Add MEEF to my Favorites

Main Page

About Us





Contact Us








Projects Archive



Site Stats

Submit Release

AmerCable Incorporated

Articles - energy conservation (1) (2) (3) (4) (5) (6)

When selecting the right window film for your application, consider how the climate will affect the product's performance. Smith provides the following example: "In Denver, there is a lot of sunshine, so you have a lot of solar [heat] gain in a building. You may have a high air-conditioning bill or a summer peak-demand problem. There, you would want a fairly reflective type of film or window. However, during the winter, there's some 'free heat' you would be losing by rejecting some of that solar energy. By installing the same film in a low-E version, the reduction in heat loss during the winter would offset the loss of free heat. During the winter it might be energy neutral, but during the summer you're reducing the energy need because you're reducing the air-conditioning load."



The conceptual phases of any building project provide the perfect opportunity to begin discussing lighting design. By properly positioning a building on the site, daylighting can be maximized. "For a daylit building, you're typically going to want to elongate it on an east-west axis," explains Russ Leslie, associate director, Troy, NY-based Lighting Research Center. "The north windows are the best ones for admitting daylight because there are less problems with sun control." By implementing effective control strategies (i.e. photo-sensors, etc.), the need for electric light can be reduced because of the infiltration of sunlight. According to the Snowmass, CO-based Rocky Mountain Institute: "Not only is daylight free, but it's very bright--a single 3- by 5-foot window in direct sunlight lets in more light than what's put out by 100 standard 60-watt incandescent bulbs."

Lighting design is critical to energy management. If your design does not pro vide adequate lighting for the tasks being performed, users are likely to bring in their own light sources (typically inefficient incandescent lamps). Work closely with a lighting consultant or designer to establish how best to light the space for occupant comfort, aesthetics, and energy efficiency. These professionals can provide advice on which lamps, ballasts, fixtures, and controls will help you meet your energy management goals as well.


If you're still operating T12 lamps and magnetic ballasts, the potential savings reaped through retrofit are significant. "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 by 30 to 60 percent while enhancing lighting quality, reducing environmental impacts, and promoting health and worker productivity," says David Nelson of David Nelson 8 Associates in Energy Efficient Lighting, a resource provided by the Whole Building Design Guide.

To increase the efficiency of existing equipment, institute a routine maintenance plan. If lighting controls are already in use, it's imperative that sensors be recalibrated, routine maintenance be performed, and commissioning occur. Malfunctioning controls can actually increase energy consumption and lighting costs.

To trim expenses even more, concentrate efforts on conservation. "Utilities have been running demand-side management and conservation programs since the early 1990s," says Leslie. Available rebates and incentives can help justify the cost of new equipment like electronic ballasts. Dimming lights during peak hours reduces watts--and costs. "Lighting can easily be reduced for several hours by 30 percent with most people not noticing. It can be dimmed even more if you tell people the reason why you're doing it," he explains. This will help reduce the demand for power when utilities are reaching peak capacity. A new device (currently being developed) called a "load-shed ballast" will allow this step dimming to occur automatically and inexpensively.

To determine the potential savings of installing new equipment, run an analysis using some of the calculators provided online by manufacturers. Examine how, when, and where lighting is being used and install occupancy sensors and time controls so that unused and unoccupied spaces are not being lit continuously.


Advertise | Articles | Bulletin | Contacts | CyberShow  | Events | Jobs | Home | Projects  | Sitemap | Stats


Copyright 2006 Middle East Economic Engineering Forum | RAK Free Zone | UAE | Tel/Fax: +971 50 374 0617 All rights reserved.


This site is best viewed using Internet Explorer 4 or higher

Website Created: Mar. 7th. 06  - Add MEEF to my Favorites