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Energy policies relating to alternative energy

Current energy policies are still based heavily on natural resources. Meanwhile, the trend is increasingly toward alternative resources, such as wind power.

It's only a matter of time before natural resources, such as petroleum, are depleted. Petroleum, a fossil-based energy source deposited across millions of years, is used to produce fuel or electricity. Taking stock of the fact that 260 billion barrels (one barrel = 159 liters) of oil were extracted over the last 11 years, it's evident that the world's petroleum resources will be depleted one day. New developments in solar or wind power are aimed at providing alternative energy sources that will enable us to maintain our current standard of living. Petroleum is also required by the chemical industry to manufacture special plastics.

The advantages and disadvantages of alternative energy sources

When discussing the subject of petroleum and alternative energy, one must bear the advantages and disadvantages in mind. Our resources are running short . Because we cannot count on petroleum for the future, there will come a time when everyone will rely on the efficiency of wind power and other alternative energy sources . Unlike petroleum, wind power can be managed to ensure that it constantly renews itself. Wind power meanwhile makes it possible to have enough resources to supply entire cities. Petroleum has the additional disadvantage of harming the environment through CO2 emissions. This has resulted in increasing demand for resources such as wind power. Wind power can be classified into different categories. A class 4 wind turbine can meanwhile provide resources in a much more efficient manner than petroleum resources for instance. In addition, unlike petroleum, resources such as wind power offer a decentralized energy supply. This means that in contrast to petroleum, the utilization of wind power does not require a large power plant. Instead, it makes "transporting" the energy easier and faster. Decentralized wind power entails a massive infrastructure change. Resources such as wind power certainly bring disadvantages when it comes to the environment, although they pale in comparison to the disasters that can result from petroleum. The utilization of our resources determines how we continue to maintain our standard of living. This makes it important to continue public discourse on the issues of wind power and petroleum.

Resource shortage

It's only a matter of time before there is no petroleum left. For this reason, from a resource standpoint we should already be moving toward heavy reliance on wind power instead of petroleum. After all, from a pure scientific point of view, new petroleum resources won't be available for millions of years. Unlike petroleum, wind power is a resource that will never run dry. In Germany alone, wind power is serving as a popular alternative resource to petroleum. The demand for wind power will increase in line with the consumption of petroleum. For this reason, it is imperative that we gradually move away from petroleum and make more use of wind power or other alternative energy resources. The environmental pollution caused by petroleum is reason enough for an environmentally-conscious society to use solar or wind power. In contrast to petroleum, wind power is significantly better for the environment and offers a unique resource balance.

Power and Electrical Engineering

This topic covers issues related to energy generation, conversion, transportation and consumption and how the industry is addressing the challenge of energy efficiency in general.

innovations-report provides in-depth and informative reports and articles on subjects ranging from wind energy, fuel cell technology, solar energy, geothermal energy, petroleum, gas, nuclear engineering, alternative energy and energy efficiency to fusion, hydrogen and superconductor technologies.

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26.1 % record efficiency for p-type crystalline Si solar cells

The Institute for Solar Energy Research Hameln (ISFH) and Leibniz Universität Hannover have developed a crystalline silicon solar cell with an independently confirmed efficiency of (26.10 +/- 0.31 %) under one sun. This is a world record for p-type Si material, which currently covers ~90% of the world photovoltaic market. The record cell uses a passivating electron-selective n+ type polysilicon on oxide (POLO) junction and a hole-selective p+ type POLO junction. It is the high selectivity of theses junctions that allow these high efficiencies. As an important step towards industrialization, laser ablation is used for the contact opening process.

The Institute for Solar Energy Research Hamelin (ISFH) and the Leibniz Universität Hannover demonstrated the fabrication of a crystalline silicon solar cell on...

07.02.2018 | nachricht Read more

Planetary boundaries broken down to individual countries

No country currently meets its citizens’ basic needs at a globally sustainable level of resource use. This is the result of a new research paper co-authored by the Mercator Research Institute on Global Commons and climate Change (MCC). The study, entitled “A good life for all within the planetary boundaries”, was led by the University of Leeds and has been published in Nature Sustainability. It is the first to quantify the sustainability of national resource use associated with meeting basic human needs for 151 countries.

“Almost everything we do, from having dinner to surfing the Internet, uses resources in some way, but the connections between resource use and human well-being...

06.02.2018 | nachricht Read more

Do you know what IR emitters have to do with your heater?

Gas turbines need air for combustion, which must be free of dust and other particles. Therefore it always need to be pre-filtered.

Moist cold intake air in the winter months can easily lead to icing of the filter. The filters then allow only minimal airflow and the gas turbine must be...

