Energy return on investment (redirect from EROEI)
investment (EROI), also sometimes called energy returned on energy invested (ERoEI), is the ratio of the amount of usable energy (the exergy) delivered from...
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Embodied energy (section EROEI)
be multiplied by 1 EROEI-1 {\displaystyle {\frac {\hbox{1}}{\hbox{EROEI-1}}}} in order to get the embodied energy. Given an EROEI amounting to eight e...
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processing, a ratio known as "Energy Returned on Energy Invested" (EROEI). An EROEI of 2 (or 2:1 ratio) would mean that to produce 2 barrels of actual...
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processes, the EROEI for oil shale is below the EROEI of about 20:1 for conventional oil extraction at the wellhead. A 1984 study estimated the EROEI of the different...
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and intelligent energy management. Energy returned on energy invested (EROEI) is the ratio of energy delivered by an energy technology to the energy...
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EROEI). Currently, between one and five barrels of oil are recovered for each barrel-equivalent of energy used in the recovery process. As the EROEI drops...
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referred to as the Energy Return on Energy Investment (EROI or EROEI). Should the EROEI drops to one, or equivalently the Net energy gain falls to zero...
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accounting Energy & Environment Energy balance Energy policy Energy subsidy EROEI Industrial ecology International Energy Agency List of energy storage projects...
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Elsevier under its "North Holland" imprint Energy returned on energy invested (EROEI), ratio of the amount of usable energy acquired from a particular energy...
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efforts. The most studied of these may be Energy Return on Energy Invested or EROEI, discussed at length in an Encyclopedia of the Earth article and in an OilDrum...
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producers to be economical the ratio of energy returned on energy invested (EROEI) or energy return on investment (EROI) should be large enough. If the final...
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reduced EROEI, and therefore put a brake on, and potentially reverse, long-term economic growth, leading to secular stagnation. Linked to the EROEI argument...
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modern statistics to show that marginal returns on investments in energy (EROEI), education and technological innovation are diminishing today. The globalised...
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pumps. Cost of electricity by source Energy efficiency (disambiguation) EROEI Exergy efficiency Figure of merit Heat of combustion International Electrotechnical...
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and processing (Energy Returned on Energy Invested, or EROEI). A 1984 study estimated the EROEI of the various known oil shale deposits as varying between...
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invested is a chief cause of the collapse of complex societies. Falling EROEI due to the depletion of non-renewable resources also poses a difficult challenge...
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limits to growth, overpopulation, overshoot, energy return on energy input (EROEI), taxation of energy resources, renewable energy alternatives, and resource...
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a ratio known as "Energy Returned on Energy Invested" (EROEI). A 1984 study estimated the EROEI of the various known oil-shale deposits as varying between...
42 KB (4,182 words) - 08:38, 25 August 2024
transport and distribution. After taking all three sectors into account, the EROEI (Energy Return over Energy Invested) for sugarcane ethanol is about 8. There...
196 KB (19,091 words) - 23:15, 17 September 2024
to the energy payback time, is the energy returned on energy invested (EROEI) or energy return on investment (EROI), which is the ratio of electricity...
105 KB (11,722 words) - 18:13, 26 August 2024
cyanobacteria is unfeasible, as the energy return on energy invested (EROEI) is unfavorable. The EROEI is not advantageous as numerous large, closed loop bioreactors...
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important consideration, as is the energy returned on energy invested (EROEI). Between these two factors, roughly 20% must be added to the energy of...
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order to produce energy. To be useful the energy return on energy invested (EROEI) has to be greater than one. The net energy gain from the production of...
79 KB (9,208 words) - 12:49, 4 September 2024
Since a barrel of oil equivalent is about 6.117 gigajoules (1,699 kWh), its EROEI is 5–6. That means this extracts about 5 or 6 times as much energy as is...
142 KB (18,068 words) - 22:34, 12 September 2024
CERA, which counts unconventional sources in reserves while discounting EROEI, believes that global production will eventually follow an “undulating plateau”...
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existing petroleum infrastructure. The energy returned on energy invested (EROEI) of these processes is uncertain and/or has not been measured. Furthermore...
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While the EROEI and economics of corn based ethanol are a bit weak, it paves the way for cellulosic ethanol which should have much better EROEI and economics...
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tonnes of CO2 per tonne of uranium mined. Energy return on investment (EROEI) for a PWR nuclear power plant ranges from 75 to 100 meaning total energy...
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ERO—Electric Reliability Organization. The US designated NERC as its ERO. ERoEI—Energy returned on energy invested ERRA—Energy Regulators Regional Association...
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living creatures is limited by the concept of energy return on investment (EROEI): that any living thing or living societies can survive only so long as...
10 KB (1,089 words) - 17:13, 16 June 2024