Seebeck effect

Category:Sasecurity
Generate electricity with temperature difference by em-TECH in MA. 
http://www.practicalsolar.com/technology.html#Practical_Solar_heliostats_with_concentrator_cell_technology_(advanced_PV)
* http://www.termo-gen.com/pages/generators.html Commercial unit 300watt electric power
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Wims parabolic trough
Category:Energy