Green Energy Futures: Ashley Lybyk again with a half built rocket mass heater that he and Rob Avis made to show Green Energy Futures how it works. You can see the wood sticking out of the combustion chamber and the chimney rising above the partially constructed heater.
Green Energy Futures: Rob Avis and Ashley Lubyk lower the second pipe over the chimney the fits inside the barrel of the finished rocket stove.
Green Energy Futures: The rocket mass heater releases heat fairly soon after starting the fire, but the genius in the system is that it stores a great deal of heat and slowly resleases it over a couple of days.
Green Energy Futures: A partially constructed rocket mass heater undergoing a test burn.
Green Energy Futures: Rob Avis teaching a course about rocket stoves.
Green Energy Futures: The rocket mass heater uses inexpensive materials including 3,000 - 5,000 lbs of cob, the clay and sand material that serves as thermal mass to store heat.
Green Energy Futures: Ashley Lubyk stokes the fire in his demonstration rocket mass heater.
Green Energy Futures: The rocket stove uses a lot less fuel and it loves smaller, dried material that ranges from construction material to small twigs and even pine cones.
Green Energy Futures: Dancing in the mud is the tried and true method of preparing the cob from sand and clay.
Green Energy Futures: 3 Here’s 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.