Transcript Halogen lights - Architectural Design Program

Interior Environment
Professor Mark A. Comeau, AIA ©
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, VOC’s)
 Renewable
 Recyclable
Interior Environment
Professor Mark A. Comeau, AIA ©
Week 9
Incandescent
Compact-Fluorescent
Interior Environment
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 ©
Week 9
Interior Environment
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 ©
Week 9
Interior Environment
Day Lighting:
Can reduce total building
energy use by 33%!
Professor Mark A. Comeau, AIA ©
Week 9
Interior Environment
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 highintensity 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 ©
Week 9
Week 9
Professor Mark A. Comeau, AIA ©
Interior Environment
Interior Environment
Professor Mark A. Comeau, AIA ©
Week 9
Light Sensing & Programming
Infrared detection
Dual: Infrared
detection &
stereo
Doppler
detection
Week 9
Professor Mark A. Comeau, AIA ©
Interior Environment