Topic
Superinsulation
About: Superinsulation is a research topic. Over the lifetime, 124 publications have been published within this topic receiving 2321 citations.
Papers published on a yearly basis
Papers
TL;DR: Aerogel is a kind of synthetic porous material, in which the liquid component of the gel is replaced with a gas as mentioned in this paper, and it is considered as one of the most promising thermal insulating materials for building applications.
Abstract: Aerogel is a kind of synthetic porous material, in which the liquid component of the gel is replaced with a gas. Aerogel has specific acoustic properties and remarkably lower thermal conductivity (≈0.013 W/m K) than the other commercial insulating materials. It also has superior physical and chemical characteristics like the translucent structure. Therefore, it is considered as one of the most promising thermal insulating materials for building applications. Besides its applications in residential and industrial buildings, aerogel has a great deal of application areas such as spacecrafts, skyscrapers, automobiles, electronic devices, clothing etc. Although current cost of aerogel still remains higher compared to the conventional insulation materials, intensive efforts are made to reduce its manufacturing cost and hence enable it to become widespread all over the world. In this study, a comprehensive review on aerogel and its utilization in buildings are presented. Thermal insulation materials based on aerogel are illustrated with various applications. Economic analysis and future potential of aerogel are also considered in the study.
676 citations
TL;DR: In this article, the intimate link between aerogels and thermal superinsulation is described, and the potential for non-evacuated super-insulation systems must be considered as an opportunity for sustainable development.
Abstract: This review is focused on describing the intimate link which exists between aerogels and thermal superinsulation. For long, this applied field has been considered as the most promising potential market for these nanomaterials. Today, there are several indicators suggesting that this old vision is likely to become reality in the near future. Based on recent developments in the field, we are confident that aerogels still offer the greatest potential for non-evacuated superinsulation systems and consequently must be considered as an amazing opportunity for sustainable development. The practical realization of such products however is time-consuming and a significant amount of R&D activities are still necessary to yield improved aerogel-based insulation products for mass markets.
630 citations
TL;DR: This study designed and synthesized hyperbolic architectured ceramic aerogels with nanolayered double-pane walls with a negative Poisson’s ratio and a negative linear thermal expansion coefficient that display robust mechanical and thermal stability and are ideal for thermal superinsulation under extreme conditions, such as those encountered by spacecraft.
Abstract: Ceramic aerogels are attractive for thermal insulation but plagued by poor mechanical stability and degradation under thermal shock. In this study, we designed and synthesized hyperbolic architectured ceramic aerogels with nanolayered double-pane walls with a negative Poisson’s ratio (−0.25) and a negative linear thermal expansion coefficient (−1.8 × 10 −6 per °C). Our aerogels display robust mechanical and thermal stability and feature ultralow densities down to ~0.1 milligram per cubic centimeter, superelasticity up to 95%, and near-zero strength loss after sharp thermal shocks (275°C per second) or intense thermal stress at 1400°C, as well as ultralow thermal conductivity in vacuum [~2.4 milliwatts per meter-kelvin (mW/m·K)] and in air (~20 mW/m·K). This robust material system is ideal for thermal superinsulation under extreme conditions, such as those encountered by spacecraft.
559 citations
TL;DR: A SiC@SiO2 nanowire aerogel with a nanowires-assembled anisotropic and hierarchical microstructure was prepared by using directional freeze casting and subsequent heat treatment to realize thermal superinsulation and high stiffness of ceramic aerogels.
Abstract: Ceramic aerogels are promising lightweight and high-efficient thermal insulators for applications in buildings, industry, and aerospace vehicles but are usually limited by their brittleness and structural collapse at high temperatures In recent years, fabricating nanostructure-based ultralight materials has been proved to be an effective way to realize the resilience of ceramic aerogels However, the randomly distributed macroscale pores in these architectures usually lead to low stiffness and reduced thermal insulation performance Here, to overcome these obstacles, a SiC@SiO2 nanowire aerogel with a nanowire-assembled anisotropic and hierarchical microstructure was prepared by using directional freeze casting and subsequent heat treatment The aerogel exhibits an ultralow thermal conductivity of ~14 mW/m·K, an exceptional high stiffness (a specific modulus of ~247 kN·m/kg), and excellent thermal and chemical stabilities even under heating at 1200°C by a butane blow torch, which makes it an ideal thermally superinsulating material for applications under extreme conditions
235 citations
TL;DR: In this paper, the authors investigated the optimum thermal insulation thickness of aerogel and its environmental impacts for the climatic conditions of Nottingham, UK, and concluded that aeroglather-based thermal superinsulation provides remarkably slimmer constructions and larger living spaces in buildings compared to the conventional insulation materials.
162 citations
Related Topics (5)
Performance Metrics
| Year | Papers |
|---|---|
| 2021 | 12 |
| 2020 | 14 |
| 2019 | 6 |
| 2018 | 4 |
| 2017 | 3 |
| 2016 | 3 |