Building envelope design for a zero energy response.

GANEM, CAROLINA; COCH, HELENA

Eindhoven, Holanda

Conferencia; 21st PLEA - International Conference on Passive and Low Energy Architecture. Built environments and environmental buildings.; 2004

Technische Universiteit Delft

New ideas that include sustainability as an integral quality of the whole design concepts contribute to set higher standards, tending to the World sustainable development. Variety of solutions of high quality design must be presented and discussed as the conception of a whole design idea is not restricted to one solution when projecting sustainability. Great importance is given to the analysis of the treatment of the building’s envelope, understood as a dynamic and selective limit between interior and exterior, where the main passive strategies can be conceived. The interior-exterior transition may be done through intermediate spaces that have the quality to function as environmental barriers and connectors acting  as “filters” and becoming “environmental regulators”. It is presented a zero energy project of a thematic library for the Jardí Botànic de Barcelona in which early decisions favouring passive techniques gave form: compactness, slenderness and porosity to the project. Thermal balance for winter and summer has been studied using ARCHISUM and average daylight levels were simulated with RAFIS. NIF levels go from 10 to 15%. Internal temperatures are, in winter between 20ºC and 24ºC, and summer between 23ºC – 28ºC; been the external temperature’s range from 0º to 15ºC and from 22ºC to 40ºC, respectively.