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Fuel-cycle SO 2 emissions of EVs compared to those of gasoline ICEVs and HEVs in China, current (left) and future (right). The study examined the fuel-cycle CO 2 , SO 2 , and NO x emissions of EVs in China in both current (2008) and future (2030) periods and compared them with those of conventional gasoline vehicles and gasoline hybrids.
In regions where the share of coal-based electricity is relatively low, EVs can achieve substantial GHG reduction, the team reports in a paper in the ACS journal Environmental Science & Technology. According to the 12 th Five-Year Plan of the China Coal Industry (2011?2015)
by Michael Sivak, Sivak Applied Research The overall advantage of battery electric over gasoline vehicles, in terms of well-to-wheels emissions of greenhouse gases, has been well documented. However, the emissions of electric vehicles depend greatly on the energy source used to generate the electricity that powers them.
A new study by Michael Wang and Jeongwoo Han at Argonne National Laboratory and Xiaomin Xie at Shanghai Jiao Tong University assesses the effects of carbon capture and storage (CCS) technology and cellulosic biomass and coal co-feeding in Fischer-Tropsch (FT) plants on energy use and greenhouse gas (GHG) emissions of FT diesel (FTD).
A) CNG light-duty cars vs. gasoline cars; (B) CNG heavy-duty vehicles vs. diesel vehicles; and (C) combined-cycle natural gas plants vs. supercritical coal plants using low-CH 4 coal. On the one hand, a shift to natural gas is promoted as climate mitigation because it has lower carbon per unit energy than coal or oil.
Researchers at the Norwegian University of Science and Technology (NTNU) have compared the emissions resulting from the production, use, and end-of-life of electric and internal combustion engine vehicles (EVs and ICEVs) in a full life-cycle analysis (LCA).
note that the focus of their study was motivated in part by the unprecedented rise in popularity of electric two-wheelers in China. While conventional vehicle (CV) ownership and electricity consumption in China are both increasing rapidly—annual growth rates during the past decade were ? 90% is from coal. —Ji et al.
Electric vehicles charged in coal-heavy regions can create more human health and environmental damages from life cycle air emissions than gasoline vehicles, according to a new consequential life cycle analysis by researchers from Carnegie Mellon University.
A new study by a team from UC Berkeley and Stanford University suggests that determining the optimal use of biomass to reduce greenhouse gas emissions—i.e, suggested that converting biomass into electricity for EVs abates more GHG emissions than does converting biomass into liquid fuels for use in today’s conventional vehicles.
Advanced Coal Technologies. China is rapidly deploying supercritical and ultra-supercritical coal combustion plants, which have fewer emissions and are more efficient than conventional coal plants because they burn coal at much higher temperatures and pressures. Alternative Energy Vehicles. Renewable Energy. Solar fuels.
Direct land use, life cycle GHG emissions (excluding indirect land use change), and life cycle fossil fuel requirements to generate the transportation services provided by 17.8 × 10 12 MJ NCV of gasoline, the amount used in transportation in the US in 2009. Credit: ACS, Geyer et al. Click to enlarge.
biomass, coal, petroleum coke, and wastes) for the production of an ultra-clean syngas. This syngas can then be used for industrial process heating applications, converted into electricity, or synthesized into fuels or chemicals. OmniGas uses a 1300 °C molten slag to gasify a wide range of hydrocarbon feedstocks (e.g.,
Net emissions resulting from the use of plug-in hybrid electric vehicles (PHEVs) depend on the efficiency of the conventional vehicle fleet; PHEV CD (all-electric, charge-depleting mode) efficiency; charging strategy; battery pack capacity; driving patterns; and generator mix used for charging. —Peterson et al. Peterson, J.
Solid portions represent GHG emissions associated with gasoline propulsion. Patterned portions represent GHG emissions associated with electric propulsion. Solid left bar = hydro electricity scenario.) First, driving distance determines the proportions of electricity and gasoline consumed by the PHEV.
