the Hydrogen Economy
The hydrogen economy a potential system to replace a carbon based energy system. There are advantages to such a change:
- reduced overall carbon emissions.
- electricity is generated on demand.
- the use of hydrogen gas as a fuels as 1 kg of hydrogen contains the same energy as 2.5 kg of natural gas or 2.7 lk of petrol.
- internal combustion engines can reengineered to use hydrogen as a fuel.
But there issues with a change to a hydrogen based economy.
One claim is that a lot of energy is wasted and only 25% of the energy is available for practical use (physorg, 2006).
Hydrogen and fuel cells
The hydrogen fuel cell generates electricity on demand from the hydrogen fuel supply.
(physorg, 2006) www.physorg.com