Probably a FAQ but here goes...

What is the relative HEAT output from one of these bulbs?
I'm presuming a '20W Energy use/100w Brightness' saver bulb puts out little
heat and is perfectly safe to use with a '60W Max' dangly paper lampshade.

But wanted to check... :+/

What is the relative HEAT output from one of these bulbs?
I'm presuming a '20W Energy use/100w Brightness' saver bulb puts out
little
heat and is perfectly safe to use with a '60W Max' dangly paper lampshade.

When you consider the 60W Max, you can consider it to be actually 60W. You
are unlikely to get a CFL bulb considerably more than 20W, so all CFL bulbs
would be suitable, provided it physically fits within the space available.

You can hold a 20W CFL bulb in your hand when fully up to temperature,
although it will be pretty hot. It won't burn or scorch paper, though.

Christian.

Mark Wood wrote:
Probably a FAQ but here goes...

What is the relative HEAT output from one of these bulbs?
I'm presuming a '20W Energy use/100w Brightness' saver bulb puts out little
heat and is perfectly safe to use with a '60W Max' dangly paper lampshade.

But wanted to check... :+/

About 6-8W or so comes out of them as light, the remaining as heat.
Maybe half the heat comes from the ballast, and half from the tube.
The surface temperature of the tube is often around 100C.

"Mark Wood" wrote in message
...
Probably a FAQ but here goes...

What is the relative HEAT output from one of these bulbs?
I'm presuming a '20W Energy use/100w Brightness' saver bulb puts out
little
heat and is perfectly safe to use with a '60W Max' dangly paper lampshade.

But wanted to check... :+/

They don't get anywhere near as hot as an incandescent bulb so you should be
ok.

--
Malc

On Thu, 23 Dec 2004 16:33:34 GMT, Mark Wood wrote:

I'm presuming a '20W Energy use/100w Brightness' saver bulb puts out
little heat and is perfectly safe to use with a '60W Max' dangly
paper lampshade.

Think of the filament lamp rating as the maximum input 60W of energy
turned into heat. So provided what ever you put in there has a rating
less than 60W you are safe.

--
Cheers
Dave. pam is missing e-mail

In article ,
Ian Stirling writes:
Mark Wood wrote:
Probably a FAQ but here goes...

What is the relative HEAT output from one of these bulbs?
I'm presuming a '20W Energy use/100w Brightness' saver bulb puts out little
heat and is perfectly safe to use with a '60W Max' dangly paper lampshade.

But wanted to check... :+/

About 6-8W or so comes out of them as light, the remaining as heat.
Maybe half the heat comes from the ballast, and half from the tube.
The surface temperature of the tube is often around 100C.

Ballasts are quite efficient nowadays. Most heat comes from the tube,
where a number of laws of physics still contrive to severely limit the
efficiency.

--
Andrew Gabriel

Mark Wood wrote:

Probably a FAQ but here goes...

What is the relative HEAT output from one of these bulbs?
I'm presuming a '20W Energy use/100w Brightness' saver bulb puts out little
heat and is perfectly safe to use with a '60W Max' dangly paper lampshade.

But wanted to check... :+/



Think that incandescent bulbs are about 1% efficeint, so 60W bulb is
about 59.5W heat.

Think the energy ones are about 3 times trhat - so maybe 3 rtimes as
efficeint, at 3%, so 20W in abouty 19watts out...

They bulb makers lie buy the way. I have 60W lights and 60W equivalent,
outside, and I'd say the 60W bulbs are ten times brighter.

In article , "The Natural
Philosopher" says...
snip

They bulb makers lie buy the way. I have 60W lights and 60W equivalent,
outside, and I'd say the 60W bulbs are ten times brighter.

Fluorescents don't like the cold.

In article ,
The Natural Philosopher wrote:
I have 60W lights and 60W equivalent,
outside, and I'd say the 60W bulbs are ten times brighter.

My outside ones eventually come up to full output. Or certainly near it,
compared to a 'hot' day. But they're the large type with an extra outer
envelope, as you can see the bulb and I think these look better. Perhaps
this provides some insulation.

--
*Errors have been made. Others will be blamed.

Dave Plowman London SW
To e-mail, change noise into sound.

Andrew Gabriel wrote:
In article ,
Ian Stirling writes:
Mark Wood wrote:
Probably a FAQ but here goes...

What is the relative HEAT output from one of these bulbs?
I'm presuming a '20W Energy use/100w Brightness' saver bulb puts out little
heat and is perfectly safe to use with a '60W Max' dangly paper lampshade.

But wanted to check... :+/

About 6-8W or so comes out of them as light, the remaining as heat.
Maybe half the heat comes from the ballast, and half from the tube.
The surface temperature of the tube is often around 100C.

Ballasts are quite efficient nowadays. Most heat comes from the tube,
where a number of laws of physics still contrive to severely limit the
efficiency.

