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Portal:Projects

The Projects Portal

Appropedia is the site for collaborative solutions in sustainability, poverty reduction and international development through the use of sound principles and appropriate technology and the sharing of wisdom and project information. It is a wiki, a type of website which allows anyone to add, remove, or edit content. Registration is encouraged but not required for contributors.

Appropedia has been described as an "appropriate technology wiki," but it is much broader than that - it is a green wiki, and a wiki for all matters of international development and aid. But most importantly, Appropedia is an open site for stakeholders to come together to find, create and improve scalable and adaptable solutions. For more about our motivation, see Appropedia:Mission.

To create a new project page, first browse the project articles and subcategories below for examples and check for possible collaboration opportunities, such as articles similar to what you're considering writing. If you are looking for ideas for your own project, check out our suggested projects. It is highly encouraged to tag your projects with their status -- you can do this with a few templates. Be Bold!

 More about Appropedia, suggestions, projects, and their status...

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Aleiha's parabolic solar cooker. The paraboloid is an interesting shape with some amazing qualities. It has the power to concentrate light, electronic waves, sound, etc. to its focus at the center. To find the focal point of a paraboloid, one must use the formula, $y=p*x^2$, where p is a constant. The variable y is the depth of the dish, and x measures the distance from the center axis to the maximum circumference of the dish. You have to pretend that there is an x axis going through the center of the base of the dish and a perpendicular y-axis passing from the center of the base of the dish to the focal point. The two numbers, x and y, represent a point on the paraboloid, and from that, you are able to determine where the focus is.

Parabolic cookers have been used for centuries now. The idea to concentrate light using curved mirrors was developed by the Greeks, Aztecs, Incas, Romans and Chinese. The Incas used bronze and gold for their mirrors and they built structures that were several stories high. This technology seems to have appeared around the same time for each of the civilizations. It is thought that Archimedes harnessed the technologyW to defend Syracuse from invading Roman fleets in 212 BC.

Highlighted project (Book)

Spacer for asthma medications made from a 500cc plastic bottle.

Project status boxes

 This OSAT has been designed but not yet tested - use at own risk.
 This OSAT has been modeled.
 This OSAT has been prototyped.
 This OSAT has been verified by: Name of organization.
 This OSAT has been deployed by: Whom at least: How many times in: Where.

You can help Appropedia by contributing to the next step in this OSAT's status.

Projects gallery

 AEF greywater: Recreating a failing greywater marsh at the Arcata Educational Farm.
 Aleiha's parabolic solar cooker: A very hot parabolic solar cooker.
 Argentina photovoltaic: A small photovoltaic system for a natural building/permaculture institute in Central Argentina.
 Backpack frame bike trailer: Big Russ towing one of the least-expensive bike trailer designs out there built from an old backpack-frame.
 Bike snow plow: A retractable snow plow for a bike.
 Biodigester Effluent Fertilizer Quality Testing with IRRI, in Mexico city
 Biodigester follow up and maintenance with IRRI in Puebla, Mexico.
 Bloomfield Cobb Bench: A cobb bench at Bloomfiled Elementary School in Arcata, CA.
 Briceland PV: 960W photovoltaic installation in Briceland, CA.
 CCAT's Vermicomposting Bin: Beautiful, pentagonal, Douglas Fir worm bin.
 CCAT's Living Roof: A living roof for CCAT's Earthen Oven.
 Ceiling insulation out of recycled Tetra pack at Pedregal in Oaxaca, Mexico.
 Chris's ENGR305 Solar Food Dehydrator: A hybrid solar food dehydrator, that adheres to as many of the principles of modern food dehydration.
 DIF Adobe Senior Center: Building an Adobe senior center in Parras, Coahuila México.
 Ecological dry toilets at Pedregal in Oaxaca, Mexico
 Ersson rainwater harvest and purification (original): Rainwater catchment and purification system, at less than \$1500
 Hotel Perote Solar Pool Heating System: Solar hot water system for a hotel pool in Parras, Coahuila México.
 Kiva’s straw bale greenhouse: Year round veggies in a homemade, just under the permitting limit, strawbale greenhouse.
 Micro filter dams at Pedregal in Oaxaca, Mexico
 Mini urban greenhouse for seed germination in Mexico City
 Occidental greywater: A five stage, activated sludge greywater system in drums.
 Open Solar Outdoors Test FieldOpen source photovoltaicsystems performance data
 Photovoltaic system at St. Jude's church: St. Jude's Church, Cupertino, CA
 Polyculture Planting at Sembradores Urbanos in Mexico City
 Rainwater catchment at Isla Urbana in Mexico City.
 Rainwater catchment at Pedregal in Oaxaca, Mexico
 Rainwater quality testing with Isla Urbana in Mexico City
 Raised Beds at Sembradores Urbanos in Mexico City
 Reforestation at Pedregal in Oaxaca, Mexico
 Solar Charged Lawnmower: Converting a very used gas power lawnmower into a solar charged, low emission, almost silent, lawn cutting machine.
 Sunny Brae Yurt: Building yurt to brave Humboldt's winter. Arcata, CA.
 Terraces and Ditches at Pedregal in Oaxaca, Mexico
 Tire shingles: Roof shingles made from old racing slicks.
 UTC Solar Distiller: Building a prototype solar distiller in Parras, Coahuila México.
 Worm bin at Sembradores Urbanosin Mexico City
 Zaragoza Solar Hot Water System: Solar hot water system for a residence in Parras, Coahuila México.