Aluminum boat trailer parts za,plywood jon boat floor hatch,boat rentals branson missouri 2014,catamaran for sale punta gorda fl zip - PDF Review

Published 17.12.2013 | Author : admin | Category : Wooden Skiff Plans

The New York Times has an article on Alcoa's interest in making reflective solar troughs for the solar thermal power industry (Aluminium Maker Eyes Solar Industry), leveraging their experience in aircraft wing box design and replacing the reflective glass in parabolic troughs with aluminium.
Alcoa claim their all-aluminum parabolic trough (currently being tested at the National Renewable Energy Laboratory in Colorado) will cut the price of a solar field "by 20 percent due to lower installation costs". Parabolic troughs focus sunlight on liquid-filled receivers suspended over the mirrors to create steam that drives an electricity-generating turbine. Aluminum manufacturing, however, is the nation’s most energy-intensive industry, according to the Energy Department.
The Alcoa executives said the company planned to have its solar trough in commercial production within two to three years. Alcoa Australia's WA alumina refinery expansion remains stalled because of an inability to obtain cheap long term gas supplies as a result of LNG exports limiting supply into the local market (the Varanus Island incident a couple of years hasn't helped matters either).
Well, Aluminium is used in aircraft to save weight, but there's not the same imperative on the ground.
Obviously the reflector itself would have to be something shiny, scratch-resistant and corrosion-resistant (Stainless Steel? About the only problem that I can see is that it doesn't sound quite rocket-sciencey enough when the pollies come around asking questions on their ribbon-cutting tours.
I think about half the overall energy is in the infrared, whereas UV is only a percent or two. The solar thermal units that use Sterling engines, forget the name, use silver for the greater reflectivity. Alcoa will face competition from start-ups like SkyFuel, which has developed a lighter-weight parabolic trough that uses a reflective film instead of glass mirrors. It's like you say these guys still have no idea what is coming and want everything fancy fancy.
And a thin sheet (really thin) of aluminium buffed to a high sheen would reflect pretty well. The parabolic trough is simple enough but does anyone have technical details on the structure and workings of the collector tube? One would think that you'd want its surface to absorb as much of the solar radiation as possible, conduct that to the working fluid running inside - while minimizing the heat-loss before it reaches the heat-exchanger. For example is the tube just a straight hollow tube or is there any internal stucture to it like a radiator would have to lenghten the path of the fluid? I don't think Alcoa are planning on reengineering anything other than the reflector itself.
There's also an abundance of surplus Industrial Kitchen Stainless Steel sheeting out there, for those who want to make such things from recycled and abandoned materials.
Liability and the hassle when the cops show up over someone who has a proper title to that car that is a cube.
I imagine his point is that aluminium recycling uses much less energy than creating the metal in the first place - but as you say, it probably still consumes a substantial amount of energy in the recycling process. If this technology is to scale to be a big-time renewable, then as far as aluminum markets are concerned, recycled or from mined sources - it has to come from somewhere. The amount of heat needed to melt Al has got to be at least an order of magnitude smaller than "smelting" it, where the very strong Aluminum Oxyegen bond has to be broken. In any case solar thermal plants have a decent EROI, so any embedded energy in their construction will be quickly replaced.
Make energy expensive and you'll see how fast those industries based on melting deploy heat exchangers and reduce their use by a factor of 10. If nothing else recycling of aluminum at least eliminates the energy needed to mine the aluminum in the first place.
If you cut up those 250 million cans and make them into refectors, at 200cm squared per can, that yields 5 kilometers squared per hour. That's about 382 million cans an hour, or about 30 cans per American (including men, women, infants, and children) per day. Since we're dealing here in "proprietary" information, we'll never know the precise number for sure, but it seems to me that 30 cans per day is so over the top that it should have rung some alarm bells - but about plausibility, not about, say, running out of aluminum or being buried in it or anything of that sort. Just consider the dumps a bank account, and you won't have to spend so much time bummed out, life is short.
And in this society, the so called renewables (in fact NOT RENEWABLE SYSTEMS able to capture part of the flow of renewable energy sources) are very much underpinned in the fossil fueled society.
EROEI of a CSP plant can not be concluded just by a biased, interested study of an expert working for the company installing it.
And related question: Did they stop teaching simple aritmethics in English speaking countries?


