Abstract: In one embodiment, a power generating system includes a cooling absorption tower configured to cause an absorption liquid to absorb carbon dioxide in atmosphere. The system further includes an evaporator configured to heat the absorption liquid to release the carbon dioxide and water vapor from the absorption liquid, and discharge the absorption liquid that has released the carbon dioxide and the water vapor, and a first gas including the carbon dioxide and the water vapor. The system further includes a turbine configured to be driven by a portion of the first gas. The system further includes a generator configured to be driven by the turbine. The system further includes a capturer configured to condense the water vapor included in a remaining portion of the first gas, and capture the carbon dioxide that is included in the remaining portion of the first gas and to be a capture target.

Abstract: In one embodiment, a power generating system includes a cooling absorption tower configured to cause an absorption liquid to absorb carbon dioxide in atmosphere. The system further includes an evaporator configured to heat the absorption liquid to release the carbon dioxide and water vapor from the absorption liquid, and discharge the absorption liquid that has released the carbon dioxide and the water vapor, and a first gas including the carbon dioxide and the water vapor. The system further includes a turbine configured to be driven by a portion of the first gas. The system further includes a generator configured to be driven by the turbine. The system further includes a capturer configured to condense the water vapor included in a remaining portion of the first gas, and capture the carbon dioxide that is included in the remaining portion of the first gas and to be a capture target.

Abstract: In one embodiment, a heat storage power generation system includes a heat storage including a heat storage material that stores heat, and configured to heat a heat transmitting fluid by the heat stored in the heat storage material. The system further includes a first heater provided in the heat storage, and configured to heat the heat storage material. The system further includes a power generator that generates power using the fluid heated by the heat storage. The heat storage includes an inlet to which the fluid is supplied when storing the heat in the heat storage material, and an outlet that discharges the fluid when storing the heat in the heat storage material. The first heater includes one or more heat generation sources disposed closer to an inlet side of the inlet and the outlet, and heats the heat storage material by heat generated from the heat generation sources.

Abstract: An axial flow turbine according to an embodiment includes: an outer casing; an inner casing provided inside the outer casing; a discharge pipe that is welded and joined to the outer casing and through which a working fluid discharged from the axial flow turbine flows; a sleeve that is provided inside the outer casing and the discharge pipe and guides the working fluid discharged from the axial flow turbine to the discharge pipe; a tubular member that is provided over an outer periphery of the sleeve inside the outer casing and the discharge pipe and covers an inner periphery side of a joint portion between the outer casing and the discharge pipe; an introduction port that introduces a cooling medium into a space demarcated by the outer casing, the discharge pipe, and the tubular member; and a discharge port that discharges the cooling medium introduced into the space.

Abstract: An axial flow turbine according to an embodiment includes: an outer casing; an inner casing provided inside the outer casing; a discharge pipe that is welded and joined to the outer casing and through which a working fluid discharged from the axial flow turbine flows; a sleeve that is provided inside the outer casing and the discharge pipe and guides the working fluid discharged from the axial flow turbine to the discharge pipe; a tubular member that is provided over an outer periphery of the sleeve inside the outer casing and the discharge pipe and covers an inner periphery side of a joint portion between the outer casing and the discharge pipe; an introduction port that introduces a cooling medium into a space demarcated by the outer casing, the discharge pipe, and the tubular member; and a discharge port that discharges the cooling medium introduced into the space.

Abstract: A turbine rotor assembly 10 comprises a turbine rotor and a plurality of moving blades 20 implanted in a circumferential direction of the rotor. A flow passage is formed between each of the moving blades 20 and a circumferentially adjacent moving blade 20. Each of the moving blades 20 comprises a suction side connecting member 22 protruded on a blade suction surface 21 and a pressure side connecting member 24 protruded on a blade pressure surface 23, wherein the suction side connecting member 22 of each of the moving blades 20 is configured to be connected with the pressure side connecting member 24 of the circumferentially adjacent moving blade 20 to form an intermediate connecting member 30 between the moving blade 20 and the circumferentially adjacent moving blade 20 during a rotation of the turbine rotor. A downstream side end edge 32 of the intermediate connecting member 30 is positioned at an upstream side of a throat S of the flow passage.

Abstract: In one embodiment, a calculation method of moisture loss in a steam turbine calculates first a wetness fraction at the inlet and outlet of each of stationary blade cascades and rotor blade cascades. Subsequently, the moisture loss is classified into (1) supersaturation loss, (2) condensation loss, (3) acceleration loss, (4) braking loss, (5) capture loss and (6) pumping loss, and a loss for calculation of the moisture loss is selected from the above losses (1) to (6) according to the wetness fraction of steam at the inlet and outlet of each blade cascade. An amount of each selected loss is calculated, and an amount of moisture loss at each blade cascade is calculated.

Abstract: In one embodiment, a calculation method of moisture loss in a steam turbine calculates first a wetness fraction at the inlet and outlet of each of stationary blade cascades and rotor blade cascades. Subsequently, the moisture loss is classified into (1) supersaturation loss, (2) condensation loss, (3) acceleration loss, (4) braking loss, (5) capture loss and (6) pumping loss, and a loss for calculation of the moisture loss is selected from the above losses (1) to (6) according to the wetness fraction of steam at the inlet and outlet of each blade cascade. An amount of each selected loss is calculated, and an amount of moisture loss at each blade cascade is calculated.

Abstract: A turbine rotor assembly 10 comprises a turbine rotor and a plurality of moving blades 20 implanted in a circumferential direction of the rotor. A flow passage is formed between each of the moving blades 20 and a circumferentially adjacent moving blade 20. Each of the moving blades 20 comprises a suction side connecting member 22 protruded on a blade suction surface 21 and a pressure side connecting member 24 protruded on a blade pressure surface 23, wherein the suction side connecting member 22 of each of the moving blades 20 is configured to be connected with the pressure side connecting member 24 of the circumferentially adjacent moving blade 20 to form an intermediate connecting member 30 between the moving blade 20 and the circumferentially adjacent moving blade 20 during a rotation of the turbine rotor. A downstream side end edge 32 of the intermediate connecting member 30 is positioned at an upstream side of a throat S of the flow passage.