Abstract
Since fossil fuels such as petroleum, coal, and natural gas are limited resources, renewable energy such as solar, wind, and biomass will be needed as substitute fuels. We manufactured the practical Stirling engine using biomass fuel in 2005. And a new type of engine system that uses woody biomass fuel such as sawdust, firewood and woody pellet was proposed in this report. A burner using the woody biomass fuel heats the air in the expansion room to about 650℃ and a water cooled system cools the air in the compression room to about 60℃. In this condition, the new engine provided 3kW of electricity. And the heat from this engine powered electricity generating system can be recovered and used in a number of ways for space and domestic water heating.
