MOTHER's Solar Air Heater

Because an earlier version of this solar air heater included an expensive, hard-to-obtain material, MOTHER EARTH NEWS' crack research team has come up with this alternative version.



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Diagram shows air flow patterns generated as sunlight falls on the solar air heater.
MOTHER EARTH NEWS STAFF
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The solar air heater from the outside and inside.
PHOTO: MOTHER EARTH NEWS STAFF
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