Showing 27 posts tagged energy
BBC News: How do you turn rubbish into energy? Find out how the largest energy recovery facility in Oslo, Norway processes waste and converts it into approximately half of the city’s energy. The integrated waste management system has been so successful that Oslo has had to import trash from other countries to keep up with energy demands.
Simply burning trash is known for putting toxins into the air, but according to recent reports, Waste-to-Energy (WTE) technologies have made advances in “almost completely eliminating" dangerous emissions. WTE supporters also encourage more recycling and minimization of waste as first steps in the waste management heirarchy pyramid.
Also, there’s a huge claw.
Watch more videos about trash in the archives.
Directed by Tina Keeper and presented by the National Film Board of Canada, How Do They Recycle Steel? (1999) has everything: conveyor belts, crackling sounds, massive machines in a massive factory, sparks, smoke, fire, molten metal, more sparks…
Melting down and recycling existing steel products is a more efficient and sustainable process than mining iron ore to make virgin steel. From the EPA:
Recovering steel not only saves money, but also dramatically reduces energy consumption, compared to making steel from virgin materials. In turn, this reduces the amount of greenhouse gases released in to the air during processing and manufacturing steel from virgin ore.
Iron and steel are easily recycled and are the most recycled materials in the world.
In 2002, Brazilian engineer Alfredo Moser invented a simple way to bring the sun’s light indoors: fill a clear plastic 2 liter bottle with water and two capfuls of bleach, then make a hole in the roof and secure it with a waterproof sealant.
The result: 40 to 60 watts of free, natural light.
How does it work? The bleach keeps the water from turning green, and the water refracts sunlight. To see this innovative but simple invention in action, watch the the ecoideasnet video above (with captions on). Chilean Miguel Marchand helps to install the bottle lights, or Moser Lamps, in the home of a family that lives in the Andes.
Around 1.6 billion people — 25% of the Earth’s population — live without electricity, but with this simple idea, they can enjoy sustainable light in their home for free. Moser Lamps are becoming popular solutions in the Philippines, India, Bangladesh, Tanzania, Argentina, Fiji, and other countries, and give an incredibly useful second life to plastic bottles.
h/t BBC News.
From NOVA PBS, Solar Power:
The amount of solar energy that strike the surface of the Earth in one hour is more than enough to supply every person on the planet with electricity for an entire year. However, there are limits that prevent us from being able to fully take advantage of this energy.
For now, at least!
Watch more videos about the sun in the archives.