Jun
8
American Institute of Physics researchers have constructed a photovoltaic cell that works both day and night by making use of the heat leaking from Earth back into space. At night, solar cells radiate and lose heat to the sky, reaching temperatures a few degrees below the ambient air. The device under development uses a thermoelectric […]
May
25
Massachusetts Institute of Technology engineers have developed a heat engine with no moving parts that is more efficient than a steam turbine. The researchers say the design could someday enable a fully decarbonized power grid. Their new demonstrations show that it converts heat to electricity with over 40 percent efficiency – a performance better than […]
Apr
28
Seagull Wings Inspire High Efficiency Wind Turbine Blades
April 28, 2022 | 1 Comment
Open Image…Save ImageOpen Image (using #TmpD/ia)… Open Image…Save ImageOpen Image (using #TmpD/ia)… Scientists from China show a bionic approach combining features of a seagull’s wing to one called a Gurney flap, can greatly improve wind turbine performance. A Gurney flap is an engineered flow control accessory. Combining engineered flaps with the other structures inspired by seagull wings improves lift and reduces stalling in wind energy […]
Apr
27
Prospects Up For Efficient Stable Perovskite Solar Cells
April 27, 2022 | 1 Comment
Open Image…Save ImageOpen Image (using #TmpD/ia)… Open Image…Save ImageOpen Image (using #TmpD/ia)… A research team co-led by chemists from City University of Hong Kong (CityU) and Imperial College London (Imperial College) has developed new, highly efficient and stable perovskite solar cells. The breakthrough invention is expected to greatly accelerate the commercialization of perovskite photovoltaic technology, providing a promising alternative to silicon solar cells. The team’s […]
Mar
8
University of Cambridge researchers have made tiny ‘skyscrapers’ for communities of bacteria, helping them to generate electricity from just sunlight and water. The researchers used 3D printing to create grids of high-rise ‘nano-housing’ where sun-loving bacteria can grow quickly. Then they were able to extract the bacteria’s waste electrons, left over from photosynthesis, which could […]
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