LED light bulbs vs flourescent light bulbs - electric consumption

[Phoenix67]

I am maintaining a duplex for bodega. I keep this bodega lighted (4 locations) for nearly 24/7 unless we find time to turn off the lights during the day. So it was my ultimate goal to look for alternative ways to save electricity for this bodega. I use more efficient flourescent bulbs before and then a month or more ago I turned to LED bulbs.

The following are my observations:

Flourescent bulbs:
Jan 2012 - usage 71kwh, bill P668.36
Feb 2012 - usage 52kwh, bill P408.83
Mar 2012 - usage 40kwh, bill P284.87
Apr 2012 - usage 77kwh, bill P776.10
May 2012 - usage 56kwh, bill P496.37
Jun 2012 - usage 42kwh, bill P296.14

LED bulbs:
Jul 2012 - usage 22kwh, bill P113.82

We shifted the use of LED bulbs mid if not late Jun that is why the Jun bill was also low. March was low because we manage to turn-off the bulbs in most mornings.

July bill dropped significantly, even if we almost never turned the lights during the day. We will see if the August bill will be same as July or even be lower.

The cost of the bulbs was twice than the flourescent but if the rate of savings continue, it will pay-off in about 4-6 months.

[userfriendly]

Can you pls share where you bought the LEDs? Are these the replacement for 36 watts f or 20watts FL? I also want to change over to LEDs to save. Electicity prices are crazy.

[SiRbossR]

are those LED bulbs really bright? let say brighter than a standard fluorescent lamp?

[fourtheboys96]

are those LED bulbs really bright? let say brighter than a standard fluorescent lamp?

I've seen a lot of LED bulbs here in Japan and it seems there is no difference in terms of brightness.

Was tempted to buy one here but it is rated at 100v. In Manila, I also looked for one but I only found some unknown brands.

For an ordinary bulb, it can set you back Php1000.

[Phoenix67]

The brand I used was GES 9w led light bulbs - GES 4th generation LED lights

I think they are not as bright as your 36watts flourescents but for the 20watts it should be near.

Can you pls share where you bought the LEDs? Are these the replacement for 36 watts f or 20watts FL? I also want to change over to LEDs to save. Electicity prices are crazy.

[holdencaulfield]

sa aquarium nadidiliman ako sa LED unlike the conventional fluorescent. and how much yung LED?

[robot.sonic]

lagyan mo na rin ng light sensor para pag maliwanag mag ooff ng automatic.

kaya todo advertisement ni meralco ngayon ng mga induction cooker kasi madami na nagtitipid ng kuryente.

[crazy_boy]

Ako bumili na din ako ng LED bulb na replacement for ccfl. Maraming brands na ngayon sa ace or handyman. May GES brand, nxled, akari, omni, philips, etc.

Important thing sa LED is the bulb kung anong generation na and yung heat sink. Heat will shorten the life of he LED. Mas maganda yung fin type na aluminum yung heat sink. Important factor din yung warranty. Yung iba 5 years warranty nga pero may limit sa number of exchanges. Sa pagbili naman, usually computation is lumens per watt. Siyempre higher the better.

Ang nabili ko na is yung 7w na nxled which is 630 lumens. And 8w na omni which is 680 lumens. Both are way brighter than my old 20 watt spiral/tornado ccfl

[Phoenix67]

.....Important thing sa LED is the bulb kung anong generation na and yung heat sink. Heat will shorten the life of he LED. Mas maganda yung fin type na aluminum yung heat sink. ...

In my search, it seems that the 220v AC power is converted to the working voltage of the bulb by the use of a bridge rectifier diode, some capacitors, a resistor and probably a voltage regulator IC. The resistor will dispate power through heat (so theres the need for the heat sink) and sometimes even the voltage regulator IC will also need a heat sink to dispate the heat.

With this, I would say that the reason for early failure for LED light bulbs is most likely because of the failure nitong electronic components na eto before the failure of the LED per se.

LEDs generally work on 1.5v to 5v (higher voltage will require a resistor), hindi ako sure kung ganito lang din kababa ang voltage requirement ng fourth generations LEDs.

[oj88]

I was bored, so I did some informal bulb comparison tests. I compared four light bulbs (1x LED and 3x CFL) to see how they perform against each other.

Again, these results should not be taken as absolute. I did these experiments using parts I already have so your mileage may vary. For instance, a spiral CFL will almost certainly yield more light output, Watt for Watt, compared to the straight-tubular CFLs.

