Showing posts with label green. Show all posts
Showing posts with label green. Show all posts

Tuesday, February 10, 2009

The continuing adventure of LED lights

I'm hijacking a thread someone else had going here:

LED streetlights that can be dimmed, flashed in emergencies and controlled from a central location or via a cellphone. Yeah, I miss San Francisco.

The article is here.

Tuesday, February 3, 2009

The Cheapening: Power Consumption

Will we get off fossil fuels? Not quickly, but we may be able to avoid the worst of peak oil but continuing to improve the energy efficiency of all of our tech... and a big, big portion of our electricity goes to computers...

FTA: "Roughly speaking, we predict there could be a 1,000-time reduction in power consumption with electronic computers built in this new way," said Wolkow, a physicist at the University of Alberta.

But wait, there's more...

FTA: "And they could be something like 1,000 times smaller in size. So it's reaching the very limit as far as anyone could imagine of how small things could get."

What kind of sorcery is this?!?

FTA: 'Scientists at Edmonton's National Institute for Nanotechnology have made a significant breakthrough that could help pave the way for new generations of smaller, more energy-efficient computers.

The team, led by Robert Wolkow, has invented the world's smallest quantum dots, atom-sized devices capable of controlling electrons, using a fraction of the power of current computer technology.'

A computer one one thousandth the present size of our computers is wonderful but its the reduction in power consumption that thrills me. Think of how many computers there are in offices and homes all over the world. Obviously they wouldn't be changed over night, but with each new computer sold (once the tech because ubiquitous)that massive power need would be chipped away. Meanwhile, those of us who dream of living off the grid won't have to make such gut wrenching sacrifices, or shell out nearly as much, to go solar.

What's starting to form, what I'm starting to see emerge as the picture of our future is self sufficient energy creation. A solar panel on every roof, LED's in every light socket, a small, super energy efficient computer... if our power needs are shrinking and our capacity to generate power (through solar and wind)are increasing we can start to see a point when large scale power production becomes a thing of the past...

...of course this means job loses. Coal mining, drilling for natural gas, power stations, managing the grid, laying the cable... all of these things will go the way of the 8-track and, soon, the record store.

Its going to be a weird and, potentially, rocky transition. As our power needs shrink you can expect the price of kilowatt hours to spike, this will of course accelerate the change. This in turn could prompt power companies to drop their prices but their method of power creation may not be efficient enough to accommodate the new lower prices- they will fail. Their only option is to buy up patents on personal power generation tech and I think they're already too late.

If lights account for roughly 20% of total power usage (at least in the UK), how much would a thousand fold reduction in the power needs of computers effect our total energy demands? And what other technologies will benefit from this tech breakthrough?

Friday, January 30, 2009

Why can't more science be so clearly inspired by cartoons?

FTA: C-Questor of Weybridge, Surrey, has developed a technique to drop and plant hundreds of tree seedlings from a helicopter, greatly increasing the speed with which forests can be replanted, and reducing costs.

I'm all for it. I also sort like the idea of using this tech in combination with military efforts. 'Yeah you used to have city there, but you know what, effe it, now it's a new growth forest. Peace, suckas!'

Glibness aside, this is extremely cool.

Bright Ideas and a Case for Economic Optimism.


Fact: Robots are going to take our jobs. This is true and unavoidable. However while this is happening the cost of stuff is going to plummet and our standard of living is going to improve. As long as we have a plan for the transition everything should be better than fine...

...in the short term though, this trend, already present, is going to continue and accelerate. What am I talking about? Light bulbs. LED light bulbs.
FTA: Cambridge University based Centre for Gallium Nitride has developed a new way of making GaN which could produce LEDs for a tenth of current prices.

What's this mean for us? Light bulbs that could last, on average, for sixty years. That's 60. And cost only a couple bucks more than the old fashion incandescent bulbs. Lights that use even less electricity than CFL's, don't need to warm up, can be put on dimmers and contain no mercury. The article sights the UK statistics, not sure what it'd translate out to here in the states, but basically it reduces the percentage of all electricity taken up by lighting (approximately 20% of the total electricity generated)by 75%!!

That astounding reduction translates out to savings to the consumer and less strain on our power grids. It also makes energy self sufficient homes more attainable.

So yeah, a better light bulb... kind of a big deal.