Date post: | 10-Feb-2017 |
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BRIGHTEN YOUR FUTURE WITH LED LANDSCAPE LIGHTING
Sean Mullarkey, Applied Water Technologies, Inc.
[email protected] 513-379-5780
BRIGHTEN YOUR FUTURE WITH LED LANDSCAPE LIGHTING
• What are the benefits of LED lighting• What is an LED (light emitting diode)• What are the short comings of LED• Design considerations for LED• Cost comparisons of LED and incandescent
lighting
WHAT ARE THE BENEFITS OF LED LIGHTING
By Using LED Landscape Lighting, You Are Doing Your Part To Go Green!
Fewer fossil fuels are used in the manufacturing of LED’s than in incandescent lamps.
WHAT ARE THE BENEFITS OF LED LIGHTING
• Energy $$$$ savings– Uses 1/3 of the energy per lumen compared to
incandescent lamps• Maintenance $$$$ savings
– No bulbs to be replaced
WHAT ARE THE BENEFITS OF LED LIGHTING
• Installation cost of the following items is lower– Wire - smaller size and less wire– Power console – fewer transformers and smaller
transformers– Labor – less labor designing system wire schemas and less
labor to install because of simplified wiring
• Disclaimer – The fixtures are generally more expensive than your typical landscape lighting fixture.
WHAT ARE THE BENEFITS OF LED LIGHTING
• Easier to train your crews on installation techniques
• You will have happier customers• You will earn more profits and have a better
reputation, less call backs
WHAT ARE THE BENEFITS OF LED LIGHTING
• Bulbs, Lamps, Arc lamp, Beacon, Candle, Flame, Flare, Illuminator, Lantern, Taper, Torch, etc. What ever you call a Light Bulb LED’s don’t have them!
• LED life expectancy is 40,000 hrs. or 18 years at 6 hours on per night
WHAT IS AN LED
• Brief history of the LED– 1962 First practical LED (Holonyak, GE) 0.001 lumens
– 1960’s Red indicator LEDs
– 1970’s 7-segment displays
– 1980’s Green LEDs
– 1990’s “High brightness” blue (Nakamura, Nichia) 1 lumen
– 2000’s Illumination LEDs 100+ lumens100,000 times brighter than 1962
WHAT IS AN LED
• Solid State Lighting or SSL– semiconductor die or chip
– organically grown crystals
– “LED” – packaged device
WHAT IS AN LED
• Illumination LED’s in the raw produce a blue light
• White light is produced by coating the LED with phosphors of a yellow tone to produce a white light
• White light can also be produced using RGB mixing, expensive and complicated
WHAT IS AN LEDAn LED directly converts electricity into light.Apply a forward voltage Vf and current (mA) flows from p to n…
PITFALLS OF LED’S!
• Are they pitfalls or just new parameters?• New parameters mean CHANGE • Change tends to freak people out!
PITFALLS OF LED’S!
• High initial price: LEDs are currently more expensive, price per lumen, on an initial capital cost basis, than most conventional lighting technologies.
35w MR16 Accent Light $84.00 MR16 35w bulb $5.008.5W LED Accent Light $182.50 LED Retro Lamp $37.00
LED MR16 LED MR16
PITFALLS OF LED’S!
• High rate of malfunctions in outdoor fixtures.• A lot of manufacturers make bold claims that their bulbs
last 50,000 hours yet will only warranty them for 1-2 years.
• The color rendering of LED bulbs in a landscape setting can be less than desirable.
• Initial overall cost to retrofit is high vs. potential savings. (this gap is narrowing quickly and may be non relevant already)
DESIGN CONSIDERATIONS
• Voltage Drop– Each LED manufacturer has a different range for
acceptable voltage for lights to work properly – 7 to 18 volts on the extremes– 9 to 15 volts on average
DESIGN CONSIDERATIONS
• Wire size– We can use smaller wire size for the same number
of fixtures with equivalent light output.– 12AWG wire can handle 192 watts at 12 volts
• Equals five 35W incandescent fixtures
• Equals fifteen 12.2VA LED fixtures
DESIGN CONSIDERATIONS
• You can mix LED and incandescent– LED accent lights with incandescent path lights
COST COMPARISONS• Traditional Installation
Fixture Wattage Quantity Sugg. List
Total
Accent Light 35W 4 81.00 324.00
Wall Wash 50W 3 138.00 414.00
Path Light 25W 2 117.00 234.00
600 Watt Transformer
600W power 1 720.00 720.00
Wire 10ga 1 627.00 627.00
MR16 Lamp 5000 hrs8 x 4 fix
32 12.00 384.00
Bi Pin Lamp 2000 hrs20 x 3 fix
60 10.50 630.00
Wedge Base Lamp
4000 hrs10 x 2 fix
20 26.30 526.00
Total 340 Watts
$3859.00
COST COMPARISONS
• LEDFixture VA Quantity Sugg. List Total
Accent 11.8VA (8.4W) 4 150.00 600.00
Wall Wash 16.8VA (12.4W) 3 187.50 562.50
Path Light 6.4VA (4.5W) 2 125.00 250.00
200 Watt Transformer
200W power 1 297.50 297.50
Wire 12ga 1 350.00 350.00
Total 110.4VA80.2 Watts
$2060.00
COST COMPARISONSCurrent System Explanation LED System
340 Watts 80.2 Watts
0.34kW Kilowatts used per hour 0.0802kW
13,600kWh Multiply 40,000 hours of operation by kilowatts used
3208kWh
$1535.44 Multiply kilowatt hours used by national average cost of 11.29¢/kWh
$362.18
($84.07/year) (based on 6 hours use
per day)
Assuming no change in the cost of electricity - $1173.26
($19.83/year) (based on 6 hours use
per day)
COST COMPARISONS
Current System Explanation LED System
$972.00 Fixtures $1412.50
$1347.00 Transformer and Wire $647.50
$1540.00 Lamps $0.00
$1535.44 Electricity $362.18
Maintenance (?)
$5394.44 Total $2422.18
LED life cost is $2972.26 less
SUMMERY
• LED is coming to age• It is a green product in its manufacturing, Its
life cycle and its energy consumption• Benefits out weigh the pitfalls• Selection, quality and variety of fixtures is
increasing rapidly• Cost effective in the long run
SUMMERY
• Easy to design and install• Less call backs for repairs from customers• Don’t buy cheep or low cost LED’s they will
cost you an arm and a leg when its all said and done.
• Retrofit bulbs are worth looking at and will continue to improve with time
• Sean Mullarkey, Applied Water Technologies, Inc.• [email protected]• Cell 513-379-5780