[Stoves] FW: MANTLE LAMP TESTS

Fri Feb 2 21:51:55 CST 2007

Frans,

Thanks for the message and for the efforts.

Last month I met Mr. Eddie Draper who makes the Britelyt mantle 
lanterns, and he
has a model that runs on any of the alcohols.  A VERY nice product and 
I showed
one at ETHOS.  Sells for about $200 including a cookstove substitute 
top.  Visit    www.britelyt.com   for info.

Britelyt has a stronger mantle than what is common for campstoves.  Any 
details
would need to come from Eddie, who is receiving a copy of this message.

Eddie:  Thanks.  The alcohol lantern was performed well at ETHOS.  See 
photo of
it in the photo section of Tom Miles report at     bioenergylists.org    .

Paul

-- 
Paul S. Anderson, Ph.D., Geography professor - Emeritus
Telephone:  USA-309-452-7072 (residence and office)
Internet site:  www.ilstu.edu/~psanders
For my gasifier stoves info, go to:
http://bioenergylists.org/contributors#Paul_Anderson

Quoting Frans Peeters <peetersfrans at telenet.be>:

>
>
>
>
>
>
> Dear Paul ,
>
>    I have tested a camping gass lamp with a mantle of ThO2 .
> It is very very weak ! It breaks down in powder by toutching . Gamma
> counting 3730 Bq eq . Alfa and beta contamination risk is easy . So it
> is no idea to restart this production .
>
> In a museum ,I saw  information ,the material is ThO2 + CeO .
> I did the test with CeO only .
> Ceriumoxyde was dissolded in warm nitric acid .
> Dryed on silk , cellulose and glas microfiber filter .
> Only the glass fibre was strong anough ,but the sodium gave a yellow
> color . The wanted  bright effect with CeO only mantle, was
> unsuccesfully .
>
> A vacuum tube with a heater surrounded by white calsite ,CaSO4 cristals
> . Is used for gamma radiation dosimeter memory .
> Afterwards heated in a photomultiplier luminometer , it gives  light in
> proportion to
> Accumulated radiation .
> Overheated to clear red heat, it  gave no  extra white, glow wanted for
> use as mantle !
>
> Light measurement : with TP 60 SILICON SENSOR at 1 foot gives :(
> 1uA=1Lux ) TEA candle =14uA visible and 6 uA IR invisible . Total 20uA
> light . So 14 uA/ 1 Candela (Cd ) Gass ThO2 WICK lamp gives 40 uA light
> +23 uA IR light ; Total 63 uA . So +- 3 Candelas.
>
> An US firm sels mantles for ALLADIN  kerosin lamps for 10 $. They do not
> answer on questions about mantle specs ; ThO2 or not .
>
> I finish this old road to extra light .
> May be AJH has old methods with rare earth metals to make mantles ?
> I lost a stove info about that .
>
> Better think about NEW technologie . 20 candela LED 20°angle ,  0,064
> watts for 2 $ !
>
> Greetings
> Frans
>
> -----Oorspronkelijk bericht-----
> Van: psanders at ilstu.edu
> Verzonden: zaterdag 4 november 2006
> Aan: Frans Peeters
> Onderwerp: Alcohol Mantle Lamp.
>
>
> Dear Martin, Frans
>
> Interesting comments about wicks.  I do not know how I will utilize that
> information.  But here is a possible issue:
>
> I want to create light by using the "gas mantle" approach.  "gas
> mantle".
>
> An incandescent gas mantle, gas mantle, or Welsbach mantle is a device
> for generating bright white light when heated by a flame. The name
> refers to its original heat source, existing gas lights which filled the
> streets of Europe and North America in the late 19th century, mantle
> referring to the way it was hung above the flame. Today they are still
> used for portable camping lanterns and pressure lamps. [edit] Mechanism
> They work by utilising the heat of a flame, in modern portable
> applications produced by using kerosene or liquified petroleum gas, to
> heat them up to around 1000 degrees celsius. At this temperature, they
> are sufficiently hot to radiate an intense white light as a consequence
> of the spectral lines of rare earth elements in the mantle. The light is
> not produced through black body radiation, since the temperature is too
> low to generate white light.
>
> Modern mantles are made of ramie-based artificial silk or rayon. When
> the mantle, a small net bag, is attached to the lamp and used for the
> first time, the heat burns away the bag's cellulose and converts the
> in-soaked rare earth nitrates into a rigid, but very fragile, metal
> oxide structure.
>
> Since thorium is radioactive......
> (end of quotation.  Much more info is there.)
>
> Now for my questions and project:
> I want to create light by using the "gas mantle" approach.  Seems like
> I need to
> get about 1000 deg C heat (direct flame) to a mantle.
>
> Is there any wick mechanism that can yield such heat?  What would be
> the fuel? Can alcohol accomplish that heat (because I have invented a
> nice alcohol burner
> that vaporized the liquid and can send the alcohol vapor as little jets
> (call them point-type "wicks?) in any configuration that is specified.
>
> I have tried this with a very rudimentary arrangement with a bag-type
> mantle, and only got small areas to glow for short times.  I think part
> of the "trick" is to get the gases to burn right at the position of the
> mantle.
>
>  I simply want to give mantle-light via alcohol fuel to a billion
> people, or more.
>
> I hope each of you will respond.
>
> Paul
>
>
>
>
> --
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>
>

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