Get our free book (in Spanish or English) on rainwater now - To Catch the Rain.

Bem-vindo ao Appropedia

From Appropedia
Jump to: navigation, search
Bem-vindo ao Appropedia,
Template:Main Page banner

Partilha de conhecimentos para construir ricos, vidas sustentáveis

Appropedia é para soluções colaborativas
in sustentabilidade, tecnologia apropriada e pobreza redução.

Você está convidado a adicionar e editar Appropedia -
seu site para encontrar, co-criar e melhorar as soluções de que precisamos. Nossa visão e missão.

Contribuintes têm feito 396,600 edições e carregou 32,009 files.
Navegue nosso Categorias ou all 62,142 páginas.

anúncios — mais

Fire-rocket-stoves-dvd.png

interessado em eficientes fogões a lenha? verifique o Wood Burning Stoves 2.0 DVD set Kickstarter de Paul Wheaton.

(Crowdfunding phase has now ended.) (refresh)

Who-logo.jpg

Tem um dispositivo inovador médica ou e-saúde solução configurações de segmentação em desenvolvimento? ver Inovadoras Organização Mundial da Saúde dispositivos médicos e soluções de saúde em linha para poucos recursos 2013. Fecha 15 de março.

From today's featured article

The only known photograph of Chief Seattle, taken 1864
This we know, the earth does not belong to man, man belongs to the earth. All things are connected like the blood that unites us. We did not weave the web of life, we are merely a strand in it. Whatever we do to the web, we do to ourselves.

Chief SeattleW

Selected page...

Project leads: Mark Ambrosino, Lauren Lamet, and Daniel Colman.
RFVB large.jpg
Photovoltaic vaccine refrigeration at Centro De Salud. This photovoltaic system was designed to power a DC Vaccine Refrigerator at the hospital Centro De Salud in Parras, Mexico. Centro De Salud had a list of items that needed to be purchased at their hospital. Among these was a new vaccine refrigerator. After learning of this, the project group members set out to design a PV system for the hospital that could fulfill this need.

PV systems are well suited for vaccine refrigeration for a few reasons. PV arrays are becoming an increasingly popular alternative to gas generators for supplying energy to off-grid vaccine refrigeration because of their ability to create reliable energy that requires little system maintenance. LINK PDF According to the World Health Organization, PV refrigeration systems are much more efficient at maintaining internal temperatures in refrigerators than gas generators. This creates for an overall greater reliability of the refrigerator system. In the case of Centro De Salud, having a PV powered vaccine refrigerator could prevent vaccine spoilage due to grid power outages, which can be very costly.

Highlighted project

Sun Frost energy efficient shower

Conventional showers minimize thermal comfort, maximize energy use and water consumption, and exacerbating moisture problems... A solution?

Aleiha's parabolic solar cooker
In physics, energy is an indirectly observed quantity. It is often understood as the ability a physical system has to do work on other physical systems. Since work is defined as a force acting through a distance (a length of space), energy is always equivalent to the ability to exert pulls or pushes against the basic forces of nature, along a path of a certain length.

Sustainable energy is the provision of energy that meets the needs of the present without compromising the ability of future generations to meet their needs. Sustainable energy sources are most often regarded as including all renewable energy sources, such as hydroelectricity, solar energy and power, wind power, wave power, geothermal energy and power, biomass fuel and energy, and tidal power. It usually also includes technologies that improve energy efficiency.

While many renewable energy projects are large-scale, renewable technologies are also suited to rural and remote areas, where energy is often crucial in human development. As of 2011, small solar photovoltaic (PV) systems provide electricity to a few million households, and micro-hydro configured into mini-grids serves many more. Over 44 million households use biogas made in household-scale digesters for lighting and/or cooking, and more than 166 million households rely on a new generation of more-efficient biomass cookstoves.

edit  watch  Selected service learning Projects gallery (refresh)

Engr305 Appropriate Technology Projects: Below are selected service learning projects from Engr305 Appropriate Technology, which is a course on appropriate technology at Humboldt State University taught by instructor Lonny Grafman.

Chris's ENGR305 Solar Food Dehydrator

A hybrid, solar food dehydrator  
Compressed earth brick press

An exploration of compressed earth bricks  
Deidre's vertical vegetable garden

Solar powered vertical vegetable garden  
Devan's vertical axis wind turbine

Experimental Vertical Axis Wind Turbine  
Engr305 peanut sheller project

Peanut sheller made from clay and newspaper  
Engr305 pulser pump

A working model of a Pulser pump  
Engr 305 solar learning station

Instructional Solar Learning Station  
ENGR305 windbelt

Testing new materials for prototype windbelts  
Ethanol from organic sugar beets versus refined cane sugar

Determining the cost inputs and energy outputs of small scale ethanol production  

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

Imagem apresentado hoje

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

Por favor, ajude Appropedia crescer

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.

As mídias sociais

Facebook 50px 50px 60px 50px 50px 50px 50px 50px 50px 50px

Template:Main Page interwikis