A variant of the Fluidyne: the liquid piston ERICSSON engine

A special configuration of Stirling liquid piston engine, known as Fluidyne, was invented fifty years ago and many works have been devoted to it since then. variant the Fluidyne is presented, in which two ends U-tube containing are closed by valves, so that system obtained belongs family Ericsson engines rather than engines. This type low-tech considered be suitable for production low-power mechanical energy (up 1… kW), example pumping or drive an electric generator from renewable primary conversion (solar, biomass, hot gaseous effluents, ). In considered, working fluid engine air open cycle. Different configurations proposed extraction energy. The preliminary design a first demonstrator presented. Results dynamic “intracycle” model this presented case coupling with linear generator. allows determine frequency operation instantaneous position gas properties, global performance can predicted.