Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

HomeScience ReportsReports and NewsPower and Electrical Engineering

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.

Page anfang | 1 | 2 | 3 | 4 | 5 | ende

A storage battery for the entire world

The lithium-ion batteries currently available for e-mobility are being optimized primarily to increase power density. However, the requirements are different for batteries for stationary energy storage in rural, decentralized electrification. They should be inexpensive, consist of readily available materials, be easy to recycle, have a robust cell chemistry and not be complex in its overall operation. In order to combine these contrasts, the “Electrochemical Energy Systems” junior research group at the Department of Microsystems Engineering (IMTEK) at the University of Freiburg and Hahn-Schickard is working on a new storage concept.

The researchers led by Dr. Matthias Breitwieser and Dr. Severin Vierrath are combining this concept with a scalable and intelligent battery system. The...

04.06.2020 | nachricht Read more

These flexible feet help robots walk faster

Roboticists at the University of California San Diego have developed flexible feet that can help robots walk up to 40 percent faster on uneven terrain such as pebbles and wood chips. The work has applications for search-and-rescue missions as well as space exploration.

"Robots need to be able to walk fast and efficiently on natural, uneven terrain so they can go everywhere humans can go, but maybe shouldn't," said Emily...

03.06.2020 | nachricht Read more

Perfect optics through light scattering

Innovative technologies are the key to tackling some of society’s key challenges – and many of these technologies have an optical system at their core. Examples include semiconductor lithography systems designed to create ever-smaller and more energy-efficient microchips. In the realm of optics even the tiniest imperfections can lead to scattered light, which causes a reduction in contrast and a lower light yield. Today’s optical systems therefore rely on optimized design and comprehensive inspection of the complete surface of optical components. To achieve this, the Fraunhofer IOF is developing light scattering measurement techniques that can detect unwanted scattered light.

The surface quality of an optical surface is the key to achieving the required level of imaging quality. No surface is completely free of imperfections. Even...

02.06.2020 | nachricht Read more

DC smart grids for production halls

Most production plants today are still powered by alternating current. In the long term, however, research teams from the Fraunhofer Institutes for Manufacturing Engineering and Automation IPA and Integrated Systems and Device Technology IISB would like to see industrial manufacturing shift to operating with direct current. In the collaborative research project DC-INDUSTRIE 2, these teams have joined forces with more than 30 partners to develop new power supply systems for industry. The idea is to link all of a factory’s electrical systems to an intelligent DC grid (Direct Current) so as to make electrical supply more energy-efficient, stable and flexible.

Ever since the end of the 19th century, alternating current has been the standard means of power transmission and distribution. In Germany, for example, AC...

02.06.2020 | nachricht Read more

Smart windows that self-illuminate on rainy days

Smart windows that automatically change colors depending on the intensity of sunlight are gaining attention as they can reduce energy bills by blocking off sun's visible rays during summer. But what about windows that change colors depending on the humidity outside during the monsoon season or on hot days of summer?

Recently, a Korean research team has developed the source technology for smart windows that change colors according to the amount of moisture, without needing...

29.05.2020 | nachricht Read more

Skoltech scientists get a sneak peek of a key process in battery 'life'

Researchers from the Skoltech Center for Energy Science and Technology (CEST) visualized the formation of a solid electrolyte interphase on battery-grade carbonaceous electrode materials using in situ atomic force microscopy (AFM). This will help researchers design and build batteries with higher performance and durability.

A solid electrolyte interphase (SEI) is a thin layer of electrolyte reduction products formed on the surface of a lithium-ion battery anode during several...

28.05.2020 | nachricht Read more

Electric pulses precisely shape 3D-printed metal parts

Professor Dirk Bähre and his research team at Saarland University have developed a non-contact method of transforming metal parts fabricated by a 3D printer into high-precision technical components for specialist applications. The novel method enables them to process parts made from strong, lightweight metals to produce precision-finished components with complex geometries and dimensional tolerances of a few thousandths of a millimetre. The team of manufacturing technologists combine metal 3D printing and electrochemical machining (ECM).

Complex technical systems like the engines that power cars, planes or rockets are made from a large number of highly specialized metal components. To ensure...

