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Windmillprint-crop.jpg As part of a 3-D printing class, graduate students will be designing printable open-source appropriate technology for sustainable development. If you want a technology designed to be 3-D printed, post your ideas here. Chosen designs will be made and open-sourced for the global community. Deadline Nov. 13, 2014


Earth bound radiation losses
The solar resource. Solar energy is the source of all energy on earth, available to us in a number of derivatives. Plant matter for example, which relies on solar energy for nutrition, experiences natural compression and decomposition over millions of years to form the the fossil fuels we use today for electrical generation and transportation. Other examples of this can be seen in use of biomass for fuel or the harvesting of wind energy which is reliant on solar heated air for the formation of currents.

We are also able to utilize the solar resource directly. Solar thermal technologies take advantage of this resource to heat a working fluid that can transfer energy to an air stream or water for domestic or commercial use. Solar Photovoltaic or PV devices exploit various materials (principally Silicon) that experience sub-atomic variations when exposed to solar energy in order to induce an electric current. Both solar PV and thermal technologies provide a useful source of energy with little to no moving parts, no pollution and very little embodied energy.

Sun Frost energy efficient shower

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

Rachel Carson
The more clearly we can focus our attention on the wonders and realities of the universe around us, the less taste we shall have for destruction.

Bicycle wheel
Transport. According to the Appropriate transport manual, sustainable transportation is a strategy for the flow of people and goods across the Earth that meets the needs of the present without compromising the ability of future generations to meet their own needs. Transportation accounted for 32.6% of US green house gas emissions in 2005. In addition to the widely publicized environmental consequences of driving automobiles, it is also socially and economically costly:
  • Land use: Parking and roads use valuable land resources.
  • Transportation equity: Driving, with all of its expenses, costs the average U.S. household $7,000 per year per vehicle.
  • Economics: Most of the money spent on driving leaves a local economy, weakening it.
  • Community: Travelers outside of their cars interact more with their physical environment and each other.
  • Safety: The presence of pedestrians and cyclists make our neighborhoods safer from crime. Conversely, 42,000 Americans are killed in car accidents every year.
  • Health: Increasingly, Americans are suffering from weight-related illnesses. This is partly attributable to the decline in active transportation use and availability.

Building and encouraging alternatives to the single-occupant vehicle, or, for short "alternative transportation," is imperative. Some alternative transportation advocates have taken to using the term, sustainable transportation, instead of the previous, widely-used "alternative transportation" term to avoid sidelining their interest from the mainstream.

Many efficient, practical, and inexpensive sustainable transportation technologies already exist, meaning activism, policy work, and planning research is most often more crucial to developing sustainable transportation than technology development.

edit  watch  Selected service learning Projects gallery (refresh)

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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