En los altos orientales, en la frontera con Mozambique, donde habita la etnia Shona, los residentes a lo largo del Rio Nyamarimbira desde hace tiempo buscaban respuesta a sus problemas de abasto de agua y electricidad. El flujo del agua es dirigido hacia una turbina, que es activada por el chorro de agua para generar electricidad. El agua que sale del otro lado puede ser utilizada para el hogar o para regar cultivos. Entre los resultados:.
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En los altos orientales, en la frontera con Mozambique, donde habita la etnia Shona, los residentes a lo largo del Rio Nyamarimbira desde hace tiempo buscaban respuesta a sus problemas de abasto de agua y electricidad.
El flujo del agua es dirigido hacia una turbina, que es activada por el chorro de agua para generar electricidad. El agua que sale del otro lado puede ser utilizada para el hogar o para regar cultivos. Entre los resultados:. But he had a "gradual awakening to wanting passionately to work with renewable energy because I thought there was a better way.
The U. In , Jones joined with friends Wes Kennedy and Ray Tuomey to start up Namaste which means "greeting of great respect, celebrating the interdependence of all living beings" Solar Electric.
It is the very model of a righteous business, both ecologically and socially. The company's website states "We measure 'profit' and 'success' in a holistic way that includes not just traditional economic metrics i.
Namaste's unique business model has made it the subject of many case studies by MBA students. The company can show impressive results: Namaste has installed over photovoltaic systems in the Denver-Boulder area, including prominent projects such as the Governor's mansion. The number of employees has grown from 3 to Triple-digit growth i. Business really took off in , when the local utility, Xcel, announced its rebate program.
For more information see the Namaste Solar Electric website. Este sitio web contiene materia traducida del sitio web www.
The University of Hawai'i at Manoa UHM campus is the second-largest consumer of electricity on the island of Oahu, second only to the military.
In response to the "sticker shock" of rapidly rising electric bills and its impact on the University's budget, the UHM Chancellor's Office convened an Energy Summit on October 24, The Chancellor proposed a Clean Energy Policy with the ambitious goals of:. The University and the electric company formed a partnership to work toward these goals. Saunders Hall, a seven-story building which houses the social science departments, was chosen as a pilot project to implement projects on a trial basis which could then be "rolled out" across the entire campus.
Two electric meters were installed in the building to establish a baseline demand and measure the impact of any energy conservation projects. In the spring of the Public Policy Center surveyed all the occupants of Saunders Hall regarding their energy use. This also served as a behavior modification tool for encouraging people to turn off their computers at night and to take the stairs more often.
There were many more fluorescent lights than were needed. Over 2, bulbs were removed, for an energy savings of , kilowatt-hours kwh per year. Forty-five percent of Saunders offices have individual air conditioners, but the rest are subject to a centralized system which, unfortunately, is permanently set to "CLO 1" - a temperature which may be appropriate for people in business suits, but not for Hawaiian students.
Someday that system may be replaced, but in the meantime an air conditioning shutdown project has yielded great savings. Whereas the air conditioning was previously always on, now it is turned off from p. The resulting savings are estimated at , kwh per year. Research is being conducted on whether the shutdown hours could be expanded on weekends.
HUB received a letter from the Chancellor's office asking if the group could perform similar energy audits and conservation measures on all the UHM buildings; the response was "not for free. With the encouragement of testimony from HUB members, the bill made its way through numerous committees in the state House and Senate.
But it was not heard in the Finance Committee before the final deadline, and thus failed. In addition to the energy conservation measures, five photovoltaic panels with microinverters on each have been installed on the Saunders rooftop, generating an estimated 1, kwh per year.
But the Sustainable Saunders Initiative takes a much more holistic view of sustainability than just energy. At its official Interactive Launch Party on Earth Day April 20 , Saunders Hall's seven floors were divided into fifteen theme areas, with exhibits and experts on topics such as recycling, composting, bicycling, climate change, energy and water conservation, renewable energy, architectural design, sustainability education, food security, and organic agriculture.
Each area was hung with graffiti paper so that the hundreds of students, faculty, staff, experts, and community members in attendance could jot down their own ideas. In February HUB began "dumpster diving" to retrieve recyclable materials and to analyze the waste stream. Now there are recycling bins on every floor of Saunders Hall for glass, aluminum and plastic. On the ground floor there are also 10 bins for paper and one for cardboard. Sustainable Saunders also obtained donations of low-flow water fixtures and a waterless urinal, which were installed by the Campus Facilities Office on Saunders' 6th floor.
One of the faucets even has a small turbine, so that water flowing down the drain generates enough electricity to power its sensor. Shanah Trevenna calculated that an expansion of the retrofit throughout the building could save enough water per year to fill over four Olympic-sized swimming pools, and would pay for itself in under 5 years.
I attended one meeting of HUB and found the room filled to capacity with very enthusiastic students. They reported on what they learned in the areas of policy, science, and organizing, as well as what other colleges across the country have been doing to promote sustainability.
Other business included discussion of whether HUB should become an official chartered student organization instead of a registered independent organization.
