The initial goal of this project was to design and build a system that would provide heat and electrical power to our house simultaneously (CHP), using locally grown and harvested biomass as the fuel. The system was to use gasification to turn biomass such as wood chips or grass into a flammable mixture of carbon monoxide and hydrogen (see the gasification page for more on this). This mixture of gases known as wood gas, syn-gas, or producer gas could then be used to fuel a modified internal combustion engine. the engine would turn a generator, and the waste heat would be collected and stored in water for space heating and domestic hot water.
Over time the project has shifted slightly, but the primary goal of a locally fueled CHP system has stayed the same. I am now looking into an external combustion engine, such as a stirling or steam engine to run the generator. Check out the Journal page for to see how the project has progresses and evolves.