Reposted here for information purposes only (upping the reference links. You are welcome) I posted this to a zombie thread earlier today, only discovering afterwards that the subject of the thread had be subverted in favor of brain ingestion…
…But this subject is near and dear to my heart. So having looked up these references, I felt it to be a true waste not to post them somewhere they might get noticed. Still looking for that place…
“Chemical engineers are now able to take these new chemicals, like nanomaterials, and we’re trying to create the technologies that can meet the global challenge of, say, energy sustainability. We’re taking chemistry, we’re inventing new ways to actually make materials that can’t be made any other way,” he continues.
With support from the National Science Foundation (NSF), that’s what Korgel and his team are doing to create solar cells that are light, flexible, efficient and–often the biggest obstacle–affordable.
“It’s challenging to get high efficiencies of conversion. For example, the basic single junction solar cell is fundamentally limited to an efficiency of 30 percent. So, if you made a perfect solar cell, the highest efficiency would be 30 percent,” explains Korgel at his Austin lab.
Currently, manufacturing cells with anything near that level of efficiency requires high heat, a vacuum and is very expensive. Korgel’s approach, using nanotechnology, is completely different.
“What we’re doing right now in my research group is making nanocrystals. We’re focused on ‘CIGS’–copper, indium, gallium, selenide–and we make small particles of this inorganic material that we can disperse in a solvent, creating an ink or paint,” he says.
America is getting its very first wave power farm! Ocean Power Technologies, a New Jersey-based firm, is currently installing giant buoys off the coast of Reedsport, Oregon. Once all ten buoys are in place, developers hope to use them to harness the energy of wave motion and generate power for hundreds of area homes.
Each buoy will measure about 150 feet tall by 40 feet wide and weigh in at about 200 tons. A float on each craft rises and falls with the rolling of the waves, driving an attached plunger’s up-and-down movement. A hydraulic pump then converts that movement into a spinning motion, which drives an electric generator. The electricity produced by the generator moves from sea to land via submerged cables. Right now, developers are finishing up construction on the first buoy, and it will take about 60 million big ones to finish up all ten. Once the entire system is in place, about 400 homes will derive their power from Oregon’s coastal waters.
“wind power”, electricity from waves, energy from waves, Ocean Power Technologies, Portugal wave farm, Reedsport, wave power, wave power in Oregon
Construction of the first buoy is an encouraging development, but the system still has some challenges to overcome. For one, wave power currently costs about six times that of wind power (although once the technology is optimized it should see comparable prices, especially because waves are more predictable than wind or solar power). Secondly, keeping the buoys in place and free from damages caused by big waves can be tricky. And so far, wave power’s history doesn’t paint the most promising picture: The world’s first commercial wind farm opened in 2008 in Portugal, but power production was suspended due to financial difficulties. Moreover, two years ago, a Canadian-produced wave power device sank off Oregon’s coast.
Still, if engineers can master the art of cost-effective wind power, it would be a huge boon for the renewables field. Waves are both free and predictable, so harnessing them to generate electricity would be great. Other wind farm projects are currently underway in countries like Spain, Scotland, Western Australia and England. If all goes according to plan, Oregon’s wind farm will see completion by 2012.
….my personal favorite…
Now PG&E in California, is planning to take their ability to tap renewable energy to a whole new level: solar power in space.“Solaren says it plans to generate the power using solar panels in earth orbit, then convert it to radio frequency energy for transmission to a receiving station in Fresno County. From there, the energy will be converted to electricity and fed into PG&E’s power grid.” ~ Next100.com
Solaren hopes to begin launching before 2016. The satellites will deploy the solar panels so they dock automatically together in orbit, resulting in an orbital power plant weighing roughly 25 tons if back here on Earth.
The advantages of space solar power include:
* energy that can be harnessed at all times, even at night or when it’s cloudy.
* baseload power delivery that makes efficient electricity possible for meeting customer demand.
* an underlying technology that is mature since it is based on communications satellite technology.
Before all this happens however, PG&E needs approval from the California State Legislature, through the California Public Utilities Commission for this Solaren Space Based Energy Contract. Currently, Solaren is preparing to launch space rockets containing the solar panels and they have been working with United Launch Alliance (a joint venture of Lockheed Martin and The Boeing Company) on such launches.Solaren Corporation, is a start-up company nearly a decade old based in southern California that:
* consists of a number of aerospace engineers.
* has headquarters located in Manhattan Beach and Los Angeles County, California.
* expects to launch four or five heavy-lift rockets containing the solar panels.
A competitor of Solaren is a company called Space Energy formed to harness solar energy from space using similar techniques. Solar energy from space has never been captured commercially, mostly because the cost was always considered too high. Daniel Kammen, professor in energy and resources at the University of California, Berkeley, told the Guardian: “The ground rules are looking kind of promising … it is doable. Whether it is doable at a reasonable cost, we just don’t know.” ~Telegraph.co.uk
Source: Clean Technica (http://s.tt/12uxE)