Lasted edited by Andrew Munsey, updated on June 15, 2016 at 1:05 am.
Free Energy Blog posts from October 1-7, 2014
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Free Energy Blog:2014:October:8-15
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-- SilverThunder 11:47, 8 October 2014 (UTC)
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-- SilverThunder 03:14, 7 October 2014 (UTC)
Relevance: Directory:David Wayne Allan > Directory:David Wayne Allan
In the October 5, 2014 Daily Herald in Utah Valley, just south of the Salt Lake Valley, will be a full-page ad and article about my dad. I wrote the article, and am very pleased with how the page turned out. The Herald did a great job in its layout.
October 5 will be the second day of LDS General Conference, so there are a lot of people from out of town visiting for that.
I realize that we've already done quite a bit of coverage about my Dad's recent accolades here in our news, but I thought you would be interested to know of this development. The local Sanpete Messenger is also working on a story based on what I sent them.
As I'm posting this at last 6 hours before Oct. 5 begins here in Utah, I don't have the Herald link yet, but here is a link to the PDF proof they sent my dad. And here is an image of the page:
-- SilverThunder 00:40, 5 October 2014 (UTC)
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(YouTube October 1, 2014)
-- SilverThunder 22:52, 4 October 2014 (UTC)
Template: 4362 > Directory:Steven Spisak's Self-Looped Motor-Generator
I got this image by email today from Steven Spisak with text: "Almost done".
Yes, I realize we've been hearing this for a couple of years but I do like seeing progress reports. I much prefer the person who tries than the one who complains or makes fun of those who are trying.
That said, I must admit that "almost done" seems incongruent when supposedly many of these systems have already been built by him, according to him. So he should be saying, "almost done with this one" or "with this iteration", etc.
-- SilverThunder 21:57, 4 October 2014 (UTC)
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(YouTube October 3, 2014)
-- SilverThunder 15:00, 3 October 2014 (UTC)
Relevance: Directory:Flight
This is the kind of application I'd love to see, which free energy technologies would make all the more easy. Imagine the kind of recreation that will be possible.
https://www.facebook.com/video.php?v=1133298970047791&fref=nf
There are actually quite a few locations around the world, including here in Utah, where these iFly facilities can be found.
-- SilverThunder 06:36, 3 October 2014 (UTC)
Relevance: Directory:Solar > Directory:Solar Thermal
John Kuhles brought this to our attention.
http://theenergycollective.com/energyatmit/1478671/how-make-perfect-solar-absorber
http://www.kurzweilai.net/mit-researchers-design-perfect-solar-absorber
http://www.siliconrepublic.com/clean-tech/item/38534-near-perfect-solar/
Excerpt:
: New system aims to harness the full spectrum of available solar radiation.
: David L. Chandler | MIT News Office
: The key to creating a material that would be ideal for converting solar energy to heat is tuning the material’s spectrum of absorption just right: It should absorb virtually all wavelengths of light that reach Earth’s surface from the sun — but not much of the rest of the spectrum, since that would increase the energy that is reradiated by the material, and thus lost to the conversion process.
: Now researchers at MIT say they have accomplished the development of a material that comes very close to the “ideal” for solar absorption. The material is a two-dimensional metallic dielectric photonic crystal, and has the additional benefits of absorbing sunlight from a wide range of angles and withstanding extremely high temperatures. Perhaps most importantly, the material can also be made cheaply at large scales.
: The creation of this material is described in a paper published in the journal Advanced Materials, co-authored by MIT postdoc Jeffrey Chou, professors Marin Soljacic, Nicholas Fang, Evelyn Wang, and Sang-Gook Kim, and five others.
: The material works as part of a solar-thermophotovoltaic (STPV) device: The sunlight’s energy is first converted to heat, which then causes the material to glow, emitting light that can, in turn, be converted to an electric current.
: Some members of the team worked on an earlier STPV device that took the form of hollow cavities, explains Chou, of MIT’s Department of Mechanical Engineering, who is the paper’s lead author. “They were empty, there was air inside,” he says. “No one had tried putting a dielectric material inside, so we tried that and saw some interesting properties.”
: When harnessing solar energy, “you want to trap it and keep it there,” Chou says getting just the right spectrum of both absorption and emission is essential to efficient STPV performance.
: Most of the sun’s energy reaches us within a specific band of wavelengths, Chou explains, ranging from the ultraviolet through visible light and into the near-infrared. “It’s a very specific window that you want to absorb in,” he says. “We built this structure, and found that it had a very good absorption spectrum, just what we wanted.”
: In addition, the absorption characteristics can be controlled with great precision: The material is made from a collection of nanocavities, and “you can tune the absorption just by changing the size of the nanocavities,” Chou says.
: Another key characteristic of the new material, Chou says, is that it is well matched to existing manufacturing technology. “This is the first-ever device of this kind that can be fabricated with a method based on current … techniques, which means it’s able to be manufactured on silicon wafer scales,” Chou says — up to 12 inches on a side. Earlier lab demonstrations of similar systems could only produce devices a few centimeters on a side with expensive metal substrates, so were not suitable for scaling up to commercial production, he says.
: In order to take maximum advantage of systems that concentrate sunlight using mirrors, the material must be capable of surviving unscathed under very high temperatures, Chou says. The new material has already demonstrated that it can endure a temperature of 1,000 degrees Celsius (1,832 degrees Fahrenheit) for a period of 24 hours without severe degradation.
: And since the new material can absorb sunlight efficiently from a wide range of angles, Chou says, “we don’t really need solar trackers” — which would add greatly to the complexity and expense of a solar power system.
: “This is the first device that is able to do all these things at the same time,” Chou says. “It has all these ideal properties.”
: While the team has demonstrated working devices using a formulation that includes a relatively expensive metal, ruthenium, “we’re very flexible about materials,” Chou says. “In theory, you could use any metal that can survive these high temperatures.”
: “This work shows the potential of both photonic engineering and materials science to advance solar energy harvesting,” says Paul Braun, a professor of materials science and engineering at the University of Illinois at Urbana-Champaign, who was not involved in this research. “In this paper, the authors demonstrated, in a system designed to withstand high temperatures, the engineering of the optical properties of a potential solar thermophotovoltaic absorber to match the sun’s spectrum. Of course much work remains to realize a practical solar cell, however, the work here is one of the most important steps in that process.”
-- SilverThunder 18:25, 2 October 2014 (UTC)
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(YouTube October 1, 2014)
-- SilverThunder 18:11, 2 October 2014 (UTC)
posted yesterday
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-- SilverThunder 18:11, 2 October 2014 (UTC)
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