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U Calgary study finds oil shale most energy intensive upgraded fuel followed by in-situ-produced bitumen from oil sands

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A team at the University of Calgary (Canada) has compared the energy intensities and lifecycle GHG emissions of unconventional oils (oil sands and oil shale) alongside shale gas, coal, lignite, wood and conventional oil and gas. Earlier post.). —Nduagu & Gates.

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Understanding the variability of GHG life cycle studies of oil sands production

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Full-fuel-cycle GHG emissions estimates for reformulated gasoline pathways by LCA study. Nominal value of 70 g CO 2 /MJ for combustion emissions is applied evenly across all studies. He found that the variation in oil sands GHG estimates is due to a variety of causes. Credit: ACS, Brandt 2012. Click to enlarge.

Oil-Sands 225
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Researchers Suggest That Although CCS and Other Technologies Could Reduce Oil Sands GHG Emissions to Near Zero, That Strategy May Not Make Sense

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Examples of emerging oil sands related technologies and trade-offs. The paper is an examination of how various choices about the scale of the life cycle analysis applied to oil sands (i.e., The source material is neither oil nor tar but bitumen, but is most generally described as an example of ultraheavy oil.”.

Oil-Sands 225
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Argonne study finds shale gas GHG lifecycle emissions 6% lower than natural gas, 23% lower than gasoline and 33% lower than coal; upstream methane leakage a key contributor

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Gasoline section shows results for fuel derived from both conventional oil and oil sands. However, the range in values for shale and conventional gas overlap, so there is a statistical uncertainty whether shale gas emissions are actually lower than those of conventional natural gas. Click to enlarge.

Gas 284
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Researchers Say Mix of Policies and Current or Near-Term Technologies Could Phase Out US CO2 Emissions from Coal-Fired Power Plants by 2030

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Life-cycle GHG emissions from fossil and alternative sources of electricity. The authors are Pushker Kharecha and James Hansen from NASA Goddard Institute for Space Studies & Columbia University Earth Institute (GISS); Charles Kutscher from the National Renewable Energy Laboratory; and Edward Mazria from 2030 Inc./ Kharecha et al.

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Stanford, UC Santa Cruz study explores ramifications of demand-driven peak to conventional oil

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In contrast to arguments that peak conventional oil production is imminent due to physical resource scarcity, a team from Stanford University and UC Santa Cruz has examined the alternative possibility of reduced oil use due to improved efficiency and oil substitution. 2010, to above 140 $/bbl in constant 2010 dollars).

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Heating Buildings With Solar Energy Stored in Sand

Cars That Think

As we try to objectively study nature, we are often reminded of how natural forces affect us personally. When we turn up the heat in our homes and workplaces, we must balance our personal need for warmth with the global impact of burning fossil fuels like oil, gas, coal, and biomass. There is nothing special here!”

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