beyond gasoline: concept cars. plug-in hybrid (phev)
Post on 21-Dec-2015
223 views
TRANSCRIPT
Beyond Gasoline: Concept Cars
Plug-In Hybrid (PHEV)
EV
Electric Cars have not been successful.Large heavy batteriesShort driving rangeSlow refueling (recharging) process.
GM EV-1
Produced by GM from 1996-199.
Tesla
Tesla Roadster may represent a new direction.Uses new lighter batteries.Expensive.
GM Volt
Li-Ion batteries and a gasoline engine. The gasoline engine will run a
generator to recharge the batteries, but will not directly power the vehicle. (no gasoline motor)
Fuel Cell Vehicles
Internal Combustion Engine
Engine – 20% efficient
Only 20% of gasoline energy is converted to motion.
Fuel Cells and the Hydrogen Economy
Fuels Cells use hydrogen to produce electrical energy. They do not burn hydrogen.
2H2 +O2 2H2O + energy
Fuel cells could be used to power cars with hydrogen as the fuel.
Clean fuel
Barriers to Hydrogen Cars
Still in development
Expensive On-vehicle
storage of hydrogen fuel
Availability of hydrogen fuel
Infrastructure
Fuel Cells
In development stage.
Currently very expensive.
Are not a source of energy.
Hydrogen must be supplied.
FuelCell Energy
Based in Danbury Produces Direct
Fuel Cells Stationary not
mobile Distributed
Generation
Eastern is considering a 1 MW unit similar to this.
UTC Power
Based in Hartford Produces Fuel
Cells Both Stationary
and mobile Car engines are
very expensive
Connecticut Global Fuel Cell Center
Engineering research center at UConn
Hydrogen Sources
Steam reforming of natural gas:
CH4 +2H2O CO2 + 4H2
Electrolysis:
2H2O + energy 2H2 + O2
Energy Source for Electrolyzer
Electrolysis requires energy.
Energy could come from Solar, Nuclear, or Wind.
In the short term, it would probably come from coal.
Vehicle Carbon Emission(grams per mile)
Fuel Cell with electricity from coal 440
Conventional with gasoline 370
Conventional with natural gas 310
Hybrid with gasoline 190
Hybrid with natural gas 170
Fuel Cell with hydrogen from reforming 140