Performance Evaluation of Building Envelope Systems Incorporating Conventional and Innovative Insulation Materials

Abstract

In this study the performances of a residential building with different types of insulation materials are studied. This study aims to provide better understanding in the energy, hygothermal and sustainability behaviors for the design of residential buildings. Building energy simulation is performed in BEopt to compare the energy consumption with the use of each insulation type at selected locations. A hygrothermal analysis in WUFI and life cycle assessment in Athena Impact Estimator is also performed. The results show that the Vacuum Insulation Panel generally performs the best among all types of insulation material types/systems considered. The use of Phase Change Materials does not lead to significant energy saving but will increase from cold regions to warm regions. The use of cellulose fiber and mineral wool tends to have a noticeably higher internal water content compared to the rigid board insulation materials, which may indicate the necessity of vapor retarders/barriers. The life cycle assessment shows that compared to the total operational energy, the embodied energy is only a small portion, and therefore may be neglected in practical design.