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Thermobimetal Louver System
Thermobimetal Louver System
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Thermobimetal Louver System
© 2011 Cacciapaglia, Broughton, Nix. All rights reserved._PROJECT STILL IN DEVELOPMENT_How can a building envelope integrate environmentally sensitive materials to passively control light filtration?This project explores a lo-tech (no digital sensors, actuators or software-based controls) mechanism that transforms to mitigate varying environmental conditions. The prototype is a self-regulating, light-filtering system dependent solely on heat temperatures, allowing light to penetrate in cool conditions and shading the interior in warm conditions. Because the system is self-regulating, it requires no additional intervention.The building envelope prototype is a multi-layered composition that creates a micro-climate within the airspace between two layers of transparent material. A sealed, double-glazing chamber establishes a greenhouse condition in which small changes in temperature can elicit a material response.As a result of these changes, thermobimetallic coils expand or contract to rotate louvers and control shading. In warm conditions, the coils close louvers to shade and decrease thermal gains, and in cool conditions the elements contract to open louvers and allow for greater light penetration.The system is developed to capitalize on the large number of curtain wall buildings constructed in the second half of the 20th century. Through retrofitting, it will have a greater impact more quickly. An easily deployable retrofit system would have an immediate impact on the energy efficiency and aesthetics of the existing building stock.© 2011 Cacciapaglia, Broughton, Nix. All rights reserved.
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