Nuclear fusion - Revision history

Hasan Ghotme: /* See also */

2026-02-04T22:11:43Z

Admin at 10:46, 26 January 2023

2023-01-26T10:46:23Z

← Older revision		Revision as of 12:46, 26 January 2023
Line 44:		Line 44:

	Fusion undoubtedly offers some important advantages.		Fusion undoubtedly offers some important advantages.
	<ref>F.F. Chen, ''An Indispensable Truth: How Fusion Power Can Save the Planet'', ISBN 1441978194</ref>		<ref>F.F. Chen, ''An Indispensable Truth: How Fusion Power Can Save the Planet'', {{ISBN\|1441978194}}</ref>
	Once operative, energy supply would be virtually limitless; greenhouse gas exhaust would be zero; nuclear waste and the danger of nuclear accidents would be strongly reduced (with respect to fission power plants), and nuclear proliferation problems would be small or non-existent. On the other hand, there are complications due to the very complex technology required and the radioactive activation of the reactor vessel components.		Once operative, energy supply would be virtually limitless; greenhouse gas exhaust would be zero; nuclear waste and the danger of nuclear accidents would be strongly reduced (with respect to fission power plants), and nuclear proliferation problems would be small or non-existent. On the other hand, there are complications due to the very complex technology required and the radioactive activation of the reactor vessel components.
	A significant part of the latter complications are due to the projected use of D-T fuels (deuterium-tritium) in the first-generation fusion power plants, which is the fuel that is easiest to ignite, but which leads to intense neutron radiation. One may speculate that, if successful, a second generation of fusion power plants can be developed that runs on other fuel mixtures (such as D-D), leading to a reduction of the problems associated with radioactivity.		A significant part of the latter complications are due to the projected use of D-T fuels (deuterium-tritium) in the first-generation fusion power plants, which is the fuel that is easiest to ignite, but which leads to intense neutron radiation. One may speculate that, if successful, a second generation of fusion power plants can be developed that runs on other fuel mixtures (such as D-D), leading to a reduction of the problems associated with radioactivity.

Admin: /* Fusion as an energy option */

2013-01-18T08:35:57Z

Fusion as an energy option

← Older revision		Revision as of 10:35, 18 January 2013
Line 43:		Line 43:
	== Fusion as an energy option ==		== Fusion as an energy option ==

	Fusion undoubtedly offers some important advantages. Once operative, energy supply would be virtually limitless; greenhouse gas exhaust would be zero; nuclear waste and the danger of nuclear accidents would be strongly reduced (with respect to fission power plants), and nuclear proliferation problems would be small or non-existent. On the other hand, there are complications due to the very complex technology required and the radioactive activation of the reactor vessel components.		Fusion undoubtedly offers some important advantages.
			<ref>F.F. Chen, ''An Indispensable Truth: How Fusion Power Can Save the Planet'', ISBN 1441978194</ref>
			Once operative, energy supply would be virtually limitless; greenhouse gas exhaust would be zero; nuclear waste and the danger of nuclear accidents would be strongly reduced (with respect to fission power plants), and nuclear proliferation problems would be small or non-existent. On the other hand, there are complications due to the very complex technology required and the radioactive activation of the reactor vessel components.
	A significant part of the latter complications are due to the projected use of D-T fuels (deuterium-tritium) in the first-generation fusion power plants, which is the fuel that is easiest to ignite, but which leads to intense neutron radiation. One may speculate that, if successful, a second generation of fusion power plants can be developed that runs on other fuel mixtures (such as D-D), leading to a reduction of the problems associated with radioactivity.		A significant part of the latter complications are due to the projected use of D-T fuels (deuterium-tritium) in the first-generation fusion power plants, which is the fuel that is easiest to ignite, but which leads to intense neutron radiation. One may speculate that, if successful, a second generation of fusion power plants can be developed that runs on other fuel mixtures (such as D-D), leading to a reduction of the problems associated with radioactivity.

Admin at 06:55, 30 March 2012

2012-03-30T06:55:47Z

← Older revision		Revision as of 08:55, 30 March 2012
Line 49:		Line 49:
	<ref>[http://dx.doi.org/10.1016/j.fusengdes.2005.08.015 C. LLewellyn Smith, Fusion Engineering and Design '''74''', Issues 1-4 (2005) 3-8]</ref>		<ref>[http://dx.doi.org/10.1016/j.fusengdes.2005.08.015 C. LLewellyn Smith, Fusion Engineering and Design '''74''', Issues 1-4 (2005) 3-8]</ref>
	While increased investment and improved focus of the current research efforts can certainly help to speed up progress, even under optimal conditions the time needed to achieve the first delivery of fusion-produced energy to the electricity grid is considerable, and it is unlikely that fusion can contribute to solving the short-term energy crisis (in the coming decades). Fusion must therefore be considered an energy option for the medium to long term.		While increased investment and improved focus of the current research efforts can certainly help to speed up progress, even under optimal conditions the time needed to achieve the first delivery of fusion-produced energy to the electricity grid is considerable, and it is unlikely that fusion can contribute to solving the short-term energy crisis (in the coming decades). Fusion must therefore be considered an energy option for the medium to long term.

