Posts Tagged ‘waste heat’

How to Make Electricity From Wasted Energy

Energy efficiency is low hanging fruit in the clean energy movement.  Low-grade waste heat may not have the allure of shiny solar panels or a row of wind turbines, but it presents an opportunity that is too good for Michael Newell, CEO of Ener-G-Rotors to pass up. The company is developing a product that generates electricity from low-grade waste heat.

“We are making electricity from a free fuel and not using a fossil fuel,” Michael Newell said this week in an interview with TriplePundit. “Every kilowatt you are generating from our system is a kilowatt you don’t need from fossil fuels.”

IST Announces Release of Portable “Green Energy Machine”

Yesterday, IST Energy released the world’s first compact, mobile waste-to energy system: the GEM (Green Energy Machine). The slick-looking device converts trash into pellets that are in turn converted into electricity and gas heat. 95 percent of daily consumer waste can be dumped into the machine, including paper, plastic, wood, food, and agricultural materials.

Green Wine? Yes. How?

wine grapesThis morning as I woke up to my clock radio, the one minute Project Green segment came on the Rush Limbaugh leaning KNCO AM. It reported on a recent meeting of California wine growers, all 26 of which are talking preliminary to major efforts to green their operations, product, and packaging.

Somehow this doesn’t surprise me. Vintners are acutely aware of the health of their environment, their plants, and the resulting product. With the refined and particular tastes of many of their consumers, a lackluster wine will lead to lackluster profits. Beyond that though, their customers are, I would venture to guess, more likely to be of the LOHAS mindset, choosing what they consume based on more factors then simply the cheapest available. They want everything they touch to have thought, consciousness, and a lighter impact on the planet factored into them.

How can a wine be green? The grapes themselves can of course be organic, the growing method biodynamic. But what else?

Cooling Data Centers Could Prevent Massive Electrical Waste

Cables running into servers at a data center

It is estimated that the data storage sector consumed about 61 billion kilowatt-hours (kWh) in 2006 (1.5% of total U.S. consumption, or roughly equivalent to the amount consumed by 5.8 million average U.S. households). These numbers are only expected to grow.

The energy used by the nation’s servers and data centers is growing at an unsustainable rate. Not only that, but web servers are notoriously inefficient. For example, computer servers are used at only 6 percent of their capacity on average, while data center facilities operate at roughly 65% to 75% efficiency, meaning that 25% to 35% of all the energy consumed by servers is wasted (converted to heat).

If we are to even consider reducing our energy consumption and carbon footprint, the growing demands generated by our web servers must be near the top of the list of possible improvements. And the Department of Energy agrees.

Harvesting Waste Heat is Hot Business Concept

solarcells.jpg We renewable energy advocates love our silicon solar cells, but they come at a price: the process of making silicon generates massive amounts of heat and is a great, big electricity hog.

“Quartz rocks placed in electric-arc furnaces exude oxygen as superheated gas, leaving molten silicon. Just venting all that heat without setting something afire is a concern.” — Jon Van, Chicago Tribune

Now a company has found a way to make money capturing [...]

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