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System Performance | System Description | Case Study |
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System Performance
When a small voltage is applied to the SPD film, its microscopic particles, which in their stable state are randomly dispersed, become aligned and allow light to pass through. The response is immediate, uniform and with stable color throughout the film. Adjustment of the voltage allows users to control the amount of light, glare and heat passing through the glazing. The system’s response ranges from a dark blue appearance, with up to full blockage of light in its off state, to clear in its on state. This blue tint can be altered by using coatings or interlayers of other materials in conjunction with the SPD light-control film. The adjustments of different shades can be manual, using a common rheostat device; or it can be automated using light sensors, thermostats, timers or other intelligent building control systems. In its darkest state the system still allows vision through it. The use of dynamic light-control permits more heat to enter in cold environments and less in hot environments, which can potentially result in significant heating and cooling savings. For a more advanced lighting analysis and project specific results, we recommend using the Lightsolve program (under development).
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Performance data for all systems in the same category. Comparison to systems in other categories, selected through the matrix filtering process.
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System Description
SPD technology is an emulsion applied on a plastic substrate creating the active film. This plastic film is laminated (as a single glass pane) or suspended between two sheets of glass, plastic or other transparent materials. The insulating glass unit includes a SPD film laminated between panes of glass or polycarbonate, an gap filled with either Argon or another inert gas for thermal insulation, a low-e coating and possibly other spectrally selective coatings, and a static outer lite. The maximum width is 1.2 meters (3.94 feet) and there is no limit for length. No special framing is required and control systems are easily integrated into a building’s line voltage. The panels need the same maintenance as standard insulating glass units. SPD-SmartGlass is composed of non-toxic, non-flammable materials. |
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