WO2001065174A1 - Method and plant for generating thermoelectric power using two-phase fluid - Google Patents

Method and plant for generating thermoelectric power using two-phase fluid Download PDF

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Publication number
WO2001065174A1
WO2001065174A1 PCT/KR2001/000283 KR0100283W WO0165174A1 WO 2001065174 A1 WO2001065174 A1 WO 2001065174A1 KR 0100283 W KR0100283 W KR 0100283W WO 0165174 A1 WO0165174 A1 WO 0165174A1
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WO
WIPO (PCT)
Prior art keywords
line
steam
expander
liquid
noncondensed
Prior art date
Application number
PCT/KR2001/000283
Other languages
French (fr)
Inventor
Phil-Chan Rha
Nam-Sik Joo
Jin-Woong Choi
Hun-Kun Lim
Su-Youn Lee
Original Assignee
Rha Phil Chan
Joo Nam Sik
Choi Jin Woong
Lim Hun Kun
Lee Su Youn
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Rha Phil Chan, Joo Nam Sik, Choi Jin Woong, Lim Hun Kun, Lee Su Youn filed Critical Rha Phil Chan
Priority to AU2001237737A priority Critical patent/AU2001237737A1/en
Publication of WO2001065174A1 publication Critical patent/WO2001065174A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K21/00—Steam engine plants not otherwise provided for
    • F01K21/04—Steam engine plants not otherwise provided for using mixtures of steam and gas; Plants generating or heating steam by bringing water or steam into direct contact with hot gas
    • F01K21/047—Steam engine plants not otherwise provided for using mixtures of steam and gas; Plants generating or heating steam by bringing water or steam into direct contact with hot gas having at least one combustion gas turbine
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D1/00—Non-positive-displacement machines or engines, e.g. steam turbines
    • F01D1/02—Non-positive-displacement machines or engines, e.g. steam turbines with stationary working-fluid guiding means and bladed or like rotor, e.g. multi-bladed impulse steam turbines
    • F01D1/04—Non-positive-displacement machines or engines, e.g. steam turbines with stationary working-fluid guiding means and bladed or like rotor, e.g. multi-bladed impulse steam turbines traversed by the working-fluid substantially axially
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K21/00—Steam engine plants not otherwise provided for
    • F01K21/005—Steam engine plants not otherwise provided for using mixtures of liquid and steam or evaporation of a liquid by expansion
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21D—NUCLEAR POWER PLANT
    • G21D5/00—Arrangements of reactor and engine in which reactor-produced heat is converted into mechanical energy
    • G21D5/04—Reactor and engine not structurally combined
    • G21D5/08—Reactor and engine not structurally combined with engine working medium heated in a heat exchanger by the reactor coolant
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00—Energy generation of nuclear origin

Definitions

  • the present invention relates to a method and a plant for generating power using two-phase fluid, and more particularly, the present invention relates to a method and a plant for generating power using two-phase fluid, by which wet steam serving as two-phase fluid is generated and then expanded m such a way as to allow shaft powei for a generator to be obtained, whereby power generating efficiency can be improved with the same scale of the plant .
  • two-phase fluid designates fluid in which gas and liquid are mixed with each other.
  • Two-phase fluid can have a single constituent element or two or more different kinds of constituent element.
  • the present invention concerns a technique of generating thermoelectric or atomic power using two-phase fluid.
  • FIG. 5 is a systematic view illustrating an entire construction of a thermoelectric power plant m accordance with the conventional art.
  • the conventional thermoelectric power plant comprises a power generating section 100, a piping section 200, a boiler 300, a condenser 400 and a circulating pump 500.
  • the power generating section 100 that is, electricity generating section, includes a generator 101, a shaft 102 which extends from the generator 101, and a turbine 103 which is mounted to the shaft 102.
  • the piping section 200 includes a feed line 201 and a discharge line 202 which are connected to the turbine 103, and a circulation line 203 which connects the feed line 201 and the discharge line 202 with each other.
  • the boiler 300 is arranged between the feed line 201 and the circulation line 203 in a manner such that combustion is implemented in the boiler 300.
  • the condenser 400 is arranged between the discharge line 202 and the circulation line 203 and includes a cooling water line 401 in a manner such that steam which is discharged from the turbine 103, can be cooled while passing through the cooling water line 401.
  • the circulating pump 500 is arranged in the course of the circulation line 203.
  • the boiler 300 is composed of a fuel tank 301 for supplying fuel, a combustor 302 into which air for aiding the fuel to be combusted flows, and a discharging port 303 for discharging exhaust gas.
  • a fuel tank 301 for supplying fuel
  • a combustor 302 into which air for aiding the fuel to be combusted flows
  • a discharging port 303 for discharging exhaust gas.
  • a superheated steam feeding step 601 the boiler 300 which is arranged between the feed line 201 and the circulation line 203, is actuated, liquid which is supplied into the boiler 300 through the circulation line 203, is changed to superheated steam, the superheated steam is fed into the turbine 103, and thereby the turbine 103 is rotated.
  • a superheated steam expanding step 602 the superheated steam which is fed into the turbine 103 as stated above, drives the turbine 103, and then, is discharged through the discharge line 202.
  • the lo ' temperature-liquid enters the circulation line 203.
  • the c onventional thermoelectric power plant which is constructed and operated as described above, suffers from defects in that, since exhaust gas of a high temperature, which is produced by combustion inside the boiler 300, is discharged to the atmosphere as it is, power generating efficiency cannot but be deteriorated when considering energy inputted to the boiler 300.
  • the turbine 103 since the superheated steam which is discharged from the boiler 300, has an extremely high temperature, the turbine 103 should be made of material having a high heat resistance, whereby a manufacturing cost of the thermoelectric power plant cannot be increased. Moreover, because the exhaust gas which is produced by combustion inside the boiler 300, is directly discharged to the atmosphere, the likelihood cf exhaust gas to severely pollute air, is raised.
