alternative energy sources. hydrogen fuel cell vehicle a device that combines hydrogen and oxygen...
TRANSCRIPT
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Alternative Energy Sources
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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
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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.
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How a Fuel Cell works
Carbon Plate (Anode)
Catalyst Layer
Matrix (Electrolyte)
Catalyst Layer
Carbon Plate (Cathode)
ElectronsHydrogen
Oxygen
Water
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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.
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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.
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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
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Ford’s Focus Package
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Honda
FCXV3
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BMW
5 Series
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Ford
Focus
Converted Econo-line
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Toyota
FCHV
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Volkswagen
Hymotion
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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
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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