- Choosing Fuels
- Different fuels have different properties, a good fuel will burn easily producing a lot of heat energy and it will not produce much pollution
- Hydrogen produces only water when it burns in the air - it also releases a lot of energy per kilo
- However, it's more difficult to store than petrol or diesel because it must be compressed.
- Hydrogen and oxygen can also be combined in a fuel cell to produce electricity
- Before cars with fuel cells can become widely used, hydrogen has to be easily and economically available.
- Petrol, kerosene and diesel are all non-renewable fossil fuels. Methane is a non-renewable fossil fuel found in natural gas. Coal is a non-renewable fossil fuel that produces a lot of ash when it burns.