Ashley Lubyk with a completed rocket mass heater. You can see the barrel which contains the flue gases and the cob bench which acts as giant thermal battery, storing and releasing the heat over time.

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Published: June 2, 2016

Ashley Lubyk next to a completed rocket stove. Notice the barrel and the large cob bench he is sitting on. That cob bench acts as a thermal battery, storing the heat after the fire is burned out.

Ashley Lubyk next to a completed rocket stove. Notice the barrel and the large cob bench he is sitting on. That cob bench acts as a thermal battery, storing the heat after the fire is burned out.