Predominant Fuel Cell:
Hydrogen Energy is alternative name for Fuel Cell. Hydrogen (H element) has usually been called as the perfect fuel. It is a significant reserve on earth (Ex. Water) and it is exhaustible. The utilization of hydrogen is compatible with nature, instead of intrusive. We will never run out of Hydrogen. After all it’s not a primary energy supply like oil and coal, however rather a clean energy carrier like electricity. Hydrogen is attractive because it can be stored and transported over long distances by pipelines, whereas power lines are costly to build and engender loss in transmission.
The commercial production of Hydrogen by atmospheric friendly strategies using nuclear energy, solar energy and water without any help of catalysts, are being investigated.
Systems are investigated to use concentrated sunlight to create the heat that is required to separate water into hydrogen and
oxygen that has the potential for being economically viable. Another type of system uses concentric nuclear thermal energy to
reform natural gas and steam into a mixture of carbon dioxide and hydrogen. The method will increase the energy content of
natural gas by twenty percent with embodied solar energy. One plan is to produce nuclear electricity, use it to produce electricity during the day and to produce electricity in a fuel cell during the night and shut the cycle by recycling the water.
Fuel cells are electrochemical devices that combine hydrogen and oxygen, by setting up an electrical charge across a membrane, which can be used to produce a steady flow of electricity with no moving parts. A fuel cell system which includes a ‘fuel reformer’ can utilize the hydrogen from any other source like gasoline, natural gas or methanol. Natural gas is more abundant than oil and has been less heavily exploited so far, raising the prospect that it will be the dominant energy source this century and could form a kind of ‘bridge’ to hydrogen till such time as a cheaper renewable source of energy is found for splitting water to get hydrogen.
In space program hydrogen is used to provide all of the shuttle’s electric power from on-board fuel cells. The fuel cells exhaust pure water is used for drinking water by the crew.
The likely immediate application for the fuel cells will be a fuel cell battery combination known as a ‘hybrid’. The hydrogen fuel cell can constantly charge the battery, which is able to run the electrical motor powering the automobile. Fuel cells provides a lot of energy density, or the ability to travel long distances, while batteries provide power density, or the ability to accelerate quickly. A hybrid allows one to have both at the same time.
Fuel cells hold out great prospects as a conduit through which electricity can be generated from hydrogen. Thus we have the option of ‘decarburising’ not only fossil fuels but even biogas and ‘sequestering’ the carbon dioxide from the earth.