Embodied energy - Revision history

RichardWSmith: /* Discussion */

2024-09-24T17:01:37Z

Discussion

2024-09-24T17:00:59Z

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

2024-09-24T15:43:18Z

References

2024-09-24T15:41:18Z

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

2024-09-24T15:40:09Z

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

2024-09-24T15:38:49Z

2024-09-24T15:37:47Z

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

2024-09-24T15:37:33Z

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

2023-02-14T16:49:17Z

Embodied energy in solar cells

2023-02-01T16:30:38Z

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 ==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 />

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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.''

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 |100,000
 |}
 ==References==
 <references />

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 ==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)
-*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"
 !'''Material'''

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 ==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)
-*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"
 !'''Material'''

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 |ML
 |-
-|'''Food'''
+|'''Food and biomass'''
 |1300
 |900-1000

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 ==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"
 |'''Photovoltaic (PV) Cells Type'''

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 |1300
 |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
 |-