03_energy efficient lighting
Post on 14-Apr-2018
227 Views
Preview:
TRANSCRIPT
-
7/30/2019 03_energy Efficient Lighting
1/22
The Energy
Efficient
-
7/30/2019 03_energy Efficient Lighting
2/22
With the advancement of technology, theworld has become too much dependenton artificial lighting. In fact, to light up the
world with electricity, it has beenestimated that 2.1 trillion kilowatt-hour
lighting alone or the equivalent of 1000power plant. This means that for lighting
alone, the world emits an additional2,893 million tons of CO2 annually inthe atmosphere for the generation of
electricity.
-
7/30/2019 03_energy Efficient Lighting
3/22
In the Philippines, the Department ofEnergy (DOE) estimates that at least154 billion kilowatt-hour of energy will
be needed in the next decade forlighting, unless the market and theend-users transform fast enough to
more efficient lightings, thePhilippines may contribute as muchas 84,546,000 tons of CO2 in the
greenhouse gas emission during this10-year period.
-
7/30/2019 03_energy Efficient Lighting
4/22
2. OBJECTIVES
a. This presentation aims to encouragethe lighting users to be a catalyzing
force to accelerate the obsolescenceof inefficient lightings.
.type of lighting fixtures and generatesavings on energy expenditures,enhance energy security andcontribute to global effort to slowdown global warming.
-
7/30/2019 03_energy Efficient Lighting
5/22
3. Discussion
Generation of electricity is one of thelargest source of CO2 emission in the
world. The combustion of fossil fuel suchas coal is the primary source ofemission. Coal su lies 57% of the total
energy harnessed to generate electricity.Presence of too much CO2 in theatmosphere will create greenhouse
effect on earth which in turn causeglobal warming and climate change.
-
7/30/2019 03_energy Efficient Lighting
6/22
3.1 Definition of termsLuminous Flux
All the radiated power emitted by a light
source and perceived by the eyes.
-
7/30/2019 03_energy Efficient Lighting
7/22
ILLUMINANCE/ILLUMINATION
The measure of the amount of lightfalling on a surface. Unit ofmeasurement- LUX
-
7/30/2019 03_energy Efficient Lighting
8/22
Luminous Efficacy
Refers to the efficiency withwhich the electrical powerconsumed is converted into li ht.
The unit of measurement islumens per watt (lm/w).
-
7/30/2019 03_energy Efficient Lighting
9/22
3.2 Most Commonly Used Types of
Lamps Today.a. Incandescent Lamps
Produce light by the passage of anelectric current through a filament whichheat it into incandescence.
. ec r c sc arge ampsProduce light by the passage of anelectric current through a vapor or gas.
- Low intensity discharge lamps.
- High intensity discharge lamps.
-
7/30/2019 03_energy Efficient Lighting
10/22
The fluorescent lamps A glass tube coated with phosphor on its
inside surface and filled with argon gas or
sometimes a mixture of argon and kryptonwith a small amount of mercury inside.
Types of fluorescent lamps
T12 38 mm diameter T 10 32 mm diameter
T 8 - 26 mm diameter
T5 - 16 mm diameter
T2 - 7 mm diameter
-
7/30/2019 03_energy Efficient Lighting
11/22
Linear Tubular Fluorescent Lamps
The most common used old type 1.2 m
40 watt fluorescent lamp (F40T12) is filledwith argon gas. It uses halophosphorcoatin . The newer 36 watts T8 FL has
basically the same construction althoughsmaller in diameter and is filled with argon orsometimes mixture of argon and krypton. Its
coating is either halophosphor or triphosphor.
The newest T5 uses only triphosphor.
-
7/30/2019 03_energy Efficient Lighting
12/22
Advantage of using triphosphor lamps
Fluorescent coating is subjected to naturalageing during its lamp life which results into
decrease in luminous flux, but with the useof triphosphor coating, this disadvantagehas been minimized and 90% of its luminous
ux s ma n a ne even a er , rs ooperation. In addition triphosphor lampsensures lower power consumption to
generate more light, and fewer lamps toproduce same brightness.
