DIY solar heater constructed with aluminum cans

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Manoel Netto @ Apr 30th 2007 9:51PM

An eco-initiative from Brazil has created a water solar heater made with recicled material such as plastic bottles and longlife milk packs. The invention was patented so it cannot be industrialized, comercialized on any forms.
Check release here, in portuguese : http://www.tecnocracia.com.br/arquivos/agua-quente-para-todos

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