Glossary

Double benefit through combined heat and power generation

Fuel cells play a pivotal role in energy supply. They are the key technology for converting a fuel, whether hydrogen or methanol, back into electricity. In this way, energy is made transportable on the one hand and available on a decentralized basis on the other. The whole thing works powerfully, efficiently and in an environmentally friendly manner.

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Fuel cell efficiency

Successful implementation of the energy transition requires more than just electricity from renewable sources. Sustainable power generators, smart grids and flexible electricity storage systems are equally important for success. Efficiency is an important factor in the interaction of all components. But how can a statement be made about what is efficient and what is not? And how can the efficiency of individual power generation technologies be measured and quantified? The efficiency factor provides information on this. What do you mean by efficiency? The efficiency factor provides information on this.

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Hydrogen storage simply explained

Hydrogen (H2) is the most abundant chemical element in the universe. That’s great, because hydrogen is the fuel of choice for successfully finalizing the energy transition. As a fuel, it offers the promise of a low-emission and sustainable power supply – from production to application.

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Oxygen as oxidizing agent

Oxidation, reduction. We’ve heard this before, but it’s been a long time. What is it all about again? What is an oxidant? And what does all this have to do with fuel cell technology? A lot, because neither an EFOY Jupiter hydrogen fuel cell nor an EFOY direct methanol fuel cell can work without an oxidizer. To start with, let’s explain the difference: oxidation is a chemical reaction involving oxygen. Reduction is a deoxygenation reaction.

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Primary energy is not secondary

The best energy is that which is not consumed in the first place. Logical, all critics of common bon mots may now object. But how is that supposed to work in a globalized world and an increasingly digital economy? Industry needs energy, cars need fuel and the home needs to be heated. You may be reading this text right now on the screen of your PC. As you can see, reducing energy consumption is one thing.

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Secondary energy has many facets

If there is primary energy, there must also be secondary energy. The prefix alone suggests this. The following text will deal with secondary energy. What is secondary energy? It is best to start directly with a definition of secondary energy. Secondary energy includes the types of energy that do not come directly from nature. So, in that sense, it is converted primary energy. Primary energy includes lignite, petroleum, and natural gas, but also solar energy, wind power, hydroelectric power, geothermal power, and tidal energy.

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