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 polynesia. Show all posts
Showing posts with label polynesia. Show all posts

Monday, April 23, 2012

Tokelau To Become World First Solar Powered Country

Tokelau To Become World First Solar Powered Country
Image: Bringing in the solar panels has risks

By Jenny Suo, 3 News

Watch the news clip here: http://www.3news.co.nz/Tokelau-to-become-worlds-first-solar-powered-country/tabid/1216/articleID/262649/Default.aspx

Tokelau is on it's way to becoming the world's first fully solar-powered nation.

A New Zealand team has been working on the three tropical atolls that make up Tokelau and they're just about ready to start switching off the diesel generators.

The sun scorches all year round in Tokelau and now that energy will play a key part in running the island nation.
Workers from Kiwi company Powersmart Solar are just a week away from converting the atoll Fakaofo from being diesel powered to solar powered.
"It's been quite a milestone week for us, we now have all the solar panels erected, 1584 solar modules, all the batteries are in place," says mechanical engineer Dean Parchomchuk.

More than 4,000 solar panels on the atolls will provide electricity to the nation's 1,400 people. The $7.5 million project has been funded by the New Zealand Ministry of Foreign Affairs and Trade and it is being welcomed by the Tokelau community.
"It's going to be an amazing change from using fossil fuel," says Tokelau energy minister Foua Toloa. "It avoids expenses, but also bringing them there, it's dangerous and any spill will affect the environment."
More than 2,000 barrels of diesel are used to generate electricity in Tokelau each year costing more than $1 million.
"To date they have relied on diesel fuel for all their needs, and it's had to be imported, and they're reliant on generators which have had a knack for breaking down," says Mr Parchomchuk.
Speaking in New Zealand Powersmart Solar's director says the project will save money in the long run.
"We would expect this system to repay itself in five years, and have a 20 year life before it needs any sort of significant maintenance," says director Mike Bassett.
Workers on Fakaofo will soon move on to install solar panels on the two remaining atolls, Atafu and Nukunon, and all work is expected to be completed by September.