Micro-CHP Based on Biomass Gasification in a Downdraft Gasifier and Stirling Engine

K. Pieniniemi, Y. Muilu & U. Lassi
The aim of this work was to study Stirling engine as a part of a micro­CHP power station to produce heat and electricity simultaneously and compare the emission levels of the Stirling engine to a micro­CHP based on wood gasification and internal combustion (IC) engine. Stirling engine can be used together with traditional solid wood or wood chip boilers. Unfortunately the flue gas of the direct combustion of biomass contains impurities like particles, ash, soot...