-
7/30/2019 03_energy Efficient Lighting
13/22
Linear fluorescent lamp comparison
No. Parameters 28 W T8TriphosphorFluorescent
Lamp
32 W T8TriphosphorFluorescent
Lamp
32 W T8Standard
FluorescentLamp
36 W T8TriphosphorFluorescent
lamp
36 W T8Standard
FluorescentLamp
40 W T12Standard
FuorescentLamp
1 Rating 28 W 32 W 32 W 36 W 36 W 40 W
2 Length 1.2 m 1.2 m 1.2 m 1.2 m 1.2 m 1.2 m
3 Diameter 26 mm 26 mm 26 mm 26 mm 26 mm 38 mm
4 Life Time 26,000 20,000 20,000 20,000 8,000 8,000rs. rs. rs. rs. rs. rs.
5 Luminousflux
2725 lm 2950 lm 2700 lm 3250 lm 2600 lm 2500 lm
6 Efficiency 97.32
lumens/watts
92.18
Lumens/watts
84.38
Lumens/watts
90.27
Lumes /watts
72.22
Lumens/watts
62.50
Lumens/watts
-
7/30/2019 03_energy Efficient Lighting
14/22
T5 Linear fluorescent lamp
One significant change introduce in thissystem is the lamp length and wattagesare different to those available with
either T8 or T12 fluorescent lamps.These lamps available in lengths whichare approximately 50 mm shorter than
lamps.
T5 lamps are more environmentallyfriendly than T8 or T12 because of itsreduce diameter thus reduce mercurycontent.
-
7/30/2019 03_energy Efficient Lighting
15/22
Compact Fluorescent Lamp (CFL)
By the name itself CFL are basically
fluorescent lamps with phosphor coatinginside and little amount of mercury with
- .
shape and appearance, CFL can be fittedin a standard E27 screw-in socket and itcan be directly substituted to anincandescent bulb.
-
7/30/2019 03_energy Efficient Lighting
16/22
Comparison between CFL and
Incandescent Lamps
Types oflamp
Wattage Rating and Equivalent AverageLight Output
Averagelife in hrs.
CFL 5 Wto 6W
7 W to8W
9 WTo
12 W
13 WTo
14 W
15 WTo
18 W
22 WTo
23 W
5,000To
8,000
Light output inlumens
240To
260
350To
400
460To
570
760To
800
820To
990
1280To
1300
Incandescentlamp 25 40 50 60 75 100 750To 1000
Light output inlumens
200 390 520 720 890 1300
-
7/30/2019 03_energy Efficient Lighting
17/22
Energy Efficient Fluorescent
BallastTo generate light output from fluorescent
lamp, ballast is needed. Good qualityballast accounts for 15% of lamp andballast energy consumption while poor
u y u30% . It is therefore very important toconsider energy efficient ballast when
choosing lamp and ballast combination.
-
7/30/2019 03_energy Efficient Lighting
18/22
Ballast Loss Comparison
Type of Ballast 18/20 wattsFluorescent Lamp
36/40 wattsFluorescent Lamp
ConventionalElectromagnetic
10-12 watts 12-20 watts
Low-lossElectromagnetic
6-8 watts 6-8 watts
Electronic 2-4 watts 2-4 watts
-
7/30/2019 03_energy Efficient Lighting
19/22
Cost Effectiveness in Re-lamping
using efficient lightingsReplacing 2 x 40W T12 FL with 2 x 32 W T8
FL electronic ballast
Existing2 x 40W FL
Replacement2 x 32 W FL
No of fixtures considered 500 500
Total lamp and ballast wattage 100 70
Total light load ( kW) 50 kW 35kW
Ener consum tion @ 6000 hrs/ ear 300,000 kWh 210,000 kWh
Energy savings per year 90,000 kWh
Annual monetary savings @ Php 10/kwh P900,000.00
Investment
32W FL costs Php 250.00/pc 250,000.00
Electronic ballast @ Php 1000/pc. 500,000.00
Total investment 750,000.00
Payback (years)0.8 YEAR
-
7/30/2019 03_energy Efficient Lighting
20/22
LED Light Emitting Diode
The newest lighting technology in the markettoday are the LEDs. It is known as thegreen light because it does not containharmful gasses and more environmentfriendly.
application within the lighting community.Research of many companies areunderway to deploy LEDs even further.The ultimate goal is to move this speciallight source into common usage forgeneral lighting.
-
7/30/2019 03_energy Efficient Lighting
21/22
Recommendation
Stop using inefficient lights now
Lets retrofit our lighting systemtoday and contribute to the globaleffort to slowdown lobal
warming.
LETS GIVE OUR CHILDREN A
SAFE ENVIRONMENT TO
LIVE IN.
-
7/30/2019 03_energy Efficient Lighting
22/22
Engr. Amando D. Lanuza, PEEamanlanuza@yahoo.comReference: MANUAL OF PRACTICE ON EFFICIENT LIGHTINGPublished by: IIEE,inc. and DOE
top related