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Environmental
Release of Mercury from Broken Compact Fluorescent Lamps |
New paper from Li & Jin published in ENVIRONMENTAL
ENGINEERING SCIENCE Volume
28, Number 10, 2011; DOI:
10.1089/ees.2011.0027 |
"... in
most cases, one broken CFL could cause the Hg vapor concentration
in such a room to exceed the safe level for children
if the room is not vented"
"Total
amount of Hg vapor released from a broken CFL can exceeds 1.0 mg, which can
cause Hg level in a regular room to exceed the safe human exposure limit
under poor ventilation conditions."
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|
The Luxim light emitting Plasma lamp |
A new technology that brings back
memories of the defunct
sulfur lamp technology |
 |
|
Ja zur
Glühlampe! |
A PDF presentation by Alexander
Wunsch |
In German! Hat tip to René Turpel. |
|
Strahlende Zwischenbilanz |
A test of 12 CFL's from the German
magazine "Guter Rat", nr.11/2009 (PDF scan). Online shortened version
here. |
Noticeable is the long delay to reach
full brightness (up to 20 Minutes for an Ikea lamp) in cold temperatures and
the relatively poor resistance to switching (as low as 3100 for a CMI lamp) |
|
CF lamps and UV
radiation |
A short research paper on the emission of
ultraviolet radiation by CFL's. |
By F. Massen |
|
A reply to a comment by Prof. Siebentritt |
A short reply to a
comment by Prof.
Dr. Susanne Siebentritt from the University of Luxembourg |
By F. Massen |
|
Power
Factor and Harmonics |
A report with real measurements on 3
lamps (1 incandescent and 2 CFL's) researching the problems of power
factor, apparent and reactive power. |
By F. Massen, J. Mootz and C.
Baumann. |
|
Abschied von der Glühlampe bringt höhere Netzbelastung |
 |
Very interesting technical article by J.
Blum from the German journal
Elektropraktiker, no. 6, 2009.
Thanks to Guy Schintgen for
sending this eye-opener. |
Sparlampen
Schlussbericht ( in German)
 |
A
report on a test bed from the Swiss
agency for efficient energy use (2003).
 |
"Die konventionelle
Glühlampe wurde als Referenz für die Beurteilung der
Sparlampen nach denselben Kriterien ausgemessen. Dass sie hier als
knapp „ungenügend“ abgeschnitten hat, liegt an der kleinen
Lebensdauer und der schlechten Energieeffizienz, die im Sparlampentest
zentral sind. Interessant ist
festzustellen, dass die Glühlampe länger brannte als
angenommen (ca. 1‘500 Stunden statt 1'000) und dass sie in Bezug
auf Schaltfestigkeit locker mit
den besten Sparlampen mithalten kann: keine
Ausfallprobleme nach 65'000 Schaltungen. Glühlampen können v.a.
in Räumen mit sehr kurzen Betriebszeiten (weniger als 30 Minuten pro
Tag) empfohlen werden, z.B. in Kellerabteilen von Wohnhäusern"
Surprise: Low cost IKEA CFL is among the best!
Watch especially the
resistance to switching (p. 12 to 14).
Read also here
and here |
|
Inside
a 230 VAC white LED lamp |
Article
by F. Massen, 08 March 09 |
A
dead 21 Led's lamp is put to pieces. Have a look at the inside
electronics. |
| A
life cycle analysis of CFL's and incandescent bulbs |
Original
article from http://thewatt.com
and discussion by F. Massen |
|
| Did
you know? |
Comments
on CFL's by Raoul Tholl and Francis Massen |
ongoing
chapter! |
|
Vu1
ESL technology |
Electron
Stimulated Luminescence, hype or promise?
Read also here!
|
The
technology works by using accelerated electrons to stimulate a phosphor
coating on the inside of the glass bulb. |
| Eden
Park
microplasma
lightning |
Flexible
sheet lamps based on cavities holding a microplasma . |
|
| Fluorescent
Lamp
Basics |
An
authorstream presentation from Philips |
There
is some fashionable enviro jargon you might object: in that case, just look at slides 20 to
35 which very nicely show the making and working of a double ended
fluorescent lamp. |
| Lamp
spectra |
 |
This
picture nicely shows that the old incandescent bulb has a thermal
continuous spectrum, whereas the CFL has the classical mercury vapor
discrete spectrum.
The Philips 15W CFL fares much better than the Ikea lamp, but will give a
slightly blue color.
More details here. |
The
world first OLED lamp
(Osram, design
Ingo Maurer, April 2008) |
 |
OLED's
(organic Light Emitting Diodes) are another candidate for the solid-state
lightning sources of the future. OLED's are used in small flat displays,
but still suffer from many problems as a low efficiency of 20 lumen/Watt
and a short lifetime.
Nevertheless big research is going on in developing flexible, large
flat surface OLED lamps.
More on this here.
Watch a YOUTUBE video from GE "GE
OLEDs - the future of lighting"
here
and a demo
here. |
| The
economics
of low-energy bulbs |
A
comment on a chapter in Prof. MacKay's book "Sustainable Energy -
without the hot air" |
|
|
This
was not the right application for a compact fluorescent light. |
A
comment in EDN (Electronics Design) |
CFL's
don't like hanging down! |