The 29th AIVC Conference in 2008 - Advanced building ventilation and environmental technology for addressing climate change issues - Proceedings vol:1 issue:4D pages:275-280
29th AIVC Conference: advanced building ventilation and environmental technology for addressing climate change issues edition:29 location:Kyoto, Japan date:14-16 October 2008
To obtain thermal comfort in a moderate climate, dwellings were traditionally provided with a heating system, but few had cooling systems. The heat in summer was kept out of the building by an appropriate building design. Since larger windows and less compact buildings have become more fashionable, overheating in summer is more problematic. Currently, cooling systems are increasingly installed to improve thermal summer comfort. As a reaction to this increase, producers of building materials with a high thermal capacity have promoted their products for the ability to create a more stable indoor temperature. The use of these materials is therefore assumed to contribute to a more comfortable summer situation.
In this paper the results of a parametric study of dwellings in the context of Belgium are presented, analysing the effect of thermal mass on the cooling load. For the analysis, dynamic energy simulations are executed in EnergyPlus. The influence of a number of parameters such as dwelling type, orientation, glazing, insulation level and ventilation patterns on the cooling load is analysed. This is done both for dwellings with and without thermal capacity to investigate the importance of the latter.
In this paper the results of the parametric study are shown. Thermal capacity proved to improve thermal comfort in summer conditions in a moderate climate like Belgium and in combination with ventilation it can avoid the need for cooling. In winter situation however, some first simulations indicated that thermal capacity leads to a higher energy demand for an intermittent heating schedule. The most important findings are summarized and some aspects remaining for further investigation are highlighted.