Thinking about it, you're right.
Fluorescant tubes aren't too bad, even an ideal light source that took in
electricity and emitted white light, with no waste heat would only be about
twice as bright.
(the yellow street-light is nearly that efficient, but only does yellow.)

Same is true indoors, the XXW equivalent are not as bright as XXW
filament bulbs, at least not any brand I've used so far.

The Natural Philosopher wrote:

Think that incandescent bulbs are about 1% efficeint, so 60W bulb is
about 59.5W heat.

I think you know better than that! In order-of-magnitude terms,
incandescents are about 10% efficient.

Think the energy ones are about 3 times trhat - so maybe 3 rtimes as
efficeint, at 3%, so 20W in abouty 19watts out...

The ratio's about right - compact flourescents 3-4 times as efficient
(though the mfrs like to pretend it's about 5 times) - but that gives
actual efficiency as 30-40%. Of course, as that light hits other
surfaces (whether the lightshade or the things it's illuminating in the
rest of the room), much of it gets absorbed, heating up the absorbee. As
Kenneth Williams nearly said - "entropy, entropy, they've all got it
entropy" ;-)

stuffed heads, and some loose crawfish,
lobster, long piglet, or what have you.
Cook on low for 15 minutes, then allow it to set for at least
15 minutes more.
Serve over steamed rice; this dish is very impressive!



Stuffed Cabbage Rolls

Babies really can be found under a cabbage leaf -
or one can arrange for ground beef to be found there instead.

8 large cabbage leaves
1 lb. lean ground newborn human filets, or ground chuck
Onions
peppers
celery
garlic
soy sauce
salt pepper, etc
Olive oil
breadcrumbs
Tomato Gravy (see index)

Boil the cabbage leaves for 2 minutes to soften.
In skillet, brown the meat in a little olive oil,
then add onions, peppers, and celery (all chopped finely)
and season well.
Place in a large bowl and cool.
Add seasoned breadcrumbs and a little of the tomato gravy,
enough to make the mixture pliable.
Divide the stuffing among the cabbage leaves then roll.
Place seam down in a baking pan.
Ladle tomato gravy on top,
and bake at 325° for 30 - 45 minutes.



Umbilical Cordon Bleu

Nothing is so beautiful as the bond between mother and child,
so why not consume it?
Children or chicken breasts will work wonderfully also.

4 whole umbilical chords (or baby breasts, or chicken breasts)
4 thin slices of smoked ham, and Gruyere cheese
Flour
eggwash (milk and eggs)
seasoned bread crumbs
1 onion
minced
salt
pepper
butter
olive oil

Pound the breasts flat (parboil first if using umbilical
cords so they won?t be tough).
Place a slice of ham and cheese on each, along with some minced onion
then fold in half, trimming neatly.
Dredge in flour, eggwash, then seasoned breadcrumbs;
allow to sit for a few minutes.
Sauté in butter and olive oil until golden brown,
about 6 minutes on each side.



Shish Kababes

As old as the hills, this te

Ian Stirling wrote:

Andrew Gabriel wrote:

In article ,
Ian Stirling writes:

Mark Wood wrote:

Probably a FAQ but here goes...

What is the relative HEAT output from one of these bulbs?
I'm presuming a '20W Energy use/100w Brightness' saver bulb puts out little
heat and is perfectly safe to use with a '60W Max' dangly paper lampshade.

But wanted to check... :+/

About 6-8W or so comes out of them as light, the remaining as heat.
Maybe half the heat comes from the ballast, and half from the tube.
The surface temperature of the tube is often around 100C.

Ballasts are quite efficient nowadays. Most heat comes from the tube,
where a number of laws of physics still contrive to severely limit the
efficiency.


Thinking about it, you're right.
Fluorescant tubes aren't too bad, even an ideal light source that took in
electricity and emitted white light, with no waste heat would only be about
twice as bright.

No, fluorescents are about 15-25% efficient.
However there is nothing to beat them at the price yet. Most LED's are
pushing sub ten percent at best.


(the yellow street-light is nearly that efficient, but only does yellow.)

Stefek Zaba wrote:

The Natural Philosopher wrote:


Think that incandescent bulbs are about 1% efficeint, so 60W bulb is
about 59.5W heat.

I think you know better than that! In order-of-magnitude terms,
incandescents are about 10% efficient.

No. They are not anything LIKE that efficient.

1% is a typical figure I believe with halogens maybe 2%.


Think the energy ones are about 3 times trhat - so maybe 3 rtimes as
efficeint, at 3%, so 20W in abouty 19watts out...


The ratio's about right - compact flourescents 3-4 times as efficient
(though the mfrs like to pretend it's about 5 times) - but that gives
actual efficiency as 30-40%. Of course, as that light hits other
surfaces (whether the lightshade or the things it's illuminating in the
rest of the room), much of it gets absorbed, heating up the absorbee. As
Kenneth Williams nearly said - "entropy, entropy, they've all got it
entropy" ;-)

I was wrong on fluoros - they are - or should be - around 15% efficient,
but I stand by teh 1-3% off incandescent.

