Paper Conference

Proceedings of Building Simulation 2021: 17th Conference of IBPSA


Investigation of the temperature-dependent conductivity towards improving energy performance of buildings

Anna Wieprzkowicz, Dariusz Heim
Lodz University of Technology, Poland

Abstract: Since the thermal conductivity of the wall is a parameter that highly determines the energy performance of the building, its proper definition is significant. During the heating season, minimalization of the heat transfer seems to be the optimal solutions. On the other hand, it can lead to an increase in the cooling energy demand. The approach presented in the paper is based on the concept of dynamic insulation material. The effect of temperaturedependent thermal conductivity on both heating and cooling needs was investigated under variable climatic conditions using ESP-r. It was concluded that the dynamic changes of thermal conductivity can contribute to the decrease of cooling needs even up to 50%.
Keywords: thermal conductivity, energy demand, building materials
Pages: 1147 - 1154