PELLET BOILER AND STIRLING ENGINE
OkoFEN is working on the OkoFEN_e project, with the ultimate goal of the combination of a pellet boiler with a Stirling engine.
For the ÖkoFEN engineers a free-piston Stirling engine of Microgen Engine Corporation is available for the integration in the pellet boiler.
This Stirling engine operates in a hermetically sealed system, with helium as the working gas. The piston motion is then converted by an integrated generator into 1 kW of electrical energy, at 50 Hz AC, which matches the type of electricity required in the home.
The remaining heat is then used for space heating of the living areas and for domestic hot water generation.