  • an object of the present invention is to provide a method and a plant for generating power using two-phase fluid, by which fuel is combusted with the aid of compressed air to produce high pressure combustion gas, the high pressure combustion gas is mixed with water to generate wet steam serving as two-phase fluid, the wet steam is fed into an expander to allow shaft power to be obtained, and then, noncondensed gas is introduced into a noncondensed-gas compressor to undergo phase change from gas to liquid, whereby, as thermal energy including sensible heat and latent heat, which is owned by the wet steam, is converted into a kinetic energy so as to allow the shaft power to be obtained, power generating efficiency can be maximized.
  • Another object of the present invention is to provide a method and a plant for generating power using two-phase fluid, by which wet steam is circulated in sequence into an expander and a noncondensed-gas compressor m a manner such that latent heat which is owned by the wet steam, can be sufficiently utilized, and exhaust gas and water vapor are brought into direct contact with each other m a manner such that exhaust gas discharge can be minimized.
  • Another object of the present invention is to provide a method and a plant for generating power using two-phase fluid, n which a temperature of wet steam is dropped to a lower temperature at the same time when the wet steam is expanded in a manner such that an expander, a noncondensed-gas compressor and respective lines can be made of a material having a low heat resistance, whereby choice for the material of the expander, noncondensed-gas compressor and respective lines is enlarged.
  • Another object of the present invention is to provide a method and a plant for generating power using two-phase fluid, m which wet steam is condensed while passing through an expander and a noncondensed-gas compressor m a manner such that a conventional condenser is not needed, whereby a cost which is required for mounting and actuating the condenser, can be saved.
  • Yet still another object of the present invention is to provide a method and a plant for generating power using two-phase fluid, in which power is generated by directly expanding cooling water of an atomic reactor, whereby power generating efficiency can be improved m an atomic power plant.
  • thermoelectric power using two-phase fluid comprising: an initial staring step of initially actuating a start section and supplying compressed air of a high pressure into a combustor; a combustion gas producing step of combusting fuel with the aid of the compressed air of the high pressure, which is supplied into the combustor, and thereby producing combustion gas of a high pressure; a wet steam generating step of mixing heated combustion gas of the high pressure with water at the same time when the heated combustion gas of the high pressure flows into a mixer and thereby generating wet steam of a high pressure; an expander actuating step of feeding, through a first line, wet steam which is outputted from the mixer, into ar expander, and thereby rotating the expander by virtue of expansion of the wet steam; a first steam-liquid separating step of guiding wet steam which is discharged from the expander and partially ch nged to a liquid phase, into a first steam- liquid separator, and
  • a plant for generating thermoelectric power using two-phase fluid comprising: a first air compressor, an expander and a noncondensed-gas compressor mounted m sequence to a shaft which extends from a generator; an air suction line connected to an entrance of the first air compressor in a manner such that outside air can be sucked into the first air compressor through the air suction line; a first line connecting an exit of the first air compressor and an entrance of the expander with each other, the first line having arranged in the course thereof a comoustor which is coupled with a fuel tank, and a mixer; a second line connecting an exit of the expander and an entrance of the noncondensed-gas compressor with each other, the second line having arranged in the course thereof a first steam-liquid separator; a third line connected to an exit of the noncondensed-gas compressor, the third line having arranged in the coarse thereof a second steam- liquid separator frc ⁇ whicr exhaust gas ana liquid are separately discharge ⁇ ;
  • a first vaive is arranged m the course of the fourth line between the liquid discharging ports of the first and second steam-liquid separators, and a second valve is arranged in the course of the fourth line between the circulating pump and the mixer.
  • a method for generating atomic power using two-phase fluid comprising: an initial starting step of actuating a start section, supplying compressed air of a high pressure into a starting expander, and thereby rotating a shaft of a generator and at the same time rotating a main expander and a noncondensed-gas compressor; a main expander actuating step of directly feeding cooling water of a high temperature, which is heated in an atomic reactor, through a first line into the main expander, and thereby rotating the main expander by virtue of expansion of the cooling water of the high temperature; a steam-liquid separating step of guiding fluid including steam and liquid, which is discharged from the main expander, into a steam-liquid separator, and thereby introducing steam through a second line into the noncondensed-gas compressor and re-mputtmg liquid through a fourth line into the atomic reactor; a noncondensed-gas compressor actuating step of compressing the steam which is discharged from the
  • a plant for generating atomic power using two-phase fluid comprising: a starting expander, a main expander and a noncondensed-gas compressor mounted in sequence to a shaft which extends from a generator; an air suction line connected to an entrance of the starting expander, the air suction line having arranged in the course thereof a start section which possesses an air compressor, a compressed air tank and a valve; an air discharge line connected to an exit of the starting expander; a first line connecting an entrance of the main expander and an atomic reactor with each other n a manner such that cooling water of a high temperature can be directly fed from the atomic reactor into the main expander; a second line connecting an exit of the mam expander and an entrance of the noncondensed-gas compressor with each other, the second line having arranged in the course thereof a steam-liquid separator; a third line connecting an exit of the noncondensed-gas compressor and the atomic reactor with each other; and a fourth
  • FIG. 1 is a systematic view illustrating an entire construction of a thermoelectric power plant m accordance with a first embodiment of the present invention
  • FIG. 2 is a flow chart for explaining a thermoelectric power generating method according to the first embodiment of the present invention
  • FIG. 3 is a systematic view illustrating an entire construction of an atomic power plant in accordance with a second embodiment of the present invention
  • FIG. 4 is a flow chart for explaining an atomic power generating method according to the second embodiment of the present invention
  • FIG. 5 is a systematic view illustrating an entire construction of a thermoelectric power plant m accordance with the conventional art.
  • FIG. 6 is a flow chart for explaining a thermoelectric power generating method according to the conventional art.
  • FIG. 1 is a systematic view illustrating an entire construction of a thermoelectric power plant in accordance with a first embodiment of the present invention .
