Biofuels have been around as long as cars have.
A biofuel is a fuel that contains energy from geologically recent carbon fixation. These fuels are produced from living organisms.
Generating Electricity from Wing Waves.
Wind turbines, like windmills, are mounted on a tower to capture the most energy. At 100 feet (30 meters) or more aboveground, they can take advantage of the faster and less turbulent wind.
Producing electricity from solar energy.
Solar energy is a free, inexhaustible resource, yet harnessing it is a relatively new idea. The ability to use solar power for heat was the first discovery.
Turbines catch the wind's energy with their propeller-like blades.
A blade acts much like an airplane wing. When the wind blows, a pocket of low-pressure air forms on the downwind side of the blade.
Solar energy may have had great potential
Solar technology advanced to roughly its present design in 1908 when William J. Bailey of the Carnegie Steel Company invented a collector with an insulated box and copper coils.
We have been harnessing the wind's energy for hundreds of years.
For utility-scale sources of wind energy, a large number of wind turbines are usually built close together to form awind plant.
Biofuels are produced from living organisms.
In order to be considered a biofuel the fuel must contain over 80 percent renewable materials.
Geothermal energy is the heat from the Earth.
Resources of geothermal energy range from the shallow ground to hot water and hot rock found a few miles beneath the Earth's surface, and down even deeper to the extremely high temperatures of molten rock called magma.
Geothermal heat pumps can tap into this resource to heat and cool buildings.
A geothermal heat pump system consists of a heat pump, an air delivery system (ductwork), and a heat exchanger-a system of pipes buried in the shallow ground near the building.
In the future, civilization will be forced to research and develop alternative energy sources.
Possession of surplus energy is, of course, a requisite for any kind of civilization, for if man possesses merely the energy of his own muscles, he must expend all his strength - mental and physical - to obtain the bare necessities of life.
Showing posts with label thioethers. Show all posts
Showing posts with label thioethers. Show all posts
Thursday, February 5, 2015
On Offshore Oil And The Hawaii Science And Technology Council
Saturday, July 5, 2014
When It Comes To Health Wind Power Blows Away The Alternative
BY DAVID SUZUKI
Helix energy is increasingly when considered a doable and well-groomed power source. Mass countries, by way of the U.S., Germany, Spain, Pottery, and India, are putting policies dressed in be given to oblige the development of their wind energy industries. In Canada, the deal in of wind energy when harnessed for use in our homes, offices, and factories has responsible swiftly manager the previous few duration, led by Ontario with its Natural scientist Kick Act.Dispel, a backlash has been growing in many spaces where wind power is when residential. In Ontario, one of the main criticisms of wind development has been its impact on possible fitness, generally for instance of the healthy that wind turbines rule. Yet, the peer-reviewed geometric research indicates that the sound from windmills, which on a national scale torrent dressed in three categories (distinguishable sound, low frequency, and infrasound), has inadequate to no impact on possible fitness.
This is intensely respectable if windmills are built far tolerable revealed from residences. For example, the clear move backward in Ontario is 550 metres. At this rest, the distinguishable sound from windmills has been origin to be underside 40 intensity, which is around the consequence of sound you'd expose in greatest extent bedrooms and living accommodation. Studies from the Speculative of Massachusetts similarly origin that raze to the ground if the sound were distinguishable, persecution would be near to the ground.
Critics carry in addition precisely to low frequency sound and infrasound as the source of fitness impacts from wind turbines. These are sounds that are either skin-tight to eavesdrop or imprecise to humans. Dispel, Ontario's More Health check Supervisor of Aptness did a assessment of the geometric journalism and origin no right that low frequency sound from wind turbines causes flawed fitness effects.
Weigh up from Sweden and the Netherlands may shed accurate light on the disagreement that windmills are face, nonetheless the rareness of right for possible fitness impacts. At or solely frozen 40 intensity, 73 per cent of land might listen to the sound and six per cent were angry. But populate who did not impossible to tell apart windmills or origin them gruesome were disdainful true to listen to the sound and were disdainful true to be angry by it.
Even if we call for always transpire protester about new and growing research on any issue, the right seems clear that wind turbines built with well-balanced setbacks do not give somebody the job of a fitness pest. And wind becomes a disdainful well-groomed energy source considering you notion the fitness impacts of the main energy alternative, burning coal and other fossil fuels.
The Canadian Health check Business all in the mind that in 2008 Canada's air murkiness was steady for 21,000 inconvenient deaths, 92,000 emergency range visits, and 620,000 visits to a doctor's nest. Next to if you view truly at the fitness impacts of Ontario coal-fired power plants, the statistics are downright and marvelous.
In the same way as next whether Canada desires to finish the development of its wind resources or share out wind power in the way that Ontario's Natural scientist Kick Act proposes, we call for way of thinking the finish of Maine's Core for Sarcoma Constrain. As soon as dismissing the be keen on of a moratorium on wind development due to its fitness impacts, the Center's Dr. Dora Ann Mills accomplished, "If expound is any right for a moratorium, it is greatest extent true on other use of fossil fuels, unambiguous their known and widespread effects on the fitness of our fatherland."
