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General Lighting Info
DOE- Tips On Saving Energy & Money At Home
Making improvements to your lighting is one of the fastest ways to cut your energy bills. An average household dedicates 11% of its energy budget to lighting. Using new lighting technologies can reduce lighting energy use in your home by 50% to 75%. Advances in lighting controls offer further energy savings by reducing the amount of time lights are on but not being used.
DOE- Tips On Saving Energy & Money At Home |
Energy Efficient Lighting
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Besides affecting the physical and emotional well-being of the building occupants, a building's interior lighting system is both a dominant consumer of electrical energy and a major source of internal heat. In the United States about one-quarter of the electricity budget is spent on lighting, or more than $37 billion annually. In commercial buildings it normally accounts for more than 30% of the total electrical energy consumed. Yet much of this expense can be avoided.
Specifying a high quality energy efficient lighting system that utilizes both natural and electric sources as well as lighting controls can provide a comfortable yet visually interesting environment for the occupants of a space. Recently developed energy efficient lighting equipment such as compact fluorescent lamps and "soft-start" electronic ballasts can be used to help cut lighting operational costs 30% to 60% while enhancing lighting quality, reducing environmental impacts, and promoting health and work productivity.
Energy Efficient Lighting |
Energy Wise Lighting
Lighting is an element of our home and work environment that affects our life in many different ways.
Lighting lets us see to carry out the daily tasks of life; it affects our comfort and mood, and it can provide safety and security. Lighting and lighting fixtures also play a major role in the interior decoration of our homes.
Our consumption of electricity related to lighting also affects our budgets, both at home and in our workplaces. The Department of Energy reports that we spend, on average, 5-10% of our electric bills on lighting in our homes. In some regions of the U.S. this amount can be as high as 25% where air-conditioning is a modest portion of the bill.
ALA members provide ideas of how you can reduce your home's electric bill by installing energy-efficient lighting, and will also provide you with a general overview of home lighting concepts.
Energy Wise Lighting |
Green Lighting: What A Bright Idea
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Lighting consumes a greater share of U-M's energy budget than any other function except heating. Each year over $4 million is spent on electricity to operate the lights in the buildings on U-M's Central and North campuses in Ann Arbor. Much of this energy is needed, but a significant portion is consumed unnecessarily in areas that use inefficient or excessive lighting systems.
Inefficient lighting also has a negative impact on the environment, by requiring the combustion of greater quantities of fossil fuels in electric power plants. The burning of coal, oil, or natural gas results in atmospheric pollutants shown to cause acid rain, smog, and global warming.
Many organizations have come to think of lighting as a prime opportunity for cost saving. Not only can the right lighting system lower electricity bills, but it can often make a work environment more comfortable.
The U-M Plant Department has recently undertaken an ambitious program to upgrade many lighting systems so that they operate more efficiently.
This booklet is an attempt to provide some information about lighting systems and the ways they can be made more efficient. Hopefully, with everyone's cooperation, we can transform the U-M campus into an example of efficient and environmentally friendly lighting.
Green Lighting: What A Bright Idea |
High Efficiency Lighting In Industry & Commercial Buildings
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The amount of energy used from lighting varies from industry to industry, but typically, lighting accounts for approximately 15% of the electrical load in industry. In offices, the lighting may account for 50% of the electrical load. By having an understanding of the lamps, ballasts, luminaires and control options available today as well as the techniques used to develop efficient lighting, lighting can be produced that is energy efficient, cost effective and yields a higher quality of light.
n recent years there have been many new developments in the lighting industry, in both technological equipment and approaches to lighting design. The developments in lamp technology have led to lamps yielding higher efficiency, improved colour rendering and longer lives. Developments in electronic ballasts have produced ballasts that provide discharge/ fluorescent lamps with flicker-free operation, longer life, faster run-up time and cooler operation; in addition, some units provide smooth and silent dimming. There has also been many developments in electronic controls for lighting, either daylight linked or occupancy linked.
High Efficiency Lighting In Industry & Commercial Buildings |
Illuminating Energy- Efficient Options
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High-efficiency lighting systems and lighting controls can offer significant cost benefits and energy savings in commercial and industrial applications. However, implementation has been hampered by technological and market limitations, resulting in a lack of customer demand.
The Lighting Research Center (LRC) at Rensselaer Polytechnic Institute, with funding from the U.S. Department of Energy (U.S. DOE), conducted extensive research to identify and to seek ways of reducing the barriers limiting the wide acceptance and use of energy-efficient lighting systems. This research focused on dimming controls, including load-shed dimming and photosensor-activated daylight dimming, and automatic shut-off controls, including occupancy sensors and time clocks. (Architectural dimming in conference rooms and multi-function rooms was not included in this study.) Barriers to widespread use of whole building lighting control systems also were investigated and the progress in this area was reviewed. Finally, as part of this project, the LRC developed solutions to some of the identified barriers.
Illuminating Energy- Efficient Options |
Kitchens Bustle with Efficient Lighting Opportunities
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The kitchen is more than just a place to cook and eat. It often serves as the administrative and the social center of the home. Because it opens for business before dawn and closes long after sunset, the kitchen uses a lot of energy for lighting. That makes this room an important place to use efficient lighting. In a new kitchen or a remodel, you have the perfect opportunity to create a highly efficient lighting system.
In their 1994 trend survey, the National Kitchen and Bath Association reported that typical incandescent lights were used in 62 percent of the kitchen jobs. Fluorescents were used in only 45 percent. This indicates ample opportunity to use more fluorescents in kitchen projects. Currently, fluorescent lights are the most efficient source of light suitable for residential use. Full-size fluorescent lamps, often called "tubes," convert electricity to light with four times greater efficiency than typical incandescent lamps.
Compact fluorescent lamps (CFLs) are two to three times more efficient than incandescents. Their smaller size makes them easier to fit in places normally occupied by incandescents. Recently, manufacturers have introduced 35- to 40-watt CFLs with light output similar to a 150-watt incandescent.
Kitchens Bustle with Efficient Lighting Opportunities |
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