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Stoves Archive for November 2002
126 messages, last added Tue Nov 26 17:32:03 2002

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lanterns



Our group works in mountain areas in high latitudes, betwen 35º and 55º S, daylight in winter varies from 8 hs in the north to 4.5 hs in the south end, so lighting is a concern. (Open fires lights!!) HBLED,  high brightness LEDs,  seems to be an appropiate solution (See http://www.lightuptheworld.org/ ) Thermoelectric generators could be in many cases a better power source than PV panels,  given the power reqs of HBLEDs (1 W HBLED gives 40 lumens!!).
( In fact our most cost effective power source is a pico-wind generator, the area has quite strong and regular winds but.... people are clever and most houses are built in wind protected locations!!) 
Regards.
Roberto.