No Tech Reader #7

“Are we fixing the right things? Are we breaking the wrong ones? Is it necessary to start from scratch every time?”

Wind Power System Made from Plastic Buckets

A wind power system made from plastic buckets is seen on boats at a floating village in Hanoi, Vietnam June 29, 2016. REUTERS/Kham

A wind power system made from plastic buckets is seen on boats at a floating village in Hanoi, Vietnam June 29, 2016. REUTERS/Kham

“Vietnamese families living in slums along the Red River in Hanoi are using red plastic buckets and old printers to help light homes, cook meals and slash electricity costs by as much as a third.

The recycled goods form the blades and motors of electrical generators that power old motorcycle batteries to illuminate lamps with a brightness equivalent to a 45-Watt light bulb.

Though the output generated is small, it makes a significant difference for families previously denied power because they lived too far from a power station or had to ration supply because of the expense.”

More pictures and information at Reuters: Plastic buckets, broken printers shine light on Hanoi’s poor. Via Playground Magazine.

See all our low-tech windmill posts.

Adapted Tools for Organic Farming

horse plough

L’Atelier Paysan is a French-speaking collective of small-scale farmers, employees and agricultural development organisations who design open source farm tools.

Based on the principle that farmers are themselves innovators, they have been collaboratively developing methods and practices to reclaim farming skills and achieve self-sufficiency in relation to the tools and machinery used in organic farming.

They have an English language website, which includes about a dozen tool descriptions with technical drawings. All tools can be appropriated and modified by farmers. [Read more…]

Lamella Roofs

lamella roof

A lamella roof, also known as the “Zollinger roof” (after Friedrich Zollinger), is a vaulted roof made up of simple, single prefabricated standard segments (mostly in timber) as a way to span large spaces. The individual pieces are joined together with bolts and/or plates to form a rhomboid pattern. Wooden sheathing covers the structure on the outside. The lamella roof was patented in 1910 and became popular between the World Wars, especially in Germany when metal for construction was in short supply. Some of these structures are now almost 100 years old and many of them remain in very good condition.

Read more: Lamella Roof, Open Source Ecology.

Radical Technology Revisited

radical technology revisited

Is Progress an illusion? Are catastrophic changes inevitable? Is Technology the problem or the solution? What are the practical alternatives? Such questions were asked 40 years ago in the pioneering book Radical Technology [PDF, 31.5 MB].

The conference Radical Technology Revisited will ask them again with even more urgency. The main event is in Bristol (UK) on Saturday September 3rd. Other events will take place on Friday 2nd and Sunday 4th, and will include presentations, workshops, debates, demonstrations, exhibitions, and a party.

Thanks to Leah Temper.

Battery Powered Rail Vehicle Claims New Efficiency Record

battery powered rail vehicle

Students from Dalarna University, Sweden, have won a competition for creating efficient rail-based transport, claiming a world record in the process. Team Eximus 1 was competing in Delsbo Electric, where teams must design and build a battery-operated railway vehicle that uses as little energy as possible. Delsbo Electric is open to college and university students. It was inspired by the Shell Eco-marathon, with the concept translated for rail-based rather than road-based travel.

Vehicles must carry between one and six passengers weighing a minimum average of 50 kg (110 lb) each. Vehicle efficiency is measured on a per person basis, meaning vehicles carrying six passengers are not at a disadvantage. The Eximus 1 carries five passengers. The vehicle is estimated to weigh about 100 kg (220 lb) and to measure about 5,500-mm (217-in) long by 1,500-mm (59-in) wide. It was powered by four 12 V, 45 Wh batteries linked together in parallel and a 500 W motor.

The team’s final efficiency score was 0.84 Wh/person-km (watt-hours for every kilometer traveled by each passenger). Delsbo Electric claims that is a new world record. “We have done research and not found any information about somebody or something traveling as efficient rail-based in the world. In fact, it seems like Eximus 1 achieved a lower energy consumption per person than the current Shell Eco Marathon record.”

See & read more at Gizmag: Silver machine rolls down the track to new efficiency record. Vehicles from other participants can be found here. Thanks to Frank Van Gieson.

Related:

The Wave of the Future

personal effects laurie lipton 2016

“Personal Effects (after Hokusai) 2016″, 5footx7foot8”, charcoal & pencil on paper. Click to enlarge. By Laurie Lipton.

Zero Electricity Air Cooler

Eco-Cooler airco without electricity

Over 70% of Bangladesh’s population live in corrugated tin huts across the countryside. During the long summer months, temperatures reach up to 45° Celsius, making these huts unbearable to live in.

To address the issue, Grey Dhaka teamed up with volunteers from Grameen Intel Social Business Ltd to create the Eco-Cooler – a zero electricity air cooler, which uses re-purposed plastic bottles cut in half and put into a grid, in accordance to available window sizes.

Based on wind direction and airflow pressure, the Eco-Cooler has succeeded in decreasing the temperature in tin huts by up to 5° Celsius. After initial tests, blueprints of the Eco-Cooler were put up online for everyone to download for free.

Thanks to Adriana Parra.

No Tech Reader #6

web 0.0

Smart Technology is a Solution Looking for a Problem

iabR Hans tak

Picture by Hans Tak, International Architecture Biennale Rotterdam 2016

Technologies like driverless cars and smart heating systems could end up making cities dysfunctional according to Maarten Hajer, chief curator of the International Architecture Biennale Rotterdam 2016. Speaking at an opening event for the biennale, Hajer called for architects and designers to stop treating the advent of smart technologies as inevitable, and to question whether they will solve any problems at all.

“People with lots of media force pretend to know exactly what the future will look like, as if there is no choice,” he said. “I’m of course thinking about self-driving vehicles inevitably coming our way.” Discussions about the future of cities are at risk of being “mesmerised” by technology, he added. “We think about big data coming towards us, 3D printing demoting us, or the implication of robots in the sphere of health, as if they are inevitabilities. My call is for us to think about what we want from those technological advances.”

“I have nothing against good technology, it’s wonderful, but you always want social problems to be the priority. If it doesn’t help us get CO2 down, if it doesn’t help us make cities more socially inclusive, if it doesn’t help us make meaningful work, I’m not interested in smart technology. Sometimes I think: “if smart technology is the solution, then what was the problem again?”

Read the full interview at Dezeen. Thanks to Anne-Marie Pronk.