Archive:000/Nuclear fusion - Revision history

Elie: Elie moved page Nuclear fusion to Archive:000/Nuclear fusion without leaving a redirect: Huge_refactor

2024-10-26T20:29:52Z

Elie moved page Nuclear fusion to Archive:000/Nuclear fusion without leaving a redirect: Huge_refactor

← Older revision	Revision as of 16:29, 26 October 2024
(No difference)

Elie: /* Scarcity of fuels */

2023-11-05T05:26:28Z

Scarcity of fuels

← Older revision		Revision as of 01:26, 5 November 2023
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	There are no viable reactors yet, but of the prototypes so far, some rely on tritium, an extremely rare form of hydrogen. Supply would be an issue.		There are no viable reactors yet, but of the prototypes so far, some rely on tritium, an extremely rare form of hydrogen. Supply would be an issue.

	Other possible fuels include deuterium, lithium or boron, which are comparatively less rare. In any case, only small amounts of the fuel would be needed to produce large amounts of energy.{{qn}}		Other possible fuels include deuterium, lithium or boron, which are comparatively less rare. In any case, only small amounts of the fuel would be needed to produce large amounts of energy. {{qn}}

	Ideally, fusion reactors could rely on ordinary hydrogen, which would be abundant enough to last for billions of years.		Ideally, fusion reactors could rely on ordinary hydrogen, which would be abundant enough to last for billions of years.
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	If we assume...{{pbr}}		If we assume...{{pbr}}
	~ that losing '''0.1%''' of the world's oceans would be enough to be a problem, and{{pbr}}		~ that losing '''0.1%''' of the world's oceans would be enough to be a problem, and{{pbr}}
	~ that hydrogen fusion energy consumption would '''~~equal~~''' today's fossil fuel energy consumption (~~no growth~~),{{pbr}}		~ that hydrogen fusion energy consumption would be '''10 times''' today's fossil fuel energy consumption (because cheap energy),{{pbr}}
	Then it would take more than ~~a hundred~~ billion years to have even a minor effect on the ecosystems:		Then at that rate, it would take more than ten billion years to have even a minor effect on the ecosystems:
	{{calc		{{calc
	\|0.1% oceans.volume waterdensity water.hydrogen_by_mass		\|0.1% oceans.volume * waterdensity * water.hydrogen_by_mass
	\|billion years (fossil_fuels.consumption / hydrogen_fusion.energy_by_mass)		\|billion years (10*fossil_fuels.consumption / hydrogen_fusion.energy_by_mass)
	\|\|\|Side note: For the same amount of energy, the hydrogen losses are even less than the would-be atmospheric losses in a non-nuclear scenario where [[hydrogen gas]] replaces [[natural gas]].		\|\|\|Side note: For the same amount of energy, the hydrogen losses are even less than the would-be atmospheric losses in a non-nuclear scenario where [[hydrogen gas]] replaces [[natural gas]].
	}}		}}

Elie: /* Scarcity of fuels */

2023-11-05T05:10:48Z

Scarcity of fuels

@@ Line 10: / Line 10: @@
 ==Scarcity of fuels==
 {{sum|Problem in some cases}}
 There are no viable reactors yet, but of the prototypes so far, some rely on tritium, an extremely rare form of hydrogen. Supply would be an issue.
 Other possible fuels include deuterium, lithium or boron, which are comparatively less rare. In any case, only small amounts of the fuel would be needed to produce large amounts of energy.{{qn}}
-Ideally, fusion reactors could rely on ordinary hydrogen, which would be abundant enough to last hundreds of millions of years.{{qn}} <!-- TODO: add calculation -->
+Ideally, fusion reactors could rely on ordinary hydrogen, which would be abundant enough to last for billions of years.
 For now, all of this is hypothetical - regardless of fuel, no prototype so far has been able to produce more energy than it takes to run it.

