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What to do with electricity produced by wind and sun, which is not used immediately during times of reduced power consumption? In order to integrate renewable energies fluctuating in a sustainable energy system, it is necessary to find ways of storing excess energy produced. It is already possible to store electricity in the form of water (hydro Pumped Storage-turbine [1]), again transformed into electricity through turbines during peak periods. However, these storage capacities are very limited.
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Thus advance Teresa Ribera, Secretary of State for Climate Change, provisional data on emissions of greenhouse gases in the first quarter of 2010 in Spain. At the informal meeting held this afternoon with the media, Bank has also made a positive assessment of progress in international negotiations on climate change after the summit in Copenhagen (Denmark).
Although there are still different positions when assessing what was agreed in Copenhagen in terms of reducing CO2 emissions, Secretary of State for Climate Change, Ministry of Environment, Rural and Marine Affairs (MARM) values “positively” the first steps after the UN meeting which brought together over 120 heads of government last December.
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Many projects are emerging in Ireland on the development of green energy. Currently, Ireland depends heavily on energy imports, consisting mainly of oil and gas. The share of renewables in production is still low but it increases significantly, especially wind power.
Among the proposed projects, “Spirit of Ireland plans to install wind farms on the west coast of the island. This project is original because it intends to combine wind power with hydroelectric dams.
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Singaporeans reject daily 7 200 tonnes of waste, the equivalent weight of 970 elephants. All this waste is buried on the island of Pulau Semakau and pace things are going, the increase in waste per capita will be such that the island will be overrun by 30 to 40 years. The Director of Environmental Technology Division at the National Environment Agency (PBN) said that the technology involved to recover the waste in place in Singapore is currently dating 30 or 40 years and is obsolete. We urgently need to invest in new technologies, more efficient and less costly.
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The Federal Energy Regulatory Commission (FERC) has issued a report [1] presenting his latest findings on its National National Action Plan on Demand Response, a program to develop and align the management of electricity demand (demand response in English) the federal level.
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Researchers at the Autonomous University of Madrid have managed to create a little nanomentros tape capable of conducting electricity from molecules. The findings appear in the latest issue of the journal Nature Nanotchnology.
In a joint effort between research groups led by Julio Gomez-Herrero and Felix Zamora, The Departments of Physics Condensed Matter and Inorganic Chemistry Universidad Autonoma de Madrid, Spanish investigators have managed to grow nanobelts of a special type of metal-organic compound on an insulating substrate.
The compound they have used is called MMX and is characterized as a “one-dimensional chain where Dimetal units (MM) Are joined together through an iodine atom (X) Through a coordination bond (generally weaker than typical covalent bond). These tapes are good conductors of electricity (considering their molecular origin) and have excellent prospects for structuring surfaces.
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The Japanese company Zena System has developed a new technology to generate electricity using wind power. The principle is very simple: turn the focus to a wind generator at ground level. The electricity produced is stored in batteries flow [1].
The tower has a hexagonal base. Its diagonal is 25 m, height of fifty meters. Its surface consists of doors that open only inwards: when the wind blows, it rushes into the tower but can not show that at the base of the building to which it is channeled.
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Researchers at the University of Shizuoka have created a new fuel made from waste plastics and agricultural products, the thermal characteristics similar to those of coal. The team, led by Professor Takeshi Sako, expects to reach an industrial manufacturing process within three years.
The principle is relatively simple, stirring for 30 minutes, the plastic waste and those derived from biomass in the water at high pressure (20 atmospheres) and high temperature (200 ° C), the researchers obtain fuel grain d a diameter of 1 to 5 mm. They then compress to obtain granules. 1 t of waste biomass and 200 kg of plastics used to manufacture 400 kg of granules.
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The Area of Fluid Dynamics, National Institute of Aerospace Technology (INTA) is involved in the project ‘Minieolica’ National Plan, coordinated by CIEMAT and the foundation Robotiker. The project objective is to develop useful technology for harnessing wind power in “almost” anywhere.
The project will develop five innovative MINIEOLICA small wind power: four horizontal axis (with different
technological solutions for operation), mainly connected to the low voltage, and a vertical shaft designs and implementing regulations in housing integration.
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A research team has designed a windmill to produce fresh water from seawater. The finding could be useful in small villages in isolated dry areas of the coast.
A traditional
windmill which drives a pump: that is the concept that combines a windmill and a reverse osmosis system developed by the Delft University of Technology, located in the Netherlands. The model develops a high pressure pump, 60 bars, which pushes water through a reverse osmosis membrane, which in turn produces freshwater from the sea directly.
The combination of windmills and
desalination plants and is commercially viable. So the windmills produce
electricity from the wind, then it is stored and used to handle the high pressure pump for reverse osmosis plant. The storage of electricity is an expensive process and energy lost during conversion. On the ground of Delft UT, the high pressure pump is controlled directly by wind power. It is also necessary to note that water storage is, after all, much cheaper than electricity.
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A traditional windmill which drives a pump: that is the concept that combines a windmill and a reverse osmosis system developed by the Delft University of Technology, located in the Netherlands. The model develops a high pressure pump, 60 bars, which pushes water through a reverse osmosis membrane, which in turn produces freshwater from the sea directly.