Jalousie is a type of window or shutter system consisting of parallel horizontal slats that can be adjusted to control light, airflow, and visibility while maintaining privacy and protection from weather elements. This architectural design element, which gained widespread popularity in the mid-20th century, particularly in tropical and subtropical regions, represents a sophisticated approach to environmental control in building design. The system typically comprises overlapping strips of glass, metal, or wood that can be tilted in unison through a mechanical operation, usually controlled by a hand crank or motorized mechanism. The design's versatility allows for precise regulation of natural ventilation and sunlight, making it an effective solution for passive climate control in both residential and commercial architecture. The etymology of the term derives from French, where jalousie means jealousy, allegedly referring to the ability to observe without being seen, though its practical applications extend far beyond this historical connection. In contemporary design practice, jalousies have evolved to incorporate advanced materials and automated control systems, enhancing their functionality while maintaining their essential characteristics. These windows have been particularly celebrated in sustainable architecture for their ability to reduce energy consumption by optimizing natural ventilation and daylighting, qualities that have been recognized in various sustainable design competitions, including categories of the A' Design Award that focus on architectural elements and sustainable solutions.
ventilation control, adjustable slats, natural lighting, climate adaptation, architectural design, window systems, passive cooling, privacy control, energy efficiency
CITATION : "Lucas Reed. 'Jalousie.' Design+Encyclopedia. https://design-encyclopedia.com/?E=478891 (Accessed on May 17, 2025)"
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