  • the thermoelectric power plant includes a first air compressor 112, an expander 113 and a noncondensed-gas compressor 114 which are mounted in sequence to a shaft 111 which extends from a generator 11.
  • the thermoelectric power plant further includes an air suction line 12, a first line 13, a second line 14, a third line 15 and a fourth line 16.
  • the air suction line 12 is connected to an entrance of the first air compressor 112 m a manner such that outside air can be sucked into the first air compressor 112 through the air suction line 12.
  • the first line 13 connects an exit of the first air compressor 112 and an entrance of the expander 113 with each other.
  • the first line 13 has arranged in the course thereof a combustor 132 which is coupled with a fuel tank 131, and a mixer 133.
  • the second line 14 connects an exit of the expander 113 and an entrance of the noncondensed-gas compressor 114 with each other.
  • the second line 14 has arranged in the course thereof a first steam-liquid separator 141.
  • the third line 15 is connected to an exit of tne noncondensed-gas compressor 114.
  • the third line 15 has arranged in the course thereof a second steam-liquid separator 151 from which exhaust gas and liquid are separately discharged.
  • the fourth line 16 connects the mixer 133 and liquid discharging ports of the first and second steam-liquid separators 141 and 151.
  • the fourth line 16 has arranged m the course thereof a circulating pump 161 and a refilling water valve 162.
  • a start section 17 is arranged m the course of the first line 13 which connects the exit of the first air compressor 112 and the combustor 132 with each other.
  • the start section 17 has a second air compressor 171, a compressed air tank 172 and a valve 173.
  • a first valve 163 is arranged m the course of the fourth line 16 between the liquid discharging ports of the first and second steam-liquid separators 1*41 and 151
  • a second valve 164 is arranged in the course of the fourth line 16 between the circulating pump 161 and the mixer 133.
  • thermoelectric power generating method employing the thermoelectric power plant constructed as mentioned above will be described with reference to FIGs. 1 and 2.
  • an initial staring step 21 the start section 17 is initially actuated, and compressed air of a high pressure is supplied through the second air compressor 171 and the compressed air tank 172 into the combustor 132.
  • a combustion gas producing step 22 fuel is combusted with the aid of the compressed air of the high pressure, which is supplied into the combustor 132, and thereby combustion gas of a high pressure is produced.
  • a wet steam generating step 23 heated combustion gas of the high pressure is mixed with water at the same time when the heated combustion gas of the high pressure flows into the mixer 133, and thereby wet steam of a high pressure is generated.
  • an expander actuating step 24 wet steam of the high pressure, which serves as two-phase fluid, is fe ⁇ through the first line 13 into the expander 113, and thereby the expander 113 is rotated by virtue of expansion of the wet steam. Then, the shaft 111 which extends from the generator 11, is rotated, and the wet steam is partially condensed.
  • a first steam-liquid separating step 25 wet steam which is discharged from the expander 113 and partially changed to a liqui ⁇ phase, is guided into the first steam-liquid separator 141, and then steam is introduced through the second line 14 into the noncondensed-gas compressor 114 and liquid is re-mputted through the fourth line 16 into the mixer 133.
  • a noncondensed-gas compressor actuating step 26 the steam which is discharged from the first steam-liqui ⁇ separator 141 and introduced through the second line 14 into the noncondensed-gas compressor 114, is compressed to an atmospheric pressure.
  • a second steam-liquid separating step 2 n fluid including gas and liquid, which is discharged from the noncondensed-gas compressor 114 and nearly changed to a liquid phase, is re-guided through the third line 15 into the second steam-liquid separator 151, and thereby gas is discharged to the outside and liquid is re-mputted through the fourth line 16 into the mixer 133.
  • a compressed air creating step 28 actuation of the start section 17 is interrupted, and at the same time, compressed air is continuously created in the first air compressor 112 which is mounted to the shaft 111.
  • the wet steam of the high temperature is constituted by combustion gas of the high temperature and water vapor which are mixed with each other
  • the wet steam is expanded.
  • the wet steam rotates the shaft 111, partially loses its energy, and then, experiences a phase change from gas to liquid.
  • thermal energy that is, latent heat which is owned by the wet steam, is converted into kinetic energy for rotating the shaft 111.
  • the combustor 132 which is arranged the course of the first line 13
  • combustion gas which is produced by the combustion
  • the mixer 133 to convert water into water vapor.
  • wet steam in which combustion gas and the water vapor are mixed with each other, is generated. Since most of thermal energy which is owne ⁇ by the wet steam, is converted into kinetic energy, waste of combustion heat is minimized, and thereby power generating efficiency can be maximized with the same combustion heat.
  • FIG. 3 is a systematic view illustrating an entire construction of an atomic power plant in accordance with a second embodiment of the present invention.
  • the atomic power plant according to this second embodiment of the present invention includes a starting expander 312, a ma expander 313 and a noncondensed-gas compressor 314 which are mounted sequence to a shaft 311 which extends from a generator 31.
  • the atomic power plant further includes an air suction line 32, an air discharge line 33, a first line 34, a second line 35, a third line 36 and a fourth line 37.
  • the air suction line 32 is connected to an entrance of the starting expander 312.
  • the air suction line 32 has arranged m the course tnereof a start section 321 which possesses an air compressor 321a, a compressed air tank 321b and a valve 321c.
  • the air discharge line 33 is connected to an exit of the starting expander 312.
  • the first line 34 connects an entrance of the mam expander 313 and an atomic reactor 341 with each other in a manner such that cooling water of a high temperature can be directly fed from the atomic reactor 341 into the ma expander 313.
  • the second line 35 connects an exit of the mam expander 313 and an entrance of the noncondensed-gas compressor 314 with each other.
  • the second line 35 has arranged in the course thereof a steam-liquid separator 351.
  • the third line 36 connects an exit of the noncondensed-gas compressor 314 and the atomic reactor 341 with each other.