28.05.2020 | nachricht Read more

A spreadable interlayer could make solid state batteries more stable

Solid state batteries are of great interest to the electric vehicle industry. Scientists at Chalmers University of Technology, Sweden, and Xi'an Jiaotong University, China now present a new way of taking this promising concept closer to large-scale application. An interlayer, made of a spreadable, 'butter-like' material helps improve the current density tenfold, while also increasing performance and safety.

"This interlayer makes the battery cell significantly more stable, and therefore able to withstand much higher current density. What is also important is that...

19.05.2020 | nachricht Read more

A new, highly sensitive chemical sensor uses protein nanowires

UMass Amherst team introduces high-performing 'green' electronic sensor

Writing in the journal NanoResearch, a team at the University of Massachusetts Amherst reports this week that they have developed bioelectronic ammonia gas...

14.05.2020 | nachricht Read more

On the road to non-toxic and stable perovskite solar cells

Among the new materials for solar cells, the halide perovskites are considered particularly promising. Within a few years, the efficiency of such perovskite solar cells raised from a few percents to over 25 %. Unfortunately, the best perovskite solar cells contain toxic lead, which poses a hazard to the environment. However, it is surprisingly challenging to replace the lead with less toxic elements. One of the best alternatives is tin.

Halogenide perovskites with tin instead of lead should show excellent optical properties, but in practice, their efficiencies are mediocre and decrease...

12.05.2020 | nachricht Read more
Page anfang | 1 | 2 | 3 | 4 | 5 | ende

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Electron cryo-microscopy: Using inexpensive technology to produce high-resolution images

Biochemists at Martin Luther University Halle-Wittenberg (MLU) have used a standard electron cryo-microscope to achieve surprisingly good images that are on par with those taken by far more sophisticated equipment. They have succeeded in determining the structure of ferritin almost at the atomic level. Their results were published in the journal "PLOS ONE".

Electron cryo-microscopy has become increasingly important in recent years, especially in shedding light on protein structures. The developers of the new...

Im Focus: The spin state story: Observation of the quantum spin liquid state in novel material

New insight into the spin behavior in an exotic state of matter puts us closer to next-generation spintronic devices

Aside from the deep understanding of the natural world that quantum physics theory offers, scientists worldwide are working tirelessly to bring forth a...

Im Focus: Excitation of robust materials

Kiel physics team observed extremely fast electronic changes in real time in a special material class

In physics, they are currently the subject of intensive research; in electronics, they could enable completely new functions. So-called topological materials...

Im Focus: Electrons in the fast lane

Solar cells based on perovskite compounds could soon make electricity generation from sunlight even more efficient and cheaper. The laboratory efficiency of these perovskite solar cells already exceeds that of the well-known silicon solar cells. An international team led by Stefan Weber from the Max Planck Institute for Polymer Research (MPI-P) in Mainz has found microscopic structures in perovskite crystals that can guide the charge transport in the solar cell. Clever alignment of these "electron highways" could make perovskite solar cells even more powerful.

Solar cells convert sunlight into electricity. During this process, the electrons of the material inside the cell absorb the energy of the light....

Im Focus: The lightest electromagnetic shielding material in the world

Empa researchers have succeeded in applying aerogels to microelectronics: Aerogels based on cellulose nanofibers can effectively shield electromagnetic radiation over a wide frequency range – and they are unrivalled in terms of weight.

Electric motors and electronic devices generate electromagnetic fields that sometimes have to be shielded in order not to affect neighboring electronic...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

Contact Tracing Apps against COVID-19: German National Academy Leopoldina hosts international virtual panel discussion

07.07.2020 | Event News

International conference QuApps shows status quo of quantum technology

02.07.2020 | Event News

Dresden Nexus Conference 2020: Same Time, Virtual Format, Registration Opened

19.05.2020 | Event News

 
Latest News

Shedding light on the brown color of algae

14.07.2020 | Life Sciences

Color barcode becomes ISO standard

14.07.2020 | Information Technology

New substance library to accelerate the search for active compounds

14.07.2020 | Life Sciences

VideoLinks
Science & Research
Overview of more VideoLinks >>>