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Most schools spend more money on energy than on books and supplies. In fact, the cost of energy is second only to the cost of wages. Reference documents indicate that effective daylight harvesting can significantly lower energy consumption in school buildings. |
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Billings for commercial energy users are often 50% total KWHs and 50% peak demand use, placing emphasis on load management. Lighting loads are viable candidates for load shedding during periods of high electrical usage. Daylight harvesting is one obvious strategy to shed total load during peak hours. Some state energy codes provide lighting credits for implementation of demand side load-shedding of lighting. LC&D offers the GR 2400–i series of integrated lighting controls as the feature rich solution. |
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Observance of basic design principles can help create an optimal, day-lit space using vertical glazing: maximum useful daylight in and the elements out. Studies have linked increased student grade performance and increased worker productivity to daylighting. Allowing occupants a degree of control assists in acceptance of the system. LC&D´s "slider overrider" enables an acceptable boost or override of automatically set levels. Varied disciplines, such as architectural and electrical, need to take into consideration some important basics. |
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Placement of photosensors is critical. This is why LC&D offers an easy-to-use photosensor placement guide for specifiers.
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Reports indicate that difficulties in adjusting automatic levels after commissioning affect overall satisfaction negatively. In some cases this can even result in a bypass of the system. LC&D has solved this and other issues with the MicroPanel™-iDim and MicroPanel™-iDH - part of a suite of integrated daylight harvesting products ideal for daylighting applications. Both -iDim and -iDH products offer an intuitive range of adjustments to raise or lower electric lighting levels in relation to daylight as well as temporary override of automatic lighting levels (on/off or raise/lower).
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