  • the fourth line 37 connects a liquid discharging port of the steam- liquid separator 351 and the atomic reactor 341 with each other.
  • the fourth line 37 has arranged m the course thereof a circulating pump 371.
  • the start section 321 is actuated, and compressed air of a high pressure is supplied through the air compressor 321a and the compressed air tank 321b into the starting expander 312.
  • the shaft 311 of the generator 31 is rotated, and at the same time, the mam expander 313 and the noncondensed-gas compressor 314 are rotated.
  • a mam expander actuating step 42 cooling water of a high temperature, which is heated in the atomic reactor 341, is directly fed through the first line 34 into the mam expander 313, and thereby the mam expander 313 is rotated by virtue of expansion of the cooling water of the high temperature.
  • the shaft 311 is rotated.
  • a steam-liquid separating step 43 fluid including steam and liquid, which is discharged from the mam expander 313, is guided into the steam-liquid separator 351, and thereby steam is introduced through the second line 35 into the noncondensed-gas compressor 314 and liquid is re-mputted through the fourth line 37 into the atomic reactor 341.
  • a noncondensed-gas compressor actuating step 44 the steam which is discharged from the steam-liquid separator 351 and introduced through the second line 35 into the noncondensed-gas compressor 314, is compressed.
  • a cooling water collecting step 45 cooling water which is changed to a liquid phase m the noncondensed-gas compressor 314 and discharged from the noncondensed-gas compressor 314, is re-mputted through the third line 36 into the atomic reactor 341.
  • a cooling water heating step 46 heat which is created m the atomic reactor 341, is applied to the re-mputted cooling water having a low temperature, and thereby the cooling water having the low temperature is changed to cooling water of a high temperature.
  • the cooling water of the high temperature is fed into the mam expander 313, the cooling water is expanded.
  • the cooling water rotates the shaft 311.
  • the cooling water expe d iences a phase change through two times.
  • the c o oling water performs a work of rotating the shaft 311. That is to say, as wet steam is condensed, thermal energy, that is, latent heat which is owned by the wet stea , is converted into Kinetic energy for rotating the shat ⁇ 311.
  • the method and plant for generating power using two-phase fluid provides advantages m that, since wet steam serving as two-phase fluid is generated and then expanded in such a way as to allow shaft power for a generator to be obtained, power generating efficiency can be improved with the same scale of the plant.
  • an expander, a noncondensed-gas compressor and respective lines can be made of a material which has a low heat resistance and is inexpensive, a manufacturing cost of the power generating plant can be reduced.

Abstract

Disclosed are a method and a plant for generating thermoelectric or atomic power using two-phase fluid. A first air compressor, an expander and a noncondensed-gas compressor are mounted to a shaft of a generator. A first line connects the first air compressor and the expander, and has a combustor which is coupled with a fuel tank, and a mixer. A second line connects the expander and the noncondensed-gas compressor, and has a first steam-liquid separator. A third line is connected to the noncondensed-gas compressor, and has a second steam-liquid separator. A fourth line connects the mixer and liquid discharging ports of the first and second steam-liquid separators, and has a circulating pump and a refilling water valve. A start section is arranged in the course of the first line, and has a second air compressor, a compressed air tank and a valve.

Description

METHOD AND PLANT FOR GENERATING THERMOELECTRIC POWER USING TWO-PHASE FLUID
Technical Field
The present invention relates to a method and a plant for generating power using two-phase fluid, and more particularly, the present invention relates to a method and a plant for generating power using two-phase fluid, by which wet steam serving as two-phase fluid is generated and then expanded m such a way as to allow shaft powei for a generator to be obtained, whereby power generating efficiency can be improved with the same scale of the plant .
Background Art
Generally, two-phase fluid designates fluid in which gas and liquid are mixed with each other. Two-phase fluid can have a single constituent element or two or more different kinds of constituent element. In this connection, the present invention concerns a technique of generating thermoelectric or atomic power using two-phase fluid.
FIG. 5 is a systematic view illustrating an entire construction of a thermoelectric power plant m accordance with the conventional art. The conventional thermoelectric power plant comprises a power generating section 100, a piping section 200, a boiler 300, a condenser 400 and a circulating pump 500. The power generating section 100, that is, electricity generating section, includes a generator 101, a shaft 102 which extends from the generator 101, and a turbine 103 which is mounted to the shaft 102. The piping section 200 includes a feed line 201 and a discharge line 202 which are connected to the turbine 103, and a circulation line 203 which connects the feed line 201 and the discharge line 202 with each other. The boiler 300 is arranged between the feed line 201 and the circulation line 203 in a manner such that combustion is implemented in the boiler 300. The condenser 400 is arranged between the discharge line 202 and the circulation line 203 and includes a cooling water line 401 in a manner such that steam which is discharged from the turbine 103, can be cooled while passing through the cooling water line 401. The circulating pump 500 is arranged in the course of the circulation line 203.
In particular, the boiler 300 is composed of a fuel tank 301 for supplying fuel, a combustor 302 into which air for aiding the fuel to be combusted flows, and a discharging port 303 for discharging exhaust gas. Hereinafter, an operating procedure of the conventional thermoelectric power plant constructed as mentioned above will be described with reference to FIG. 6.
First, in a superheated steam feeding step 601, the boiler 300 which is arranged between the feed line 201 and the circulation line 203, is actuated, liquid which is supplied into the boiler 300 through the circulation line 203, is changed to superheated steam, the superheated steam is fed into the turbine 103, and thereby the turbine 103 is rotated. In a superheated steam expanding step 602, the superheated steam which is fed into the turbine 103 as stated above, drives the turbine 103, and then, is discharged through the discharge line 202. In a condensing step 603, lo*; pressure-steam which is discharged through the discharge line 202, is introduced into the condenser 400 and is changed therein to low temperature-liquid. In ^ low temperature-liquid circulating step 604, the lo ' temperature-liquid enters the circulation line 203. However, the conventional thermoelectric power plant which is constructed and operated as described above, suffers from defects in that, since exhaust gas of a high temperature, which is produced by combustion inside the boiler 300, is discharged to the atmosphere as it is, power generating efficiency cannot but be deteriorated when considering energy inputted to the boiler 300.
