Hydrogen buses are powered by an electric powertrain whereby fuel cells convert the chemical energy of hydrogen into electrical energy. Hydrogen is stored in compressed tanks, typically on the roof of the bus. Hydrogen fuel cell buses produce no tail-pipe emissions and are classed on ‘zero emission capable’.
Are hydrogen buses safe?
With the exception of oxygen, any gas can cause asphyxiation in high enough concentrations. Because hydrogen rises and disperses so rapidly, it is unlikely to cause asphyxiation. Hydrogen is non-toxic and nonpoisonous.
Do buses run on hydrogen?
Unlike buses that run on fossil fuels, a hydrogen fuel cell electric bus is powered by two of earth’s most common basic components —oxygen and hydrogen. A fuel cell combines hydrogen and oxygen to produce electricity, heat, and water. Fuel cells are similar to batteries.
Is hydrogen fuel cheaper than gasoline?
While hydrogen is a cheaper fuel than gasoline on paper, the reality is, as of 2010, it is much more expensive. The few models of hydrogen-fueled cars that are commercially available generally cost more than $100,000. Researchers are still tweaking the technology to produce and transport hydrogen fuel.
What fuel do buses use?
Propane (a hydrocarbon gas liquid) is used in cars, buses, and trucks. Most of the vehicles that use propane are in government and private vehicle fleets. Electricity is used by public mass transit systems and by electric vehicles.
Is hydrogen fuel liquid or gas?
LIQUEFACTION: Chilled to near absolute zero, hydrogen gas turns into a liquid containing one-quarter the energy in an equivalent volume of gasoline. The technology is well-proven: For decades, NASA has used liquid hydrogen to power vehicles such as the space shuttle.
How far can a hydrogen bus go?
Hydrogen-powered vehicles have a range similar to conventional diesel vehicles achieving 350-400 miles on a single tank of fuel, and they can be refuelled within 3-5 minutes.
Do buses use fossil fuels?
3. Based on lifecycle GHG emissions, electric buses perform the best, when compared with diesel hybrid buses and CNG buses run on fossil fuels. … The performance of CNG buses and diesel buses vary with respect to NOX emissions.
What does a bus use?
The most common power source since the 1920s has been the diesel engine. Early buses, known as trolleybuses, were powered by electricity supplied from overhead lines. Nowadays, electric buses often carry their own battery, which is sometimes recharged on stops/stations to keep the size of the battery small/lightweight.