EAST BAY CLEAN CITIES COALITION Alternative Fuels Overview Date Richard Battersby Director, East Bay Clean Cities Coalition Clean Cities / 1
Download ReportTranscript EAST BAY CLEAN CITIES COALITION Alternative Fuels Overview Date Richard Battersby Director, East Bay Clean Cities Coalition Clean Cities / 1
EAST BAY CLEAN CITIES COALITION Alternative Fuels Overview Date Richard Battersby Director, East Bay Clean Cities Coalition 1 Clean Cities / 1 U.S. Energy Consumption Source: Annual Energy Outlook 2009. Energy Information Administration. Clean Cities / 2 U.S. Petroleum Trends Source: Annual Energy Outlook 2009. Energy Information Administration. Clean Cities / 3 U.S. Petroleum Trends Source: Annual Energy Outlook 2009. Energy Information Administration. Clean Cities / 4 U.S. Petroleum Trends Source: Annual Energy Outlook 2009. Energy Information Administration. Clean Cities / 5 Petroleum Displacement Strategies Replace petroleum with alternative fuels and low-level blends. Reduce by promoting energy efficiency in vehicles through advanced technologies and more fuel efficient vehicles. Eliminate by promoting idle reduction, greater use of mass transit, trip elimination, and other congestion mitigation approaches. Clean Cities / 6 Eliminate Clean Cities Alternative Fuels Portfolio Alternative Fuels • Biodiesel (B100, B20) • Electricity • Ethanol (E85) • Hydrogen • Methanol • Natural gas • Propane • P-Series Clean Cities / 7 Blended Fuels • Biodiesel/diesel blends (B2, B5) • Ethanol/gasoline blends (E10) • Hydrogen/natural gas blends (HCNG) Biodiesel Properties • Produced from renewable sources such as new and used vegetable oils and animal fats. • Physical properties are similar to petroleum diesel. • Higher flashpoint makes it safer to handle, store, and transport. Clean Cities / 8 Biodiesel Considerations • Nontoxic and biodegradable • Reduction of unburned hydrocarbons, carbon monoxide and particulate matter • Greenhouse gas and air quality benefits • More lubricity than petroleum diesel • Positive energy balance • Cold weather starting and storage issues • 8% less energy per gallon than petroleum diesel Clean Cities / 9 Biodiesel Use • B20 is the most common blend in U.S. • Used in all unmodified diesel engines. • Has similar payload capacity, range, horsepower, and torque as diesel. • Used to fuel compression-ignition (diesel) engines. • Promises rural and urban microeconomic benefits. Clean Cities / 10 Biodiesel Truck Electricity Properties • An electric vehicle (EV) stores electricity in an energy storage device. • Electric motor powers wheels. • Must be replenished by plugging into an electrical source or using an onboard charger. • Electricity can be generated by (or produced from) coal, natural gas, nuclear, wind, and other renewables. Clean Cities / 11 Electricity Considerations • No tailpipe emissions • Range of 50-130 miles • Fueling costs reasonable compared with gasoline, especially off-peak rates • Electricity costs vary depending on location, type of generation, and time of use • Vehicles with DC electric systems = 0.4 kilowatt-hours (kWh) per mile • Vehicles with AC systems = 0.174 to 0.288 kWh per mile • Energy storage capacity limited Clean Cities / 12 Electricity Use • Two types: EVs and HEVs, both use batteries. • Hybrids use an electric motor or a combination of a gasoline engine and electric motor. • Electricity sources for battery recharging include electrical outlet, gasoline engine onboard vehicle, regenerative braking. • Hybrids use batteries to store electricity produced by regenerative braking and the onboard generator. Clean Cities / 13 Hybrid Electric Vehicle Ethanol Properties • Clear, colorless liquid • Alcohol-based fuel produced from starch crops or cellulosic biomass • Corn is primary feedstock • High-octane fuel • As an alternative fuel, most commonly used as E85 (85% ethanol, 15% gasoline) Clean Cities / 14 Ethanol Considerations • Biofuels could replace 30% or more of U.S. gasoline demand by 2030. • Corn-based ethanol production and use reduces GHG emissions by up to 52% compared with gasoline (cellulosic by 86%). • Refueling infrastructure not in place in all areas. • There is a high level of fuel pricing volatility. • Corn-based ethanol has 27%-36% less energy content than gasoline. • Ethanol industry creates jobs and helps the economy. Clean Cities / 15 Ethanol Considerations • Production of corn-based ethanol has grown sharply since the early 1980s. • Corn-based ethanol is approaching “blend wall” of 15 billion gallons. • Less than 10% of the U.S. field corn crop is used in corn-based foods. • Despite the wider use of U.S. agricultural feedstocks for renewable fuels, USDA estimates only a modest increase in household food costs. • As a result of the RFS-2, annual wholesale U.S. food costs are estimated to increase by $7. Clean Cities / 16 Ethanol Considerations • • • • Ethanol has a positive energy balance. Corn yield is a critical part of the net energy balance estimation. Ethanol production facilities include both dry- and wet-milling operations. Energy ratio is 1.57 for wet-milling, 1.77 for dry-milling. • The weighted average