| Revision as of 00:33, 6 June 2007 editOmegatron (talk | contribs)Administrators35,798 edits clarify that brown's gas is oxyhydrogen← Previous edit |
Latest revision as of 18:42, 8 May 2023 edit undoJJMC89 (talk | contribs)Edit filter managers, Autopatrolled, Administrators344,606 editsm +{{Redirect category shell}} |
| (31 intermediate revisions by 11 users not shown) |
| Line 1: |
Line 1: |
|
⚫ |
#REDIRECT ] |
|
<!-- Please do not remove or change this AfD message until the issue is settled -->{{#if:{{{nosubst|}}}|<div style="display:none;">}} {{#ifeq:{{NAMESPACE}}|| |{{error:not substituted|AFD}}<div style="display:none;">}}{{#if:{{{nosubst|}}}|</div></div>}} |
|
|
<div class="boilerplate metadata" id="afd" style="margin: 0 5%; padding: 0 7px 7px 7px; background: #EDF1F1; border: 1px solid #999999; text-align: left; font-size:95%;"> |
|
|
'''This article is being considered for deletion''' for the third time in accordance with Misplaced Pages's ].<br /> |
|
|
Please share your thoughts on the matter at ''']''' on the ] page.<br /> |
|
|
You are welcome to edit this article, but please do not blank this article or remove this notice while the discussion is in progress. For more information, particularly on merging or moving the article during the discussion, read the ].<br/> |
|
|
''<small>Steps to ]: {{tls|afd}} • OR <nowiki>{{</nowiki>subst:afd2|pg={{PAGENAME}}|cat=|text=}} • <nowiki>{{</nowiki>subst:afd3|pg={{PAGENAME}} (third nomination)}} </small></div> |
|
|
{{{category|]}}} |
|
|
<!-- End of AfD message, feel free to edit beyond this point --> |
|
|
|
|
|
|
|
{{Redirect category shell| |
|
'''Brown's gas''' is a mixture of ] and ] ] (]),<!-- though we give it a separate article because proponents claim it to be different --> produced by the common-ducted ], promoted by Yull Brown as a fuel for ], ], and the like. It is sometimes claimed by others to have special properties that defy the laws of physics. |
|
|
|
{{R to section}} |
|
|
|
|
|
}} |
|
== Welding == |
|
|
In standard ] (using separate tanks for each gas), the ratio of each gas in the mixture must be very carefully controlled before burning, as excess oxygen will result in ] of the metal, and excess hydrogen will result in ].<ref name="US4014777">{{US patent reference |
|
|
| number = 4014777 |
|
|
| y = 1977 |
|
|
| m = 03 |
|
|
| d = 29 |
|
|
| inventor = Yull Brown |
|
|
| title = Welding |
|
|
}}</ref> |
|
|
|
|
|
Since Brown's gas is generated directly from water in a closed container, it is already in the perfect mixture required for this type of welding. Brown's welding devices use ] in a common chamber to generate a ] mixture of hydrogen and oxygen, which is then passed through a flash-back arrestor and into a burner, where it is ignited to create a flame.<ref name="US4081656">{{US patent reference |
|
|
| number = 4081656 |
|
|
| y = 1978 |
|
|
| m = 03 |
|
|
| d = 28 |
|
|
| inventor = Yull Brown |
|
|
| title = Arc-assisted oxy/hydrogen welding |
|
|
}}</ref> |
|
|
|
|
|
This ] is also more convenient than fuels like ] due to the generation of gas on demand, instead of buying and transporting containers of fuel. Brown's gas generators only require a source of water and electrical energy.<ref name="US4014777"/> While acetylene burns at 2670 °C, which is hotter than a hydrogen-air flame (2400 °C), the oxyhydrogen flame theoretically burns at a hotter 3100 °C.<ref name="Electronics">{{Cite news |
|
|
| volume = 69 |
|
|
| issue = 2 |
|
|
| pages = 22 |
|
|
| last = Don Lancaster |
|
|
| title = Investigating Brown's gas, a tiny TV generator, and more |
|
|
| work = Electronics Now |
|
|
| date = 1998-02 |
|
|
| url = http://www.accessmylibrary.com/coms2/summary_0286-9314717_ITM |
|
|
}}</ref> |
|
|
|
|
|
=== Safety === |
|
|
|
|
|
Usual oxy-hydrogen welding apparatus keeps the gases in separate tanks, due to the danger of explosion if the mixture is ignited inside a container. Brown includes a number of safety devices, however, such as porous plugs that allow gas through but not the heat of a flame, and claims that his welding device is safe. The current is varied so that gas is only generated as it is needed.<ref name="US4014777"/> |
|
|
|
|
|
=== Atomic welding === |
|
|
|
|
|
Brown also describes "atomic welding" in his patents, in which an ] is passed through the mixture of gas before burning, so that the gas molecules break into atomic oxygen and hydrogen, using the electrical energy to produce a hotter flame when the atoms recombine ("218,000 cal. per gram mole").<ref name="US4014777"/> |
|
|
|
|
|
== Waste disposal == |
|
|
|
|
|
The high temperatures from burning Brown's gas can also be used for the ] of ] waste, turning the ash into a safer glass-like substance.<ref>{{Cite journal |
|
|
| title = Vitrification of Municipal Solid Waste Incinerator Fly Ash Using Brown's Gas |
|
|
| accessdate = 2007-04-05 |
|
|
| url = http://pubs.acs.org/cgi-bin/article.cgi/enfuem/2005/19/i01/html/ef049953z.html |
|
|
}}</ref> |
|
|
|
|
|
== Anomalous effects == |
|
|
|
|
|
Many other dubious claims about the gas are made by proponents, such as a "self-adjusting" temperature, in which the flame becomes hotter when directed at tougher materials, but becomes cool when touched briefly by a finger.{{Fact|date=June 2007}} This has been attributed to misinterpretations of ] readings and the flame not emitting enough energy to burn the finger in such a short duration of time.<ref name="Electronics"/> |
|
|
|
|
|
Brown's gas is claimed to be fundamentally different from oxyhydrogen because it implodes when ignited, rather than exploding.{{Fact|date=June 2007}} South Korean Hung-Kuk Oh of ], for instance, claims that the implosion effect cannot be explained by modern physics, and proposes that the effect is caused by a "strong gravitational cavity" from "] ] of hydrogen".<ref>{{Cite journal |
|
|
| volume = 95 |
|
|
| issue = 1-3 |
|
|
| pages = 8-9 |
|
|
| last = Oh |
|
|
| first = Hung-Kuk |
|
|
| title = Some comments on implosion and Brown gas |
|
|
| journal = Journal of Materials Processing Technology |
|
|
| date = ] |
|
|
}}</ref> ] points out that the effect can be explained simply by the rapid condensation of the resulting steam on the container's walls.<ref name="Electronics"/> |
|
|
|
|
|
== See also == |
|
|
* ] |
|
|
* ] |
|
| ⚫ |
* ] |
|
|
* ], which also uses a mixture of oxygen and hydrogen made by ], kept in separate chambers. |
|
|
|
|
|
== References == |
|
|
<references/> |
|
|
|
|
|
] |
|