|
Energy Efficient T8 Fluorescent Lamps
1. If you are still using T12 fluorescent lighting as the major light
source in your buildings, it is time to consider upgrading to the T8
fluorescent lamps. T8 lamps are the highest efficiency lamps for 4 and
8-foot fixtures. Most applications will benefit from T8 technology versus
T12 for several reasons. The T8 lamps have a higher efficacy (lumens per
watt) rating and better color rendering than T12 lamps. Depending on the
ballast used, the T8 lamp often delivers the same lumen output for 20% -
40% fewer watts.
2. The 4ft. F32T8 fluorescent lamps use up to 20% fewer watts than
standard F40T12 lamps, saving approximately $12.80 in energy costs over
the life of the lamp (8 cents per kWh). If used with an electronic ballast,
an additional 7-10% efficiency can be obtained. The 8ft. F96T8 lamps use
up to 33% fewer watts than standard F96T12 lamps on high efficiency
electromagnetic ballasts. T8 lamps are available in various colors
(CRI 75-90) with color temperatures from 3000K- 5000K.
3. The F32T8 lamp life is the same as standard F40T12 lamp on rapid
start ballasts (20,000 hours). The F96T8 lamp has an average life of
15,000 hours and is 25% longer than the standard F96T12 lamp, which is
rated at 12,000 hours.
4. T8 lamps are included on some energy reduction rebate programs
offered by electric utilities because of their high-energy efficiency.
Check with your local utility to inquire about possible cash rebates
for upgrading your lighting.
5. Although an upgrade to T8s with electronic ballasts may have a higher
initial
cost, in the long run it will produce better light quality and significant
energy savings over the T12 lamps. In many cases it has been estimated
that the payback period for the upgrade may be four or five years.
6. For additional information, contact Larry Lau,
Consulting
Support Service at 202-565-6436.
|
