Monday, December 12, 2016

Rocket Stove Greenhouse Heating System by Rob Avis from his excellent new 52 page e-book, “Passive Solar Greenhouses: A DIY Design Guide”

https://www.facebook.com/RocketStoveScience/photos/a.396340893811679.1073741828.395533333892435/485228548256246/?type=3&theater

https://youtu.be/BoW-ICO83hM

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