Energy Efficiency

Renzo Piano’s Dream of a Tiny House

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The aluminum-clad wood house is 8.2 feet wide by 9.8 feet long by 11.5 feet high. It features two rainwater tanks attached to a boiler, a composting toilet, triple-glazed windows and insulated walls that can withstand temperatures from minus 10 degrees to 105 degrees Fahrenheit. Electricity comes from three rechargeable batteries that plug into an … Read more

Photo Voltaic Technology — The State of the Art

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Science tells us that every square meter of the earth’s surface, when exposed to direct sunlight, receives about 1000 watts (1 kilowatt) of energy from the sun’s light. Depending on the angle of sunlight, which changes with the time of day, and the geographical location, the power of the sun’s light will be somewhat more … Read more

Building with Bioreactor Facade

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An experimental apartment building in Hamburg, Germany is harnessing the power of the sun to generate power, but not in the way you expect. Photovoltaic cells are totally yesterdays news — the BIQ building gathers power using a bioreactor façade packed full of microalgae. Large clear panels on the front of the building are where … Read more

Direct Use of Solar Energy for Distillation Systems

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As regional shortages of fresh water become more prevalent, solar distillation using a single-effect basin holds promise as a method to bring low-cost, clean, and ecologically-responsible water to remote area dwellers. Compound parabolic concentrators (CPCs) can be used to direct more light onto the still increasing the throughput and efficiency of these passive solar devices. … Read more

Crossing the U.S. on Ten Gallons?

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URBEE is a return to fundamentals, a rethink of traditional automotive design and manufacturing. As a species endangered by our own actions, we must quickly learn to stop burning fossil fuels. Surely, the ultimate goal of Design is to serve the ‘public good’. Therefore, corporations and individual designers have a responsibility to offer products that … Read more

Little House on the Trailer

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Dee Williams decided to downsize from a 1,500 square foot home to a 84 square foot home after a trip to Guatemala. She built her current home, “The Little House,” herself for about $10,000. With a propane tank for heat and electricity coming from solar panels, Williams cost of living runs extremely low. Consider the … Read more

Sunlight Where You Need It

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SunnyBot is about the size of a large desk lamp and is equipped with an on-board mirror that continuously adjusts to reflect the sun’s rays on a chosen area. It is integrated with a dual-axis microcomputer that’s powered by a row of solar cells and comes with an optional feedback system. The device redirects 7,000 … Read more