Elie: /* Energy inputs */

2023-07-01T05:07:22Z

Energy inputs

← Older revision		Revision as of 01:07, 1 July 2023
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	Takes more [[energy]] than it produces. [[EROI]] is still below 1.		Takes more [[energy]] than it produces. [[EROI]] is still below 1.

	Every once and awhile, there are "major breakthroughs" in nuclear fusion (~~the last~~ being in December 2022), and misleading news articles are quick to make it look as though scientists have finally achieved a "net energy gain". However, it's only a net gain relative to ''some'' of the energy inputs, not the whole system in total. In other words, fusion is not a viable power source yet. We don't know how long it will take to be. Since [[climate change]] is already near a [[tipping point]], we need to explore other solutions besides fusion only.		Every once and awhile, there are "major breakthroughs" in nuclear fusion (a [https://www.youtube.com/watch?v=DbpUj1-tEhs recent one] being in December 2022), and misleading news articles are quick to make it look as though scientists have finally achieved a "net energy gain". However, it's only a net gain relative to ''some'' of the energy inputs, not the whole system in total. In other words, fusion is not a viable power source yet. We don't know how long it will take to be. Since [[climate change]] is already near a [[tipping point]], we need to explore other solutions besides fusion only.

	==Scarcity of fuels==		==Scarcity of fuels==

Elie at 05:01, 1 July 2023

2023-07-01T05:01:21Z

← Older revision		Revision as of 01:01, 1 July 2023
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	Takes more [[energy]] than it produces. [[EROI]] is still below 1.		Takes more [[energy]] than it produces. [[EROI]] is still below 1.

	Every once and awhile, there are "major breakthroughs" in nuclear fusion (the last being in December 2022), and misleading news articles are quick to make it look as though scientists have finally achieved a "net energy gain". However, it's only a net gain relative to ''some'' of the energy inputs, not the whole system in total. In other ~~worse~~, fusion is not a viable power source yet. We don't know how long it will take to be. Since [[climate change]] is already near a [[tipping point]], we need to explore other solutions besides fusion only.		Every once and awhile, there are "major breakthroughs" in nuclear fusion (the last being in December 2022), and misleading news articles are quick to make it look as though scientists have finally achieved a "net energy gain". However, it's only a net gain relative to ''some'' of the energy inputs, not the whole system in total. In other words, fusion is not a viable power source yet. We don't know how long it will take to be. Since [[climate change]] is already near a [[tipping point]], we need to explore other solutions besides fusion only.

	==Scarcity of fuels==		==Scarcity of fuels==
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	There are no viable reactors yet, but of the prototypes so far, some rely on tritium, an extremely rare form of hydrogen. Supply would be an issue.		There are no viable reactors yet, but of the prototypes so far, some rely on tritium, an extremely rare form of hydrogen. Supply would be an issue.

	Other possible fuels include deuterium, lithium or boron, which are comparatively less rare. In any case, only small amounts of the fuel ~~are~~ needed to produce large amounts of energy.{{qn}}		Other possible fuels include deuterium, lithium or boron, which are comparatively less rare. In any case, only small amounts of the fuel would be needed to produce large amounts of energy.{{qn}}

	Ideally, fusion reactors could rely on ordinary hydrogen, which would be abundant enough to last hundreds of millions of years.{{qn}} <!-- TODO: add calculation -->		Ideally, fusion reactors could rely on ordinary hydrogen, which would be abundant enough to last hundreds of millions of years.{{qn}} <!-- TODO: add calculation -->
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	==See also==		==See also==
	* [[Nuclear fission]]		* [[Nuclear fission]] (not fusion)

			==External links==
			* [https://www.youtube.com/watch?v=23W0t5-LlV0 Nuclear Fusion: Who'll Be First To Make It Work? - YouTube (Sabine Hossenfelder)]

	[[Category:Energy sources]]		[[Category:Energy sources]]

Elie: /* Energy inputs */

2023-07-01T04:55:11Z

Energy inputs

← Older revision		Revision as of 00:55, 1 July 2023
Line 6:		Line 6:
	Takes more [[energy]] than it produces. [[EROI]] is still below 1.		Takes more [[energy]] than it produces. [[EROI]] is still below 1.