You may or may not be aware that I have for some time been wrangling with a number of people here at TOD who, as a matter of theology almost, insist on believing that things like wind turbines and solar power systems have barely marginal EROEIs and are therefore to be dismissed out of hand and not taken seriously. As I have done here a number of times and in a number of ways, some very simple back-of-the-envelope calculations, even using highly unfavorable assumptions, can quite easily and convincingly show that such a supposition leads to absurd conclusions, such as the requirement of the equivalent of thousands of tons of coal to maintain a single wind turbine over its operating life. The whole EROEI concept the way it is tossed around on TOD is sloppy and borderline useless.
As with the discussion of aluminum cans above, beliefs trump math and science every time, especially since the broken education system ensurers that the average person is barely aware that math and science exist. Don't know where you have been but precious few don't keep score in games, you ain't seen nothing till you dealt with an angry parent seeing their budding superstar benched. But the basic institutional role and function of the schools, and why they're supported, is to provide an ideological service: there's a real selection for obedience and conformity.
Sadly, reading that entire excerpt backs PaulS more than you might like to think, but Zinn has some good points. If someone says 'they believe in what Jesus teaches' does that mean the Jesus of love or the Jesus that wants a fig outside of of Jig season and invokes a curse or tell you to sell some clothing to buy a sword.
Depending on why you are talking to saying 'I follow the teaching of Jesus' will mean different things to different groups.
My point on the Zinn excerpts was more about his 'black hole' of competition and the implications on discipline when dealing with masses of pre through post pubescent humans. A 20% saving in part of the Solar Field (the mirrors), may represent a cost reduction, if finally achieved, as mentioned by TNYT of about a 7-9% of the total plant. Second, with respect to storage, if you look the molten salt tanks, similar to bull rings and go to the technical specs, you will notice that the biggest storage system, at least in Spain, has an energy buffer for about 8 hours. Of course, economies of scale do not apply very much when talking about common hardware, that is what mainly composes a CSP plant. It only looks like it doesn't matter because the world is awash in the materials all being made via "economy of scale". It seems that you do not grasp well that raw materials depend very much on price of fossil fuels that make them available and that "economies of scale" worked while prices of essential fossil fuels were absolutely cheap and stable for years, which is not the case now and the main reason we are talking about alternative energies. High Speed Welding - Ryder RacksTruck Ladder Racks & Custom Boat T Tops - Wilmington, NCContact Us Today! By far best trailer wheels to have on a boat trailer no matter how many u dunk it in saltwater they still hold there shine!!! Anglers looking for the perfect versatile fishing boat are going to love the Lund 1625 Fury XL. Parabolic trough technology has been in modern use in solar power plants since the early 1980s, but Alcoa executives said they saw an opportunity to refine the technology and get a foothold in the rapidly expanding renewable energy market.
However Alcoa has managed to obtain long term supply contracts for its refinery in Victoria - but using brown coal fired power - the dirtiest power source of all.
Those shorter wavelengths have more energy, and CSP can use light across the whole spectrum. I see aluminium as the best candidate, but you'll need to insulate it from the steel, so you'll need some hydrocarbons.
Those are normaly made of stainless steel, externaly coated with a nikel oxide known as "black nikel" (you can search it on google, there are lots of companies doing it), and only as tick as needed to support itself and the liquid inside it. As an example of how energetic the Aluminum Oxygen reaction is Thermite was a popular world war two demolition tool. I don't have any data but I suspect it is much less energy intense to recycle than it is to mine. Then again, no one seems any longer to have any notion whatsoever about the plausibility of number they're bandying about. I care very much about hidden energy costs of designing, creating, installing and maintaining the so called renewable energies, which are largely underpinnned in a fossil fueled society. Are still heavily reliant on fossil fuels to be feasible; have a horrible assymetric interdenpendence on fossil fuels.
If someone is dead set on believing something, all evidence to the contrary, there is little one can do.
IMO that's part of the blowback from when the hippies took over and decreed that from then on it would be politically incorrect and even punishable to attempt to educate anyone in anything substantial - or to keep score in games - lest the stupid and shiftless be "unfairly" exposed for who and what they are. When I was forty-one I dusted off my discarded BS and used it for all it was good for--going back to school. I deleted most of my original reply to PaulS where I pretty well insulted just about everyone I could on one side or the other of the term in two lines, just to point out how ridiculous the 'hippy' term was. I had thought they were shooting for 50% reduction of the cost of the reflectors and an overall cost reduction of twenty percent.