The second round was focused specifically on three areas of technology representing new approaches for advanced microbial biofuels (electrofuels); much higher capacity and less expensive batteries for electric vehicles; and carbon capture. Electrofuels: Biofuels from Electricity. The grants will go to projects in 17 states.
Professor George Miley of the University of Illinois Urbana-Champaign and director of its Fusion Studies Lab, reported on progress toward a “cold fusion battery”—a small power unit that uses a low energy nuclear reaction (LENR) (i.e., More and more people are becoming interested in it. He is with Dixie State College in St.
While natural gas can reduce greenhouse emissions when it is substituted for higher-emission energy sources, abundant shale gas is not likely to substantially alter total emissions without policies targeted at greenhouse gas reduction, according to a new study by two researchers at Duke University. Richard G.
The study, in press in the Journal of Power Sources , examines the efficiency and costs of current and future EVs, as well as their impact on electricity demand and infrastructure for generation and distribution, and thereby on GHG emissions. All reference car configurations except the diesel use gasoline engines, because the.
Coal-powered synthetic natural gas (SNG) plants being planned in China would produce seven times more greenhouse gas emissions than conventional natural gas plants, and use up to 100 times the water as shale gas production, according to a new study by Duke University researchers published in the journal Nature Climate Change.
For example, near-term CCS technology applied to coal-fired power plants is projected to reduce the net output of the plant by some 30% and to increase the cost of electricity by 60–80%. The energy needed for this process decreases the amount that can go into making electricity. —Lin et al.
Researchers from the University of Minnesota have produced a spatially and temporally explicit life cycle inventory (LCI) of air pollutants from gasoline, ethanol derived from corn grain, and ethanol from corn stover for the contiguous US (the lower 48 states). Dashed lines show US average emissions. Credit: ACS, Tessum et al.
Rice University researchers have determined a more effective way to use natural gas to reduce climate-warming emissions would be in the replacement of existing coal-fired power plants and fuel-oil furnaces rather than burning it in cars and buses.
Left, global light-duty fleet in the electric-favoring case; right, the hydrogen-favoring case. In both electric- and hydrogen-favoring cases, availability of low-carbon electricity and hydrogen prolonged the use of petroleum-fueled ICE vehicles. Top, without CCS and CSP; bottom, with CCS and CSP. Credit: ACS, Wallington et al.
A recent study by researchers from UC Berkeley and colleagues from ICF International and Stanford University analyzed the thermodynamic efficiency of a compressed-air car powered by a pneumatic engine and considered the merits of compressed air versus chemical storage of potential energy. Resources.
Strategies to promote adoption of hybrid electric vehicles (HEVs) and plug-in hybrid electric vehicles (PHEVs) with small battery packs offer more social benefits (i.e., In our base case, we assume average US values for emissions and damage valuation of electricity generation, oil refining, vehicle. Michalek and colleagues.
Researchers at the University of Colorado, Boulder and the National Renewable Energy Laboratory (NREL) modeled the emissions impact had plug-in hybrid electric vehicles (PHEVs) replaced light duty gasoline vehicles in the Denver, Colorado area in summer 2006. Brinkman et al. For other areas, where PM2.5 Brinkman et al.
A new paper from the Carnegie Mellon Electricity Industry Center concludes that while a market-based mechanism (e.g. A new paper from the Carnegie Mellon Electricity Industry Center concludes that while a market-based mechanism (e.g. For electric power. Samaras et al. The same is true of natural gas-fired plants.
A team at the University of Michigan Transportation Research Institute (UMTRI) study has assessed the relative amounts of greenhouse-gas emissions from driving a battery-electric vehicle (BEV) compared with greenhouse-gas emissions from driving a traditional gasoline-powered vehicle in different countries of the world.
Perspective by Professor Bruce Dale, Michigan State University. Until early last year, it was widely accepted that biofuels such as ethanol significantly reduce total greenhouse gas (GHG) emissions compared to gasoline. Let’s say an automaker makes more battery-powered electric vehicles, thus using more nickel for the batteries.
