Abstract: A dual impeller includes: a hub configured to rotate about a rotation axis; a plurality of first blades which are disposed on a first surface of the hub along a circumferential direction of the hub; a first shroud which is mounted on the plurality of first blades to cover the plurality of first blades; and a plurality of second blades which are disposed on a first surface of the first shroud along a circumferential direction of the first shroud.

Abstract: There is provided a supercritical carbon dioxide (CO2) power generation system including a first compression part and a second compression part to independently compress the working fluid; a first regeneration part to heat the working fluid compressed by the first compression part; a second regeneration part to heat the working fluid heated by the first regeneration part and the working fluid compressed by the second compression part; a main heat exchange part to transfer heat generated from a heat source to the working fluid; an expansion part to generate power by expanding the working fluid; a power transmission part to transmit the power; and a power generation part to generate electric power using the power.

Abstract: A dual impeller includes: a hub configured to rotate about a rotation axis; a plurality of first blades which are disposed on a first surface of the hub along a circumferential direction of the hub; a first shroud which is mounted on the plurality of first blades to cover the plurality of first blades; and a plurality of second blades which are disposed on a first surface of the first shroud along a circumferential direction of the first shroud.

Abstract: There is provided a supercritical carbon dioxide (CO2) power generation system including a first compression part and a second compression part to independently compress the working fluid; a first regeneration part to heat the working fluid compressed by the first compression part; a second regeneration part to heat the working fluid heated by the first regeneration part and the working fluid compressed by the second compression part; a main heat exchange part to transfer heat generated from a heat source to the working fluid; an expansion part to generate power by expanding the working fluid; a power transmission part to transmit the power; and a power generation part to generate electric power using the power.

Abstract: A method of generating control data for a manufacture of a three-dimensional object comprises the following steps: identifying surface data in a computer-based model of said object that correspond to a surface of the object, which is destined to get into contact with the fluid, determining the flow path adjacent a portion of said surface in said computer-based model, modifying said computer-based model such that support structure data are added to the model, said data specifying a support structure designed to be in contact with said portion of said at least one surface during the manufacture of said object, wherein said support structure data are added to the model such that at least one contact region between the support structure and said portion will essentially extend in parallel to the flow path adjacent said portion, preferably deriving control data for the manufacture of the object from the modified model.

Abstract: A fluid machine with variable vanes includes: a case, a plurality of vanes arranged along a circumferential direction of the case; a transmission ring rotatably provided in the case and configured to rotate with respect to the case; a transmission member provided on the transmission ring; and a driving assembly detachably attached to the case and including: a driving shaft; and a connection member connected to the transmission member through a through hole of the case provided at a position corresponding to the transmission member and configured to rotate together with the driving shaft, wherein the connection member is disengageably engaged with the transmission member such that the driving assembly is disconnected from the case through the through hole.

Abstract: A blade assembly including a rotor; a body portion connected to the rotor and having a space therein; and at least one vibration reduction member provided in the space.

Abstract: A blade assembly including a rotor; a body portion connected to the rotor and having a space therein; and at least one vibration reduction member provided in the space.

Abstract: A fluid machine with variable vanes includes: a case, a plurality of vanes arranged along a circumferential direction of the case; a transmission ring rotatably provided in the case and configured to rotate with respect to the case; a transmission member provided on the transmission ring; and a driving assembly detachably attached to the case and including: a driving shaft; and a connection member connected to the transmission member through a through hole of the case provided at a position corresponding to the transmission member and configured to rotate together with the driving shaft, wherein the connection member is disengageably engaged with the transmission member such that the driving assembly is disconnected from the case through the through hole.

Abstract: A turbocompressor for use with a process fluid and including an axial expansion turbine for expanding the process fluid and a centrifugal compressor for compressing the process fluid. The turbine and compressor share a common shaft, all of which can be housed by a common housing that encloses sealed spaces. The axial expansion turbine has a rotor located between two main bearings, and the centrifugal compressor includes an impeller mounted to one end of the shaft. In one embodiment, the main bearings are lubricated by a portion of the process fluid so that the only fluid in the sealed spaces is the process fluid. The turbocompressor can be used in a power-cycle system that includes a heat source and, optionally, an electrical generator.

Abstract: A turbocompressor for use with a process fluid and including an axial expansion turbine for expanding the process fluid and a centrifugal compressor for compressing the process fluid. The turbine and compressor share a common shaft, all of which can be housed by a common housing that encloses sealed spaces. The axial expansion turbine has a rotor located between two main bearings, and the centrifugal compressor includes an impeller mounted to one end of the shaft. In one embodiment, the main bearings are lubricated by a portion of the process fluid so that the only fluid in the sealed spaces is the process fluid. The turbocompressor can be used in a power-cycle system that includes a heat source and, optionally, an electrical generator.