Embodied energy - Revision history

RichardWSmith: /* Discussion */

2024-09-24T17:01:37Z

Discussion

← Older revision		Revision as of 18:01, 24 September 2024
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	==Discussion==		==Discussion==
	~~since~~ biomass is produced at the same time as food in roughly equivalent quantities, it might be better to divide the energy of food into two, and ascribe half the energy to biomass. The biomass energy can then be added to products derived from biomass.		Since biomass is produced at the same time as food in roughly equivalent quantities, it might be better to divide the energy of food into two, and ascribe half the energy to biomass. The biomass energy can then be added to products derived from biomass.

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

RichardWSmith: /* In common materials (from Wikipedia, partially adapted to Mars) */ spelling

2024-09-24T17:00:59Z

In common materials (from Wikipedia, partially adapted to Mars): spelling

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	Plastics, for example, have a high value of embodied energy and therefore are not the best choices for construction materials, of other choices are available. '''Note, energy in plastic feedstock is included, although these are for feedstocks on Earth. The feedstock energy on Mars is probably higher as it is all ~~sources~~ from methane.'''		Plastics, for example, have a high value of embodied energy and therefore are not the best choices for construction materials, of other choices are available. '''Note, energy in plastic feedstock is included, although these are for feedstocks on Earth. The feedstock energy on Mars is probably higher as it is all sourced from methane.'''

	Aluminium requires much more energy than Steel or iron and therefore is less likely to be used for construction on Mars. However, both steel and aluminium production on Earth uses coke, that embodies significant energy that is not counted in the evaluation made for Earth but would need to be added for Mars . ''TBC.''		Aluminium requires much more energy than Steel or iron and therefore is less likely to be used for construction on Mars. However, both steel and aluminium production on Earth uses coke, that embodies significant energy that is not counted in the evaluation made for Earth but would need to be added for Mars . ''TBC.''

Michel Lamontagne: /* References */

2024-09-24T15:43:18Z

References

← Older revision		Revision as of 16:43, 24 September 2024
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	\|100,000		\|100,000
	\|}		\|}

			==Discussion==
			since biomass is produced at the same time as food in roughly equivalent quantities, it might be better to divide the energy of food into two, and ascribe half the energy to biomass. The biomass energy can then be added to products derived from biomass.

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

Michel Lamontagne: /* In common materials (from Wikipedia, partially adapted to Mars) */

2024-09-24T15:41:18Z

In common materials (from Wikipedia, partially adapted to Mars)

← Older revision		Revision as of 16:41, 24 September 2024
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	==In common materials (from Wikipedia, partially adapted to Mars)==		==In common materials (from Wikipedia, partially adapted to Mars)==
	*Selected data from the Inventory of Carbon and Energy ('ICE') prepared by the University of Bath (UK)		*Selected data from the Inventory of Carbon and Energy ('ICE') prepared by the University of Bath (UK)
	*Note that for all wood, paper, fiber and other biologically produced products, as well as for many plastics, the energy cost of biomass ~~must~~ be added to the embodied energy.		*Note that for all wood, paper, fiber and other biologically produced products, as well as for many plastics, the energy cost of biomass should be added to the embodied energy.
	{\| class="wikitable sortable"		{\| class="wikitable sortable"
	!'''Material'''		!'''Material'''

Michel Lamontagne: /* In common materials (from Wikipedia, partially adapted to Mars) */

2024-09-24T15:40:09Z

In common materials (from Wikipedia, partially adapted to Mars)

← Older revision		Revision as of 16:40, 24 September 2024
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	==In common materials (from Wikipedia, partially adapted to Mars)==		==In common materials (from Wikipedia, partially adapted to Mars)==
	*Selected data from the Inventory of Carbon and Energy ('ICE') prepared by the University of Bath (UK)		*Selected data from the Inventory of Carbon and Energy ('ICE') prepared by the University of Bath (UK)
	*Note that for all wood and other ~~biologocal~~ products, as well as for many plastics, the energy cost of biomass must be added to the embodied energy.		*Note that for all wood, paper, fiber and other biologically produced products, as well as for many plastics, the energy cost of biomass must be added to the embodied energy.
	{\| class="wikitable sortable"		{\| class="wikitable sortable"
	!'''Material'''		!'''Material'''

