Imagine calling a fluorescent bulb Tru Dim 😉 (it’s dimmable, apparently, and full of fun components)# # # # # #Following on from the post about renowned lighting designer Howard Brandston's Mondo article, he has also updated his website commentary, with a letter to Consumer Reports (that they did not publish) Excerpts, my highlights:The design of lighting is the creation of a system to light a space. When you take the total energy used to light many typical spaces, including the lighting controls, the total connected load and energy consumed when using incandescent light sources the result is, in many cases, equal to or more efficient than the new sources you are touting. Then you make a serious technical error when you state that lumens measures brightness. Lumens are a measure of radiant energy in the visible spectrum – not brightness. More lumens do not mean more brightness or visibility – nor that you will prefer the light illuminating the scene or object it is falling upon. What is critical in this case is the Spectral Power Distribution of the light source. In this case, when evaluated by most viewers, the incandescent light bulb wins – most of the time. That does not mean there are not several applications where alternative light sources perform perfectly well and are preferred. But to ban the incandescent light bulb is a serious detriment to the design of good lighting for many applications. People will sort that out by themselves without the help of legislation.... Sincerely, Howard M. Brandston, FIES, Hon. FCIBSE & SLL, FIALD, LC.Comment As covered previously here, Lumens are replacing Watts as the new standard for buying light bulbs by (supposedly) brightness... CFLs and LEDs have spiky emission spectra, so strong brightness in single pure light colors might confuse the measurements, compares to the smoother, broader, light color emissions as with incandescents. There are a lot of reasons why CFLs and LEDs seem dimmer than their lab rated values... more on CFL brightness here (http://ceolas.net/#li15rbx), and some additional notes on LED brightness (http://ceolas.net/#li15ledax).
Send Your Light Bulbs To Washington
All light bulbs have usage advantages. People should feel perfectly free to use and enjoy CFLs and LEDs along with incandescents.
But pushing the use of any bulb is wrong: And CFLs are being pushed on consumers, in energy saving campaigns, in CFL replacement programs, and lately also via regulations, as the only practical replacement alternative, which also happens to be more profitable for the light bulb manufacturers.
"Hey, you can still use energy efficient incandescents like Halogens, and LEDs that show such promise!!" Certainly - as said - all light bulbs have their advantages. But that does not make them worthy replacements.
Replacement Halogen and similar incandescents are still different from simple incandescents in light quality and other respects, apart from costing much more for marginal savings, which is why neither consumers or politicians like them much. No "Halogen replacement program" in any American state!
Besides: All known general service incandescents including touted Halogens will progressively be banned on the enacted EISA 45 lumen per W end regulation standard. That's right. The politicians don't tell you that. USA regulations including updates on repeal bills in local states (legislated Texas June 2011)
LEDs meanwhile have still greater differences, cost much more, and have particular development issues around brightness, omnidirectionality, and broad spectrum light quality.
That is why the replacement push is to use CFLs - as also seen in post-ban Europe. Unfortunately, whatever the CFL energy saving advantages, politicians also choose to hide, obfuscate, or ignore the disadvantages relating to this type of lighting.Therefore this blog seeks to highlight some of these issues, with appropriate references. Not least of which is the issue of CFL disposal:
Improper disposal of compact fluorescent light bulbs is dangerous to your family and to the environment. In some states, it is illegal to put these light bulbs in your trash. It's easy to dispose of compact fluorescent light bulbs properly. Just send them to your Senator or Congressman in Washington. Or send them to the EPA.