Also, due to the fact that the low temperature and low pressure-steam which is discharged through the discharge line 202, is changed to the low temperature- liquid while passing through the condenser 40C, because energy is partially lost by cooling water wr,ιch flows through the cooling water line 401, waste cf a great amount of energy is provoked.
Further, since the superheated steam which is discharged from the boiler 300, has an extremely high temperature, the turbine 103 should be made of material having a high heat resistance, whereby a manufacturing cost of the thermoelectric power plant cannot be increased. Moreover, because the exhaust gas which is produced by combustion inside the boiler 300, is directly discharged to the atmosphere, the likelihood cf exhaust gas to severely pollute air, is raised.
Disclosure of the Invention Accordingly, the present invention has been made in an effort to solve the problems occurring in the related art, and an object of the present invention is to provide a method and a plant for generating power using two-phase fluid, by which fuel is combusted with the aid of compressed air to produce high pressure combustion gas, the high pressure combustion gas is mixed with water to generate wet steam serving as two-phase fluid, the wet steam is fed into an expander to allow shaft power to be obtained, and then, noncondensed gas is introduced into a noncondensed-gas compressor to undergo phase change from gas to liquid, whereby, as thermal energy including sensible heat and latent heat, which is owned by the wet steam, is converted into a kinetic energy so as to allow the shaft power to be obtained, power generating efficiency can be maximized.
Another object of the present invention is to provide a method and a plant for generating power using two-phase fluid, by which wet steam is circulated in sequence into an expander and a noncondensed-gas compressor m a manner such that latent heat which is owned by the wet steam, can be sufficiently utilized, and exhaust gas and water vapor are brought into direct contact with each other m a manner such that exhaust gas discharge can be minimized.
Another object of the present invention is to provide a method and a plant for generating power using two-phase fluid, n which a temperature of wet steam is dropped to a lower temperature at the same time when the wet steam is expanded in a manner such that an expander, a noncondensed-gas compressor and respective lines can be made of a material having a low heat resistance, whereby choice for the material of the expander, noncondensed-gas compressor and respective lines is enlarged. Another object of the present invention is to provide a method and a plant for generating power using two-phase fluid, m which wet steam is condensed while passing through an expander and a noncondensed-gas compressor m a manner such that a conventional condenser is not needed, whereby a cost which is required for mounting and actuating the condenser, can be saved.
Another object of the present invention is to provide a method and a plant for generating power using two-phase fluid, in which exhaust gas works in a state wherein it is mixed with water vapor immediately after it is produced oy combustion of fuel, ana then, is finally discharged to the outside m a state wherein various pollutants which are contained m the exhaust gas, are filtered. Still another object of the present invention is to provide a method and a plant for generating power using two-phase fluid, ιr which, m an initial stage, a generator is starteα using separately compressed air, whereby quick startability ^s accomplished. Yet still another object of the present invention is to provide a method and a plant for generating power using two-phase fluid, in which power is generated by directly expanding cooling water of an atomic reactor, whereby power generating efficiency can be improved m an atomic power plant.
According to one aspect of the present invention, there is provided a method for generating thermoelectric power using two-phase fluid, comprising: an initial staring step of initially actuating a start section and supplying compressed air of a high pressure into a combustor; a combustion gas producing step of combusting fuel with the aid of the compressed air of the high pressure, which is supplied into the combustor, and thereby producing combustion gas of a high pressure; a wet steam generating step of mixing heated combustion gas of the high pressure with water at the same time when the heated combustion gas of the high pressure flows into a mixer and thereby generating wet steam of a high pressure; an expander actuating step of feeding, through a first line, wet steam which is outputted from the mixer, into ar expander, and thereby rotating the expander by virtue of expansion of the wet steam; a first steam-liquid separating step of guiding wet steam which is discharged from the expander and partially ch nged to a liquid phase, into a first steam- liquid separator, and thereby introducing steam through a second line into a noncondensed-gas compressor and re-mputtmg liquid through a fourth line into the mixer; a noncondensed-gas compressor actuating step cf compressing the steam which is discharged from the first steam-^ιqu-.α separator and introduced through the second line into the noncondensed- gas compressor, to an atmospheric pressure; a second steam-liquid separating step of re-guidmg, through a third line, fluid including steam and liquid, which is discharged from the noncondensed-gas compressor and nearly changed to a liquid phase, into a second steam-liquid separator, and thereby discharging gas to the outside and re-mputting liquid through the fourth line into the mixer; and a compressed air creating step of interrupting actuation of the start section and at the same time continuously creating compressed air m an air compressor which is mounted to a shaft.
According to another aspect of the present invention, there is provided a plant for generating thermoelectric power using two-phase fluid, comprising: a first air compressor, an expander and a noncondensed-gas compressor mounted m sequence to a shaft which extends from a generator; an air suction line connected to an entrance of the first air compressor in a manner such that outside air can be sucked into the first air compressor through the air suction line; a first line connecting an exit of the first air compressor and an entrance of the expander with each other, the first line having arranged in the course thereof a comoustor which is coupled with a fuel tank, and a mixer; a second line connecting an exit of the expander and an entrance of the noncondensed-gas compressor with each other, the second line having arranged in the course thereof a first steam-liquid separator; a third line connected to an exit of the noncondensed-gas compressor, the third line having arranged in the coarse thereof a second steam- liquid separator frc~ whicr exhaust gas ana liquid are separately dischargeα; a fourth line connecting the mixer and liquid discharging ports of the first and second steam-liquid separators, the fourth line having arranged m the course thereof a circulating pump and a refilling water valve; and a start section arranged m tre course of the first line whicr connects the exit of the first air compressor and the combustor with each other, the start section having a second air compressor, a compressed air tank and a valve.
