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Professor Mark A. Comeau, AIA © Interior Environment Week 9 Lighting: High efficiency Day-lighting Occupancy & daylight sensing, programmable operations Climate Control: High Efficiency Alternate fuel sourcing Systems integration Materials: Healthy (off-gassing, VOCs) Renewable Recyclable
Interior Environment Professor Mark A. Comeau, AIA © Week 9 Incandescent Compact-Fluorescent
Professor Mark A. Comeau, AIA © Interior Environment Week 9 Lighting: fixture efficiency lamp lumen output reflectance of surrounding surfaces light losses from lamp lumen depreciation and dirt accumulation room size and shape availability of natural light.
Professor Mark A. Comeau, AIA © Interior Environment Week 9 Fluorescent lamps Fluorescent lamps use only about a quarter of the energy used by incandescent bulbs to provide the same light level. They are more expensive to buy but are much cheaper to run and can last up to ten thousand hours. Most fluorescent lamps do not switch on immediately. This is a design feature to lengthen the life of the tube. Fluorescent lamps are available in a range of styles and produce different kinds of light. Triphosphor tubes provide a high quality, more natural and less bright-white reflecting light. Fluorescent lamps are ideal for areas where lighting is required for long periods of time, such as the living room and kitchen, and for security lighting. Tubular lamps, also known as fluorescent tubes, are available in a straight or circular style. Compact fluorescent lamps (CFLs), also known as long life bulbs, are usually designed to fit into conventional bayonet or screw fitting light sockets. Halogen lights Halogen lights are a type of incandescent lamp. They last up to two thousand hours. They can be either tubular or low voltage bulbs. Low voltage halogen lamps are not low energy lamps. They are slightly more efficient than normal bulbs of the same wattage and are most suitable for highlighting features or work areas. Halogen lights are used for down-lighting to provide bright pools of light rather than general illumination. Down-lights can cause gaps in ceiling insulation, particularly if they require clear space to allow heat to dissipate. Halogen lights should be fitted with lower wattage and more efficient bulbs. Efficient 35W lamps are available that produce as much light as a standard 50W lamp. Incandescent lamps Incandescent lamps or bulbs are the least energy efficient type of lighting. They are inexpensive to buy, but their running costs are high. Incandescent lamps are most suitable for areas where lighting is used infrequently and for short periods, such as laundries and toilets. Standard incandescent bulbs last about a thousand hours and must be regularly replaced.
Professor Mark A. Comeau, AIA © Interior Environment Week 9 Day Lighting: Can reduce total building energy use by 33%!
Professor Mark A. Comeau, AIA © Interior Environment Week 9 Litetronics Micro-Brite Cold Cathode R30 Low Impact Living has tested this Micro-Brite cold cathode fluorescent lamp, and it is the best for replacing bulbs in dimmable recessed fixtures. Unlike many dimmable CFLs, this bulb dims almost all the way down. It is a direct replacement for a 25-30 watt incandescent R30 reflector, so make sure you don't need high- intensity lighting before trying one. It is the same shape and size as an incandescent R30, but with all the benefits of cold cathode technology, including being dimmable, flashable, and suitable for use in hot and cold environments. Greenlite Dimmable Spiral This dimmable compact fluorescent bulb offers smooth dimming, start-up at a low dimming position if desired, and a double phosphor coating to deliver higher lumen maintenance. It is capable of dimming down to 20% of full light output. REPLACES: 75-90 watt incandescent.
Professor Mark A. Comeau, AIA © Interior Environment Week 9
Professor Mark A. Comeau, AIA © Interior Environment Week 9 Infrared detection Dual: Infrared detection & stereo Doppler detection Light Sensing & Programming
Professor Mark A. Comeau, AIA © Interior Environment Week 9
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