A support structure for a condensation system is disclosed having a pair of tube bundles connected at its respective upper ends to steam distribution lines for introducing steam into the tube bundles. The lower ends of the tube bundles are connected to condensate collectors for receiving condensate from the tube bundles and the tube bundles are arranged in a V shape such that the steam distribution lines of a pair of tube bundles are further apart from one another than are the condensate collectors of the pair of tube bundles.

To improve the reliability of the Rankine cycle device using a sealed-type expansion machine, the Rankine cycle device 100 according to the present disclosure comprises a pump 1, a heater 2, an expansion machine 3, a radiator 5, and a cooling path 8. The expansion machine 3 comprises an expansion mechanism 11 for extracting a power from the working fluid, an electric power generator 12, a sealed container 10 containing the expansion mechanism 11 and the electric power generator 12, a first inlet 34a, a first outlet 35a, a second inlet 30a, and a second outlet 31a. The radiator 5 is connected to the pump 1 with a flow path to cool the working fluid drained from the second outlet 31a. The cooling path 8 which connects the first outlet 35a to the second outlet 30a has a cooler 4 to cool the working fluid drained from the first outlet 35a.

To improve the reliability of the Rankine cycle device using a sealed-type expansion machine, the Rankine cycle device 100 according to the present disclosure comprises a pump 1, a heater 2, an expansion machine 3, a radiator 5, and a cooling path 8. The expansion machine 3 comprises an expansion mechanism 11 for extracting a power from the working fluid, an electric power generator 12, a sealed container 10 containing the expansion mechanism 11 and the electric power generator 12, a first inlet 34a, a first outlet 35a, a second inlet 30a, and a second outlet 31a. The radiator 5 is connected to the pump 1 with a flow path to cool the working fluid drained from the second outlet 31a. The cooling path 8 which connects the first outlet 35a to the second outlet 30a has a cooler 4 to cool the working fluid drained from the first outlet 35a.

The present invention provides a power plant whose motive fluid is geothermal fluid, comprising: a high-pressure steam turbine to which geothermal fluid is supplied to produce power; a high-pressure condenser to which the geothermal fluid exhausted from the high-pressure turbine after being expanded therein is supplied and condensed, said high-pressure condenser being configured with a port through which non-condensable gases contained in the geothermal fluid supplied to the high-pressure turbine are extractable in an extraction process and further configured to use heat being released during condensation of the high-pressure steam turbine exhaust to vaporize the steam condensate produced therein for producing low pressure steam without non-condensable gases; and a low-pressure steam turbine for producing power from said low-pressure steam without non-condensable gases supplied from said high-pressure condenser.

A turbine bypass system comprises a bypass path which is selectively operable to deliver hot gases to a gas cooler and a pebble bed positioned in the bypass path upstream of the gas cooler. The pebble bed absorbs heat from the bypass gases and thereby reduces the temperature of the bypass gases prior to delivery of the bypass gases to the gas cooler.

A cogeneration power plant and a method for operating a cogeneration power plant are provided, with a working medium being additionally cooled by a suitable heat pump between an outlet of a thermal heating device and an inlet of a power generator of the cogeneration process. The thermal power obtained in this manner is again available for heating purposes within the heat cycle.

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.

A steam turbine plant is provided with: a plurality of steam turbines; a multistage pressure condenser composed of a plurality of condensers which are respectively provided below the respective steam turbines so as to correspond to the plurality of steam turbines, and in which steam which is discharged from the respective steam turbines is condensed and accommodated as condensate; and a steam extraction section which introduces some of the steam in the steam turbine into condensate of the condenser corresponding to the lowest-pressure steam turbine among the plurality of condensers.

A steam turbine plant is provided with: a plurality of steam turbines; a multistage pressure condenser composed of a plurality of condensers which are respectively provided below the respective steam turbines so as to correspond to the plurality of steam turbines, and in which steam which is discharged from the respective steam turbines is condensed and accommodated as condensate; and a steam extraction section which introduces some of the steam in the steam turbine into condensate of the condenser corresponding to the lowest-pressure steam turbine among the plurality of condensers.

A Steam power plant comprising a steam turbine (3) and a condenser (5), wherein the condenser (5) is disclosed, comprising a first heat sink being a ground heat exchanger (29) is connected to the condenser during times when ground temperature is lower than air temperature; and a second heat sink being an above-ground heat exchanger is connected to the condenser during times when ground temperature is not lower than air temperature.