According to another aspect of f-e present invention, a first vaive is arranged m the course of the fourth line between the liquid discharging ports of the first and second steam-liquid separators, and a second valve is arranged in the course of the fourth line between the circulating pump and the mixer.
According to still another aspect of the present invention, there is provided a method for generating atomic power using two-phase fluid, comprising: an initial starting step of actuating a start section, supplying compressed air of a high pressure into a starting expander, and thereby rotating a shaft of a generator and at the same time rotating a main expander and a noncondensed-gas compressor; a main expander actuating step of directly feeding cooling water of a high temperature, which is heated in an atomic reactor, through a first line into the main expander, and thereby rotating the main expander by virtue of expansion of the cooling water of the high temperature; a steam-liquid separating step of guiding fluid including steam and liquid, which is discharged from the main expander, into a steam-liquid separator, and thereby introducing steam through a second line into the noncondensed-gas compressor and re-mputtmg liquid through a fourth line into the atomic reactor; a noncondensed-gas compressor actuating step of compressing the steam which is discharged from the steam- liquid separator and introduced through the second line into the noncondensed-gas compressor; a cooling water collecting step of re-inputting cooling water which is changed to a liquid phase n the noncondensed-gas compressor and discharged from the noncondensed-gas compressor, through a third line into the atomic reactor; and a cooling water heating step of applying heat which is created in the atomic reactor, to the re-mputted cooling water having a low temperature, and thereby changing the cooling water having the low temperature to cooling water of a high temperature.
According to yet still another aspect of the present invention, there is provided a plant for generating atomic power using two-phase fluid, comprising: a starting expander, a main expander and a noncondensed-gas compressor mounted in sequence to a shaft which extends from a generator; an air suction line connected to an entrance of the starting expander, the air suction line having arranged in the course thereof a start section which possesses an air compressor, a compressed air tank and a valve; an air discharge line connected to an exit of the starting expander; a first line connecting an entrance of the main expander and an atomic reactor with each other n a manner such that cooling water of a high temperature can be directly fed from the atomic reactor into the main expander; a second line connecting an exit of the mam expander and an entrance of the noncondensed-gas compressor with each other, the second line having arranged in the course thereof a steam-liquid separator; a third line connecting an exit of the noncondensed-gas compressor and the atomic reactor with each other; and a fourth line connecting a liquid discharging port of the steam-liquid separator and the atomic reactor with each other, the fourth line having arranged ιr the course thereof a circulating pump.
Brief Description of the Drawings
The above objects, and other features and advantages of the present invention will become more apparent after a reading of the following detailed description when taken m conjunction with the drawings, m which:
FIG. 1 is a systematic view illustrating an entire construction of a thermoelectric power plant m accordance with a first embodiment of the present invention;
FIG. 2 is a flow chart for explaining a thermoelectric power generating method according to the first embodiment of the present invention;
FIG. 3 is a systematic view illustrating an entire construction of an atomic power plant in accordance with a second embodiment of the present invention;
FIG. 4 is a flow chart for explaining an atomic power generating method according to the second embodiment of the present invention; FIG. 5 is a systematic view illustrating an entire construction of a thermoelectric power plant m accordance with the conventional art; and
FIG. 6 is a flow chart for explaining a thermoelectric power generating method according to the conventional art.
Best Mode for Carrying Out the Invention
Reference will now be made in greater detail to a preferred embodiment of the invention, an example of which is illustrated m the accompanying drawings. Wherever possible, the same reference numerals will be used throughout the drawings and the description to refer to the same or like parts.
FIG. 1 is a systematic view illustrating an entire construction of a thermoelectric power plant in accordance with a first embodiment of the present invention .
The thermoelectric power plant according to this first embodiment of the present invention includes a first air compressor 112, an expander 113 and a noncondensed-gas compressor 114 which are mounted in sequence to a shaft 111 which extends from a generator 11. The thermoelectric power plant further includes an air suction line 12, a first line 13, a second line 14, a third line 15 and a fourth line 16. The air suction line 12 is connected to an entrance of the first air compressor 112 m a manner such that outside air can be sucked into the first air compressor 112 through the air suction line 12. The first line 13 connects an exit of the first air compressor 112 and an entrance of the expander 113 with each other. The first line 13 has arranged in the course thereof a combustor 132 which is coupled with a fuel tank 131, and a mixer 133. The second line 14 connects an exit of the expander 113 and an entrance of the noncondensed-gas compressor 114 with each other. The second line 14 has arranged in the course thereof a first steam-liquid separator 141. The third line 15 is connected to an exit of tne noncondensed-gas compressor 114. The third line 15 has arranged in the course thereof a second steam-liquid separator 151 from which exhaust gas and liquid are separately discharged. The fourth line 16 connects the mixer 133 and liquid discharging ports of the first and second steam-liquid separators 141 and 151. The fourth line 16 has arranged m the course thereof a circulating pump 161 and a refilling water valve 162.
In particular, a start section 17 is arranged m the course of the first line 13 which connects the exit of the first air compressor 112 and the combustor 132 with each other. The start section 17 has a second air compressor 171, a compressed air tank 172 and a valve 173. Also, a first valve 163 is arranged m the course of the fourth line 16 between the liquid discharging ports of the first and second steam-liquid separators 1*41 and 151, and a second valve 164 is arranged in the course of the fourth line 16 between the circulating pump 161 and the mixer 133.
Hereinafter, a thermoelectric power generating method employing the thermoelectric power plant constructed as mentioned above will be described with reference to FIGs. 1 and 2.
