Abstract

To improve energy efficiency in buildings, airtightness and insulation level have been widely improved in order to lower heating demand in winter but can lead in many cases to overheating in summer. To avoid this summer and mid-season discomfort, thermal mass plays an important role. The objective of this work is to develop a tool allowing architects and building engineers to better understand and highlight the impact of thermal mass in summer comfort and of some important parameters regulation in heavy buildings thermal behaviour. A numerical approach has been conducted with the EnergyPlus software on some simple well defined test cases. Specific climate conditions have been built to highlight the thermal mass impact. In this paper, the effects of night ventilation, shutters regulation and thermal mass quantities are presented on those solicitations.

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