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Revision as of 05:11, 12 March 2013

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Sharing knowledge to build rich, sustainable lives.

Appropedia is for collaborative solutions
in sustainability, appropriate technology, poverty reduction, and permaculture.

You are encouraged to add to and edit Appropedia -
your site to find, co-create and improve the solutions we need. Our vision and mission.

Contributors have made 392,352 edits and uploaded 31,518 files.
Browse our categories or all 8,292 articles.

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Announcements — more

To catch the rain cover.png You made it happen! Get a paperback on Amazon or digitally at http://www.tocatchtherain.org.


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Rope pump upper construction
Rope pumps. Industrial hand pumps, such as the Indian Mark II, for communal wells donated by development projects often break down after two years. If maintenance costs are the responsibility of the users, then this cost is too high when repairs prove necessary and the pump is left nonfunctional.

An alternative reliable hand pump is needed for communal and private use to supply clean drinking water and irrigation. These pumps will raise the standard of living if they are low cost, reliable and pump water effectively. Efficiency is critical to irrigate a garden in the dry season due to the relatively large amount of water involved. Such gardens provide food and increased income.

Local affordability, maintenance and good pump efficiency are required features. Local affordability means a twenty-to-hundred-fold cost reduction compared to imported industrial goods. Local maintenance is only possible when made with local resources and skills.

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WaterPod Rocket Stove

The WaterPod's only cooking appliance for the entire summer voyage. Discovery News says, "If rising ocean levels force us to figure out how to float, it might not be an entirely bad thing. Especially if the food tastes like this."

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Oliver Wendell Holmes Sr.
Man's mind, once stretched by a new idea, never regains its original dimensions.

Oliver Wendell HolmesW
The Sun photographed by the Atmospheric Imaging Assembly (AIA 304) of NASA's Solar Dynamics Observatory (SDO).
Solar energy, radiant light and heat from the sun, has been harnessed by humans since ancient times using a range of ever-evolving technologies. Solar radiation, along with secondary solar-powered resources such as wind and wave power, hydroelectricity and biomass, account for most of the available renewable energy on earth. Only a minuscule fraction of the available solar energy is used.

Solar powered electrical generation relies on heat engines and photovoltaics. Solar energy's uses are limited only by human ingenuity. A partial list of solar applications includes space heating and cooling through solar architecture, potable water via distillation and disinfection, daylighting, solar hot water, solar cooking, and high temperature process heat for industrial purposes.To harvest the solar energy, the most common way is to use solar panels.

Solar technologies are broadly characterized as either passive solar or active solar depending on the way they capture, convert and distribute solar energy. Active solar techniques include the use of photovoltaic panels and solar thermal collectors to harness the energy. Passive solar techniques include orienting a building to the Sun, selecting materials with favorable thermal mass or light dispersing properties, and designing spaces that naturally circulate air.

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ENGR 215 Introduction to Design projects – Fall 2008: Full Belly Project: The Fall 2008 semester of Engineering 215 worked with the Full Belly Project to adapt their Universal Nut Sheller in the following three manners:

Fall 2008 ENGR 215 Intro to Design Projects - Full Belly Project
The LC sheller
Innovating concrete with sawdust and clay to lower the costs and weight using materials available in some parts of Western Africa  
The Full Bell
Improves the original UNS by reducing the cost and increasing durability of the sheller  
Hot Dang Plastic Encasement
Waste plastic bags available in Haiti cleaned, cut, crocheted and ironed into a hard plastic mold  
Pressed Plastic
A process to thermoform waste plastic bags to form molds for nut shellers using resources available in Haiti  
Nutsy
Shaped like an acorn the Nutsy aims to be a smaller, more portable, and more aesthetically pleasing version of the UNS for marketing within the US  
Multiplicity
Smaller U.S. prototype with exchangeable rotors for different size nuts  
Simple Simon
Smaller US prototype made from wood and aluminum  
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Energy

Solar
Water
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