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in sustainability, appropriate technology, poverty reduction, and permaculture.
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Emilio Velis has been appointed the new Executive Director of the Appropedia Foundation! Read more... |
There are many applications for the direct use of solar thermal energy, space heating and cooling, water heating, crop drying and solar cooking. It is a technology which is well understood and widely used in many countries throughout the world. Most solar thermal technologies have been in existence in one form or another for centuries and have a well-established manufacturing base in most sun-rich developed countries.
The most common use for solar thermal technology is for domestic water heating. Hundreds of thousands of domestic hot water systems are in use throughout the world, especially in areas such as the Mediterranean and Australia where there is high solar insolation (the total energy per unit area received from the sun). As world oil prices vary, it is a technology which is rapidly gaining acceptance as an energy saving measure in both domestic and commercial water heating applications. Presently, domestic water heaters are usually only found amongst wealthier sections of the community in developing countries.
Turning corn cob agricultural waste into a cooking fuel that combats deforestation and indoor air pollution.
Oct 15 Visions: The Sustainable Future Town of Your Imagination [1]
Oct 13 Don’t frack with us: meet the victorious activist ‘Nanas’ of Lancashire [2]
Oct 10 Community involvement UK news: Becoming Unstuck With Relational Activism [3]
Oct 3 Climate news 2019: What does Greta Thunberg's call for equity mean? [4]
Sep 19 Climate news 2019: For the sake of life on Earth, we must put a limit on wealth, George Monbiot [5]
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The water leaving our homes carries nutrients and value. It may also contain pathogens, and/or harsh chemicals and care should be taken with it. However, it is not a great risk compared to blackwater (sewage). Redirecting the water we use for tasks such as showering allows us to reclaim some of that value to grow plants and recharge the water table. It may be necessary to choose our soaps and detergents more carefully, if we use the greywater for watering and fertilizing plants. |
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.
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