Energy

Sun is the Greenest

- Adam Clare 1 Comment

Computers burn a lot of energy on our planet, in fact it’s 4-5% of total world power consumption. Well, Sun Microsystems knows this and is doing something about it. I wonder how they stack up to sustainable linux, black google, but, they are better than windows and Apple.

For him, this is just good business. “Energy responsibility is about to become a society-wide business imperative,” he says. “All my projects have measurable business benefit. You might say the ‘eco’ in my title is for economics as well as ecology.”

“We’re not only part of the solution but also part of the problem,” he confesses. What he means is that computers are egregious energy hogs. Data centers alone, Sun calculates, account for 2-3 percent of total world energy use, with all IT making up more like 4-5 percent. At big companies, 20 percent of total energy costs can typically be accounted for by information technology.

Solar Goodness

- Adam Clare

picture-1.png Solar power is always seeing new advancements. It can be something fun like building your own solar powered iPod charger or finding that solar dyes can be used for creating electricity. This month Georgia Tech has developed a solar panel that uses nano-towers to create a more efficient solar cell.

The difference is in the design. Traditional solar panels are often flat and bulky. The new design features an array of nano-towers – like microscopic blades of grass – that add surface area and trap more sunlight.

Plants are Quantum Powered

- Adam Clare

I don’t really understand all of this quantum power stuff – it just seems so neat! Apparently plants use some quantum level process for photosynthesis which is what plants need to do in order to live. I have no idea how this will impact anything, but it’s just such a groovy discovery.

In a paper entitled, Evidence for wavelike energy transfer through quantum coherence in photosynthetic systems, he and his collaborators report the detection of “quantum beating” signals, coherent electronic oscillations in both donor and acceptor molecules, generated by light-induced energy excitations, like the ripples formed when stones are tossed into a pond.

Power Your Own Electronics

- Adam Clare

The power of walking proves itself to be a great way to get energy yet again!

This most recent addition to the foot powered future uses nanogenerators to convert kinetic energy into cell phone energy.

Researchers have demonstrated a prototype nanometer-scale generator that produces continuous direct-current electricity by harvesting mechanical energy from such environmental sources as ultrasonic waves, mechanical vibration or blood flow.

Kiwis Know Solar Power

- Adam Clare 1 Comment

Some New Zealand researchers have created a dye for solar power generation that mimics photosynthesis in plants. The dye is cheaper to use than standard photovoltaic solar panels.

Cam says:

Dr Wayne Campbell and researchers from the Nanomaterials Research Centre at Massey University in New Zealand have developed a range of coloured dyes for use in dye-sensitized solar cells. Synthetic dyes solar cells that can be used to generate electricity at one tenth of the cost of current silicon-based solar panels.

The synthetic dyes are made from simple organic compounds closely related to those found in nature. The green dye Dr Campbell is synthetic chlorophyll derived from the light-harvesting pigment plants use for photosynthesis. Other dyes being tested in the cells are based on hemoglobin, the compound that give blood its color and blue derived from blueberries. Apparently, dark-colored berries outperform most other plant species when it comes to spectral absorption of sunlight.

From the linked article:

Solar cell technology developed by the University’s Nanomaterials Research Centre will enable New Zealanders to generate electricity from sunlight at a 10th of the cost of current silicon-based photo-electric solar cells.
…
Dr Campbell says that unlike the silicon-based solar cells currently on the market, the 10x10cm green demonstration cells generate enough electricity to run a small fan in low-light conditions – making them ideal for cloudy climates. The dyes can also be incorporated into tinted windows that trap to generate electricity.

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