From left to right: 7W LED, 11W CFL, 20W CFL, and 23W CFL (all are designated as daylight)


The camera settings for the pictures below were set to full manual. The EXIF data are essentially identical, save for the time and date stamps. In all of the shots, the light sources were affixed to the ceiling and were about 2 meters away from the subject.

7W LED


11W CFL


20W CFL


23W CFL


The four pictures have identical EXIF data:

Camera Make: Canon
Camera Model: Canon EOS 650D
Resolution: 1024 x 768
Flash Used: No
Focal Length: 18.0mm (35mm equivalent: 29mm...
CCD Width: 22.71mm
Exposure Time: 0.400 s (1/3)
Aperture: f/16.0
ISO Equiv.: 1600
Whitebalance: Auto
Metering Mode: pattern
Exposure: Manual
Exposure Mode: Manual

Here are my personal observations:
1. First, the obvious. In my test, the 7W LED bulb is about as bright as the 20W CFL.
2. The LED bulb has a slightly warmer color (ie. less washed-out) compared to the CFLs. But it's subtle enough to be perceptible only when the pictures are compared side-by-side
3. If you decide to stick with CFLs, always get the spiral-type. They're more expensive but they are also more efficient compared to straight-tubular CFLs.

[Retz]

^

parang mas interesado ako doon sa london olympics bear mo brad.

[4TUNER]

maganda lang to sa mga more than 8 hours of use other than that CFL na lang.... gumagamit din ako LED pero strip type, kaya lang for emergency purpose (brownout) pair with a spare car battery, LED strips located on specific spot indoor and outdoor....

[crazy_boy]

I've seen a lot of LED bulbs here in Japan and it seems there is no difference in terms of brightness.

Was tempted to buy one here but it is rated at 100v. In Manila, I also looked for one but I only found some unknown brands.

For an ordinary bulb, it can set you back Php1000.

Mura lang ngayon. Nasa 700 peso range nalang yung 7w na 630 lumens. Pag GES brand, mas mura pa ng konti. Tapos 5years warranty siya. And 4th gen LED na din. Pag lumang generation, madalim and hindi reliable.

[renzo_d10]

700 isang piraso? Grabe ang mahal pala.

Gusto ko sana palitan yung mga bulbs sa chandelier para mas matipid.

[fourtheboys96]

700 isang piraso? Grabe ang mahal pala.

Gusto ko sana palitan yung mga bulbs sa chandelier para mas matipid.

IMO, LED bulbs is practical if you will use it for an extended period of time (e.g. 24/7, overnight daily, etc)

Otherwise, I will personally just use CFL due to price difference.

[crazy_boy]

700 isang piraso? Grabe ang mahal pala.

Gusto ko sana palitan yung mga bulbs sa chandelier para mas matipid.

Yes 500-700 pesos ang isang piraso na 7w. Pag 5w mas mura. Sulit lang talaga ang LED if:
1. 24/7 naka on yung ilaw (or atleast 12hours a day). Pag 24/7, few months lang ROI ka na.
2. Wala pang ilaw na nakakabit. Kasi pag meron ng cfl then papalitan mo, sayang yung existing na bulb.

[Retz]

LED bulbs plus skylight para tipid sa kuryente.

[userfriendly]

Meron ding LED bulbs sa cd-r king. Dunno if these are reliable.

Baka one week warranty But seriously, I looked it up in cdrking website and it says replacement for 40 watt incandescent bulb. If thats the case, better just buy a 8 watt cfl bulb.

LED bulbs plus skylight para tipid sa kuryente.

Yeah skylights are great for natural lighting. Only downside is heat gain if its not done correctly. I had this experience when I used the plastic transparent corrugated sheets for sky lights. Heat gain was too high and I covered it up with insulation after a few weeks.

[Retz]

Baka one week warranty But seriously, I looked it up in cdrking website and it says replacement for 40 watt incandescent bulb. If thats the case, better just buy a 8 watt cfl bulb.



Yeah skylights are great for natural lighting. Only downside is heat gain if its not done correctly. I had this experience when I used the plastic transparent corrugated sheets for sky lights. Heat gain was too high and I covered it up with insulation after a few weeks.

sa mga high ceiling it is feasible. huwag lang sa mga low ceiling ung skylight. tatagos talaga ung init.

[oj88]

More than half of the light bulbs in my home has been changed out to LED bulbs of varying wattages (3, 4, and 7W). I'm using two brands; NxLED and GES.

Rough comparison of light intensity between LED and CFL:

7W LED = 20W CFL
4W LED = 11W CFL
3W LED = 9W CFL

These are all 4th generation LEDs, or so I've been told.