Abstract: A suction pipe 200 of a centrifugal compressor 20, the centrifugal compressor 20 having a suction port 22 that is open to direct the working fluid to an impeller 21, the suction pipe 200 including a first opening portion 31 to be directly or indirectly connected to the suction port 22 and a second opening portion 32 positioned upstream from the first opening portion 31 in the flow direction of the working fluid. The second opening portion 32 is positioned below the first opening portion 31 in the vertical direction. The first opening portion 31 and the second opening portion 32 are open toward the same direction.

Abstract: A rotary machine 100 includes a bearing 10, a rotary shaft 20, a turbine wheel 30, a turbine nozzle 31, and a first cavity 40. The bearing 10 has a first end face 10a and a second end face 10b each positioned in the axial direction of the rotary shaft 20. The distance from the first end face 10a to the turbine wheel 30 is shorter than the distance from the second end face 10b to the turbine wheel 30. The first cavity 40 is positioned, in the axial direction of the rotary shaft 20, between a back surface 31b of the turbine nozzle 31 and the second end face 10b of the bearing 10 or between the back surface 31b of the turbine nozzle 31 and a space 11 that the second end face 10b of the bearing 10 faces. The first cavity 40 is present in the zone overlapping with the turbine nozzle 31 in a radial direction of the rotary shaft 20.

Abstract: A bearing structure (100) of the present disclosure includes: a rotating shaft (11); a dynamic bearing (12) including a foil (22) and a foil holder (21), the foil (22) being disposed around the rotating shaft (11) to constitute a bearing surface, the foil holder (21) holding the foil (22); a bearing support member (13) disposed around the dynamic bearing (12) to support the dynamic bearing (12); and at least one elastic body (14) disposed between the bearing support member (13) and the foil holder (21).

Abstract: A rotating machine (100) of the present disclosure includes: a bearing (10); a rotating shaft (20) having a hollow portion (21) included in a portion (20s) supported by the bearing (10); a fluid element (30) attached to one end portion of the rotating shaft (20); an introduction hole (22) that is provided, in the rotating shaft (20), on a back side of the fluid element (30), and that directs a working fluid to the hollow portion (21); and a discharge hole (23) that is provided, in the rotating shaft (20), at a position distant from the introduction hole (22) beyond the portion (20s) supported by the bearing (10), and that directs the working fluid to an outside of the hollow portion (21).

Abstract: A bearing structure includes a rotating shaft, a thrust collar, and a first thrust bearing. The rotating shaft has a central axis. The thrust collar is mounted on the rotating shaft. The first thrust bearing includes a first dynamic pressure generating mechanism. The first dynamic pressure generating mechanism faces the thrust collar. The relation Rt>Rf1 is satisfied, where Rt represents a length from the central axis to the outer circumferential edge of the thrust collar, and Rf1 represents a length from the central axis to the outer circumferential edge of the first dynamic pressure generating mechanism.

Abstract: A thermal electric power generator includes an evaporator, an expander, an electric generator, a condenser, and a pump. A working fluid used in the thermal electric power generator is an organic working fluid. The evaporator includes a heat exchanger, a bypass channel, and a flow rate adjustment mechanism. The bypass channel allows a heat medium to bypass the heat exchanger. The flow rate adjustment mechanism adjusts a flow rate of the heat medium to be supplied to the heat exchanger and a flow rate of the heat medium to be supplied to the bypass channel.

Abstract: A combined heat and power system is provided with a Rankine cycle passage, a heat medium passage, an evaporator, an expander, a condenser, a pump, a temperature sensor, a sensor, and a controller. The evaporator receives the heat from the heat medium to heat a working fluid. The temperature sensor detects the temperature of the heat medium after radiating heat for heating the working fluid. The sensor detects the pressure of the working fluid flowing between the outlet of the evaporator and the inlet of the expander. The controller adjusts the rotation speed of the pump based on the temperature detected by the temperature sensor, and in addition, adjusts the rotation speed of the expander based on the pressure detected by the sensor.

Abstract: An evaporator which heats working fluid with high-temperature fluid to evaporate the working fluid includes: a working fluid channel arranged in a flow direction of the high temperature fluid and through which the working fluid flows; and a temperature sensor provided for the working fluid channel. A part of the working fluid channel is exposed to outside of a housing of the evaporator, and the temperature sensor is provided in the part of the working fluid channel exposed to the outside of the housing of the evaporator in a region other than an inlet of the working fluid channel into which the working fluid flows from the outside of the evaporator and other than an outlet of the working fluid channel through which the working fluid flows out of the evaporator. The output value of the temperature sensor is used to adjust the temperature of the working fluid.

Abstract: A Rankine cycle apparatus includes a pump, an evaporator, an expander, a condenser, and an internal heat exchanger. The internal heat exchanger allows heat exchange to take place between a working fluid discharged from the expander and a working fluid discharged from the pump. A temperature of the working fluid at an inlet of the expander is set so that a temperature of the working fluid at an outlet of the expander be higher than a saturation temperature on a high-pressure side of the cycle.

Abstract: A Rankine cycle apparatus includes a pump, an evaporator, an expander, a condenser, and an internal heat exchanger. The internal heat exchanger allows heat exchange to take place between a working fluid discharged from the expander and a working fluid discharged from the pump. A temperature of the working fluid at an inlet of the expander is set so that a temperature of the working fluid at an outlet of the expander be higher than a saturation temperature on a high-pressure side of the cycle.

