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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Electrical energy

Electrical energy surrounds us wherever we walk and stand – at work, at home and, thanks to modern technologies, on the move. The following article explains what electrical energy actually is, presents the formula for calculating electrical energy and shows why electrical energy is so important.

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Emergency generators

Emergency power generators are used to generate electrical energy and differ in terms of their drive and mode of operation. In the following article, we explain which emergency power generators are available and how they work.

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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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Heating value of hydrogen

Hydrogen is a combustible gas which, due to its good properties, can be a source of energy but also a storage medium for solar or wind energy, for example. The following article explains the role played by the calorific and heating value of hydrogen and how they are determined.

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Hydrogen Drives

Hydrogen as a drive for so-called fuel cell cars has some exciting properties. Basically, hydrogen cars are electric vehicles, with the difference that a hydrogen fuel cell including hydrogen tank is installed in the car.

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Hydrogen electrolysis

What is hydrogen electrolysis? As a natural chemical substance, hydrogen can be used to store and convert energy. Hydrogen electrolysis is just one of the processes that can be used to generate hydrogen. In the following, we explain how hydrogen electrolysis works and how efficient the method really is.

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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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Metal hydride storage

Metal hydrides are one of several ways to store hydrogen. How do metal hydride storage systems work? How effective are metal hydride storage systems? This, and for which technologies it plays a role, is explained in the following article.

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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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