English

A bioclimatic house for Tamare, Venezuela, designed to provide psychological, physical and social well being through improved comfort and less energy consumption is explained. Digital and analog models were built to analyze sunlight and shadow behavior and computer simulations to predict thermal performance. Assuming a maximum comfort temperature of 30° C we achieve<! 95% of satisfaction when we ventilated at night and closed the building during daytime.

Samyn & Partners conceived with the studies of the Belgian Building Research Institute, the refurbishment of an existing office building in one of the most polluted avenues in Brussels. Designed to save maximum energy, the building meets all modem comfort standards, respects the environment and creates attractive and enjoyable working space.

Passive and low energy houses are not yet widespread throughout the world. One of the reasons is that their actual performance has not been clarified. In recent years, the number of houses has been increasing in Japan, however, there are very few examples of multiple dwelling building whose performance has been clarified. The annual thermal performance of two dwelling units in a multiple dwelling building in Japan is measured and their high performance is verified.

This paper considers the building's envelope in the design phase. Energy related decisions during the design phase have great influence on the life cycle cost of the building. Since sunlight and climate are changing factors, the envelope is equipped with mobile and adaptable components (shading devices, movable insulation, opening window schedules ...) which can react to climatic conditions. Architects use computer aided design tools to describe a building and its envelope.

Passive solar buildings are expected to provide their intended functions, safely and without adverse health effects, and at substantial energy savings compared to conventional buildings. Moreover, passive solar buildings are frequently considered as appropriate technology in parts of the world where the incidence rates of diseases associated with indoor exposures may be the highest.

The application of a continuous thermal insulation on the external face of building walls ameliorates the thermal performance of external walls and alleviates problems related to thermal bridges. However a further improvement of this insulation system may be achieved by using ventilated walls, which consist of an open ended cavity placed between an insulating board {directly applied on the external side of outer walls) and an external cladding.

ln the past, passive solar buildings were specifically designed with respect to energy and thermal comfort requirements. Within this framework a fa9ade able to collect solar energy and bring indoor suitable conditions for occupants was thought of as an optimal building device. On the contrary, little attention was paid to their acoustic behaviour.