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By using solar energy, a thermobimetal system can be smartly designed to block the sun. This strategy is especially useful when trying to prevent solar heat gain and glare to enter a building, while using no energy and needing no controls.
Using the sun's heat to curl the thermobimetal to the right configuration, it can also reflect solar energy and heat into a solar chimney. When the temperature rises inside the chimney, the hot air escapes drawing in cool air from below. Not only does this movement of air ventilates the space below, it provides a small breeze that can enhance the cooling effect.
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