and advanced porous material, have been recently developed as an alternative to conventional thermal insulation methods [27]. Vacuum Insulated Panels (VIPs) consist of a vacuum trapped in a polymer matrix comprising a core and an envelope.…”

Section: Research Challengesmentioning

confidence: 99%

The status of refrigeration techniques for vaccine storage and transportation in low-income settings

Cattin¹,

Jonnalagedda²,

Makoliso³

et al. 2020

Preprint

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Vaccines need to be continuously stored between 2°C to 8°C, from their production to administration to beneficiaries. Every year, more than 25% of vaccines are wasted. One of the main reasons for this wastage is the lack of cold chain continuity in low-income settings, where electricity is scarce. Recently, several advances have been made in cooling technologies to store and transport vaccines. The current paper presents a review of refrigeration technologies based on scientific publications, industry white papers and other grey literature. For each refrigeration method, we describe its working principle, the best performing devices available as well as the remaining research challenges in order to obtain a very high degree of performance enhancement. Finally, we comment on their applicability for vaccine transport and storage.

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“…Silica aerogels are porous solid materials with the typical characteristic of a pearl-chain-like network assembled by nanoparticles, possessing low density (0.03–0.5 g/cm 3 ), high specific surface area (500–1200 m 2 /g), high porosity (85–99.8%), low thermal conductivity [0.01–0.03 W/(m·K)], low refractive index (1.00–1.08), and low dielectric constant (1.0–2.0) . These excellent properties enable silica aerogels with great potential in various applications such as thermal and acoustic insulation, − catalyst supports, , optical devices, gas storage, dielectric materials, and adsorbents for hazardous pollutants . The conventional preparation process of silica aerogels usually includes a sol–gel process and a specific drying process.…”

Section: Introductionmentioning

confidence: 99%

Fumed Silica-Derived, Ambient Dried, and Low-Cost Nanoporous Aerogel-like Monoliths for Thermal Insulation

Zhang

Wang

Feng

et al. 2023

ACS Appl. Nano Mater.

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Nanoporous silica aerogels have great potential in the application of thermal insulation. However, the commonly used supercritical drying technology of nanoporous silica aerogels has disadvantages such as high cost, high complexity, and harsh drying conditions. Herein, a template orientation strategy has been proposed for fabricating nanoporous aerogel-like silica monoliths (ASMs) based on the low-cost, rapid ambient drying technology without additional treatments of surface modification and solvent exchanging. The successful implementation of the template orientation strategy depends on the silica slurry, which is composed of commercial fumed silica, hydrolyzed methyltrimethoxysilane (MTMS), and sole water solvent. The solidification of silica slurry has been achieved by a controlled polycondensation reaction catalyzed by ammonia originating from the thermolysis of urea. Owing to the skeleton enhancement of fumed silica powders and the hydrophobic effect of methyl groups, ASMs maintain well monolithic formability during ambient drying. Meanwhile, low-cost fumed silica powders have been seen as template orientation agents for inducing MTMS molecules to generate nanoparticle-based network skeletons, endowing ASMs with typical nanopore features (specific surface area as high as 113 m2/g and pore diameter distribution concentrated at ∼40 nm). The resulting ASMs exhibit low density (0.36 g/cm3), high compressive strength (0.92 MPa), and low thermal conductivity [0.056 W/(m·K)]. This work would provide significant guidelines for the fabrication and thermal insulation applications of nanoporous ASMs derived from ceramic powders. This simple and low-cost preparation strategy would promote the large-scale applications and industrial production of nanoporous silica for thermal insulation materials.

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An overview of and introduction to current researches on super insulating materials for high-performance buildings

Cited by 31 publications

References 15 publications

The status of refrigeration solutions for last mile vaccine delivery in low-income settings

The status of refrigeration solutions for last mile vaccine delivery in low-income settings

The status of refrigeration techniques for vaccine storage and transportation in low-income settings

Fumed Silica-Derived, Ambient Dried, and Low-Cost Nanoporous Aerogel-like Monoliths for Thermal Insulation

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