Portal:Sustainability

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The Sustainability Portal

Sustainable tools to meet fundamental human needs.W

Sustainability is expressed as meeting present environmental, social, and economic needs without compromising these factors for future generations A practice cannot be said to be 'sustainable for X years/generations.' The use of any span of time disqualifies the activity. Sustainability is for perpetuity.

Sustainability also means greater efficiency in resource use, ultimately giving benefits to economic growth and overcoming poverty, as well as health and quality of life.

Sustainable design and sustainable development are critical factors to sustainable living. Sustainable design encompasses the development of appropriate technology, which is a staple of sustainable living practices. Sustainable development in turn is the use of these technologies in infrastructure. Sustainable architecture (see Green building) and agriculture are the most common examples of this practice.

 

The Geysers in Northern California.
Geothermal power is generated from the high temperatures that can be found in various parts of the earth's crust such as volcanoes, hot springs, and geysers. The water that surrounds and fills the gaps between the rocks in the crust is raised in temperature by these natural processes. This hot water is then pumped to the surface and its steam is captured and used to create electrical power through a turbine system.

There are three common types of geothermal power: dry steam, flash steam, and binary cycle. Dry steam is rare and uses the steam directly from the earth, flash steam pumps the hot water that naturally occurs in the earth to the surface and utilizes its steam, and binary cycle uses a secondary fluid and its vapor to power a generator.

Dry stream geothermal plants use natural steam directly from the Earth. Once the steam pocket is tapped, the steam is channeled directly into a turbine which converts the thermal energy into electrical power. (more types follow)

Ecological dry toilets at Pedregal

Ecological dry toilets at Pedregal, a Permaculture Demonstration Center in Oaxaca, Mexico.

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Selected topics

Project articles: AEF greywater · Aleiha's parabolic solar cooker · Argentina photovoltaic · Asthma inhaler spacers · Biomass gasification · Blue ox earthen oven · Briceland PV · CCAT natural paint project · CCAT pedal powered innovations · CCAT Wash n Flush · CCAT's Vermicomposting Bin · Chicken Tractor · Corn Cob Charcoal Crusher · Decreasing turbidity to optimize solar water disinfection · Ecological dry toilets at Pedregal · Ersson rainwater harvest and purification · Ethanol from organic sugar beets versus refined cane sugar · FBP Nutsy · Fixable Infant Incubator · Greywater Ecuador La lagrima purificadora · Hexayurt project · Home biogas system · Hydroponic Vertical Garden at Sembradores Urbanos · Kiva's straw bale greenhouse · Micro filter dams at Pedregal · New Dawn composting toilet · Occidental greywater · Open source 3-D printing of OSAT · Parabolic basket and tin can solar cooker · Photovoltaic vaccine refrigeration at Centro De Salud · Rainwater catchment at Isla Urbana · Solar Charged Lawnmower · Sun Frost energy efficient shower · Terraces and ditches at Petegral · UABJO Demonstration Wetland Wastewater Treatment, Reclamation, and Outreach · WaterPod Rocket Stove · Wild Chick Farm


Other articles: Alternative energy · Anaerobic digestion · Applied Sustainability · Appropriate technology · Aquaculture · Ashden Awards · Bioenergy · Biofuel · Biogas · Carbon footprint · Climate change · Compost · Composting · Desertification · Ecotourism · Ecovillages · Energy conservation · Environmental law · Environmentalism · Famine · Food security · Gasification · Global warming · Green building · Green cities · Green cleaning · Green computing · Hybrid vehicle · Industrial ecology · Industrial symbiosis · Life cycle assessment · List of environmental issues · Local food · Net metering · Overpopulation · Peak oil · Permaculture · Population control · Population density · Population growth · Recycling · Self-sufficiency · Simple living · Soil erosion · Solar cell · Solar power · Straight vegetable oil · SustainabilityW · Sustainable agriculture · Sustainable building · Sustainable business · Sustainable city · Sustainable community · Sustainable design · Sustainable development · Sustainable energy · Sustainable living · Sustainable technology · Sustainable transport · Tragedy of the commons · Transition Towns · Urban sprawl · Waste vegetable oil · Water conservation · Water purification · Wind power · Wind turbine

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