Researchers at MIT and the Ford Motor Company have found that depending on the location, lightweight conventional vehicles could have a lower lifecycle greenhouse gas impact than electric vehicles, at least in the near term. Their paper is published in the ACS journal Environmental Science & Technology. —Wu et al.
Eagle Picher, in partnership with the Pacific Northwest National Laboratory, will develop a new generation of high energy, low cost planar liquid sodium beta batteries for grid scale electrical power storage applications. Arizona State University, in partnership with Fluidic Energy Inc., Earlier post.) DOE grant: $7,200,000).
Researchers at George Washington University led by Dr. Stuart Licht have introduced the principles of a new class rechargeable molten air batteries that offer amongst the highest intrinsic electric energy storage capabilities. Generalized form of the molten air battery. Licht et al. Click to enlarge.
The participants reported virtually no difference in driving experience compared to regular gasoline- or diesel-fueled cars. liter, 127 hp engine which can run on both 100% methanol (M100) and gasoline. The version used in the fleet test has a 50-liter methanol tank as well as a 10-liter gasoline tank. It features a 1.8-liter,
The authors highlight three possible strategies for CO 2 conversion by physico-chemical approaches: sustainable (or renewable) synthetic methanol; syngas production derived from flue gases from coal-, gas- or oil-fired electric power stations; and photochemical production of synthetic fuels. Jiang et al. Click to enlarge.
Using corn crop residue to make ethanol and other biofuels reduces soil carbon and under some conditions can generate more greenhouse gases than gasoline, according to a major, multi-year study by a University of Nebraska-Lincoln team of researchers published in the journal Nature Climate Change. The uncompressed input data totalled ?3
The consortium includes the Idaho National Laboratory of the Department of Energy (DOE), two top US universities, and materials technology firm Media & Process Technology. Plants with electric power output greater than 50% of total energy output that operate on more than 55% coal as a feedstock are ineligible.
In a new study published in the journal Applied Energy , Carnegie Mellon University (CMU) researchers found that controlled charging of plug-in hybrid electric vehicles (PHEVs) reduces the costs of integrating the vehicles into an electricity system by 54–73% depending on the scenario.
Researchers at Carnegie Mellon University (CMU) have published two new policy briefs, along with accompanying videos, about the benefits of electrified vehicles and the potential for their adoption in the US. Further, drivers should not be encouraged to charge at night in coal-heavy regions.
Petrie Professor in Ecology and Evolutionary Biology at Princeton University and chair of the committee. Unlike carbon capture and storage technologies that remove carbon dioxide emissions directly from large point sources such as coal power plants, NETs remove carbon dioxide directly from the atmosphere or enhance natural carbon sinks.
Regionally specific lifecycle CO 2 emissions per mile traveled for plug-in hybrid electric vehicles (PHEVs) and battery electric vehicles (BEVs) in the US can vary widely based on grid emission factors (i.e., Under some conditions, the battery electric Nissan LEAF can produce higher emissions than a Toyota Prius hybrid.
Researchers at the University of California, Riverside’s Center for Environmental Research and Technology (CERT) at the Bourns College of Engineering have received two grants to further explore a steam hydrogasification process they developed to convert waste into fuels. diesel, gasoline, jet) at low cost. Click to enlarge.
Results from the study also suggest that with sufficient coal plant retirement and sufficient wind power, controlled charging could result in positive net benefits instead of negative. The question of electricity costs vs. health and environmental cost is important to ask everywhere, Michalek said. Credit: ACS, Weis et al.
In 2019, Amazon announced plans to obtain 100,000 electric delivery vehicles. UPS has ordered 10,000 of them and FedEx plans to be fully electric by 2040. The U-M researchers found that 50% to 80% of the lifetime emissions associated with an electric delivery vehicle’s battery occur during charging.
A new study by researchers at the University of Colorado at Boulder projects the emission impacts of the widespread introduction of inexpensive and efficient electric vehicles into the US light duty vehicle (LDV) sector. Among their findings: Gasoline vehicles dominate in the BAU scenario for the entire time horizon.
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