Bullshit is trying to explain what can you do as individual with your bare hands, instead of going to markets to see if prices of steel, cooper, aluminium, or concrete decrease, at world level, when fossil fuel energy prices skyrocket. Kerns said Alcoa had not performed a life-cycle analysis of the total energy costs and benefits of deploying such parabolic troughs, but noted that the company planned to use recycled materials to make the solar collectors. If aluminum loses only 10% at the infrared end of the spectrum, and is much better at the UV end, wouldn't aluminum be just as good?
From those, (stainless) steel is preferable, since it will have a biger useful life, and thus save energy on the long run. Even if you don't wat to use natural gas, those won't be very problematic, since they are needed on very small amounts.
Toughts are normaly kept inside glasses, with the interior air drained, to lower losses from conduction. Thermite is a mixture of powdered aluminum and rust.The reaction reduces the iron and transfers the Oxyegen to the aluminum. So within about three weeks we would have enough reflector to build a solar thermal plant large enough to fully supply the United States power needs. So many in fact that it's undoubtedly yet another bog-standard example of the vast scaremongering exaggeration that always seems to enter discussions of this sort. I actually copied and pasted right from his site and Chris actually said 100,000 cans every 30 seconds, not per second.
How long will an aluminum reflector last and how does that longevity compare other mirror materials? Spain is today the second country in the world, with about 4 to 6 GW of requested CSP plants and about 700 MW under construction, since several years, in different phases, but unfortunatelly only 110 MW were connected to the grid (fed-in) in January 2010, probably due to problems in energy storage and others, even Spain has plenty of R+D in this area and has made quite a good progress. Fifty percent of 47%(the field) would yield a bit over 20%, so that interpretation might be consistent. Besides, with a couple of cloudy days, the gas turbines will have to enter to complement (Spain has an upper limit of about 15-17 percent in alternative usage, if the CSP plant want to be considered within the special regime and therefore, subject to premium tariffs. With a carrying capacity of 1900 pounds, this Wheel will successfully outfit your Single or Tandem axle Trailer.
Some deluxe telescope makers have a coating which is signiicantly better than aluminum (IIRC 98-99%), but it is so expensive it is only used for small secondary mirrors, not the large primary mirror. You'd like to use some alcaline material where the steel meets the soil, to avoid corrosion.
That black nikel is a material with very hight absorvity of visible radiation, and very low absorvity of infra-red, reducing loses from emission; even then, those are the bigest losses of the plant and thus, they are the parameter that normaly defines the temperature (it varies from one plant to the other).
So much energy is released that the resulting mixture of molten iron and aluminum oxide easily melts through steel. In any case solar thermal plant prices I don't think have benefitted from economy of scale (of plant and industry) yet, so it is premature to use prices of existing small scale plants as prices for hypothetitical large scale deployment. I do not see a great advantage and of course, I do not believe that huge amounts of electricity will never reach a molten salt storage solution. If your specifically looking for an aluminum trailer wheel in the 14 inch size and 5 Bolt pattern, this is wheel for you, this rim is also referred to as a 7 Star. I think aluminzed Mylar is supposed to be a really good reflector (something like 98-99%), but it is pretty flimsy. I think they deserve funding with the intent of finding out how low the price can be driven in the future. Prices can be changed much more by speculating with these raw materials in stock exchange markets. Because of the possibility of thermal storage with solar thermal if it can be made cost competitive with PV, it would be a valuable component of the grid. To complete the appearance of your new Aluminum trailer Rim, maybe consider adding a Stainless Steel Center cap 13,14, and 15 in Aluminum Wheels. A larger but less expensive mirror that costs less could produce the same system output for less money. Volume (economies of scale to which economicists are so much accustomed that they believe they are an universal law) will not help very much in this case. The problem of electricity storage is the scale needed and the reduction of the overall efficiency.



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