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Alternative Energy Sources. Hydrogen Fuel Cell Vehicle. A device that combines Hydrogen and oxygen are to produce electricity. The electricity is used to power the vehicles electric motors. Video. Fuel Cell. A fuel cell is an electrochemical energy conversion device . - PowerPoint PPT Presentation
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Alternative Energy Sources
Hydrogen Fuel Cell Vehicle
A device that combines Hydrogen and oxygen are to produce electricity. The electricity is used to power the vehicles electric motors.
Video
Fuel Cell
A fuel cell is an electrochemical energy conversion device.
A fuel cell converts the chemicals hydrogen and oxygen into water, and in the process it produces electricity.
How a Fuel Cell works
Carbon Plate (Anode)
Catalyst Layer
Matrix (Electrolyte)
Catalyst Layer
Carbon Plate (Cathode)
ElectronsHydrogen
Oxygen
Water
Output per Cell
This reaction in a single fuel cell produces only about 0.7 volts.
To get this voltage up to a reasonable level, many separate fuel cells must be combined to form a fuel-cell stack.
What is holding back Fuel Cells?
Hydrogen is difficult substance to produce, store and distribute
To over come this problem, fuel cells convert readily available fuels into Hydrogen. This process is preformed by a device called a reformer.
Facts
One gallon of gasoline burned in an internal combustion engine releases twenty pounds of carbon dioxide
Fuel cells in vehicles can operate with efficiencies of 40-80% compared with 18% for "state-of-the-art" spark ignition engines
The first "commercial" use of fuel cells was by NASA in the 1960s
Companies are hoping to produce their first commercial models of fuel cell cars from 2003-2005
Ford’s Focus Package
Honda
FCXV3
BMW
5 Series
Ford
Focus
Converted Econo-line
Toyota
FCHV
Volkswagen
Hymotion
What is a Reformer
A reformer converts alcohol fuels into hydrogen. Unfortunately, reformers are not very
efficient. They generate heat and produce
hydrogen and other unwanted gasses
Reference
Heating with Wood, DOE, 2000
U.S. Dept. Of Energy, 2000
www.iowastateuniv.edu
The Value of the Benefits of US Biomass Power, 1999