The retrofit involved removing all four lamps along with the ba

  • All fluorescent and a lot HID lamps contain mercury. Only incandescents and light-weight emitting diodes (LEDs) tend not to. Even low-mercury lamps must be either recycled or dumped properly uv ballast. Fortunately, the prices involved can be a small fraction in the life cycle cost with the typical fixture.

    "While better for that environment the other way to garner LEED points, on the subject of lamp disposal, professional lighting maintenance companies see low-mercury lamps just like standard lamps," says Joe Potyak, Eastern Region operations manager for Lime Energy. "Only in certain states could such lamps be legally dumped in city landfills. For the small savings associated with doing so, look for most of our customers prefer to not take the potential risk of a violation or perhaps environmental black eye."

    UV LED systems contain the benefit of converting electricity into light energy far more efficiently, providing a large reduction in electricity operating costs. A single UV LED curing system will use as little as 600W of electricity. Cost savings in the reduced electrical consumption alone might be enough to quickly pay back an investment on the installation from the LED systems.

    The building on this application had T-bay fixtures mounted over 20 feet high, each with four 54-watt T5HO lamps per fixture. The lamps and ballast were consuming about 230 watts per fixture while providing adequate lighting. The retrofit involved removing all four lamps as well as the ballast, which ends up in an empty fixture with just the incoming power wires remaining and also the empty lamp holders.