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Large scale power generation using fuel cells

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Large scale power generation using fuel cells

Postby shashidhar » Thu Jan 19, 2012 3:47 pm

large scale power generation using fuel cells
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Re: i need the details of this seminar topic

Postby Prasanth » Fri Jan 20, 2012 6:17 am

Fuel cell is an electrochemical energy conversion device which converts chemicals hydrogen and oxygen to produce electricity by slipping electrons from hydrogen. The hydrogen med is exceeded from natural gun, propane and other common fuel and oxygen is from air.
A fuel cell system consists of 3 major components
1. A fuel cell stack
2. A processor to extract pare hydrogen from the fuel source
3. A storage and conditioners system to adapt the fuel cell’s continuous power only out to fluctuating demand.
4. A mechanism for recovering heat from electrochemical process.
The remainder of the system consists of pumps compressors and controls.
Fuel cell stack: in fuel cell stack, purified hydrogen and oxygen from air pass through linked platter similar to those in battery .the electrochemical reaction generator electricity and heat.
An energy storage and power conditioners system adapts the fuel cell’s maximum power flour to fluctuating power loads. A battery storage system with dc-ac inventor stores power from low demand periods for use during peak demand .Heat recovery system directs heat from the jacket of water surrounding the fuel cell in to a preheat tank for the domes tie hot water system

There are different types of fuel cells
Research is underway to develop proton exchange membrane fuel cell.Proton exchange membrane fuel cell user one of the simplest reactions of any fuel cell.

PEM fuel cell history
PEM technology was developed after 1960. It was developed for U.S. Navy and Army. The first unit was fueled by hydrogen generated by mixing water and lithium hydride.
The next development in PEM Technology was for NASA’s project Gemini in the early days of the U.S. piloted space program .batteries had provided power for earlier missions, but future missions would be longer repairing a different power source.
By mid -1970s PEM cells were developed for under water life support leading to the US nay oxygen generation plant.


A SOFC uses yttria-stabilised zirconia as its electrolyte, sandwiched between the anode and the cathode. It runs at a temperature of around 1,000°C. The heat produced can be used in cogeneration applications or in a steam turbine to provide more electricity than that generated from the chemical reaction within the fuel cell (a bottoming cycle). A number of different fuels can be used, from pure hydrogen to methane to carbon monoxide, and the nature of the emissions from the fuel cell will vary correspondingly with the fuel mix.
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