The document compares the energy efficiency and cost effectiveness of different lighting options for a 43.56 sqm area with a 3.3m ceiling height. It analyzes CFL bulbs with copper chokes or electronic ballasts, as well as tubelights with electronic ballasts. CFL 18W bulbs with electronic ballasts provide 1150 lumens with 60.5 lumens per watt and require 52.63 hours of use to consume 1 unit of energy, for an investment of Rs. 170 per lumen over 8000 hours of life. Tubelights with electronic ballasts have higher efficacy and lifespan but also higher investment cost per lumen.

1. CFL an ENERGY SAVER ( ? )
• AREA : 12.1 X 3.6MTR ( 43.56 SQ MTR )
• CEILING HEIGHT : 3.3 MTR ( 11’ )
• COLORS : AS SPECIFIED BY ARCHITECT
• INTERIOR : AS SPECIFIED BY ARCHITECT
• LUMINARIES : STANDARD MAKE
• CHOKE : STANDARD COPPER
• BALLASTS : OPAL ELECTRONIC
• TUBELIGHTS : OSRAM LUMILUX PLUS (3250LM)
• CFL : OSRAM 18W ( 1150LM )

2. 2 x 18w Down lighter – 12 nos with CU chokes
5.32 w / sq mtr for 100 lux ( Rs. 5400.0 )

3. Triphospher tubes + electronic BALLAST – 9 nos
2.40 w / sq mtr /100 lux Rs. 4800.0

4. Triphospher tubes, fixture + ele BALLAST – 8 nos
2.35 w / sq mtr /100 lux ( Rs. 4268.0 )

5. Triphospher tubes,Louvertec Moreflector, ele ballast – 6 nos
1.84 w / sq mtr / 100 lux (Rs.4200.0)

6. 2 x 18w Down lighter – 12 nos with CU chokes
5.32 w / sq mtr for 100 lux ( Rs. 5400.0 )

7. COMPARISION
TYPE OF FIXTURES QTY WATTS Running LUX O/P INVESTMENT
cost / day
2 X 18W CFLcu choke 12 ( 24 ) 576 Rs. 45.0 Rs. 5,400.0
249
1 X 36 triband + 9 nos 297 Rs. 23.0 Rs. 4,800.0
284
electronic ballast
1 x 36 triband + Rs. 20.6 257 Rs. 4,268.0
8 nos 264
electronic ballast
1 x 36 OPAL &
LOUVERTECH MO 6 nos 198 Rs.15.50 247 Rs. 4,200.0
REFLECTOR +
LUMIUX PLUS T/L

8. Why pay more ?
ITEM Lamp T8 CFL
Glass used 100% 23%
Mercury 5mg > 2mg
Rare Earth Triphosphor 100% > 30%
End cap Material More Less
Filament More Less
Packing Material More Less
Shipping cost More Less
Storage Space More Less
Total Material 100% 25%
Efficacy of Lamp Lm/W 104 80
Energy required for production 100% > 30%
Cost of Lamp Rs.75/- Rs.100/-

9. Why pay more ?

10. Why pay more ?
invest
Guara Time in
0.14
475 App Efficasy one year
33 Avg
0.75w
16000
3300
100w
80 ment
Total energy Output Color ntee Invest hours
Type of lamp ballast Lumens / life per
consumption Lumens CRI on ment required for
loss W hours lumen
lamp 1 unit
in Rs.
9 w CFL Cu
Choke 5w 14 w 700 50 8000 80 -- 160 0.22 71.42
11w CFL Cu
choke 5w 16 w 900 56.25 8000 80 -- 185 0.2 62.5
18 w CFL Cu
choke 5w 23 w 1150 50 8000 80 -- 220 0.2 43.47
36 w CFL Cu
choke 14 w 50 w 2900 52 6000 80 -- 385 0.15 20
9 w CFL ele one
Choke 0.25 w 10 w 700 70 8000 80 year
110 0.15 100
11w CFL ele one
choke 0.25 w 11 w 900 81.81 8000 80 140 0.15 90.9
year
18 w CFL ele one
choke 0.25 w 19 w 1150 60.5 8000 80 170 0.15 52.63
year
36 wCFL OPAL one
ele ballast 0.75 30.5 2900 95 10000 80 year
690 0.23 32.7
40 w T/L Cu
choke 14 w 54 w 2400 44.44 4500 60 -- 190 0.07 18.5
36 w
Triphposher one
TL OPAL ele 0.75 33 w 3200 100 18000 80 year
475 0.14 30.3
ballast