Battery Killers: Grid-Interactive Water Heaters

May 10, 2015 by kris de decker Filed Under: Batteries, Energy storage, Random, Water

grid interactive water heatersGrid-interactive water heaters (GIWHs) add bidirectional control to electric resistance water heaters, allowing a utility or third-party aggregator to rapidly toggle them off and on. This functionality turns a fleet of water heaters into a flexible energy-storage medium, capable of increasing and decreasing the load on the grid on a second-by-second basis.

GIWHs are currently the least expensive form of energy storage available. Utilities can use fleets of grid-enabled water heaters for load shifting, demand response, arbitrage, ancillary services, or to respond to unexpected grid-stabilization events. Traditional dissemination of new water heater technology has been a painstakingly slow process, but water heater rental programs may greatly accelerate this process.

Read more: Battery Killers: How Water Heaters Have Evolved into Grid-Scale Energy-Storage Devices, David Podorson.

Related: How sustainable is stored sunlight?

What Digital Does to Our Brains

April 30, 2015 by kris de decker Filed Under: Access to information, Brains, Information age, Internet, Random
Luis Quiles

Illustration by Luis Quiles

“It turns out that digital devices and software are finely tuned to train us to pay attention to them, no matter what else we should be doing. The mechanism, borne out by recent neuroscience studies, is something like this:

  • New information creates a rush of dopamine to the brain, a neurotransmitter that makes you feel good.
  • The promise of new information compels your brain to seek out that dopamine rush.

With fMRIs, you can see the brain’s pleasure centres light up with activity when new emails arrive.

So, every new email you get gives you a little flood of dopamine. Every little flood of dopamine reinforces your brain’s memory that checking email gives a flood of dopamine. And our brains are programmed to seek out things that will give us little floods of dopamine. Further, these patterns of behaviour start creating neural pathways, so that they become unconscious habits: Work on something important, brain itch, check email, dopamine, refresh, dopamine, check Twitter, dopamine, back to work. Over and over, and each time the habit becomes more ingrained in the actual structures of our brains.”

Quoted from: Why Can’t We Read Anymore? The illustration was made by Luis Quiles — check out his work. Previously: Why the brain prefers to read on paper.

The Groundfridge

April 29, 2015 by kris de decker Filed Under: Food storage

groundfridge

The Groundfridge is an innovative take on the traditional root cellar. Via Treehugger.

Mechanical 3D Printer

April 22, 2015 by kris de decker Filed Under: 3D printers, Craftsmanship, DIY, Random

mechanical 3D printer“3D printing allows me to create products more swiftly and more efficiently than ever. But these products don’t feel mine. They are merely a product of this new technology. I love technology but how can I reclaim ownership of my work? Perhaps by building the machine that produces the work. Perhaps by physically powering the machine, which I built, that produces the work.”

Instead of building a traditional 3D printer, Daniël de Bruin decided to harken back to a past when pantographs and mills ruled the shop floor by making a device which doesn’t require software or electricity to work its magic. His 3D printer is driven by a 7.5 pound weight. “The weight allows me to be connected with the process because there’s no external force involved like electricity; it’s still me that’s making the print,” says de Bruin. “By physically building and powering the machine, the products that come out of it are the result of all the energy that has gone into it.”

For those who complain about the speed of FDM 3D printers, de Bruin says his machine is actually faster. It all comes down to a nozzle diameter of approximately 2mm – rather than the 0.35mm – 0.4mm which is the standard for most 3D printers. While there may be a slight loss in quality with his process, he says his old-school machine can print objects using clay material, pasta, starch bio plastics, and pretty much any material that can fit through the extrusion nozzle, which doesn’t require heat.

See & read more at Daniël de Bruin and 3Dprinterworld. Seen at the Milan Furniture Fair. Related: Human powered 3D-printer.

Can We Reboot Civilisation Without Fossil Fuels?

April 22, 2015 by kris de decker Filed Under: Energy

“Would a society starting over on a planet stripped of its fossil fuel deposits have the chance to progress through its own Industrial Revolution? Or to phrase it another way, what might have happened if, for whatever reason, the Earth had never acquired its extensive underground deposits of coal and oil in the first place? Would our progress necessarily have halted in the 18th century, in a pre-industrial state?”

Read more: Out of the ashes, aeon magazine. Related: The bright future of solar thermal factories, Firewood in the fuel tank: woodgas vehicles, Medieval smokestacks: fossil fuels in pre-industrial times.

Let’s Grow Some Furniture: Botanical Manufacturing

April 22, 2015 by kris de decker Filed Under: Random, Trees, Wood, Woodworking

Botanical Manufacturing

“An ingenious British designer has come up with the ultimate environmentally-friendly way to create stunning household furniture – by letting Mother Nature do all the hard work. Gavin Munro grows young trees into specially-designed plastic moulds, pruning and guiding the branches into shape before grafting them together to form ultra-tough joints. Using this method he’s already created several prototype pieces and has a field in Derbyshire where he’s currently tending a crop of 400 tables, chairs and lampshades which he hopes to harvest next year.”

botanical manufacturing 4“You start by training and pruning young tree branches as they grow over specially made formers. At certain points we then graft them together so that the object grows in to one solid piece – I’m interested in the way this is like a kind of organic 3D printing that uses air, soil and sunshine as its source material. After it’s grown into the shape we want, we continue to care and nurture the tree as it thickens and matures before harvesting it in the Winter and then letting it season and dry.”

“Each of the pieces have grown from one tree, planted specifically for that reason, its limbs guided in an exact shape and later grafted together to produce the unique pieces of furniture, which he hopes are the pioneers of a new method of sustainable, efficient and ecologically aware production.”

See & Read more:

Via Unconsumption.