Hydrogen fuel cells as a part of the system for accumulation of electric energy

Moldrik, Petr; Sebesta, Robert

doi:10.1109/epqu.2009.5318860

Cited by 2 publications

(4 citation statements)

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“…That is actually the reason, why the efficiency of high temperature cells is lower compared to the low temperature units. [6] The negative aspect of the reaction within a fuel cell is that the energy released during the reaction would not be absorbed. Therefore the process does not provide for utilisation of the entire volume of energy corresponding to the reaction enthalpy as work.…”

Section: A Fuel Cell Efficiencymentioning

confidence: 99%

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PEM fuel cells — The basic characteristics

Moldrik

Chvalek

2011

2011 10th International Conference on Environment and Electrical Engineering

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With regards to their high effectiveness in transformation of input energy of chemical bonds into the output electric and heat energy and environmental friendly nature, fuel cells have been addressed with great potential prospective. There are various installations of large stationary sources in all over the globe, with unit output of megawatts and these are based on the fuel cells principle. The current development in this field aims towards the increase in efficiency on transformation of fuel energy into the output energy. This paper describes basic characteristics PEM (Proton Exchange Membrane) type fuel cells. Those are low-temperature fuel cells, which are currently commonly used in broad range of applications both in the field of stationary or mobile assemblies. This paper is linked to another one, which deals with the effect of fuel parameters on the efficiency of transformation of energy from chemical bonds into utilisable electric and heat energy as well as the quality of energy supplied.

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Section: A Fuel Cell Efficiencymentioning

confidence: 99%

“…water, which can be produced either in gaseous or liquid state. As far as fuel cells are concerned, the resultant water will be in gaseous state and the enthalpy of reaction can be calculated using the formula below [6]: ( ) 242 230…”

Section: A Fuel Cell Efficiencymentioning

confidence: 99%

PEM fuel cells — The basic characteristics

Moldrik

Chvalek

2011

2011 10th International Conference on Environment and Electrical Engineering

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Section: B Pem Fuel Cellmentioning

confidence: 99%

“…That is actually the reason, why the efficiency of high temperature cells is lower compared to the low temperature units. [11] The negative aspect of the reaction within a fuel cell is that the energy released during the reaction would not be absorbed. Therefore the process does not provide for utilisation of the entire volume of energy corresponding to the reaction enthalpy as work.…”

Section: B Pem Fuel Cellmentioning

confidence: 99%

Hydrogen production for solar energy storage

Moldrik

Hradilek²

2011

REPQJ

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Abstract. Using solar energy in photovoltaic power plants is an important method of electricity generation from renewable sources. Its potential is vast and technically easy to utilise. At present, photovoltaic power plants are the fastest-growing renewable energy source (RES) in the Czech Republic. Their installed capacity reached 1390 MWp (December 2010). Only in the last two years more than 1300 MWp was put in operation. This rapid development of photovoltaic sources is having a negative effect on the electric power system control. One option for mitigating this effect is to store the energy generated by photovoltaic in times of excess power in the grid and supply it to the grid when required, i.e., during peak periods of the daily load curve. There are numerous different storage technologies. The hydrogen system can be used to provide for storage of electric power in large amounts as well. This paper describes the state-of-the-art in the field of our research into solar energy storage in the Technical University of Ostrava.

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Hydrogen fuel cells as a part of the system for accumulation of electric energy

Cited by 2 publications

References 1 publication

PEM fuel cells — The basic characteristics

PEM fuel cells — The basic characteristics

Hydrogen production for solar energy storage

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Hydrogen fuel cells as a part of the system for accumulation of electric energy

Cited by 2 publications

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PEM fuel cells &#x2014; The basic characteristics

PEM fuel cells &#x2014; The basic characteristics

Hydrogen production for solar energy storage

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PEM fuel cells — The basic characteristics

PEM fuel cells — The basic characteristics