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Jac Londe

By Reflecting Sunlight, Greenland Helps Keep the Arctic Cool : Image of the Day - 0 views

earthobservatory.nasa.gov/...view.php

sunlight onde science soleil albedo

shared by Jac Londe on 03 Nov 09 - Cached
  • Jac Londe on 03 Nov 09
     
    Current information about climate and the environment.
Jac Londe

Markus Kayser - Solar Sinter Project - 0 views

vimeo.com/25401444

Vimeo Solar printer project development programming video sand 3d glass

shared by Jac Londe on 04 Jul 11 - No Cached
  • Jac Londe on 04 Jul 11
     
    In a world increasingly concerned with questions of energy production and raw material shortages, this project explores the potential of desert manufacturing, where energy and material occur in abundance.In this experiment sunlight and sand are used as raw energy and material to produce glass objects using a 3D printing process, that combines natural energy and material with high-tech production technology.
Jac Londe

Solar power, with a side of hot running water - 0 views

www.physorg.com/...1-05-solar-power-side-hot.html

Solar science power electricity MIT

shared by Jac Londe on 09 May 11 - No Cached
  • The conversion of sunlight into electricity has been dominated by photovoltaic and solar thermal power generation. Photovoltaic cells are deployed widely, mostly as flat panels, whereas solar thermal electricity generation relying on optical concentrators and mechanical heat engines is only seen in large-scale power plants. Here we demonstrate a promising flat-panel solar thermal to electric power conversion technology based on the Seebeck effect and high thermal concentration, thus enabling wider applications. The developed solar thermoelectric generators (STEGs) achieved a peak efficiency of 4.6% under AM1.5G (1 kW m−2) conditions. The efficiency is 7–8 times higher than the previously reported best value for a flat-panel STEG, and is enabled by the use of high-performance nanostructured thermoelectric materials and spectrally-selective solar absorbers in an innovative design that exploits high thermal concentration in an evacuated environment.
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