Appendix C: Comparison of Component vs. System Efficiencies
Edison Price
Edison Price
Edison Price
Edison Price
Edison Price
Triples-V 42/8
Triples-H 142/8
Triples-H 242/8
Darklite 38/7
Arclite 38/7
Vertical Triple
Horizontal Triple Horizontal Double
PAR38 100
PAR38 70
42 Watt CFL
42 Watt CFL
42 Watt CFL
Watt HIR
Watt MH
Lamp lumens
3,200
3,200
6,400
2,070
6,700
Mean lumens
2,752
2,752
5,504
N/A
N/A
Lamp Lumen Depreciation
0.86
0.86
0.86
1.00
1.00
Ballast Factor
1.00
1.00
1.00
1.00
1.00
Lamp Lumen Factor
1.00
1.00
1.00
1.19
0.78
Luminaire Dirt Depreciation
0.89
0.89
0.89
0.89
0.89
LIGHT LOSS FACTORS
0.77
0.77
0.77
1.06
0.70
Center Beam Candlepower
N/A
N/A
N/A
6,300
16,000
CRI
82
82
82
100
85
CCT
3000-3500
3000-3500
3000-3500
2700-3000
3000
Lamp Life
12,000
12,000
12,000
3,000
10,000
Input watts
49
49
92
100
79
Lamp-Ballast Efficiency, lumens/watt
65
65
69
100
88
Fixture Efficiency (FE)
69.2
69.0
60.9
82.3
88.2
System Efficiency (FE+LLD+BF+LDD)
53.0
52.8
46.6
73.2
78.5
Fixture Zonal Lumens 0-30 degrees
38
29
27
79
84
Fixture Zonal Lumens 0-40 degrees
57
51
45
81
87
Fixture Zonal Lumens 0-60 degrees
69
69
61
82
88
Candlepower Distribution
at Vertical Angle... 0
1659
934
1865
6338
10006
5
1922
902
1824
5374
8753
15
1759
839
1863
3298
6803
25
1357
963
1874
579
1969
35
983
836
1535
57
238
45
537
506
1031
6
31
55
2
7
21
2
0
65
0
0
2
0
0
75
0
0
0
0
0
85
0
0
0
0
0
90
0
0
0
0
0
Total
8219
4987
10015
15654
27801
Notes
(1)The cut sheet for Darklite 38/7 shows candlepower values for a 100-watt HIR, but the photometric report uses an old Q150 lamp
with 1735 lumens. We used a Lamp Lumen Factor of 1.19 to bring the lamp lumens up to 2,070 lumens for the 100 HIR.
(2) The ballast for the 42-watt triple tube lamp is Sylvania Quicktronic Electronic CF DALI 51384, QTP 1x42CF/UNV DALI, 120-277,
42W DT/E, 3200 lumens, 1 lamp, 49 input watts, 65 lumens/watt..
(3) The ballast for the (2) 42-watt triple tube lamps is Sylvania Quicktronic Electronic CF DALI 51386, QTP 2x42CF/UNV DALI, 120-
277, 42W DT/E, 3200 lumens, 2 lamp, 6400 lumens, 92 input watts, 69 lumens/watt.
(4) The ballast for the 70-watt PAR 38 Metal Halide lamp is Sylvania Quicktronic MH, 51913, QTP 1x70MH/UNV-J, 120-277, 70W T6,
6700 lumens, BF 1.0, 79 input watts, 88 lumens/watt.
(5) The candlepower values shown for the 70-watt metal halide are adjusted for accuracy using a Lamp Lumen Factor. The
photometric report is for a 100 watt lamp, so we used a factor of .78 to take the candlepower values down to a 70-watt lamp.
March 2006
Page C-1
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