02.02.2018 | nachricht Read more

New UC Riverside research advances spintronics technology

Discoveries will help realize the promise of faster, energy-efficient spintronic computers and ultra-high-capacity data storage

Engineers at the University of California, Riverside, have reported advances in so-called "spintronic" devices that will help lead to a new technology for...

02.02.2018 | nachricht Read more

Greenhouse gas emissions in rapeseed cultivation need to be assessed realistically for mitigation

Global default values overestimate nitrous oxide emissions in rapeseed cultivation

A network of eight partners, coordinated by the Thünen Institute of Climate-Smart Agriculture (Thünen-Institut für Agrarklimaschutz, hereafter TI),...

01.02.2018 | nachricht Read more

Penn engineering research gives optical switches the 'contrast' of electronic transistors

Current computer systems represent bits of information, the 1's and 0's of binary code, with electricity. Circuit elements, such as transistors, operate on these electric signals, producing outputs that are dependent on their inputs.

As fast and powerful as computers have become, Ritesh Agarwal, professor in the Department of Materials Science and Engineering in the University of...

01.02.2018 | nachricht Read more

New method could open path to hydrogen economy

Technique efficiently generates hydrogen from water

Washington State University researchers have found a way to more efficiently generate hydrogen from water - an important key to making clean energy more viable.

01.02.2018 | nachricht Read more

Fraunhofer ISE Starts Operation of New Hydrogen Feed-In Plant

In its role as a flexible energy carrier, hydrogen is an important element of the energy transformation. It facilitates the transfer of renewable energy between the different sectors of, for example, mobility, industrial raw materials, heat or gas. The Fraunhofer Institute for Solar Energy ISE is working to further develop the key technologies for sector coupling, for example, hydrogen generation by PEM electrolysis. Together with industry and energy sector, they are testing the application of these technologies in the practice. The results shall serve to establish important fundamentals on the use of this central energy carrier of the future.

"In an energy system without fossil fuels, the fluctuations in electricity production from renewables must be balanced out,” says Dr. Christopher Hebling,...

25.01.2018 | nachricht Read more

Adding graphene girders to silicon electrodes could double the life of lithium batteries

New research led by WMG, at the University of Warwick has found an effective approach to replacing graphite in the anodes of lithium-ion batteries using silicon, by reinforcing the anode's structure with graphene girders. This could more than double the life of rechargeable lithium-ion based batteries and also increase the capacity delivered by those batteries.

Graphite has been the default choice of active material for anodes in lithium--ion batteries since their original launch by Sony but researchers and...

24.01.2018 | nachricht Read more

The world's most powerful acoustic tractor beam could pave the way for levitating humans

Acoustic tractor beams use the power of sound to hold particles in mid-air, and unlike magnetic levitation, they can grab most solids or liquids. For the first time University of Bristol engineers have shown it is possible to stably trap objects larger than the wavelength of sound in an acoustic tractor beam. This discovery opens the door to the manipulation of drug capsules or micro-surgical implements within the body. Container-less transportation of delicate larger samples is now also a possibility and could lead to levitating humans.

Researchers previously thought that acoustic tractor beams were fundamentally limited to levitating small objects as all the previous attempts to trap...

22.01.2018 | nachricht Read more
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Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Developing reliable quantum computers

International research team makes important step on the path to solving certification problems

Quantum computers may one day solve algorithmic problems which even the biggest supercomputers today can’t manage. But how do you test a quantum computer to...

Im Focus: In best circles: First integrated circuit from self-assembled polymer

For the first time, a team of researchers at the Max-Planck Institute (MPI) for Polymer Research in Mainz, Germany, has succeeded in making an integrated circuit (IC) from just a monolayer of a semiconducting polymer via a bottom-up, self-assembly approach.

In the self-assembly process, the semiconducting polymer arranges itself into an ordered monolayer in a transistor. The transistors are binary switches used...

Im Focus: Demonstration of a single molecule piezoelectric effect

Breakthrough provides a new concept of the design of molecular motors, sensors and electricity generators at nanoscale

Researchers from the Institute of Organic Chemistry and Biochemistry of the CAS (IOCB Prague), Institute of Physics of the CAS (IP CAS) and Palacký University...

Im Focus: Hybrid optics bring color imaging using ultrathin metalenses into focus

For photographers and scientists, lenses are lifesavers. They reflect and refract light, making possible the imaging systems that drive discovery through the microscope and preserve history through cameras.

But today's glass-based lenses are bulky and resist miniaturization. Next-generation technologies, such as ultrathin cameras or tiny microscopes, require...

Im Focus: Stem cell divisions in the adult brain seen for the first time

Scientists from the University of Zurich have succeeded for the first time in tracking individual stem cells and their neuronal progeny over months within the intact adult brain. This study sheds light on how new neurons are produced throughout life.

The generation of new nerve cells was once thought to taper off at the end of embryonic development. However, recent research has shown that the adult brain...

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