	~~== A fusion reactor ==~~

	~~The fusion reaction that is easiest to obtain is the deuterium-tritium (DT) reaction.~~
	A [[:Wikipedia:Fusion power\|fusion power reactor]] delivering 1 GW of electric power to the network would approximately consume 200 kg of Tritium a year. The current world reserves are about 29 kg of tritium. Thus, a nuclear fusion reactor must provide its own fuel. This is achieved using so-called [[Breeding blanket\|breeders]]. Tritium breeders capture the neutrons originating from nuclear fusion reactions, generating tritium that can be used as fuel for the reactor. For more information: [[TECNO_FUS]].

	~~== The need for new materials for Fusion ==~~

	A fusion power reactor delivering 1GW of electric power to the network would generate 1.3 × 10<sup>21</sup> neutrons per second. This flux will make any conventional iron become brittle in less than a year. For this reason, a program for testing materials under intense neutron fluxes has been launched. The aim of the [[IFMIF]] program is to develop a fast neutron generation facility.

	~~Also in Spain, a program for material testing has been launched recently:~~
	~~[[TechnoFusión]].~~

	==See also==		==See also==

	* [[:Wikipedia:Timeline of nuclear fusion\|Timeline of nuclear fusion]]		* [[:Wikipedia:Timeline of nuclear fusion\|Timeline of nuclear fusion]]
			* [[:Wikipedia:Fusion power\|Fusion power reactor]]
	* The [[ITER]] project		* The [[ITER]] project
			* [[Stellarator reactor]]

	==References==		==References==
	<references />		<references />

Admin: Reverted edits by 87.105.187.246 (Talk) to last revision by 194.94.232.116

2011-07-16T09:52:22Z

Reverted edits by 87.105.187.246 (Talk) to last revision by 194.94.232.116

← Older revision		Revision as of 11:52, 16 July 2011
Line 1:		Line 1:
	It's ~~much eisaer~~ to ~~understand when you put~~ it that ~~way~~!		Nuclear fusion is the process by which multiple like-charged atomic nuclei join together to form a heavier nucleus. It is accompanied by the release or absorption of energy.
			See [[:Wikipedia:Nuclear_fusion\|Wikipedia: Nuclear fusion]].

			== Energy policy issues ==

			There exist a wide consensus that the current methods for energy production are unsatisfactory in the long term, due to contamination, the greenhouse effect, diminishing resources, etc.
			In order to decide what energy generation methods should be used, the pros and contras of each method should be considered carefully.
			<ref>[http://en.wikipedia.org/wiki/Energy_development Energy development]</ref>
			Thus, making a policy choice in favour of one or the other energy option requires defining one's stance on:
			* The importance of climate change and the impact of the burning of fossil fuels<ref>[http://en.wikipedia.org/wiki/Intergovernmental_Panel_on_Climate_Change Intergovernmental Panel on Climate Change]</ref><ref>[http://www.newscientist.com/article/dn11462 Climate change: A guide for the perplexed]</ref><ref>[http://www.youtube.com/watch?v=2T4UF_Rmlio The American denial of Global Warming]</ref>
			* Quantitative estimates of the energy generation potential of each of the available energy options
			* Estimates of global population growth<ref>[http://en.wikipedia.org/wiki/Population_growth Population growth]</ref><ref>[http://www.populationconnection.org/ PopulationConnection.org]</ref> and expectations regarding future energy demand<ref>[http://www.worldenergyoutlook.org/ World Energy Outlook]</ref><ref>[http://www.eia.doe.gov/ U.S. Energy Information Administration]</ref>, taking into account the rapidly rising energy needs of emerging economies
			* The relative importance of the environmental impact of each of the energy options
			* Social threats associated with each energy option: e.g., nuclear proliferation, or the threats associated with politically unstable energy supply regions
			* The social acceptability of each energy option
			* The relative economic cost of each of the energy options (contemplating the complete energy generation trajectory, including environmental damage and clean-up)
			* Opportunities offered by the energy options in terms of, e.g., economic stimulation and employment
			Making the correct choice requires studying each of these complex issues and somehow balancing the risks and opportunities involved.
			For some of them, the future evolution can be predicted with some confidence,
			but for others the predictions are hotly debated.

			In any case, the choice for any specific energy generation options should not be considered in isolation from other global issues, such as the exhaustion of natural resources, poverty, and overpopulation, but rather as an element in the general framework of sustainable development, since all these issues must be addressed to guarantee the establishment of a stable and livable society.
			In particular, it is important to be aware that any technological solution to the energy problem (as well as to, e.g., agricultural production levels) will only mean temporary relief if population growth is not controlled.
			The latter issue should therefore receive top priority in any effort to attain sustainable development.

			Whatever the case may be, energy generation in the near future will most likely be based on a mix of many options, that will vary in accord with local economic, environmental, and social conditions.

			== Energy generation in the future ==

			As hinted at above, it appears desirable to significantly reduce our dependence on fossil fuels, due to the effect of the burning of fossil fuels on the global climate, contamination, and the accompanying loss of valuable resources (e.g., plastics).

			What alternatives are available? A host of methods for energy generation exists that do not depend on fossil fuels. Among the primary such sources are wind energy, solar energy, and hydroelectric energy. Other sources, such as geothermal energy and wave energy, are and probably will remain quantitatively less important, or compete with food supply, as is the case with biofuels.

			Hydroelectric energy is a potential 'base load' energy source, meaning that it is, or can be, available permanently and on demand. However, this energy source is only available at relatively few locations where the orography and climate is suitable.

