brighten your future with led landscape lighting

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.


• Energy $$$$ savings– Uses 1/3 of the energy per lumen compared to

incandescent lamps• Maintenance $$$$ savings

– No bulbs to be replaced


• 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.


• 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


• 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

• L – light • E – emitting• D – diode

WHAT IS AN LED

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 light emitted forward

Heat Must be conducted away from LED!

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 LED

400nm 500nm 600nm 700nm

UV IR MicroWaves

TV RadioX-RaysGammaRays

CosmicRays

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!


• Number one Pitfall - The diode does not like high temperatures, end of story.


• 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


• Ridged in post installation modifications

Foot Candles Beam Width


• 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


• 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


• Wire lengthT 64ft

369ftT

175 W MR16

12.2VA LED


• You can mix LED and incandescent– LED accent lights with incandescent path lights


LEDLEDHALOGIN


• No bulbs to change with LED’s


• LED lights tend not to draw insects

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