Transcript Document

Lighting Retrofits
The low hanging fruit
or is it?
Kentucky Electric Cooperative’s 2006
Key Accounts Technical Conference
Low hanging fruit because:
• Savings are real and predictable
• Retrofits are as good or better than the
original
• Fast paybacks
Kentucky Electric Cooperative’s 2006
Key Accounts Technical Conference
Assumptions for cost benefit
analysis
• $5.50 per kW demand charge and 4¢/kWh energy
charge.
• 136 hours per week of operation
• $50 to $75 per fixture labor charge to retrofit
Kentucky Electric Cooperative’s 2006
Key Accounts Technical Conference
Reference fixture
400 W metal halide
The problem with standard 400 W
Metal Halide lamps
• They are no more efficient than a high
output fluorescent lamp
• When the voltage sags they go out and may
require up to 20 min. to restrike
• Color rendition (CRI) is OK – on the order
of 65, incandescent is 100
• They lose light output relatively fast
(Costs $162.65 per year to run)
Kentucky Electric Cooperative’s 2006
Key Accounts Technical Conference
Lumen Depreciation
Lamp Lumens
40,000
35,000
30,000
25,000
Std 400W
20,000
15,000
0
5,000
10,000
15,000
Hours of Operation
20,000
Lumen Depreciation
Lamp Lumens
40,000
35,000
30,000
300 W PS
25,000
Std 400W
20,000
15,000
0
5,000
10,000
15,000
Hours of Operation
20,000
Simplest option
Pulse start Metal Halide, 300 W or 340 W
+ Equivalent to 400 W and easy to retrofit
+ One lamp per fixture to maintain
+ Quicker restrike
- Higher wattage than other options
($42 annual savings, $50 to retrofit, $95 to
purchase – 42 month payback)
Kentucky Electric Cooperative’s 2006
Key Accounts Technical Conference
Lumen Depreciation II
Lamp Lumens
40,000
35,000
30,000
F54T5(5)
300 W PS
25,000
Std 400W
20,000
15,000
0
5,000
10,000
15,000
Hours of Operation
20,000
Retrofit fixtures with fluorescent
lamps in them
• Advantages
–
–
–
–
Very low wattage
Excellent CRI
Easy to install
Don’t suffer from
restrike delay
– Can easily be used
with controls
– May be able to lower
illumination level
• Disadvantages
– 4 to 8 lamps per fixture
– May not produce the
illumination advertised
Kentucky Electric Cooperative’s 2006
Key Accounts Technical Conference
Many Fluorescent Options
Kentucky Electric Cooperative’s 2006
Key Accounts Technical Conference
Lighting types compared
All options have 50 fixtures
•
•
•
•
•
Current A – 400 W MH
Option B – 300 W MH PS
Option C – F54T5/HO – 4-lamps
Option D – F32T8, HO ballast – 4-lamps
Option E – F54T5/HO – 6-lamps
Cost comparisons
Light Levels
FC (hz)
Uniformity
CRI
Eff. - lumens/watt
A - 400wMH Metal refl
46.4
0.8
65
50
Operating costs
Total Sq.ft
Fixture spacing
Total # of fixtures
Watts/fixture
Total watts
kW rate
Kwh rate
Operating hrs/year.
Energy cost/year.