Abstract: A combined heat and power system is provided with a Rankine cycle passage, a heat medium passage, an evaporator, an expander, a condenser, a pump, a temperature sensor, a sensor, and a controller. The evaporator receives the heat from the heat medium to heat a working fluid. The temperature sensor detects the temperature of the heat medium after radiating heat for heating the working fluid. The sensor detects the pressure of the working fluid flowing between the outlet of the evaporator and the inlet of the expander. The controller adjusts the rotation speed of the pump based on the temperature detected by the temperature sensor, and in addition, adjusts the rotation speed of the expander based on the pressure detected by the sensor.

Abstract: An air cooling unit is an air cooling unit used in a Rankine cycle system and includes an expander and a condenser. The expander recovers energy from a working fluid by expanding the working fluid. The condenser cools the working fluid using air. The air cooling unit includes a heat-transfer reducer that reduces heat transfer between the expander and an air path.

Abstract: A valve device of a compressor of the present invention comprises a plate (17), a reed (21, 75), and a stopper (31), wherein the reed includes: an opening/closing section (60, 70), a fastened section (61, 71); and a joining section (62, 72), the opening/closing section, the fastened section and the joining section being arranged in a direction in which a symmetric axis extends; wherein in a portion of the joining section which is closer to the opening/closing section, a pair of portions (102, 112, 82, 86) of an outer periphery of each of one or two openings (63, 65, 73, 77) which are closest to both ends of the joining section are symmetric with respect to the symmetric axis so as to form a substantially-V-shape or substantially-U-shape, in a direction from the opening/closing section toward the fastened section; and in a portion of the joining section which is closer to the fastened section, a pair of portions (103, 113, 83, 87) of the outer periphery of each of one or two openings which are closest to the b

Abstract: An evaporator includes an introducing portion that introduces a heat source gas from a heat source gas pipe, a heat source gas passage through which the heat source gas introduced from the introducing portion flows, a heating portion that is disposed in the heat source gas passage and at which a working fluid is heated by the heat source gas, an increasing portion at which a cross-sectional area of the heat source gas passage gradually increases from an upstream side towards a downstream side in the heat source gas passage, and a flow regulating plate that is disposed on an upstream side from the heating portion in the heat source gas passage and that has a plurality of holes which allow the heat source gas to pass through the plurality of holes.

Abstract: Specific operation is executable in a Rankine-cycle power-generating apparatus. In the Rankine-cycle power-generating apparatus, a) in the specific operation, the control device adjusts the degree of opening of the opening/closing device so that the direct-current electric power absorbed by the electric power absorber approaches first electric power, or b) in the specific operation, the degree of opening of the opening/closing device is increased to the predetermined intermediate degree of opening so that the direct-current electric power absorbed by the electric power absorber falls within a predetermined range.

Abstract: A liquid pump in the present disclosure includes a pressure container, a shaft, a first bearing, a second bearing, a pump mechanism, and a thrust bearing. The internal space of the pressure container is partitioned into a high pressure side space and a low pressure side space. The shaft has a thrust supported face, one of both ends of the shaft is disposed in the high pressure side space, and the other of both ends of the shaft is disposed in the low pressure side space. The pump mechanism is disposed between the first bearing and the second bearing, and pumps liquid by rotation of the shaft. The thrust bearing is disposed to face the thrust supported face between the first bearing and the second bearing.

Abstract: A combined heat and power system according the present disclosure includes a Rankine cycle apparatus including an evaporator that heats a working fluid by heat exchange between the working fluid and a heat source medium, an expansion machine that converts expansion power of the working fluid into rotational power, and a condenser that cools the working fluid by heat exchange between the working fluid and a heat medium, and a thermal circuit for using the heat medium heated by the condenser. An expansion volume ratio of the expansion machine is equal to or less than an expansion ratio in a theoretical Rankine cycle determined based on a state of a temperature and a pressure of the working fluid at a discharge port of the expansion machine and a state of a temperature and a pressure of the working fluid at a suction port of the expansion machine.

Abstract: A thermal power generation apparatus includes a control circuit that selects a single operation mode from among a plurality of modes including a normal mode and a specific mode on the basis of a voltage in a commercial system. The normal mode is an operation mode in which alternating-current power output from an inverter is adjusted so that a direct-current voltage in a direct-current power line follows a target voltage. The specific mode is an operation mode in which direct-current power absorbed by an electric power absorber and/or the amount of heat per unit time supplied to a heat engine are/is adjusted so that the direct-current voltage follows the target voltage.

Abstract: An evaporator which heats working fluid with high-temperature fluid to evaporate the working fluid includes: a working fluid channel arranged in a flow direction of the high temperature fluid and through which the working fluid flows; and a temperature sensor provided for the working fluid channel. A part of the working fluid channel is exposed to outside of a housing of the evaporator, and the temperature sensor is provided in the part of the working fluid channel exposed to the outside of the housing of the evaporator in a region other than an inlet of the working fluid channel into which the working fluid flows from the outside of the evaporator and other than an outlet of the working fluid channel through which the working fluid flows out of the evaporator. The output value of the temperature sensor is used to adjust the temperature of the working fluid.

Abstract: An exhaust heat recovery apparatus includes an exhaust heat passage through which a first heat medium holding exhaust heat flows; a second heat medium passage through which the second heat medium, of which temperature is lower than that of the first heat medium, flows; a Rankine cycle which includes a pump, an evaporator, an expander, and a condenser and causes heat exchange at the evaporator between the first heat medium flowing through the exhaust heat passage and a working fluid, so that the working fluid is evaporated, the evaporated working fluid expands at the expander, and power is generated; and an exhaust heat recovery heat exchanger which causes heat exchange between the first heat medium flowing through the exhaust heat passage and the second heat medium flowing through the second heat medium passage, so that the second heat medium is heated and exhaust heat of the first heat medium is recovered.