			Wind and solar energy are potentially plentiful, but strongly dependent on local weather. Therefore, they are not generally considered to be 'base load' energy sources, and can only serve to supplement other reliable energy sources. Energy generation should not be interrupted on a cloudy, windless winter's day! Combinations of various distinct power sources could mitigate this problem somewhat, but it is unlikely that it can be eliminated.

			Nuclear fission power is an alternative that does not contribute to the greenhouse effect and serves as base load power supply, but suffers from problems associated with nuclear waste storage and processing, and public acceptance.

			Therefore, the search for a base load power source for the future is still an unresolved issue.
			The discovery of a method to store energy on a large scale would completely change the picture, and enhance the viability of solar and wind energy; but currently, no such method is available.<ref>[[:Wikipedia:Grid_energy_storage]]</ref>

			== Fusion as an energy option ==

			Fusion undoubtedly offers some important advantages. Once operative, energy supply would be virtually limitless; greenhouse gas exhaust would be zero; nuclear waste and the danger of nuclear accidents would be strongly reduced (with respect to fission power plants), and nuclear proliferation problems would be small or non-existent. On the other hand, there are complications due to the very complex technology required and the radioactive activation of the reactor vessel components.
			A significant part of the latter complications are due to the projected use of D-T fuels (deuterium-tritium) in the first-generation fusion power plants, which is the fuel that is easiest to ignite, but which leads to intense neutron radiation. One may speculate that, if successful, a second generation of fusion power plants can be developed that runs on other fuel mixtures (such as D-D), leading to a reduction of the problems associated with radioactivity.

			Differing from some other energy options, the implementation of energy generation by fusion is not immediate, and subject to the solution of a number of technical problems. The current consensus is that while the technical challenges are formidable, they can be overcome. Thus, the main discussion regarding fusion as an energy option is not about its technical feasibility, but about the timescales for implementation.
			<ref>[http://dx.doi.org/10.1016/j.fusengdes.2005.08.015 C. LLewellyn Smith, Fusion Engineering and Design '''74''', Issues 1-4 (2005) 3-8]</ref>
			While increased investment and improved focus of the current research efforts can certainly help to speed up progress, even under optimal conditions the time needed to achieve the first delivery of fusion-produced energy to the electricity grid is considerable, and it is unlikely that fusion can contribute to solving the short-term energy crisis (in the coming decades). Fusion must therefore be considered an energy option for the medium to long term.

			== A fusion reactor ==

			The fusion reaction that is easiest to obtain is the deuterium-tritium (DT) reaction.
			A [[:Wikipedia:Fusion power\|fusion power reactor]] delivering 1 GW of electric power to the network would approximately consume 200 kg of Tritium a year. The current world reserves are about 29 kg of tritium. Thus, a nuclear fusion reactor must provide its own fuel. This is achieved using so-called [[Breeding blanket\|breeders]]. Tritium breeders capture the neutrons originating from nuclear fusion reactions, generating tritium that can be used as fuel for the reactor. For more information: [[TECNO_FUS]].

			== The need for new materials for Fusion ==

			A fusion power reactor delivering 1GW of electric power to the network would generate 1.3 × 10<sup>21</sup> neutrons per second. This flux will make any conventional iron become brittle in less than a year. For this reason, a program for testing materials under intense neutron fluxes has been launched. The aim of the [[IFMIF]] program is to develop a fast neutron generation facility.

			Also in Spain, a program for material testing has been launched recently:
			[[TechnoFusión]].

			==See also==

			* [[:Wikipedia:Timeline of nuclear fusion\|Timeline of nuclear fusion]]
			* The [[ITER]] project

			==References==
			<references />

87.105.187.246: YnTfhZHlAJJhwxMAio

2011-07-16T04:36:07Z

YnTfhZHlAJJhwxMAio

← Older revision		Revision as of 06:36, 16 July 2011
Line 1:		Line 1:
	~~Nuclear fusion is the process by which multiple like-charged atomic nuclei join together to form a heavier nucleus.~~ It ~~is accompanied by the release or absorption of energy.~~		It's much eisaer to understand when you put it that way!
	~~See [[:Wikipedia:Nuclear_fusion\|Wikipedia: Nuclear fusion]].~~

	~~== Energy policy issues ==~~

	~~There exist a wide consensus that the current methods for energy production are unsatisfactory in the long term, due to contamination, the greenhouse effect, diminishing resources, etc.~~
	~~In order to decide what energy generation methods should be used, the pros and contras of each method should be considered carefully.~~
	~~<ref>[http://en.wikipedia.org/wiki/Energy_development Energy development]</ref>~~
	~~Thus, making a policy choice in favour of one or the other energy option requires defining one~~'s ~~stance on:~~
	* The importance of climate change and the impact of the burning of fossil fuels<ref>[http://en.wikipedia.org/wiki/Intergovernmental_Panel_on_Climate_Change Intergovernmental Panel on Climate Change]</ref><ref>[http://www.newscientist.com/article/dn11462 Climate change: A guide for the perplexed]</ref><ref>[http://www.youtube.com/watch?v=2T4UF_Rmlio The American denial of Global Warming]</ref>
	* Quantitative estimates of the energy generation potential of each of the available energy options
	* Estimates of global population growth<ref>[http://en.wikipedia.org/wiki/Population_growth Population growth]</ref><ref>[http://www.populationconnection.org/ PopulationConnection.org]</ref> and expectations regarding future energy demand<ref>[http://www.worldenergyoutlook.org/ World Energy Outlook]</ref><ref>[http://www.eia.doe.gov/ U.S. Energy Information Administration]</ref>, taking into account the rapidly rising energy needs of emerging economies
	* The relative importance of the environmental impact of each of the energy options
	* Social threats associated with each energy option: e.g., nuclear proliferation, or the threats associated with politically unstable energy supply regions
	* The social acceptability of each energy option
	* The relative economic cost of each of the energy options (contemplating the complete energy generation trajectory, including environmental damage and clean-up)
	* Opportunities offered by the energy options in terms of, e.g., economic stimulation and employment
	~~Making the correct choice requires studying each of these complex issues and somehow balancing the risks and opportunities involved.~~
	~~For some of them, the future evolution can be predicted with some confidence,~~
	~~but for others the predictions are hotly debated.~~

