Monday, August 31, 2009

Energy Saving Light Bulbs Offer Dim Future

Light Bulb Test Photo: JULIAN SIMMONDS

From The Telegraph:


Energy saving light bulbs are not as bright as their traditional counterparts and claims about the amount of light they produce are "exaggerated", the European Union has admitted.

Soon they will be the only kind of light bulb allowed, but now officials in Brussels have admitted that energy-saving bulbs are not as bright as the old-fashioned kind they are replacing.

From tomorrow a Europe-wide ban on traditional incandescent bulbs will begin to be rolled out, with a ban on 100W bulbs and old-style frosted or pearled bulbs.

Read more ....

2 comments:

Anonymous said...

Thomas Edison
Invented the lightbulb. Without it he couldn't see how to work his phonograph.

Incandescent
Mrs Edison was very, very cross at the amount of time her husband was spending in the outhouse.

Filament
What Mr Edison's marriage hung by.

Electric current
Early attempts to fit dried fruit with a plug failed to produce much illumination.

Voltage
You have to be over 18 to buy a bulb.

Screw fitting
We advise you to ignore this advice and use your hands instead.

more at http://www.thebeginners.net

Lighthouse said...

It is extraordinary to ban a safe popular product,
instead of dealing directly with any energy and emission problems.
See http://www.ceolas.net/#li1x onwards

The particular error of banning 100W+ ordinary bulbs is that bright CFLs or LEDs are comparatively difficult and expensive to make,
and the high wattage heat effect is not necessarily wasted (room heat substantially rises towards the ceiling by convection, and spreads downwards from there).

Banning frosted lights smacks of particularly unwarranted EU pettiness, for any marginal savings involved.
Clear lights (including halogens) have a strong glare - hence the overwhelming popularity of frosted lights for ceiling use.

Another problem is that small bright CFLs and LEDs are difficult to make, so that candle/golfball lights are bulkier and may not fit some lamps.

Supposed savings don't hold up for many reasons:
Just a few examples here: CFL Lifespan is lab tested in 3 hour cycles. That does not correspond to real life usage and numerous tests have shown real life type on-off switching reducing lifespan. Leaving lights on of course also uses up energy, as does the switch-on power surge with CFLs
Also, CFLs get dimmer with age, effectively reducing lifespan

Power factor: Few people know that CFLs typically have a power factor of 0.5 - that means that power stations use up twice as much power than what the CFL rating shows. This has to do with current and voltage phase differences set up when CFLs are used.
Although consumers do not see this on their meters, they will of course have to pay for it on their bills.
This is explained with official links including to US Dept of Energy here: http://ceolas.net/#li15eux

Emissions?
Does a light bulb give out any gases?
Power stations might not either:
Why should emission-free households be denied the use of lighting they obviously want to use?
Low emission households already dominate some regions, and will increase everywhere, since emissions will be reduced anyway through the planned use of coal/gas processing technology and/or energy substitution.