Abstract: An energy system comprising a mechanical vapor compression (MVC/MVR) subsystem is disclosed. The MVC/MVR subsystem is arranged to receive a liquid and is arranged to produce compressed vapor from the liquid and to heat the liquid being received, wherein the MVR-subsystem is arranged as a closed loop vapor MVR-subsystem arranged to reuse the produced vapor. The energy system comprises an energy subsystem connected to the MVC/MVR-subsystem and arranged to convert energy in a branched portion of the compressed vapor and/or in at least a portion of the liquid being heated into cooling by a cooling apparatus comprised by the energy subsystem and/or to generate electricity by an electric apparatus comprised by the energy subsystem. A method for converting of energy is also disclosed.

Abstract: Mechanical vapor recompression (MVR) liquid purification system includes a pressure-tight enclosure having a circular cylindrical elongated shape along a longitudinal axis A, and evaporation compartments E1-E3 arranged within the enclosure. Each compartment has a plurality of longitudinal pipes running from one sidewall to another sidewall, and circular sidewalls having openings for the plurality of pipes. A central tube runs along the axis A through the centers of the compartments E1-E3, and allows steam to flow from the second end to the first end. The number of pipes is highest in the first compartment E1, then gradually fewer in the second E2 and third E3. The pipes allow steam to flow from the first end to the second end. A compressor assembly includes a compressor provided with compressor vane members structured to provide steam flow along the longitudinal axis and a motor for rotating the compressor at a variable rotational speed.

Abstract: A process system comprising a mechanical vapor compression (MVC/MVR) subsystem arranged to receive a liquid and arranged to produce compressed vapor from the liquid and to heat the liquid being received is disclosed. The MVR-subsystem is arranged as a closed loop vapor MVR-subsystem arranged to reuse the produced vapor. The process system comprises a process subsystem connected to the MVC/MVR-subsystem and arranged to receive a branched portion of the compressed vapor, wherein the process subsystem is arranged to use the branched portion of the compressed vapor during operation of the process subsystem. A method for operating a process system is also disclosed.

Abstract: An energy system comprising a mechanical vapor recompression (MVR) subsystem is disclosed. The MVR-subsystem is arranged to receive a liquid and is arranged to produce compressed vapor from the liquid and to heat the liquid being received. The energy system comprises a heat subsystem connected to the MVR-subsystem, which heat subsystem is arranged to use a branched portion of the compressed vapor and/or at least a portion of the liquid being heated to produce energy. A method for producing energy is also disclosed.

Abstract: A mechanical vapor recompression (MVR) arrangement includes a compound turbine system, a pressure-tight enclosure provided with a first end and a second end, having an essentially circular cylindrical elongated shape along a longitudinal axis A, and a central tube with an essentially circular cross-section and running within the enclosure to allow steam to flow from the second end to the first end. The MVR arrangement includes an inner central tube arranged concentrically within the central tube and running from the second end to, or towards, the first end, where the inner central tube has an outer diameter related to the inner diameter of the central tube such that a steam flow conducting space is provided between an outer surface of the inner central tube and an inner surface of the central tube. The compound turbine system includes a turbine assembly with a turbine having axial turbine vane members.