First, m an initial staring step 21, the start section 17 is initially actuated, and compressed air of a high pressure is supplied through the second air compressor 171 and the compressed air tank 172 into the combustor 132. In a combustion gas producing step 22, fuel is combusted with the aid of the compressed air of the high pressure, which is supplied into the combustor 132, and thereby combustion gas of a high pressure is produced. In a wet steam generating step 23, heated combustion gas of the high pressure is mixed with water at the same time when the heated combustion gas of the high pressure flows into the mixer 133, and thereby wet steam of a high pressure is generated. In an expander actuating step 24, wet steam of the high pressure, which serves as two-phase fluid, is feα through the first line 13 into the expander 113, and thereby the expander 113 is rotated by virtue of expansion of the wet steam. Then, the shaft 111 which extends from the generator 11, is rotated, and the wet steam is partially condensed. In a first steam-liquid separating step 25, wet steam which is discharged from the expander 113 and partially changed to a liquiα phase, is guided into the first steam-liquid separator 141, and then steam is introduced through the second line 14 into the noncondensed-gas compressor 114 and liquid is re-mputted through the fourth line 16 into the mixer 133. In a noncondensed-gas compressor actuating step 26, the steam which is discharged from the first steam-liquiα separator 141 and introduced through the second line 14 into the noncondensed-gas compressor 114, is compressed to an atmospheric pressure. In a second steam-liquid separating step 2n , fluid including gas and liquid, which is discharged from the noncondensed-gas compressor 114 and nearly changed to a liquid phase, is re-guided through the third line 15 into the second steam-liquid separator 151, and thereby gas is discharged to the outside and liquid is re-mputted through the fourth line 16 into the mixer 133. Thereafter, a compressed air creating step 28, actuation of the start section 17 is interrupted, and at the same time, compressed air is continuously created in the first air compressor 112 which is mounted to the shaft 111.
Specifically, in the expander actuating step 24, due to the fact that the wet steam of the high temperature is constituted by combustion gas of the high temperature and water vapor which are mixed with each other, at the same time when the wet steam is fed into the expander 113, the wet steam is expanded. By this, the wet steam rotates the shaft 111, partially loses its energy, and then, experiences a phase change from gas to liquid. In other words, as a portion of the wet steam which is a gaseous status, is liquefied, thermal energy, that is, latent heat which is owned by the wet steam, is converted into kinetic energy for rotating the shaft 111. Steam which is not condensed in the expander 113, is introduced into the noncondensed-gas compressor 114 after passing through the first steam-liquid separator 141. The steam which is introduced into the noncondensed-gas compressor 114, is compressed to the atmospheric pressure and thereby experiences the phase change. That is to say, as another portion of tne wet steam which is in a gaseous status, is liquefied, thermal energy, that is, sensible neat and latent heat , men are owned by the wet steam, are converted into kinetic energy for rotating tne shaft 111.
After the fuel is combusted with the aid of the compressed air the combustor 132 which is arranged the course of the first line 13, combustion gas which is produced by the combustion, is inputted to the mixer 133 to convert water into water vapor. According to this, wet steam in which combustion gas and the water vapor are mixed with each other, is generated. Since most of thermal energy which is owneα by the wet steam, is converted into kinetic energy, waste of combustion heat is minimized, and thereby power generating efficiency can be maximized with the same combustion heat.
In the meanwhile, in the second steam-liquid separating step 27, exhaust gas and liquid which are discharged from the noncondensed-gas compressor 114, are separated from each other. Immediately before the exhaust gas is discharged to the outside, since the exhaust gas is maintained in a state wherein the exhaust gas is mixed with liquid, various pollutants which are contained in the exhaust gas, are effectively captured by the liquid. Hence, when the exhaust gas is discharged to the outside m this state, it is possible to minimize air pollution.
FIG. 3 is a systematic view illustrating an entire construction of an atomic power plant in accordance with a second embodiment of the present invention. The atomic power plant according to this second embodiment of the present invention includes a starting expander 312, a ma expander 313 and a noncondensed-gas compressor 314 which are mounted sequence to a shaft 311 which extends from a generator 31. The atomic power plant further includes an air suction line 32, an air discharge line 33, a first line 34, a second line 35, a third line 36 and a fourth line 37. The air suction line 32 is connected to an entrance of the starting expander 312. The air suction line 32 has arranged m the course tnereof a start section 321 which possesses an air compressor 321a, a compressed air tank 321b and a valve 321c. The air discharge line 33 is connected to an exit of the starting expander 312. The first line 34 connects an entrance of the mam expander 313 and an atomic reactor 341 with each other in a manner such that cooling water of a high temperature can be directly fed from the atomic reactor 341 into the ma expander 313. The second line 35 connects an exit of the mam expander 313 and an entrance of the noncondensed-gas compressor 314 with each other. The second line 35 has arranged in the course thereof a steam-liquid separator 351. The third line 36 connects an exit of the noncondensed-gas compressor 314 and the atomic reactor 341 with each other. The fourth line 37 connects a liquid discharging port of the steam- liquid separator 351 and the atomic reactor 341 with each other. The fourth line 37 has arranged m the course thereof a circulating pump 371.
Hereinafter, an atomic power generating method employing the atomic power plant constructed as mentioned above will be described with reference to FIGs. 3 and 4.
First, in an initial starting step 41, the start section 321 is actuated, and compressed air of a high pressure is supplied through the air compressor 321a and the compressed air tank 321b into the starting expander 312. Thereby, the shaft 311 of the generator 31 is rotated, and at the same time, the mam expander 313 and the noncondensed-gas compressor 314 are rotated. In a mam expander actuating step 42, cooling water of a high temperature, which is heated in the atomic reactor 341, is directly fed through the first line 34 into the mam expander 313, and thereby the mam expander 313 is rotated by virtue of expansion of the cooling water of the high temperature. By rotation of the ma expander 313, the shaft 311 is rotated. Then, the cooling water of the high temperature is condensed into cooling water of a low temperature. In a steam-liquid separating step 43, fluid including steam and liquid, which is discharged from the mam expander 313, is guided into the steam-liquid separator 351, and thereby steam is introduced through the second line 35 into the noncondensed-gas compressor 314 and liquid is re-mputted through the fourth line 37 into the atomic reactor 341. In a noncondensed-gas compressor actuating step 44, the steam which is discharged from the steam-liquid separator 351 and introduced through the second line 35 into the noncondensed-gas compressor 314, is compressed. In a cooling water collecting step 45, cooling water which is changed to a liquid phase m the noncondensed-gas compressor 314 and discharged from the noncondensed-gas compressor 314, is re-mputted through the third line 36 into the atomic reactor 341. In a cooling water heating step 46, heat which is created m the atomic reactor 341, is applied to the re-mputted cooling water having a low temperature, and thereby the cooling water having the low temperature is changed to cooling water of a high temperature.
