Jul 19, 2016 |
In the environmental debate, green sources of energy and energy conservation measures are oft-discussed topics. But between those endpoints, there are environmental benefits to be reaped as well. The future electrical grid will offer more flexibility, reduce transmission losses, and enable bidirectional energy flows and distributed generation.Read More
Jul 12, 2016 |
During the summer of 2016 articles from our growing archive will be republished. This one was first published in September 2012. Nuclear power is both a promising and problematic energy source. On the one hand, nuclear power continuously generates large amounts of energy without consuming fuels that contribute to global warming. On the other hand, there are concerns about nuclear accidents and the storage of spent radioactive material. The Royal Swedish Academy of Engineering Sciences, or IVA, and the Royal Swedish Academy of Sciences have found a number of future technologies that may improve nuclear power. One of them is to use thorium as fuel.Read More
Jul 5, 2016 |
During the summer of 2016 a couple of older articles will be republished. This article was first published in 2014. Ship transport is energy efficient, but it is also a significant source of emissions because of the globalized world huge transportation needs. In large measure, these vessels are powered with high-sulphur fossil fuels. New technologies have made sail propulsion possibly competitive - at least as a component of a highly automated hybrid system.Read More
Jun 28, 2016 |
When a river meets the sea, the salinity of the seawater is diffused in the mix of waters. The process releases energy, as much as if the same volume of water fell from a 250 meter high hydroelectric dam. With osmotic methods, the energy can be gathered to generate electricity. All that is needed is slightly more efficient membranes.Read More
May 17, 2016 |
Solar power is becoming more competitive. Worldwide deployment is growing rapidly. In the future, orbiting satellites might be able to collect solar power with higher efficiency and without intermittency. The power could be transmitted wirelessly to a receiver anywhere on Earth, by means of microwave or laser. The Sun is flooding us with more renewable energy than we can...Read More
Apr 26, 2016 |
Better technologies to handle and sort mixed waste streams promise to unlock previously unavailable resources. Next-generation biofuels will use waste as feedstock. Methods to gather plastic waste from the oceans, dismantle refuse mountains and harvest energy are being developed and improved.Read More
Mar 15, 2016 |
Ocean Thermal Energy Conversion, OTEC, is an emerging technology which generates electricity from the difference in temperature between tropical surface seawater and cooler deep water. Not only is it a renewable with baseload capability – but the power plants will also be able to produce fresh water as a by-product. The deep water used in the process is rich...Read More
Mar 9, 2016 |
Asteroid mining: the gathering of resources from space. It used to be the subject of science fiction – but in the wake of a new bill granting property rights to miners, several prospective space mining companies are already preparing and launching spacecraft. In the future, this might lead to more available resources and less mining on Earth – and...Read More
Feb 9, 2016 |
Very fast high speed rail suffers from severe air resistance. The hyperloop concept can be likened to high speed rail sent by pneumatic tube transport. A promising combination of relatively low cost, high speed and limited environmental impact makes the hyperloop a possible future fifth mode of transportation. Pilot programs are being planned – and Sweden is one of...Read More
Nov 17, 2015 |
Replacing fossil fuels with hydrogen would eliminate the combustion emissions. Compared to current battery electric vehicles, hydrogen fuel cell electric vehicles have longer driving range and can be refueled in less time. A hydrogen economy would require new infrastructure to handle storage and distribution, and an abundance of electricity generated from renewable sources. But in many countries, ambitions are...Read More
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