	Every once and awhile, there are "major breakthroughs" in nuclear fusion (the last being in December 2022), and misleading news articles are quick to make it look as though scientists have finally achieved a "net energy gain". However, it's only a net gain relative to ''some'' of the energy inputs, not the whole system in total. In other worse, fusion is not a viable power source yet. We don't know how long it will take to be. Since [[climate change]] is already near a [[tipping point]], we need to explore other solutions besides fusion.		Every once and awhile, there are "major breakthroughs" in nuclear fusion (the last being in December 2022), and misleading news articles are quick to make it look as though scientists have finally achieved a "net energy gain". However, it's only a net gain relative to ''some'' of the energy inputs, not the whole system in total. In other worse, fusion is not a viable power source yet. We don't know how long it will take to be. Since [[climate change]] is already near a [[tipping point]], we need to explore other solutions besides fusion only.

	==Scarcity of fuels==		==Scarcity of fuels==

Elie: /* Energy inputs */

2023-07-01T04:54:35Z

Energy inputs

← Older revision		Revision as of 00:54, 1 July 2023
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	{{considerations}}		{{considerations}}
	==Energy inputs==		==Energy inputs==
	{{sum\|Major problem}}		{{sum\|Major problem\|bad}}
	Takes more [[energy]] than it produces. [[EROI]] is still below 1. ~~{{en}}~~		Takes more [[energy]] than it produces. [[EROI]] is still below 1.

			Every once and awhile, there are "major breakthroughs" in nuclear fusion (the last being in December 2022), and misleading news articles are quick to make it look as though scientists have finally achieved a "net energy gain". However, it's only a net gain relative to ''some'' of the energy inputs, not the whole system in total. In other worse, fusion is not a viable power source yet. We don't know how long it will take to be. Since [[climate change]] is already near a [[tipping point]], we need to explore other solutions besides fusion.

	==Scarcity of fuels==		==Scarcity of fuels==
	{{sum\|Problem in some cases}}		{{sum\|Problem in some cases}}

Elie: Created page with "Possible energy source - not Term:viable| yet. {{considerations}} ==Energy inputs== {{sum|Major problem}} Takes more energy than it produces. EROI is still below 1. {{en}} ==Scarcity of fuels== {{sum|Problem in some cases}} There are no viable reactors yet, but of the prototypes so far, some rely on tritium, an extremely rare form of hydrogen. Supply would be an issue. Other possible fuels include deuterium, lithium or boron, which are comparatively les..."

2023-05-21T03:18:39Z

Created page with "Possible energy source - not Term:viable yet. {{considerations}} ==Energy inputs== {{sum|Major problem}} Takes more energy than it produces. EROI is still below 1. {{en}} ==Scarcity of fuels== {{sum|Problem in some cases}} There are no viable reactors yet, but of the prototypes so far, some rely on tritium, an extremely rare form of hydrogen. Supply would be an issue. Other possible fuels include deuterium, lithium or boron, which are comparatively les..."

New page

Possible [[energy]] source - not [[Term:viable|viable]] yet.

{{considerations}}
==Energy inputs==
{{sum|Major problem}}
Takes more [[energy]] than it produces. [[EROI]] is still below 1. {{en}}
==Scarcity of fuels==
{{sum|Problem in some cases}}
There are no viable reactors yet, but of the prototypes so far, some rely on tritium, an extremely rare form of hydrogen. Supply would be an issue.

Other possible fuels include deuterium, lithium or boron, which are comparatively less rare. In any case, only small amounts of the fuel are needed to produce large amounts of energy.{{qn}}

Ideally, fusion reactors could rely on ordinary hydrogen, which would be abundant enough to last hundreds of millions of years.{{qn}} 

For now, all of this is hypothetical - regardless of fuel, no prototype so far has been able to produce more energy than it takes to run it.

==See also==
* [[Nuclear fission]]

[[Category:Energy sources]]