Introduction to Light Emitting Plasma™

Introduction to Light Emitting Plasma™
www.LUXIM.com
ETCC Open Forum, 5 May 2011
LUXIM confidential.
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Light Emitting Plasma™
HIGH LUMENS
HID
OLD
Incandescent
LEP
NEW
LED
Energy Savings
Low Maintenance
Lighting Controls
LOW LUMENS
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LEP Street
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Overview of Plasma Lighting
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Light Emitting Plasma Components
Driver
Emitter
Luxim Corporation Proprietary and Confidential
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LEP Components
Quartz Bulb
+ Rare Earth, Halide Fill
Resonator (High Purity Ceramic) RF Power Amplifier (LDMOS)
LUXIM confidential.
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How Plasma Technology Works
LEP light sources create a light-emitting plasma by coupling radio-frequency (RF) energy into an electrodeless quartz
bulb. The RF energy is created and amplified by an RF circuit that is driven by a Solid-State Power Amplifier. The
following three steps outline the process of light generation in all LIFI systems:
Input
Probe
Bulb
Power
Amplifyer
Resonant
cavity or
“puck”
Input
Probe
Step 1:
An RF circuit is established by connecting an RF power amplifier to a ceramic
resonant cavity known as the “puck”. In the center of the puck is a sealed
quartz bulb that contains materials consistent with metal halide lamps.
Step 2:
The puck, driven by the power amplifier, creates a standing wave confined within
its walls. The electric field is strongest at the center of the bulb which ionizes the
gasses inside the bulb (purple glow).
Step 3:
The ionized gas in turn heats up and evaporates the metal halide materials which form
a bright plasma column within the bulb (blue to bright white light). This plasma column
is centered within the quartz envelope and radiates light very efficiently. In the back
side of the bulb, a highly reflective powder is used to reflect nearly all of this light in the
forward direction.
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Technology Comparison
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Technology Benefit: Source size
LEP
=
=
220 High Brightness LEDs
LED for low illuminance
LEP for high illuminance
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Technology Benefits
Directional Source
Electrode Free
Spectrum
(1) Fixture Efficiency,
(2) Light Distribution
(1) Reliability, (2)
Rapid-Start and ReStrike, (3) Dimming
(1) High Color
Rendering, (2)
Enhanced Visibility
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Iso‐Illuminance Plot (Ft‐Cd)
12 m height, 40 m spacing, 16 m width
Pole Location
16m
1
2
5
1
2
5
Light Emitting Plasma
Type2 Full Cutoff Short/Med STA‐41‐01
280 Total System Watts
High‐Pressure Sodium
Type2 Full Cutoff Med 470W HPS
hotspot
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Pole Spacing
Instant payback on new installations
HPS
16 Kilowatts/Mile
$ 21,900/Mile Fixture
$ 144,000/Mile Pole
$ 9,400/Mile Power
$ 175,300/Mile Total
LEP
9 Kilowatts/Mile
$ 26,600/Mile Fixture
$ 59,900/Mile Pole
$ 5,200/Mile Power
$ 91,700/Mile Total
• Meet standards with 1/3 less fixtures
• Reduced trenching and pole cost
• Reduced energy costs
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Fixture Comparison
Scales to high output lighting compared to LED
LEP ($800)
LED ($>1500)
19,000
Lumens
B2-U1-G1
287
Watts
275
Watts
240 LEDs
21,000
Lumens
(B3-U1-G3)
16,000
Lumens
(B2-U1-G2)
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Value Proposition: Outdoor
LEP STA
Base Case 41 Full
LEP STA
LED
Power 41 Dimmed Full Power
(400 HPS)
LED
Dimmed
Operating Costs
Power (watts)
460
280
193
300
150
Annual Energy Cost
$261
$156
$110
$170
$85
Annual Maintenance Cost
$29
$15
$15
$57
$57
Annual Total Operating Costs
$290
$171
$124
$227
$142
$119
$166
$63
$148
Annual Savings
Capital Costs and Payback
Fixture Cost
$400
$800
$800
$1,700
$1,700
Installation Cost
$153
$153
$153
$153
$153
0
$82
$119
$82
$119
$318
$281
$1,217
$1,181
n/a
2.7
1.7
19.3
8.0
1.57
0.94
0.66
1.03
0.51
0
0.63
0.91
0.55
1.06
Utility Rebate
Incremental Cost
Payback
Environmental Impact & Emissions
Carbon Dixode Emissions (tons/yr)
Carbon Dioxide Reductions (tons/yr)
Assumes: 12 hrs per day use | $0.13/kWHr | $70 replacement labor HID/LEP | $153 replacement labor LED | $500
replacement cost LED
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Applications
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Existing Poles: Area/Site Lighting
LEP STA-41
(Type 3 Optic, 32’ pole)
Illuminance (Fc)
Average= 2.02
Maximum= 8.1
Minimum= 1.0
Avg/Min= 2.02
Max/Min= 8.10
500’(152M)
400W HPS
(Type 3 Faceted Optics,
32’ pole)
Illuminance (Fc)
Average= 3.2
Maximum= 19.4
Minimum= 1.0
Avg/Min= 3.21
Max/Min= 19.40
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Light Quality
Improved quality of light
HPS
470
LEP
273
Average Lux
36
27
Minimum Lux
5
12
7.2
2.3
Wattage
Uniformity
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Dimming & Controls
Reduce power when unoccupied
100% Brightness @ all times
1100 KW-hr per year
3 yr payback
Using timer or occupancy sensor
20% Brightness @ unoccupied
750 KW-hr per year
2 year payback
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Area Lighting Fixtures
LUXIM confidential.
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Iso‐Illuminance Plot (Ft‐Cd)
12 m height, 40 m spacing, 16 m width
Pole Location
16m
1
2
5
1
2
5
Light Emitting Plasma
Type2 Full Cutoff Short/Med STA‐41‐01
280 Total System Watts
High‐Pressure Sodium
Type2 Full Cutoff Med 470W HPS
hotspot
LUXIM confidential.
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Application: Roadway Lighting
9Same Energy
9Triple Light Levels 9Improved Color
9Improved Visibility LEP Streetlights
Existing HID Streetlights High CRI and white light improve appearance LUXIM confidential.
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Heshan, Jiangmen (China)
Replaced 470W HPS with 275W
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LEP Street – Rural
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Roadway Fixtures
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Application: Temporary Lighting
Uses a Fuel Cell instead of generator for quiet operation
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Indoor: Highbay
(LEP)
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Indoor Fixtures
LUXIM confidential.
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Summary
• LEP is the low cost high efficiency
light source for high illuminance
applications
– Saves 40% to 70% of energy
costs
– 3x the life of standard Metal
Halide Luminaires
– Controllability from 100% to
20% to off
– Small form factor
– Significantly more
economical for high
illuminance fixtures
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