PL Lamps Versus Filament

[HB13DISH]

Trying to go green as much as possible, so I started to look into changing filament lamps at home to PL type.
According to the list in Osram website:
_http://www.osram.com/osram_com/Consumer/Home_Lighting/Energy_saving_lamps/Product_overview/OSRAM_DULUX_SUPERSTAR__10-year_life_/OSRAM_DULUX_SUPERSTAR/index.html

Relevant wattage for me are the 75W and 100W.
According to the table on the page, 75W can be replaced by 16W and 100W by 21W
Bought a 16W PL (warm white) to check and the light it gave was not anywhere near 75W. More like a 40W.
Any comments about the PL lamps and if anybody has changed all the lamps to PL in his house.
I am sure that there is some saving in electricity bill, but the question is whether you get the same light intensity that you are accustomed to.
Will buy a 120W equivalent (24W) and see if it is anywhere like a 75W.
The cost of the 16W was 30 NIS and a 75W filament 2.5 NIS which means I need to replace 12 bulbs to justify the price of the PL.
But the saving in the electricity bill should make it breakeven within few months.
Just a quick example
75W on for 8 hours a day = 600 W-h
24W on for 8 hours a day = 192 W-h
Difference 600-192=408 W-h
Saving in a month:
x30 days in a month = 408x30=12240 W-h or 12.24 kW-h
Electricity bill Rate 0.5 NIS / kW-h
Saving in electricity 12.24x0.5=6.12 NIS/month
cost of 24W PL ~40 NIS
Which means ~ 6.5 months to break even the cost of the lamp, but the lamp is supposed to have a 6000 hours life so there is saving in the long run.

 

[Topper]

That is all very well however isn't it that type that actually are made using mercury and need to be disposed of correctly to avoid polluting the world with mercuric oxide? Like everything in life there is a trade off but in saving energy to be greener you will be when disposing of the unit, counteracting that benefit.

Also I have found a large number of the lamps take a while to build up to the correct lux output

 

[PoloMint]

Yes, as Topper says these lights take a good few minutes of being on before they are at their full brightness.

I've changed 60W filament bulbs for 18/20W CFL ones and, once warm, I think the low energy ones might be slightly brighter than 60W filament ones.

 

[mhku]

The bluer ones (around 5000k?) give me an instant headache- try one out before you kit your whole house in them.

 

[pgh13]

I find CFLs are fine for hallways etc. where you may have the light on for long periods and are just passing through, but don't really like the quality of light for reading/eating/realxing. It still seems to have that flourescent quality. Just my opinion, so try a couple and see how you feel!

 

[HB13DISH]

A little update.
Changed 100W filament lamps with 120W (23W) PL
75W filament with 100W (20W) PL
Warm White type by Osram.
When switched on, the light is dimmed and after about a minute or two it gets much brighter. Need to get used to this.
I am quite happy with the change for the time being. Wonder if it will also give me headache as mhku mentioned.

 

[Llew]

On a slightly different tack, I bought one of those multi-led white light reading lamps for my PC desk top, and find it lessens eye-strain having it on without having to rely on the main lighting in the room ( a CFL job). It gives out a near - daylight illumination, with no AC flickering.

Llew

 

[HB13DISH]

On a slightly different tack, I bought one of those multi-led white light reading lamps for my PC desk top, and find it lessens eye-strain having it on without having to rely on the main lighting in the room ( a CFL job). It gives out a near - daylight illumination, with no AC flickering.



Llew

Thanks Llew.
Please check the URL.

 

[Llew]

Should take you HERE

I've deleted the other link, seems a little buggy.

Llew