Lamp Description(a)
|
Typical
System
Wattage(b)
(Watts)
|
System
Efficacy
(LPW)
|
Relative
Light Output(c)
(%)
|
Rated
Lamp Life (Hours)
|
Annual
Energy Use(d)
(kWh)
|
Annual
Energy Cost(d)
($)
|
|
|
|
|
|
|
|
|
|
| 4-foot
tube |
|
|
|
|
|
|
|
| F28T5/841 (5/8"
diameter) |
56 |
103.6 |
109% |
16000 |
230 |
$16.08 |
|
| F32T8/841 (1"
diameter) |
58 |
89.5 |
98% |
15000 |
238 |
$16.66 |
|
| F32T8/741 (1"
diameter) |
58 |
86.5 |
95% |
15000 |
238 |
$16.66 |
|
| F40/841/ES
(34W ) |
63 |
81.9 |
97% |
20000 |
258 |
$18.09 |
|
| F40/741/ES
(34W) |
63 |
79.1 |
94% |
20000 |
258 |
$18.09 |
|
| F40/841 (1"
diameter) |
73 |
78.7 |
108% |
20000 |
300 |
$20.97 |
|
| F40/741 (1"
diameter) |
73 |
76.3 |
105% |
20000 |
300 |
$20.97 |
|
| F40AXT10 (1"
diameter) |
83 |
75.8 |
119% |
24000 |
341 |
$23.84 |
|
| F40CW/ES (34W
cool white) |
63 |
74.9 |
89% |
20000 |
258 |
$18.09 |
|
| F40CW (40W
cool white) (e) |
73 |
72.7 |
100% |
20000 |
300 |
$20.97 |
|
|
|
|
|
|
|
|
|
| 8-foot
tube |
|
|
|
|
|
|
|
| F96T8/841 (1"diameter) |
109 |
93.1 |
94% |
15000 |
447 |
$31.31 |
|
| F96T8/741 (1"
diameter) |
109 |
90.7 |
91% |
15000 |
447 |
$31.31 |
|
| F96/841/ES
(60W) |
113 |
92.9 |
97% |
12000 |
464 |
$32.45 |
|
| F96/741/ES
(60W ) |
113 |
90.6 |
95% |
12000 |
464 |
$32.45 |
|
| F96CW/ES (60W
cool white) |
113 |
86.6 |
90% |
12000 |
464 |
$32.45 |
|
| F96/841 (1"
diameter) |
137 |
84.1 |
107% |
12000 |
562 |
$39.35 |
|
| F96/741 (1"
diameter) |
137 |
82.5 |
104% |
12000 |
562 |
$39.35 |
|
| F96CW (75W
cool white) (e) |
137 |
79.0 |
100% |
12000 |
562 |
$39.35 |
|
|
|
|
|
|
|
|
|
| U-
and Twin-tubes for 2x2 fixtures |
|
|
|
|
|
|
|
| T5FT55 (55
W 21.1" twin-tube) |
106 |
87.8 |
191% |
12-18K |
435 |
$30.44 |
|
| F32T8/841/U/6
(1" diameter, U-bent) |
58 |
85.7 |
102% |
15000 |
238 |
$16.66 |
|
| F32T8/741/U/6
(1" diameter, U-bent) |
58 |
81.9 |
98% |
15000 |
238 |
$16.66 |
|
| F40/741/U/6/ES
(34W, U-bent) |
63 |
77.7 |
100% |
12-18K |
258 |
$18.09 |
|
| T5FT40 (40W
22.5" twin-tube) |
72 |
74.4 |
110% |
12000 |
295 |
$20.68 |
|
| F40/841/U/6
(1" diameter, U-bent) |
73 |
73.9 |
111% |
12000 |
300 |
$20.97 |
|
| F40/741/U/6
(1" diameter, U-bent) |
73 |
72.7 |
109% |
12-18K |
300 |
$20.97 |
|
| T5FT50 (50W
22.5" twin-tube) |
108 |
71.9 |
159% |
18000 |
443 |
$31.02 |
|
| T5FT36 (36W
16.5" twin-tube) |
70 |
70.4 |
101% |
12000 |
287 |
$20.10 |
|
| T5FT39 (39W
16.5" twin-tube) |
70 |
69.2 |
99% |
12-18K |
287 |
$20.10 |
|
| F40CW/U/6/ES
(34W cool white, U-bent) |
63 |
67.8 |
88% |
12-20K |
258 |
$18.09 |
|
| F40CW/U/6 (40W cool white, U-bent) (e) |
73 |
66.7 |
100% |
12-18K |
300 |
$20.97 |
|
|
|
|
|
|
|
|
|
Notes:
In general, values shown are for typical products; significant
variation exists among manufacturers and products.
(a) Analysis assumes use of two-lamp ballasts
in open fixture.
(b) Relative light output is relative to full-wattage
cool white lamps.
(c) Annual energy use and costs assumes 4,100 annual operating
hours at $0.07 per kWh.
(d) Full-wattage cool white lamps formerly dominated fluorescent
lamp sales, but were banned under the Energy Policy Act
of 1992.
Sources: [LBNL] Lawrence Berkeley National Laboratory.
1992. Analysis of Federal Policy Options for Improving
U.S. Lighting Energy Efficiency: Commercial and Residential
Buildings. LBL-31469. Berkeley, Calif.: Lawrence Berkeley
National Laboratory; [NYSERDA] New York State Energy Research
and Development Authority. 1996. Commercial Lamps--Efficiency
Listing. Albany, N.Y.: New York State Energy Research
and Development Authority; [LRC]. Lighting Research Center.
1996. "T5FT Lamps and Ballasts." Lighting
Answers 3 (1); manufacturers lighting catalogs 1996
and 2000. |
|
