Appropedia:User experience/MainPageRedesign5

From Appropedia
Jump to navigation Jump to search
Welcome to Appropedia,
8,863 articles in English
Template:Main Page banner

Sharing knowledge to build rich, sustainable lives

Welcome to Appropedia

We develop knowledge to build rich, sustainable lives (read our vision and mission).

Explore solutions for sustainability, appropriate technology, poverty reduction, and permaculture. You are encouraged to add to and edit Appropedia with your original research on these subjects. To learn more about appropriate technology, we invite you to check Portal:Appropriate technology.

Browse our categories or all 8,863 articles. Contributors have made 431,749 edits and uploaded 35,164 files.

Climate changeCulture and communityDesignEnergyEnvironmentEnvironment rehabilitationFood and agricultureFundamental human_needsHealth and safetyInternational developmentKnowledgeTransportWater


Announcements — more

To catch the rain cover.png Rainwater catchment around the world.
Get a paperback on Amazon or free digitally at http://www.tocatchtherain.org.


From today's featured article

Selected quote
Every designer's dirty little secret is that they copy other designers' work. They see work they like, and they imitate it. Rather cheekily, they call this inspiration.

Aaron Russell

Selected page...

The Kitjito Windpump
Windpumps. Windpower technology dates back many centuries. There are historical claims that wind machines which harness the power of the wind date back to the time of the ancient Egyptians. In Europe the first windmills were seen much later, probably having been introduced by the English on their return from the crusades in the middle east or possibly transferred to Southern Europe by the Muslims after their conquest of the Iberian Peninsula.

The first half of the 20th saw further development, particularly a move toward propeller type wind machines for electricity production. By the 1920's 6 million windpumps were being used in the USA alone and their manufacture and use had become commonplace on every continent.But the glory of the windpump was short-lived. With the advent of cheap fossil fuels in the 1950's and 1960's and the development of pumping technology the windpump became almost obsolete in the USA.

There are manufacturers in several developing countries now producing windpumps. The uptake of wind machines for water pumping, however, has been generally very slow even though the technology is well suited to the demand of many regions of Africa, Asia and Latin America. Read more...

Highlighted project

Creating a solar cooker out of local invasive species and waste materials in order to pasteurize water and be an alternative to the use of fossil fuels for cooking food.
Creating a solar cooker out of local invasive species and waste materials in order to pasteurize water and be an alternative to the use of fossil fuels for cooking food. Read more or check our book
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.

edit  watch   Selected service learning projects gallery (refresh)

Blog

On this day...

Hot topics

Did you know...

Selected categories
Topics
Energy

Solar
Water
Construction zone — correct mistakes & flag spam as needed

Welcome to Appropedia/Construction1

Today's featured picture

Note: Appropedia's newest files may not yet comply with our policies.

Please help Appropedia grow

We want your projects, current works, observations and wisdom! See Contributing content. Improve articles by clicking "edit" at top of the page or section. Our philosophy is: Be Bold and contribute!

Questions? Comments? Visit the Village Pump. Also discuss Appropedia and related topics over on the Permies permaculture forums.

Find us on Facebook, Pinterest, and Twitter. Check our Flickr images and YouTube videos.

Appropedia languages

<div id="mp-oaow" style="padding:2px 5px

Social media

Template:Main Page interwikis