Rocket Mass Heater

A rocket mass heater is a clean burning, high performance heating system. Although it is similar to the rocket stove and masonry heater, the rocket mass heater contains chambers designed to draw exhaust horizontally before leaving a vertical flue or chimney. This creates a thermal store large enough to retain heat for many hours. With…

Adding Mass for Solar Gain

Adding thermal mass increases the ability of a material to store heat energy. Brick, adobe, rammed earth, and earthbags are all great examples of mass used in building. To understand how mass works think about an adobe dwelling in the desert region (New Mexico, Arizona). The heat of the day travels through the walls at…