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Heating Buildings With Solar Energy Stored in Sand

Cars That Think

It is a daunting question that a startup called Polar Night Energy, in the small and chilly nation of Finland (Figure 1), is attempting to answer. The system uses electricity to heat air, which is then circulated through an exchanger that heats water and distributes it to multiple buildings in the city’s Hiedanranta district (Figure 2).

Store 91
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New protocol to enhance photosynthetic production of hydrogen from green algae

Green Car Congress

A research group from the University of Turku, Finland, has developed a new protocol to deliver sustained hydrogen photoproduction in green algae under a train of strong white light pulses interrupted by longer dark phases. Efficient H 2 photoproduction in green algae occurs in the light after a period of dark anaerobic incubation.

Hydrogen 186
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Soletair demo plant produces renewable hydrocarbon fuel from CO2 captured from the air

Green Car Congress

VTT Technical Research Centre of Finland and Lappeenranta University of Technology (LUT) are beginning testing of the Soletair demo plant, which uses air-captured carbon dioxide to produce renewable fuels and chemicals. The pilot plant is coupled to LUT’s solar power plant in Lappeenranta. kW solar PV power plant at LUT.

Renewable 244
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Test of Planet-Cooling Scheme Could Start in 2022

Cars That Think

The proposal calls for what’s known as “solar geoengineering”: cooling the planet by deflecting sunlight that would otherwise strike the planet. Little is known about how, or whether, solar geoengineering might work and how the particles would react and move in the stratosphere.

Ozone 119
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