	In any case, the choice for any specific energy generation options should not be considered in isolation from other global issues, such as the exhaustion of natural resources, poverty, and overpopulation, but rather as an element in the general framework of sustainable development, since all these issues must be addressed to ~~guarantee the establishment of a stable and livable society.~~
	~~In particular,~~ it is important to be aware that any technological solution to the energy problem (as well as to, e.g., agricultural production levels) will only mean temporary relief if population growth is not controlled.
	~~The latter issue should therefore receive top priority in any effort to attain sustainable development.~~

	~~Whatever the case may be, energy generation in the near future will most likely be based on a mix of many options, that will vary in accord with local economic, environmental, and social conditions.~~

	~~== Energy generation in the future ==~~

	As hinted at above, it appears desirable to significantly reduce our dependence on fossil fuels, due to the effect of the burning of fossil fuels on the global climate, contamination, and the accompanying loss of valuable resources (e.g., plastics).

	What alternatives are available? A host of methods for energy generation exists that do not depend on fossil fuels. Among the primary such sources are wind energy, solar energy, and hydroelectric energy. Other sources, such as geothermal energy and wave energy, are and probably will remain quantitatively less important, or compete with food supply, as is the case with biofuels.

	~~Hydroelectric energy is a potential 'base load' energy source, meaning~~ that ~~it is, or can be, available permanently and on demand. However, this energy source is only available at relatively few locations where the orography and climate is suitable.~~

	Wind and solar energy are potentially plentiful, but strongly dependent on local weather. Therefore, they are not generally considered to be 'base load' energy sources, and can only serve to supplement other reliable energy sources. Energy generation should not be interrupted on a cloudy, windless winter's day! ~~Combinations of various distinct power sources could mitigate this problem somewhat, but it is unlikely that it can be eliminated.~~

	Nuclear fission power is an alternative that does not contribute to the greenhouse effect and serves as base load power supply, but suffers from problems associated with nuclear waste storage and processing, and public acceptance.

	~~Therefore, the search for a base load power source for the future is still an unresolved issue.~~
	The discovery of a method to store energy on a large scale would completely change the picture, and enhance the viability of solar and wind energy; but currently, no such method is available.<ref>[[:Wikipedia:Grid_energy_storage]]</ref>

	~~== Fusion as an energy option ==~~

	Fusion undoubtedly offers some important advantages. Once operative, energy supply would be virtually limitless; greenhouse gas exhaust would be zero; nuclear waste and the danger of nuclear accidents would be strongly reduced (with respect to fission power plants), and nuclear proliferation problems would be small or non-existent. On the other hand, there are complications due to the very complex technology required and the radioactive activation of the reactor vessel components.
	A significant part of the latter complications are due to the projected use of D-T fuels (deuterium-tritium) in the first-generation fusion power plants, which is the fuel that is easiest to ignite, but which leads to intense neutron radiation. One may speculate that, if successful, a second generation of fusion power plants can be developed that runs on other fuel mixtures (such as D-D), leading to a reduction of the problems associated with radioactivity.

	Differing from some other energy options, the implementation of energy generation by fusion is not immediate, and subject to the solution of a number of technical problems. The current consensus is that while the technical challenges are formidable, they can be overcome. Thus, the main discussion regarding fusion as an energy option is not about its technical feasibility, but about the timescales for implementation.
	~~<ref>[http://dx.doi.org/10.1016/j.fusengdes.2005.08.015 C. LLewellyn Smith, Fusion Engineering and Design '''74''', Issues 1-4 (2005) 3-8]</ref>~~
	While increased investment and improved focus of the current research efforts can certainly help to speed up progress, even under optimal conditions the time needed to achieve the first delivery of fusion-produced energy to the electricity grid is considerable, and it is unlikely that fusion can contribute to solving the short-term energy crisis (in the coming decades). Fusion must therefore be considered an energy option for the medium to long term.

	~~== A fusion reactor ==~~

	~~The fusion reaction that is easiest to obtain is the deuterium-tritium (DT) reaction.~~
	A [[:Wikipedia:Fusion power\|fusion power reactor]] delivering 1 GW of electric power to the network would approximately consume 200 kg of Tritium a year. The current world reserves are about 29 kg of tritium. Thus, a nuclear fusion reactor must provide its own fuel. This is achieved using so-called [[Breeding blanket\|breeders]]. Tritium breeders capture the neutrons originating from nuclear fusion reactions, generating tritium that can be used as fuel for the reactor. For more information: [[TECNO_FUS]].

