Energy Saving and Carbon Reduction Study of Balconies with Silica Aerogel Felt Windows and Phase Change Walls

Abstract

Abstract: Building energy consumption increased quickly as a result of people' increased demands for interior thermal comfort as China's socioeconomic status improved. In this paper, energy-saving windows containing SiO2 aerogel felts and phase change wall are applied to optimise the renovation of balconies, and their effects on the energy consumption and indoor thermal environment of existing multi-storey houses are explored. The results show that the retrofit effect is best when using foamed cement as insulation material, C16H34 paraffin wax with a thickness of 10mm as phase change material and energy-saving windows containing SiO2 aerogel felts, with an energy-saving rate of 61.6% in winter and a 100% increase in the average temperature, and an energy-saving rate of 27.2% in summer and a 9.9% decrease in the temperature. At the same time, the building's full life cycle carbon emissions are reduced by 105.775tCO2e.

Keywords: Keywords: silica aerogel felt, Phase change walls, indoor thermal environment, energy consumption, carbon emissions