The Study on the Thermal Load of Building Exterior Walls with Aerogel Slurry Insulation under Microclimate Conditions

Abstract

This study aims to address the solubility issue of aerogel particles in water while maintaining their low thermal conductivity properties. To achieve this, different proportions of aerogel slurry were incorporated into coral sand to develop enhanced insulation materials. The goal is to make these materials more economically viable and promote their practical application in various engineering scenarios. This study conducted experiments to measure thermal and moisture performance parameters. The results show that higher aerogel content increases the sensitivity of thermal conductivity to relative humidity. Compared to the dry condition (0% aerogel content), the thermal conductivity difference is minimal (43.5%), while it becomes significant (108.34%) at 32% aerogel content. Regarding wall loads, the largest discrepancy occurs in microclimate heat-humidity conditions during summer and in pure heat transfer conditions under meteorological data during winter. The 32% ASECSC wall experiences the greatest impact from both heat-humidity and urban heat island effects.