energy ratio is 1.67. Clean Cities / 17 Ethanol Use • Nearly half of U.S. gasoline contains ethanol as E10. • E85 is used in light-duty flexible fuel vehicles (FFVs). • FFVs can use 100% unleaded gasoline or any ethanol blend. • FFVs have a 25% reduction in ozoneforming emissions compared with gasoline. • FFV power, acceleration, payload, and cruising speed are comparable whether running on ethanol or gasoline. • Consumer interest in converting existing gasoline vehicles to operate on ethanol. Clean Cities / 18 Flexible Fuel Vehicle Ethanol Use Total U.S. Light-Duty E85 FFVs 8 Million FFVs 7 6 5 4 3 2 1 0 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008* Source: Alternative Fuels and Advanced Vehicles Data Center Clean Cities / 19 Hydrogen Properties • Hydrogen exists in water, hydrocarbons (such as methane), and organic matter. • The energy in 2.2 lb of hydrogen gas is about the same as the energy in 1 gallon of gasoline. • Steam reforming of methane (natural gas) accounts for about 95% of the hydrogen produced in the U.S. • ~9 million tons of hydrogen is produced in the U.S. each year. • Most is used for refining petroleum, treating metals, producing fertilizer, and processing foods. Clean Cities / 20 Hydrogen Considerations • Pure hydrogen contains no carbon thus burns to form water with no CO2 or CO emissions. • Fuel-cell vehicle’s have the potential to be 2 to 3 times more efficient than gasoline vehicles. • Fuel cells use a direct electrochemical reaction to produce electricity on board the vehicle. • A light-duty vehicle must store 11-29 lbs. of hydrogen to drive about 300 miles. Clean Cities / 21 Hydrogen Use • Currently used in modified internal combustion engines. • Honda FCX is the only commerciallyavailable vehicle. • Several OEMs have pre-production light-duty vehicles in demonstration projects. • Hydrogen can be blended with natural gas to create a fuel for natural gas vehicles. Clean Cities / 22 Hydrogen Fuel-Cell Vehicle Natural Gas Properties • Mixture of hydrocarbons, predominantly methane (CH4) • High octane rating • Nontoxic, noncorrosive, and noncarcinogenic • Not a threat to soil, surface water, or groundwater • Compressed natural gas (CNG) and liquefied natural gas (LNG) • Lower ozone-forming emissions then gasoline • From gas and oil wells Clean Cities / 23 Natural Gas Considerations • Natural gas (NG) is a domestically available, clean-burning fuel. • Additional safety modification for facilities is required by NEC and NFPA. • NG vehicles cost more because of tank configuration. • A CNG-powered vehicle gets about the same fuel economy as a gasoline vehicle. • To store more energy in a smaller volume, natural gas can be liquefied (LNG). • LNG occupies only 1/600 the volume of natural gas (vapor) form. Clean Cities / 24 Natural Gas Use • There are two types of natural gas vehicles: bifuel and dedicated. • There is widespread natural gas distribution and refueling infrastructure. • CNG refueling stations are either slow-fill or fast-fill. • CNG can be used in light-, medium-, and heavy-duty vehicles. • LNG fuel systems are used with heavy-duty vehicles and locomotives. Clean Cities / 25 CNG Vehicle Propane Properties • By-product of natural gas processing and crude oil refining • Known as liquefied petroleum gas (LPG) • High octane • 33%-41% less energy content per gallon than gasoline • 60% reduction in ozone-forming emissions compared with gasoline Clean Cities / 26 Propane Considerations • Nontoxic and no threat to soil, surface water, or groundwater • High energy density = good driving range • Stored onboard a vehicle in a tank pressurized to around 300 psi • Range vs. payload reduction issue caused by larger fuel tanks • A gallon of propane about 25% less energy than a gallon of gasoline • Liquid Propane Injection engines— higher fuel efficiency • Widespread infrastructure Clean Cities / 27 Propane Use • Propane is the most used alternative transportation fuel in the U.S. and the world. • Used in light- and medium-duty vehicles, heavy-duty trucks, and buses. • Many propane vehicles are converted gasoline vehicles. • Popular choice for nonroad vehicles such as forklifts and agricultural and construction vehicles. Clean Cities / 28 Propane Bus Alternative Fuel Prices Source: Clean Cities Alternative Fuels Price Report, April 2009 Clean Cities / 29 Alternative Fuel Prices Source: Clean Cities Alternative Fuels Price Report, April 2009 Clean Cities / 30 Consumption of Alternative Fuels Estimated Consumption of Alternative Fuel by AFVs in the U.S. 200,000 Thousand GGEs 180,000 160,000 140,000 120,000 100,000 80,000 60,000 40,000 20,000 CNG LNG M85 M100 E85 E95 Electricity Hydrogen CNG LNG M85 M100 E85 E95 Electricity Hydrogen 0 Source: AFDC Clean Cities / 31 Clean Cities Contact Information Clean Cities Web site www.eere.energy.gov/cleancities Alternative Fuels & Advanced Vehicles Data Center Web site www.afdc.energy.gov Clean Cities Coordinator Contact Information and Coalition Web sites http://www.afdc.energy.gov/cleancities/progs/coordinators.php East Bay Clean Cities Coalition Web site http://www.eastbaycleancities.org Clean Cities / 32