Michel Lamontagne at 15:38, 24 September 2024

2024-09-24T15:38:49Z

← Older revision		Revision as of 16:38, 24 September 2024
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	\|ML		\|ML
	\|-		\|-
	\|'''Food'''		\|'''Food and biomass'''
	\|1300		\|1300
	\|900-1000		\|900-1000

Michel Lamontagne: /* In common materials (from Wikipedia, partially adapted to Mars) */

2024-09-24T15:37:47Z

In common materials (from Wikipedia, partially adapted to Mars)

← Older revision		Revision as of 16:37, 24 September 2024
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	==In common materials (from Wikipedia, partially adapted to Mars)==		==In common materials (from Wikipedia, partially adapted to Mars)==
	Selected data from the Inventory of Carbon and Energy ('ICE') prepared by the University of Bath (UK)		*Selected data from the Inventory of Carbon and Energy ('ICE') prepared by the University of Bath (UK)
	Note that for all wood and other biologocal products, as well as for many plastics, the energy cost of biomass must be added to the embodied energy.		*Note that for all wood and other biologocal products, as well as for many plastics, the energy cost of biomass must be added to the embodied energy.
	{\| class="wikitable sortable"		{\| class="wikitable sortable"
	!'''Material'''		!'''Material'''

Michel Lamontagne: /* In common materials (from Wikipedia, partially adapted to Mars) */

2024-09-24T15:37:33Z

In common materials (from Wikipedia, partially adapted to Mars)

← Older revision		Revision as of 16:37, 24 September 2024
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	==In common materials (from Wikipedia, partially adapted to Mars)==		==In common materials (from Wikipedia, partially adapted to Mars)==
	Selected data from the Inventory of Carbon and Energy ('ICE') prepared by the University of Bath (UK)		Selected data from the Inventory of Carbon and Energy ('ICE') prepared by the University of Bath (UK)
			Note that for all wood and other biologocal products, as well as for many plastics, the energy cost of biomass must be added to the embodied energy.
	{\| class="wikitable sortable"		{\| class="wikitable sortable"
	!'''Material'''		!'''Material'''

Michel Lamontagne: /* Embodied energy in solar cells */

2023-02-14T16:49:17Z

Embodied energy in solar cells

← Older revision		Revision as of 17:49, 14 February 2023
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	==Embodied energy in solar cells==		==Embodied energy in solar cells==
	Including cell manufacture, supports and structure. PV cells require very high amounts of energy to manufacture and are likely to be more economical to transport from Earth in the earlier stages of a colony. However, in the long term they produce far more energy than they embody, so solar can be envisioned as a sustainable energy production method for Mars. On ~~Erth soalr~~ cells produce their embodied energy in about one year or less. Mars should require 2+ years due to the lower solar constant. <ref name=":0" />		Including cell manufacture, supports and structure. PV cells require very high amounts of energy to manufacture and are likely to be more economical to transport from Earth in the earlier stages of a colony. However, in the long term they produce far more energy than they embody, so solar can be envisioned as a sustainable energy production method for Mars. On Earth solar cells produce their embodied energy in about one year or less. Mars should require 2+ years due to the lower solar constant. <ref name=":0" />
	{\| class="wikitable"		{\| class="wikitable"
	\|'''Photovoltaic (PV) Cells Type'''		\|'''Photovoltaic (PV) Cells Type'''

Michel Lamontagne at 16:30, 1 February 2023

2023-02-01T16:30:38Z

← Older revision		Revision as of 17:30, 1 February 2023
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	\|1300		\|1300
	\|900-1000		\|900-1000
	\|Based on 250 W/m2 lighting and 60 mT/m2/y production. This energy produces an equivalent yield of biomass. Food provides, on average, 3.87 MJ/kg.		\|Based on 250 W/m2 lighting and 60 mT/ha/y food production. This energy produces an equivalent yield of biomass. Food provides, on average, 3.87 MJ of energy per kg.
	\|ML		\|ML
	\|-		\|-