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Corporação Universitária para Pesquisa Atmosférica

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Living Off Grid - A Home Made Deep Well Pump - LivingGreenAndFrugally.com

Home-made Hydraulic ram pump.

Off Grid Living – Micro-Hydro Water Turbine

basic schematic of wind generator

Water wheel generator http://makingyourown.ludlowsurvivors.com/WWPG.html

Telha com placa solar

solar tank heat exchanger supports

Purifying Water Using Passive Solar Water Distillation

With the sun's energy,this simple single-basin, passive-solar distiller can produce up to 4 gallons of purified water per day.