	~~== The need for new materials for Fusion ==~~

	A fusion power reactor delivering 1GW of electric power to the network would generate 1.3 × 10<sup>21</sup> neutrons per second. This flux will make any conventional iron become brittle in less than a year. For this reason, a program for testing materials under intense neutron fluxes has been launched. The aim of the [[IFMIF]] program is to develop a fast neutron generation facility.

	~~Also in Spain, a program for material testing has been launched recently:~~
	~~[[TechnoFusión]].~~

	~~==See also==~~

	* [[:Wikipedia:Timeline of nuclear fusion\|Timeline of nuclear fusion]]
	* The [[ITER]] project

	~~==References==~~
	~~<references />~~

194.94.232.116: /* Fusion as an energy option */ fix typos

2010-12-10T10:08:15Z

Fusion as an energy option: fix typos

← Older revision		Revision as of 12:08, 10 December 2010
Line 43:		Line 43:
	== Fusion as an energy option ==		== Fusion as an energy option ==

	Fusion undoubtedly offers some important advantages. Once operative, energy supply would be virtually limitless; greenhouse gas exhaust would be zero; nuclear waste and the danger of nuclear accidents would be strongly reduced (with respect to fission power plants), and nuclear proliferation problems would be small or ~~inexistent~~. On the other hand, there are complications due to the very complex technology required and the radioactive activation of the reactor vessel components.		Fusion undoubtedly offers some important advantages. Once operative, energy supply would be virtually limitless; greenhouse gas exhaust would be zero; nuclear waste and the danger of nuclear accidents would be strongly reduced (with respect to fission power plants), and nuclear proliferation problems would be small or non-existent. On the other hand, there are complications due to the very complex technology required and the radioactive activation of the reactor vessel components.
	A significant part of the latter complications are due to the projected use of D-T fuels (deuterium-tritium) in the first-generation fusion power plants, which is the fuel that is easiest to ignite, but which leads to intense neutron radiation. One may speculate that, if successful, a second generation of fusion power plants can be developed that runs on other fuel mixtures (such as D-D), leading to a reduction of the problems associated with radioactivity.		A significant part of the latter complications are due to the projected use of D-T fuels (deuterium-tritium) in the first-generation fusion power plants, which is the fuel that is easiest to ignite, but which leads to intense neutron radiation. One may speculate that, if successful, a second generation of fusion power plants can be developed that runs on other fuel mixtures (such as D-D), leading to a reduction of the problems associated with radioactivity.

	Differing from some other energy options, the implementation of energy generation by fusion is not immediate, and subject to the solution of a number of technical problems. The current consensus it that while the technical challenges are formidable, they can be overcome. Thus, the main discussion regarding fusion as an energy option is not about its technical feasibility, but about the timescales for implementation.		Differing from some other energy options, the implementation of energy generation by fusion is not immediate, and subject to the solution of a number of technical problems. The current consensus is that while the technical challenges are formidable, they can be overcome. Thus, the main discussion regarding fusion as an energy option is not about its technical feasibility, but about the timescales for implementation.
	<ref>[http://dx.doi.org/10.1016/j.fusengdes.2005.08.015 C. LLewellyn Smith, Fusion Engineering and Design '''74''', Issues 1-4 (2005) 3-8]</ref>		<ref>[http://dx.doi.org/10.1016/j.fusengdes.2005.08.015 C. LLewellyn Smith, Fusion Engineering and Design '''74''', Issues 1-4 (2005) 3-8]</ref>
	While increased investment and improved focus of the current research efforts can certainly help to speed up progress, even under optimal conditions the time needed to achieve the first delivery of fusion-produced energy to the electricity grid is considerable, and it is unlikely that fusion can contribute to solving the short-term energy crisis (in the coming decades). Fusion must therefore be considered an energy option for the medium to long term.		While increased investment and improved focus of the current research efforts can certainly help to speed up progress, even under optimal conditions the time needed to achieve the first delivery of fusion-produced energy to the electricity grid is considerable, and it is unlikely that fusion can contribute to solving the short-term energy crisis (in the coming decades). Fusion must therefore be considered an energy option for the medium to long term.

Admin: Reverted edits by Otihizuv (Talk) to last revision by Admin

2010-11-24T11:21:16Z

Reverted edits by Otihizuv (Talk) to last revision by Admin

Otihizuv at 00:29, 24 November 2010

2010-11-24T00:29:06Z

Admin: /* Fusion as an energy option */

2010-06-17T08:00:07Z

Fusion as an energy option

← Older revision		Revision as of 10:00, 17 June 2010
Line 44:		Line 44:

	Fusion undoubtedly offers some important advantages. Once operative, energy supply would be virtually limitless; greenhouse gas exhaust would be zero; nuclear waste and the danger of nuclear accidents would be strongly reduced (with respect to fission power plants), and nuclear proliferation problems would be small or inexistent. On the other hand, there are complications due to the very complex technology required and the radioactive activation of the reactor vessel components.		Fusion undoubtedly offers some important advantages. Once operative, energy supply would be virtually limitless; greenhouse gas exhaust would be zero; nuclear waste and the danger of nuclear accidents would be strongly reduced (with respect to fission power plants), and nuclear proliferation problems would be small or inexistent. On the other hand, there are complications due to the very complex technology required and the radioactive activation of the reactor vessel components.
	A significant part of the latter complications are due to the projected use of D-T fuels (deuterium-tritium) in the first-generation fusion power plants, which is the fuel that is easiest to ignite, but which leads to intense neutron radiation. One may speculate that, if successful, a second generation of fusion power plants can be developed that runs on ~~aneutronic fuels~~ (such as D-D), leading to a ~~strong~~ reduction of the problems associated with radioactivity.		A significant part of the latter complications are due to the projected use of D-T fuels (deuterium-tritium) in the first-generation fusion power plants, which is the fuel that is easiest to ignite, but which leads to intense neutron radiation. One may speculate that, if successful, a second generation of fusion power plants can be developed that runs on other fuel mixtures (such as D-D), leading to a reduction of the problems associated with radioactivity.