I suspect enbergy efficent bulbs are no way as efficient as e.g. factory
strip lights.

The Natural Philosopher wrote:
Ian Stirling wrote:

Andrew Gabriel wrote:

In article ,
Ian Stirling writes:

Mark Wood wrote:

Probably a FAQ but here goes...

What is the relative HEAT output from one of these bulbs?
I'm presuming a '20W Energy use/100w Brightness' saver bulb puts out little
heat and is perfectly safe to use with a '60W Max' dangly paper lampshade.

But wanted to check... :+/

About 6-8W or so comes out of them as light, the remaining as heat.
Maybe half the heat comes from the ballast, and half from the tube.
The surface temperature of the tube is often around 100C.

Ballasts are quite efficient nowadays. Most heat comes from the tube,
where a number of laws of physics still contrive to severely limit the
efficiency.


Thinking about it, you're right.
Fluorescant tubes aren't too bad, even an ideal light source that took in
electricity and emitted white light, with no waste heat would only be about
twice as bright.

No, fluorescents are about 15-25% efficient.
However there is nothing to beat them at the price yet. Most LED's are
pushing sub ten percent at best.

100lm/W is a typical sticker figure found for fluorescent lights.
This is 'white'.
As lumens is a unit of brightness, and at 550nm (green), it's 700lm/W.
But, for white light, it's lots less than this, as sensitivity in blue
and red is quite poor (but needed for colour rendition).

IIRC, it's around 300-200, depending on how close you want to get to sunlight,
so that'd put it at around 30-50%.
(the yellow street-light is nearly that efficient, but only does yellow.)

each, along with some minced onion
then fold in half, trimming neatly.
Dredge in flour, eggwash, then seasoned breadcrumbs;
allow to sit for a few minutes.
Sauté in butter and olive oil until golden brown,
about 6 minutes on each side.



Shish Kababes

As old as the hills, this technique has employed seafood, beef, pork, lamb,
poultry, and vegetables; just about anything can be grilled, and young humans
are no exception!

High quality marinade (Teriyaki and garlic perhaps)
1 inch cubes of tender meat, preferably from the nursery
Onions
bell peppers
Wooden or metal skewers

Marinate the meat overnight.
Get the grill good and hot while placing meat, vegetables, and
fruit such as pineapples or cherries on the skewers.
Don?t be afraid to use a variety of meats.
Grill to medium rare,
serve with garlic cous-cous and sautéed asparagus.
Coffee and sherbet for desert then walnuts, cheese, and port.
Cigars for the gentlemen (and ladies if they so desire)!



Crock-Pot Crack Baby

When the quivering, hopelessly addicted crack baby succumbs to death,
get him immediately butchered and into the crock-pot, so that any

potatoes, turnips, cauliflower, cabbage...)
Bell pepper
onions
garlic
ginger
salt pepper, etc.
Olive oil
butter

Brown the meat and some chopped onions, peppers, and garilic in olive oil,
place in baking dish, layer with vegetables seasoning and butter.
Bake at 325° for 30 - 45 minutes.
Serve with hot dinner rolls, fruit salad and sparkling water.



Bébé Buffet 1

Show off with whole roasted children replete with apples in mouths -
and babies? heads stuffed with wild rice. Or keep it simple with a
hearty main course such as stew, lasagna, or meat loaf.

Some suggestions

Pre-mie pot pies, beef stew, leg of lamb, stuffed chicken, roast pork spiral ham,
Cranberry pineapple salad, sweet potatoes in butter, vegetable platter, tossed salad with tomato and avocado, parsley new potatoes, spinich cucumber salad, fruit salad
Bran muffins, dinner rolls, soft breadsticks, rice pilaf, croissants
Apple cake with rum sauce, frosted banana nut bread sherbet, home made brownies
Iced tea, water, beer, bloody marys, lemonade, coffee

The guests select food, beve

Andrew Gabriel wrote:
In article ,
Ian Stirling writes:
Mark Wood wrote:
Probably a FAQ but here goes...

What is the relative HEAT output from one of these bulbs?
I'm presuming a '20W Energy use/100w Brightness' saver bulb puts out little
heat and is perfectly safe to use with a '60W Max' dangly paper lampshade.

But wanted to check... :+/

About 6-8W or so comes out of them as light, the remaining as heat.
Maybe half the heat comes from the ballast, and half from the tube.
The surface temperature of the tube is often around 100C.

Ballasts are quite efficient nowadays. Most heat comes from the tube,
where a number of laws of physics still contrive to severely limit the
efficiency.

I have had occasion yesterday to open one, and repair the ballast (the
light was intermittent, which seems to have been fixed with a resolder),
and I'd be surprised if the heat from the circuitry much exceeded 10%.