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Kitras OR-CROS-06-PB 7-Inch Handmade Glass Cross

Thermosiphon Solar Air Heater with heat storage

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Solar thermal collectors: A solar thermal collector collects heat by absorbing sunlight. The term "solar collector" commonly refers to solar hot water panels, but may refer to installations such as solar parabolic troughs and solar towers; or basic installations such as solar air heaters. Solar power plants usually use the more complex collectors to generate electricity. Simple collectors are typically used in residential and commercial buildings for space heating.

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fra Instructables.com

DIY Solar Panels - air heaters made of pop cans

DIY Solar panels - air heaters made of pop cans.

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