January 20, 2018 | Author: Anonymous | Category: Arts & Humanities, Performing Arts, Drama
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General Lighting -provides an area with overall illumination. Also known as ambient lighting, general lighting radiates a comfortable level of brightness, enabling one to see and walk about safely. It can be accomplished with chandeliers, ceiling or wall-mounted fixtures, recessed or track lights, and with lanterns outside your home. A basic form of lighting that replaces sunlight, general lighting is fundamental to a lighting plan.

Task lighting -helps you perform specific tasks such as reading, sewing, cooking, homework, hobbies, games, or balancing your checkbook. It can be provided by recessed and track lighting, pendant lighting, and portable lamps. Task lighting should be free of distracting glare and shadows and should be bright enough to prevent eyestrain. Accent Lighting- adds drama to a room by creating visual interest. As part of a decorating scheme, it is used to spotlight paintings, houseplants, sculpture, and other prized possessions, or to highlight the texture of a wall, drapery or outdoor landscaping. Accent lighting requires at least three times as much light on the focal point as the general lighting around it. This usually is provided by track, recessed, or wall-mounted fixtures.

Architecture: Probably the largest impacts on electric lighting requirements and design come from the architectural orientation, massing, ceiling height, and section profiles that determine daylight availability in the building. Typically, south facing orientations, narrow floor plates, high ceilings, and open sections tend to bring more usable daylight into the building and correspondingly reduce the electric lighting use. Lighting designers should be brought onto the project team early in the design process so that they might have an impact on these early siting and massing decisions.

Interior Design: Interior design choices, such as surface finishes, can have a dramatic impact on the lighting system and how much light is required to make a space feel bright. Dark wood finishes require more light (and electricity) to brighten a space than light colored surfaces. The visual elements of lighting equipment must also coordinate with the interior design.

Structural Coordination: Lighting designers must understand how a lighting system might be incorporated into structural elements: coves, beams, and columns; as well as what structural components may become lighted surfaces.

As part of a whole building design process, lighting designers develop an electric lighting solution that addresses: Daylighting—the design should supplement the available daylight Task / Ambient / Accent systems—a lighting system that layers these components provides flexibility in its use and comfort. Control of systems—with daylight, occupancy, vacancy, schedule, time, and user preference. Efficient and effective luminaires—making the best use and distribution of the light source. Efficacious light sources—designer should choose the most efficacious (lumens of light per watt of power) that still accomplishes the design goal for that source and luminaire. Exterior Lighting—while enough light needs to be provided for nighttime visibility, too much can cause glare, adaptation problems, and light trespass.

Fluorescent Lighting Though commonly found in commercial lighting systems, fluorescent (or "gas discharge") lighting has come a long way. Always known for their efficiency and low cost, modern fluorescent lighting is available in warmer colors similar to traditional incandescent lighting. In addition, fluorescents run cooler than incandescent bulbs, making them a safe, affordable and ecologically friendly lighting source.

Controlling lighting through a dimmer is a great way to save money on your electric bill, and increase the life of most bulbs. Typically solid-state devices, dimmers switch lights off and on approximately 120 times per second, creating the perception of relative brightness. By being "on" less often than non-dimmed lighting, dimmer-controlled lights use less electricity. And dimming lights by 25%, for example, will extend the life of the typical bulb by four times.

Replacing energy-wasting incandescent bulbs with CFL'S (Compact Fluorescent Light Bulbs) is an easy way to extend the life of your light bulbs while enjoying significant energy savings. It is estimated that Just one CFL can cut energy consumption by 75%. They're available in different shapes and sizes to fit almost any indoor or outdoor fixture.

Compact Fluorescent Light Bulbs last upto 10 times longer than incandescent bulbs. CFLs may cost more to purchase then oldfashioned incandescent light bulbs, but the resulting energy savings more than offset the difference. By using 50% to 70% less energy, CFLs mean lower utility bills for the user, less strain on the environment, and less global warming emissions.


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