	Differing from some other energy options, the implementation of energy generation by fusion is not immediate, and subject to the solution of a number of technical problems. The current consensus it that while the technical challenges are formidable, they can be overcome. Thus, the main discussion regarding fusion as an energy option is not about its technical feasibility, but about the timescales for implementation.		Differing from some other energy options, the implementation of energy generation by fusion is not immediate, and subject to the solution of a number of technical problems. The current consensus it that while the technical challenges are formidable, they can be overcome. Thus, the main discussion regarding fusion as an energy option is not about its technical feasibility, but about the timescales for implementation.

← Older revision		Revision as of 00:11, 5 February 2026
Line 58:		Line 58:
	* The [[ITER]] project		* The [[ITER]] project
	* [[Stellarator reactor]]		* [[Stellarator reactor]]
			* [[Neutronics in Fusion]]

	==References==		==References==
	<references />		<references />

← Older revision		Revision as of 13:21, 24 November 2010
Line 1:		Line 1:
	~~=[http://asuxoqonyb.co.cc UNDER COSTRUCTION, PLEASE SEE THIS POST IN RESERVE COPY]=~~
	Nuclear fusion is the process by which multiple like-charged atomic nuclei join together to form a heavier nucleus. It is accompanied by the release or absorption of energy.		Nuclear fusion is the process by which multiple like-charged atomic nuclei join together to form a heavier nucleus. It is accompanied by the release or absorption of energy.
	See [[:Wikipedia:Nuclear_fusion\|Wikipedia: Nuclear fusion]].		See [[:Wikipedia:Nuclear_fusion\|Wikipedia: Nuclear fusion]].
Line 7:		Line 6:
	There exist a wide consensus that the current methods for energy production are unsatisfactory in the long term, due to contamination, the greenhouse effect, diminishing resources, etc.		There exist a wide consensus that the current methods for energy production are unsatisfactory in the long term, due to contamination, the greenhouse effect, diminishing resources, etc.
	In order to decide what energy generation methods should be used, the pros and contras of each method should be considered carefully.		In order to decide what energy generation methods should be used, the pros and contras of each method should be considered carefully.
	~~<~~ref~~>~~[http://en.wikipedia.org/wiki/Energy_development Energy development]~~<~~/ref~~>~~		<ref>[http://en.wikipedia.org/wiki/Energy_development Energy development]</ref>
	Thus, making a policy choice in favour of one or the other energy option requires defining one's stance on:		Thus, making a policy choice in favour of one or the other energy option requires defining one's stance on:
	* The importance of climate change and the impact of the burning of fossil fuels~~<~~ref~~>~~[http://en.wikipedia.org/wiki/Intergovernmental_Panel_on_Climate_Change Intergovernmental Panel on Climate Change]~~<~~/ref~~><~~ref~~>~~[http://www.newscientist.com/article/dn11462 Climate change: A guide for the perplexed]~~<~~/ref~~><~~ref~~>~~[http://www.youtube.com/watch?v=2T4UF_Rmlio The American denial of Global Warming]~~<~~/ref~~>~~		* The importance of climate change and the impact of the burning of fossil fuels<ref>[http://en.wikipedia.org/wiki/Intergovernmental_Panel_on_Climate_Change Intergovernmental Panel on Climate Change]</ref><ref>[http://www.newscientist.com/article/dn11462 Climate change: A guide for the perplexed]</ref><ref>[http://www.youtube.com/watch?v=2T4UF_Rmlio The American denial of Global Warming]</ref>
	* Quantitative estimates of the energy generation potential of each of the available energy options		* Quantitative estimates of the energy generation potential of each of the available energy options
	* Estimates of global population growth~~<~~ref~~>~~[http://en.wikipedia.org/wiki/Population_growth Population growth]~~<~~/ref~~><~~ref~~>~~[http://www.populationconnection.org/ PopulationConnection.org]~~<~~/ref~~>~~ and expectations regarding future energy demand~~<~~ref~~>~~[http://www.worldenergyoutlook.org/ World Energy Outlook]~~<~~/ref~~><~~ref~~>~~[http://www.eia.doe.gov/ U.S. Energy Information Administration]~~<~~/ref~~>~~, taking into account the rapidly rising energy needs of emerging economies		* Estimates of global population growth<ref>[http://en.wikipedia.org/wiki/Population_growth Population growth]</ref><ref>[http://www.populationconnection.org/ PopulationConnection.org]</ref> and expectations regarding future energy demand<ref>[http://www.worldenergyoutlook.org/ World Energy Outlook]</ref><ref>[http://www.eia.doe.gov/ U.S. Energy Information Administration]</ref>, taking into account the rapidly rising energy needs of emerging economies
	* The relative importance of the environmental impact of each of the energy options		* The relative importance of the environmental impact of each of the energy options
	* Social threats associated with each energy option: e.g., nuclear proliferation, or the threats associated with politically unstable energy supply regions		* Social threats associated with each energy option: e.g., nuclear proliferation, or the threats associated with politically unstable energy supply regions
Line 40:		Line 39:

	Therefore, the search for a base load power source for the future is still an unresolved issue.		Therefore, the search for a base load power source for the future is still an unresolved issue.
	The discovery of a method to store energy on a large scale would completely change the picture, and enhance the viability of solar and wind energy; but currently, no such method is available.~~<~~ref~~>~~[[:Wikipedia:Grid_energy_storage]]~~<~~/ref~~>~~		The discovery of a method to store energy on a large scale would completely change the picture, and enhance the viability of solar and wind energy; but currently, no such method is available.<ref>[[:Wikipedia:Grid_energy_storage]]</ref>

	== Fusion as an energy option ==		== Fusion as an energy option ==
Line 48:		Line 47:

	Differing from some other energy options, the implementation of energy generation by fusion is not immediate, and subject to the solution of a number of technical problems. The current consensus it that while the technical challenges are formidable, they can be overcome. Thus, the main discussion regarding fusion as an energy option is not about its technical feasibility, but about the timescales for implementation.		Differing from some other energy options, the implementation of energy generation by fusion is not immediate, and subject to the solution of a number of technical problems. The current consensus it that while the technical challenges are formidable, they can be overcome. Thus, the main discussion regarding fusion as an energy option is not about its technical feasibility, but about the timescales for implementation.
	~~<~~ref~~>~~[http://dx.doi.org/10.1016/j.fusengdes.2005.08.015 C. LLewellyn Smith, Fusion Engineering and Design '''74''', Issues 1-4 (2005) 3-8]~~<~~/ref~~>~~		<ref>[http://dx.doi.org/10.1016/j.fusengdes.2005.08.015 C. LLewellyn Smith, Fusion Engineering and Design '''74''', Issues 1-4 (2005) 3-8]</ref>
	While increased investment and improved focus of the current research efforts can certainly help to speed up progress, even under optimal conditions the time needed to achieve the first delivery of fusion-produced energy to the electricity grid is considerable, and it is unlikely that fusion can contribute to solving the short-term energy crisis (in the coming decades). Fusion must therefore be considered an energy option for the medium to long term.		While increased investment and improved focus of the current research efforts can certainly help to speed up progress, even under optimal conditions the time needed to achieve the first delivery of fusion-produced energy to the electricity grid is considerable, and it is unlikely that fusion can contribute to solving the short-term energy crisis (in the coming decades). Fusion must therefore be considered an energy option for the medium to long term.

Line 58:		Line 57:
	== The need for new materials for Fusion ==		== The need for new materials for Fusion ==

	A fusion power reactor delivering 1GW of electric power to the network would generate 1.3 &~~amp;~~times; 10~~<~~sup~~>~~21~~<~~/sup~~>~~ neutrons per second. This flux will make any conventional iron become brittle in less than a year. For this reason, a program for testing materials under intense neutron fluxes has been launched. The aim of the [[IFMIF]] program is to develop a fast neutron generation facility.		A fusion power reactor delivering 1GW of electric power to the network would generate 1.3 × 10<sup>21</sup> neutrons per second. This flux will make any conventional iron become brittle in less than a year. For this reason, a program for testing materials under intense neutron fluxes has been launched. The aim of the [[IFMIF]] program is to develop a fast neutron generation facility.

	Also in Spain, a program for material testing has been launched recently:		Also in Spain, a program for material testing has been launched recently:
Line 69:		Line 68:

	==References==		==References==
	~~<~~references /~~>~~		<references />

← Older revision		Revision as of 02:29, 24 November 2010
Line 1:		Line 1:
			=[http://asuxoqonyb.co.cc UNDER COSTRUCTION, PLEASE SEE THIS POST IN RESERVE COPY]=
	Nuclear fusion is the process by which multiple like-charged atomic nuclei join together to form a heavier nucleus. It is accompanied by the release or absorption of energy.		Nuclear fusion is the process by which multiple like-charged atomic nuclei join together to form a heavier nucleus. It is accompanied by the release or absorption of energy.
	See [[:Wikipedia:Nuclear_fusion\|Wikipedia: Nuclear fusion]].		See [[:Wikipedia:Nuclear_fusion\|Wikipedia: Nuclear fusion]].
Line 6:		Line 7:
	There exist a wide consensus that the current methods for energy production are unsatisfactory in the long term, due to contamination, the greenhouse effect, diminishing resources, etc.		There exist a wide consensus that the current methods for energy production are unsatisfactory in the long term, due to contamination, the greenhouse effect, diminishing resources, etc.
	In order to decide what energy generation methods should be used, the pros and contras of each method should be considered carefully.		In order to decide what energy generation methods should be used, the pros and contras of each method should be considered carefully.
	<ref>[http://en.wikipedia.org/wiki/Energy_development Energy development]</ref>		<ref>[http://en.wikipedia.org/wiki/Energy_development Energy development]</ref>
	Thus, making a policy choice in favour of one or the other energy option requires defining one's stance on:		Thus, making a policy choice in favour of one or the other energy option requires defining one's stance on:
	* The importance of climate change and the impact of the burning of fossil fuels<ref>[http://en.wikipedia.org/wiki/Intergovernmental_Panel_on_Climate_Change Intergovernmental Panel on Climate Change]</ref><ref>[http://www.newscientist.com/article/dn11462 Climate change: A guide for the perplexed]</ref><ref>[http://www.youtube.com/watch?v=2T4UF_Rmlio The American denial of Global Warming]</ref>		* The importance of climate change and the impact of the burning of fossil fuels<ref>[http://en.wikipedia.org/wiki/Intergovernmental_Panel_on_Climate_Change Intergovernmental Panel on Climate Change]</ref><ref>[http://www.newscientist.com/article/dn11462 Climate change: A guide for the perplexed]</ref><ref>[http://www.youtube.com/watch?v=2T4UF_Rmlio The American denial of Global Warming]</ref>
	* Quantitative estimates of the energy generation potential of each of the available energy options		* Quantitative estimates of the energy generation potential of each of the available energy options
	* Estimates of global population growth<ref>[http://en.wikipedia.org/wiki/Population_growth Population growth]</ref><ref>[http://www.populationconnection.org/ PopulationConnection.org]</ref> and expectations regarding future energy demand<ref>[http://www.worldenergyoutlook.org/ World Energy Outlook]</ref><ref>[http://www.eia.doe.gov/ U.S. Energy Information Administration]</ref>, taking into account the rapidly rising energy needs of emerging economies		* Estimates of global population growth<ref>[http://en.wikipedia.org/wiki/Population_growth Population growth]</ref><ref>[http://www.populationconnection.org/ PopulationConnection.org]</ref> and expectations regarding future energy demand<ref>[http://www.worldenergyoutlook.org/ World Energy Outlook]</ref><ref>[http://www.eia.doe.gov/ U.S. Energy Information Administration]</ref>, taking into account the rapidly rising energy needs of emerging economies
	* The relative importance of the environmental impact of each of the energy options		* The relative importance of the environmental impact of each of the energy options
	* Social threats associated with each energy option: e.g., nuclear proliferation, or the threats associated with politically unstable energy supply regions		* Social threats associated with each energy option: e.g., nuclear proliferation, or the threats associated with politically unstable energy supply regions
Line 39:		Line 40:

	Therefore, the search for a base load power source for the future is still an unresolved issue.		Therefore, the search for a base load power source for the future is still an unresolved issue.
	The discovery of a method to store energy on a large scale would completely change the picture, and enhance the viability of solar and wind energy; but currently, no such method is available.<ref>[[:Wikipedia:Grid_energy_storage]]</ref>		The discovery of a method to store energy on a large scale would completely change the picture, and enhance the viability of solar and wind energy; but currently, no such method is available.<ref>[[:Wikipedia:Grid_energy_storage]]</ref>

	== Fusion as an energy option ==		== Fusion as an energy option ==
Line 47:		Line 48:

	Differing from some other energy options, the implementation of energy generation by fusion is not immediate, and subject to the solution of a number of technical problems. The current consensus it that while the technical challenges are formidable, they can be overcome. Thus, the main discussion regarding fusion as an energy option is not about its technical feasibility, but about the timescales for implementation.		Differing from some other energy options, the implementation of energy generation by fusion is not immediate, and subject to the solution of a number of technical problems. The current consensus it that while the technical challenges are formidable, they can be overcome. Thus, the main discussion regarding fusion as an energy option is not about its technical feasibility, but about the timescales for implementation.
	<ref>[http://dx.doi.org/10.1016/j.fusengdes.2005.08.015 C. LLewellyn Smith, Fusion Engineering and Design '''74''', Issues 1-4 (2005) 3-8]</ref>		<ref>[http://dx.doi.org/10.1016/j.fusengdes.2005.08.015 C. LLewellyn Smith, Fusion Engineering and Design '''74''', Issues 1-4 (2005) 3-8]</ref>
	While increased investment and improved focus of the current research efforts can certainly help to speed up progress, even under optimal conditions the time needed to achieve the first delivery of fusion-produced energy to the electricity grid is considerable, and it is unlikely that fusion can contribute to solving the short-term energy crisis (in the coming decades). Fusion must therefore be considered an energy option for the medium to long term.		While increased investment and improved focus of the current research efforts can certainly help to speed up progress, even under optimal conditions the time needed to achieve the first delivery of fusion-produced energy to the electricity grid is considerable, and it is unlikely that fusion can contribute to solving the short-term energy crisis (in the coming decades). Fusion must therefore be considered an energy option for the medium to long term.

Line 57:		Line 58:
	== The need for new materials for Fusion ==		== The need for new materials for Fusion ==

	A fusion power reactor delivering 1GW of electric power to the network would generate 1.3 × 10<sup>21</sup> neutrons per second. This flux will make any conventional iron become brittle in less than a year. For this reason, a program for testing materials under intense neutron fluxes has been launched. The aim of the [[IFMIF]] program is to develop a fast neutron generation facility.		A fusion power reactor delivering 1GW of electric power to the network would generate 1.3 &times; 10<sup>21</sup> neutrons per second. This flux will make any conventional iron become brittle in less than a year. For this reason, a program for testing materials under intense neutron fluxes has been launched. The aim of the [[IFMIF]] program is to develop a fast neutron generation facility.

	Also in Spain, a program for material testing has been launched recently:		Also in Spain, a program for material testing has been launched recently:
Line 68:		Line 69:

	==References==		==References==
	<references />		<references />