As for the impacts on wildlife, that's out of the ordinary pretense. But greatest extent geometric research shows that newer technologies and appropriate locating can overcome greatest extent of the pressure to nature and bats. One different exploration in addition noted that "the itemize of nature killed in wind developments is significantly degrade next of kin to all in the mind almanac bird fatal outcome put from a variety of other anthropogenic factors by way of vehicles, buildings and windows, power consultation military protection, native tongue towers, toxic chemicals by way of pesticides, and feral and disciplined cats."
It's never undemanding to expose energy technologies that incentive resolve any person, but with the world face ever-growing negative repercussion of burning fossil fuels, we must keep steady our options. In produce an effect so, wind power comes out like lightning. If we secure that responsibility is industrious to use technologies with near to the ground untrained impact and to focus turbines in areas where effects on humans and flora and fauna are in addition near to the ground, expound is no good state of affairs to oppose wind power.
Written with gifts from David Suzuki Manufacture harden redraft policy authority Dell Marshall.
Representation credit: Randy Harrison via Flickr
source: http://www.davidsuzuki.org/blogs/science-matters/2011/07/when-it-comes-to-health-wind-power-blows-away-the-alternative/
Sunday, May 25, 2014
World Renewable Energy Forum Steven Chu And Santiago Seage
"The free market will not solve the problem, energy prices will be volatile, we need something like a carbon tax now, government needs to spend more on R">
Dr. Steven Chu is an American physicist and U.S. Secretary of Energy who was born and educated in the U.S. While at Bell Labs he won a Nobel Prize in Physics in 1997. He is on leave from the University of California, Berkeley. Previously, he was at Stanford University, where he advocated renewable and nuclear energy as necessary to combat global warming. At Berkeley, his research speculated that a global "glucose economy" could replace fossil fuels, for he had already shifted to biological physics while at Stanford.
"If I heard correctly, Chu is the first U.S. Secretary of Energy to ever appear at this major annual solar gathering (41st meeting"). He said, the climate is changing, but science cannot explain the plateau from 1930 to 1980, and during the past decade. Our sea level is actually rising faster and there have been more major storms than calculated. In geologic time, our warmed Earth resulted in sea level rise exceeding 60 feet. It is appearing that the wet spots are getting wetter and dry spots dryer.
The good news is that we can do something about this, and the cost factors are decreasing. Wind is close to coal at 7 cents/kWh, but the best solar remains 14 cents/kWh and higher. To quote:
"THE SUNSHOT VISION STUDY REPORTS THAT THE LEVELIZED COST OF ENERGY (LCOE) FOR A UTILITY-SCALE CONCENTRATING SOLAR POWER PLANT IN THE SOUTHWESTERN UNITED STATES WAS IN THE 0.12-0.18/KWH RANGE WITH A 30% INVESTMENT TAX CREDIT IN 2010."
Note that this price includes the 30% federal incentive and is for lower cost utility scale projects. Thus, if you live in a less sunny region, for a residential system, without tax incentives, the real cost of producing electricity could far exceed 20 cents/kW and could well approach 50 cents/kWh.
"Chu said that much of Europe sells electricity at or higher** than Hawaii (33 cents/kWh--he said it was 26 cents/kWh and we use diesel, both incorrect, so he needs to upgrade his act"), so solar is already competitive at these sites. The Sunshot Initiative will aid in reducing the cost of solar so that by 2020 much of the developed world should be able to justify solar electricity. Life cycle costs, however, argue that installation can begin now ("he did not say this, but that makes sense to me"). Here is a nice link to a solar glossary.
"Conservation has worked, for refrigerators today use only 25% the electricity compared to older ones. Air conditioners are also rapidly becoming more efficient. The cost of these appliances are, surprisingly, also dropping some. If you got a pool, you might want to convert it into a koi pond, if you don't need to aerate it (he did not way this, I did, looking at the above").
Chu indicated there is no reason why we can't have our energy: cleaner and maybe even cheaper. Solutions are rapidly advancing. Yes, we need federal subsidies today, and might want to continue it for a decade and more, but someday, the renewables will be competitive. He got a standing ovation.
*An interesting point about natural gas made by Dr. Chu was that it is not like oil, having a long established world-wide shipment system, which does not exist today for natural gas. Thus, the price can be as low as 2.50/thousand cubic feet or million BTU ("they are about same") where the gas is drawn, but up to 20/MBTU in parts of Europe.
**But "WIKIPEDIA" indicates for late 201 electricity costs of 40 cents/kW in Denmark and 36 cents/kW in Germany.
My OTEC dinner ("where I had a glass of Chardonnay and a small bag of potato chips") last night became lunch today. Luis Vega ("University of Hawaii)" took Desikan Bharathan ("National Renewable Energy Laboratory") and me to a Peruvian restaurant, Los Cabos II, the top rated of its type in Denver. While not up to the excellence of Astrid Y Gaston and Malabar in Lima, Luis really nevertheless enjoyed his lunch. With the buffet, which Luis said was very authentic, we had a Peruvian beer. I also added a Pisco sour. Bharathan ("left") and Vega ("right") are two of the three foremost OTEC researchers in the world:
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