A- 400wMH Metal refl
20,000
20'x20'
50
459
22,950
5.50
0.040
7,072
$8,006.80
Initial equipment cost
Total # of Fixtures
Cost/fixture w/lamp(s)
Installation cost/fixture
Installed cost/fixture
Total installed cost
A- 400wMH Metal refl
50
$0.00
C - F54T-5/HO(4) 2x4
39.4
0.7
85
81
D - FT40(6) 2x4
45.4
0.7
85
75
E - F54T-5/HO(6) 2x4
62.2
0.7
85
81
B- 300w MH PS metal
refl 20,000
20'x20'
50
340
17,000
5.50
0.040
7,072
5,930.96
C - F54T-5/HO(4) 2x4
20,000
20'x20'
50
234
11,700
5.50
0.040
7,072
4,081.90
D - FT40(6) 2x4
20,000
20'x20'
50
224
11,200
5.50
0.040
7,072
3,907.46
E - F54T-5/HO(6) 2x4
20,000
20'x20'
50
351
17,550
5.50
0.040
7,072
6,122.84
B- 300w MH PS metal
refl
50
$95.00
$50.00
$145.00
$7,250.00
C - F54T-5/HO(4) 2x4
50
$180.00
$75.00
$255.00
$12,750.00
D - FT40(6) 2x4
E - F54T-5/HO(6) 2x4
50
$201.75
$75.00
$276.75
$13,837.50
Maintenance Cost
Lamps/fixture
Total Lamps
Lamp life @ 10hrs./start
Replacement lamps/year
Cost/replacement lamp
Relamp labor (hrs/fixture)
Labor rate/hour
Relamp Labor/Fixture
Maintenance cost/fixture
1-year cost of Maintenance
5-year cost of Maintenance
A- 400wMH Metal refl
1
50
20,000
17.7
$18.00
0.25
$30
$7.50
$25.50
$450.84
$2,254.20
B- 300w MH PS metal
refl
1
50
20,000
17.7
$20.00
0.25
$30
$7.50
$27.50
$486.20
$2,431.00
C - F54T-5/HO(4) 2x4
4
200
30,000
47.1
$10.88
0.13
$30
$3.75
$47.25
$556.92
$2,784.60
D - FT40(6) 2x4
Total Cost of Operation
1-year TCO
3-year TCO
5-year TCO
10-year TCO
A- 400wMH Metal refl
$8,457.64
$25,372.91
$42,288.18
$84,576.36
B- 300w MH PS metal
refl$13,667.16
$26,501.48
$39,335.80
$71,421.60
C - F54T-5/HO(4) 2x4
$17,388.82
$26,666.45
$35,944.08
$59,138.16
D - FT40(6) 2x4
$15,088.26
$23,264.29
$31,440.32
$51,880.38
E - F54T-5/HO(6) 2x4
$20,773.62
$34,645.87
$48,518.12
$83,198.74
Payback (Years)
Payback period
Payback w/o maintenance
A- 400wMH Metal refl
C - F54T-5/HO(4) 2x4
3.34
3.25
D - FT40(6) 2x4
2.52
2.68
E - F54T-5/HO(6) 2x4
9.09
7.34
$0.00
$0.00
B - 300w MH PS
51.2
0.8
65
74
B - 300w MH PS
3.55
3.49
50
$145.01
$75.00
$220.01
$11,000.25
6
300
24,000
88.4
$1.42
0.13
$30
$3.75
$12.26
$180.56
$902.79
E - F54T-5/HO(6) 2x4
6
300
30,000
70.7
$10.88
0.13
$30
$3.75
$69.00
$813.28
$4,066.40
Input Watts/Fixture
500
459
450
400
351
340
350
300
234
250
224
200
150
100
50
A- 400wMH Metal refl B- 300w MH PS metal C - F54T5/HO(4) 2x4
refl
D - F40T8(6) 2x4
E - F54T5/HO(6) 2x4
Illumination (fc)
70
62.2
60
50
45.4
45.1
41.5
39.4
40
30
20
10
A - 400wMH Metal refl
B - 300w MH PS
C - F54T5/HO(4) 2x4
D - F40T8(6) 2x4
E - F54T5/HO(6) 2x4
Payback
Payback (Years)
w/ maintenance
w/o maintenance
Replacement lamps
B - 300w MH PS C - F54T5/HO(4)
2x4
3.55
3.34
3.49
3.25
18
47
D - F40T8(6)
2x4
2.52
2.68
E - F54T5/HO(6)
2x4
9.09
7.34
88
70
Kentucky Electric Cooperative’s 2006
Key Accounts Technical Conference
Some Manufactures May be Using
Snake Oil to Push Their Product
• Not comparing similar fixtures
• Using color to promote better seeability
with lower illumination
Fixtures with glass reflectors
Light level reduced
from 41.5 fc to 31.8
Kentucky Electric Cooperative’s 2006
Key Accounts Technical Conference
Is this real?
Scoptic sight
4000k MVR Metal Halide
85 Design Lumens/Watt
107 Pupil Lumens/Watt
UltraLux™ High Bay
w/BlueMax™
88 Design Lumens/Watt
202 Pupil Lumens/Watt
Questions
Kentucky Electric Cooperative’s 2006
Key Accounts Technical Conference