The Energy Team hosted a workshop series on some very technical topics, with experts discussing various energy systems as well as financing and lease options. It was a big success, with booths of eco-friendly products, services, information, and food, as well as a concert in the amphitheater.
Events like this create a "big buzz" for motivating as well as educating the broader community, says Tamara Armstrong. As for the idea of "rolling out" Saunders energy initiatives across the campus, some students from the Sea Grant College Program have taken up energy auditing, and the Facilities Management Office has become quite diligent in negotiating and implementing "energy scheduling initiatives" i.
The problem, according to mechanical engineer Blake Araki, is that the occupants who readily agree to air conditioning shutdowns are not in the biggest energy-using buildings. Many are concerned about mold or highly sensitive computers or scientific equipment; and some scientists who bring large research grants to the university feel they are entitled to hour air conditioning. Sustainable EWC has implemented some of the same measures, as well as an organic garden.
Outside the university, HUB members with experience in energy auditing have been hired by the Coast Guard and an art museum, with several other prospects in sight. Projects for the future besides installing the windmill include various Summer Session courses, workshops, and lectures on sustainability including Sustainability by Shanah Trevenna. For the fall, an exciting energy conservation competition is planned by the Public Policy Center among the seven floors of Saunders with the social sciences anthropology, geography, economics, sociology, political science, etc.
Also in the works is a program of mentoring K schools to do their own energy audits. What made Sustainable Saunders so successful is described in every article and interview as the enthusiasm, passion, energy, and commitment of the students. Interested students are immediately accepted and given real projects and opportunities to make a difference.
In the words of Jennifer Milholen:. When I decided to move from Kauai to Honolulu I started doing general google searches of organizations in Honolulu that were doing wide-reaching work in sustainability.
I knew that I wanted to get involved and have a tangible impact. Sustainable Saunders at UHM was a search result that came up over and over again, so I sent a simple email to Shannah who was the coordinator and was told that I was welcome at all of the meetings for all of the sustainability teams.
Shannah immediately made me feel welcome and able. I was given tasks and objectives right off the bat. I started participating in projects for the events and energy teams that I could tell were necessary and timely. I helped "dumpster dive" for the campus eatery waste audit. The data from those dives will be used to justify the sole use of biodegradable containers and cutlery on campus eateries. I also was asked to do extensive research on the potential for industrial size composters and biodegraders on campus.
For the first time I participated in the legislative process and testified in front of a Senate panel on the potential benefits of the Sustainable Saunders Internship Program Bill. That was an amazing experience. I was also able to help with the initial installation of solar panels on the roof of Saunders Hall. This has all taken place in a few short months. I went from having no experience in sustainability to having several wonderful ones.
Being a part of the Sustainable Saunders group has played an integral part in my journey toward becoming an avid supporter and activist for a sustainable human society and culture. I plan to continue working with this group for as long as possible. Shannah leads an amazing group of motivated and creative students who I know will do incredible things for the UHM campus and Hawaii. Energiequelle GmbH and the residents of Feldheim, Germany were determined to make the community completely energy independent—from fossil fuels and from the energy company that kept increasing prices.
It took about 5 years and 2 million euros, but in April they finally achieved this goal with a mix of renewable resources—wind, biogas, and solar—and their own heat and electricity networks.
In , Energiequelle co-founder Michael Raschemann built his first four meter wind turbines at Feldheim. Today there are 43, with an installed capacity of They produce an average of million kilowatt-hours kWh per year.
Feldheim's biogas plant was completed by the local farmers cooperative in Its input is 3, m3 of pig and cow manure, plus 6, tons of corn silage and crop residues. Its output is 11, m3 of fertilizer, 4 million kWh of electricity, and 4.
At first, only the cooperative and a pig farm were using the heat, but since a heat network was completed in December , the entire community benefits. In times of extreme cold, a wood chip power plant springs into action to supplement the biogas. It is estimated this saves , liters of fuel oil every year. Electricity also flows from Energiequelle's hectare Solarpark Selterhof. It was built on a former military training area donated by the municipality of Treuenbrietzen.
The city removed trees, and Energiequelle cleaned up unexploded ordnance to make way for 96 photovoltaic arrays. Each has a motorized tracking device, which Energiequelle now manufactures itself in its new factory EQ-SYS in Feldheim, using energy from its wind turbines. The capacity is now kW, and average annual output is 1. During more solar arrays will be added, and the solar park will have a capacity of 2.
According to Werner Frohwitter at Energiequelle, the community of Feldheim only uses about , kWh of electricity per year; the remainder is sold on the regional transmission grid. The final step was to build a new electric grid to become completely independent from energy giant Eon.
KG, in Its partners include all of the community's landowners households, plus 2 businesses, the farmers cooperative, the municipality of Treuenbrietzen, EQ-SYS, and Energiequelle.
Skip to search form Skip to main content You are currently offline. Some features of the site may not work correctly. DOI: Berrueta Published Engineering. Interest in household energy use and improved cookstoves is growing again, prompted this time by a breadth of concerns that range from local environmental, socio-cultural and, very particularly, health issues to global aspects related to the emissions of greenhouse gases. View via Publisher.
Estufa ecológica ahorradora de leña Patsari