By Gavin Hudson •
October 22, 2008
Danish company AC Sun recently made news with the “invention” a new solar-powered air conditioning system.The new systems are pollution-free, low-noise, and use only 10% of the energy of conventional systems. The only problem is they’ve already been invented, several times over.
Lars Stigel, director of Østjysk Innovation, an investor in AC Sun, spoke with enthusiasm about AC Sun’s design. “It is a groundbreaking technology in relation to renewable energy and energy savings,” he says.
By Max Lindberg •
January 29, 2008
Lettuce and biodiesel too, that’s the plan of Glen Kertz, CEO of Valcent Products of El Paso, TX. Kertz, who has worked in the greenhouse business for nearly two decades, believes the time has come to localize and simplify food production, and he says his Vertigro system will do just that. I spoke with Glen while he was attending an Orchid growers convention in Miami FL. We talked about his High Density [...]
Global warming concerns, government policies, and money-saving efficiency benefits have spurred clean energy systems to spring up all over the world. But a giant wind farm in the middle-of-nowhere North Dakota doesn’t do much good if there aren’t transmission lines to connect the power with the more populated areas that need it.
Europeans are facing similar distribution and reliability issues with their burgeoning renewable energy growth, and some see a continent-wide grid as
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By Amy Stodghill •
June 4, 2007
There are a lot of small, easy things you can do to get the most out of your AC and lighten the energy load for savings in your energy bill.
Don't touch that thermostat
The magic number is 78 degrees. In most climates this is a comfortable temperature setting. Each degree higher than that will save you 6 to 8 percent in cooling costs. You can also set it a couple degrees higher
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