Abstract: Device for expanding a fluid, wherein the device (1) is provided with an expander element (2) for expanding the fluid, a generator (3) and a transmission (4) between the two, characterized in that the generator (3) is a liquid-cooled generator and the expander element (2) is heated using liquid, wherein the device (1) is further provided with a common liquid circuit (8) for the generator (3) and the expander element (2), wherein the liquid circuit (8) comprises a liquid pump (10) which can pump up liquid from a liquid reservoir (11), wherein the liquid circuit (8) also comprises a liquid line (9) which runs from the liquid reservoir (11) and which incorporates the liquid pump (10), the generator (3) and the expander element (2).

Abstract: A method for energy conversion from pressure energy into electrical energy uses an expansion turbine. In the method, a pressurized, gaseous, first medium is heated before being fed into the expansion turbine. The expansion turbine drives a generator and a compressor. At least one gaseous second medium is compressed by the compressor in a heating arrangement. Heat generated by the compression and preferably also via utilization of ambient heat according to a heat exchanger principle is used for heating the gaseous first medium.

Abstract: A method for energy conversion from pressure energy into electrical energy uses an expansion turbine. In the method, a pressurized, gaseous, first medium is heated before being fed into the expansion turbine. The expansion turbine drives a generator and a compressor. At least one gaseous second medium is compressed by the compressor in a heating arrangement. Heat generated by the compression and preferably also via utilization of ambient heat according to a heat exchanger principle is used for heating the gaseous first medium.