Table of Contents Author Guidelines Submit a Manuscript
Journal of Materials
Volume 2014 (2014), Article ID 127049, 10 pages
http://dx.doi.org/10.1155/2014/127049
Review Article

Aerogels as Promising Thermal Insulating Materials: An Overview

Organic Building Materials Group, CSIR-Central Building Research Institute, Roorkee 247667, India

Received 11 January 2014; Accepted 11 February 2014; Published 27 April 2014

Academic Editor: Iwan Kityk

Copyright © 2014 Prakash C. Thapliyal and Kirti Singh. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Aerogels are solids with high porosity (<100 nm) and hence possess extremely low density (0.003 g/cm3) and very low conductivity (10 mW/mK). In recent years, aerogels have attracted more and more attention due to their surprising properties and their existing and potential applications in wide range of technological areas. An overview of aerogels and their applications as the building envelope components and respective improvements from an energy efficiency perspective including performance is given here. This overview covers thermal insulation properties of aerogels and studies regarding structural features which will be helpful in buildings envelope. The improvements of thermal insulation systems have future prospects of large savings in primary energy consumption. It can be concluded that aerogels have great potential in a wide range of applications as energy efficient insulation, windows, acoustics, and so forth.