Video Collection

I wanted to explain compound parabolic reflectors to people but there was no suitable software to explain it so I made up this little set up instead. It might be a useful tool for many people.
Brian

Compound parabolic dishes differ from parabolic dishes in that they have an acceptance angle (a margin for error if you like) so they do not have to be exactly pointed at the sun or moved every few minutes. This is a very useful property!
This video shows how i made a mold for making parabolic dishes suitable for up to 3 hours of solar cooking before moving the dish. The mold can be used with whatever sheet material is available to make the dishes.

Brian

Briquette Production at the Grady Grossman School, Cambodia. In January 2008 Sanu Kaji Shrestha of FoST in Nepal trained the local villagers of Chrauk Tiek, Cambodia how to produce biomass briquettes from waste materials such as saw dust, rice husk, rice straw, leaves, coconut husks and scrap paper. Over 40 villagers were trained and a production facility was established. Now 19 workers (17 women) produce 4 tons of "Smart Choice Fuel" per month. A more permanent facility is being built. Sales of this alternative cooking fuel is brisk—selling all the villagers can produce. Net profits from sales go to support education at the Grady Grossman School. This method of sustainable development is the work of Sustainable Schools International. To learn more visit: http://www.SustainableSchoolsInternat...

Nishant Bioenergy, a small business in Chandigarh, has developed the Sanjha Chulha (combined stove) - a large stove for institutional-scale cooking, which uses briquettes made from crop waste as fuel. Each stove can provide meals for up to 650 people, and thirteen stoves are now in use in residential schools in India, with more on order.

Demonstration of making fuel briquettes with a newly designed Peterson Press. This is appropriate technology for developing countries to use agricultural waste for cooking fuel as an alternative to deforestation caused by using wood or charcoal.

The pulser pump is about 20 years old (a river powered pump with no moving parts) and is simple appropriate technology

Brian White
BC
Canada

shows a generalized "mechanical mathematician" for making cob parabolic dishes or for making cob moulds for parabolic reflectors. Hopefully this will be accurate enough to make large moulds for big specalized parabolic dish reflectors.

The 2 bucket dripper tracker is an appropriate tech device for moving solar cookers, solar panels or perhaps even parabolic solar reflectors to follow the sun and maximize the energy trapped by the solar device.

The tracking solar accumulator is an experimental system to make and use a semi automatic tracking solar parabolic reflector to accumulate heat for various uses.
Every part of the experimental unit was made in my backyard from junk and fairly cheap readily available items.
The unit works moderately well and proves the concept.
Simple diy tracking was added soon after the video was taken

An innovative device (made from plastic), that can produce clean drinking water without chemicals or electric power.

This NewsTeam Boulder AED video describes a new process that was used to repave a parking lot at the University of Colorado at Boulder (USA) using recycled glass.

This was initiated in 1999 with $175,000 from ESMAP as a project in Char Montaz, a coastal island in Bangladesh, with technical assistance from Prokaushali Sangsad Ltd (PSL). South Asia Partnership, Bangladesh, an NGO provided initial support in social mobilization and micro-credit. The project provided skill and renewable energy technology training to 32 poor women in Char Montaz and assited them in establishing the Coastal Women's Electrification and Development Microenterprise, which now has become a SME with 117 employees.

Documentary Video Producer/Director Aron Noll traveled to Benin, Africa to produce this short documentary to promote the installation of a water well drilling machine to eliminate waterborne sickness that was killing many people.

The video describes the work of FoST Nepal on biomass briquettes and efficient cooking stoves.

http://video.google.com/videoplay?docid=-8265929164207306024

Philippine ram pump installed in three sites in Northern Afghanistan

enseneda mexico using a montana strain of algae

An algae photobioreactor on the roof of MIT university.

The clear polycarbonate tubes are approx 3 meters high, and 10-20 centimeters in diameter.

It removes upto 86% of the NOx and 40% of the CO2 of the smokestack emissions that are bubbled through it. The algae are feeding on exhaust with 13% CO2 content. This size algae photobioreactor can't handle the entire exhaust emissions, it would need to be much larger for that.

This photobioreactor you see here on the roof of MIT, has since been dismantled and reassembled in Naboomspruit (now called Mookgopong) South Africa at a biodiesel plant.
http://www.infinitibiodiesel.com/