Energy recovery using sliding vane rotary expanders

Energy recovery from low grade energy sources represents a technological challenge which can significantly contribute to the energy balance between production and consumption. Mechanical and electrical production can be done both from thermal energy usually wasted and low temperature renewable sources. In this sense, the interest is twofold. Many efforts have been made and studies produced, mainly making reference to a well known organic Rankine cycle (ORC) of transformations: in spite of this, the expander technology still represents an open aspect and call for a reliable and low cost development.

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