In particular, in the mam expander actuating step 42, at the same time when the cooling water of the high temperature is fed into the mam expander 313, the cooling water is expanded. By this, the cooling water rotates the shaft 311. Thereafter, as the cooling water is re- condensed, the cooling water expediences a phase change through two times. Namely, as a portion of the cooling water of the high temperature which is a liquid status, is expanded and vaporized, the cooling water performs a work of rotating the shaft 311. That is to say, as wet steam is condensed, thermal energy, that is, latent heat which is owned by the wet stea , is converted into Kinetic energy for rotating the shat^ 311.
Steam which is not condensed m the mam expander 313, is introduced into the noncondensed-gas compressor 314 after passing through the steam-liquid separator 351. The steam which is introduced into the noncondensed-gas compressor 314, is compressed and thereby experiences the phase change from steam to liquid.
Industrial Applicability
As a result, the method and plant for generating power using two-phase fluid, according to the present invention, provides advantages m that, since wet steam serving as two-phase fluid is generated and then expanded in such a way as to allow shaft power for a generator to be obtained, power generating efficiency can be improved with the same scale of the plant.
Also, due to the fact that latent heat which is owned by the wet steam carrying exhaust gas, is sufficiently utilized, exhaust gas discharge is minimized, whereby it is possible to prevent exhaust gas from causing environmental pollution.
Further, because an expander, a noncondensed-gas compressor and respective lines can be made of a material which has a low heat resistance and is inexpensive, a manufacturing cost of the power generating plant can be reduced.
Moreover, as it is not necessary to employ a conventional condenser, a cost which is required for mounting and actuating the condenser, can be saved.
In addition, by the fact that exhaust gas is discharged to the outside a state wherein various pollutants which are contained m the exhaust gas, are filtered by the medium of liquid, it is possible to avoid environmental pollution.
Besides, since, m an initial stage, a generator is started using separately compressed air, quick startability is accomplished.
Furthermore, because power is generated by directly expanding cooling water of an atomic reactor, power generating efficiency can be improved an atomic power plant .

Claims

Claims
1. A method for generating thermoelectric power using two-phase fluid, comprising: an initial staring step of initially actuating a start section and supplying compressed air of a high pressure into a combustor; a combustion gas producing step of combusting fuel with the aid of the compressed air of the high pressure, which is supplied into the combustor, and thereby producing combustion gas of a high pressure; a wet steam generating step of mixing heated combustion gas of the high pressure with water at the same time when the heated combustion gas of the high pressure flows into a mixer and thereby generating wet steam of a high pressure; an expander actuating step of feeding, through a first line, wet steam which is outputted from the mixer, into an expander, and thereby rotating the expander by virtue of expansion of the wet steam; a first steam-liquid separating step of guiding wet steam which is discharged from the expander and partially changed to a liquid phase, into a first steam-liquid separator, and thereby introducing steam through a second line into a noncondensed-gas compressor and re-mputtmg liquid through a fourth line into the mixer; a noncondensed-gas compressor actuating step of compressing the steam which is discharged from the first steam-liquid separator and introduced through the second line into the noncondensed-gas compressor, to an atmospheric pressure; a second steam-liquid separating step of re-guid g, through a third line, fluid including steam and liquid, which is discharged from the noncondensed-gas compressor and nearly changed to a liquid phase, into a second steam- liquid separator, and thereby discharging gas to the outside and re- puttmg liquid through the fourth line into the mixer; and a compressed air creating step of interrupting actuation of the start section and at the same time continuously creating compressed air in an air compressor which is mounted to a shaft.
2. A method for generating atomic power using two-phase fluid, comprising: an initial starting step of actuating a start section, supplying compressed air of a high pressure into a starting expander, and thereby rotating a shaft of a generator and at the same time rotating a mam expander and a noncondensed-gas compressor; a mam expander actuating step of directly feeding cooling water of a high temperature, which is heated in an atomic reactor, through a first line into the mam expander, and thereby rotating the mam expander by virtue of expansion of the cooling water of the high temperature; a steam-liquid separating step of guiding fluid including steam and liquid, which is discharged from the ma expander, into a steam-liquid separator, and thereby introducing steam through a second line into the noncondensed-gas compressor and re-mputtmg liquid through a fourth line into the atomic reactor; a noncondensed-gas compressor actuating step of compressing the steam which is discharged from the steam- liquid separator and introduced through the second line into the noncondensed-gas compressor; a cooling water collecting step of re-mputtmg cooling water which is changed to a liquid phase in the noncondensed-gas compressor and discharged from the noncondensed-gas compressor, through a third line into the atomic reactor; and a cooling water heating step of applying heat which is created m the atomic reactor, to the re- mputted cooling water having a low temperature, and thereby changing the cooling water having the lov, temperature to cooling water of a high temperature.
3. A plant for generating thermoelectric power using two-phase fluid, comprising: a first air compressor, an expander and a noncondensed-gas compressor mounted in sequence to a shaft which extenαs from a generator; an air suction line connected to an entrance of the first air compressor in a manner such that outside air car be sucked into the first air compressor through the air suction line; a first line connecting an exit of the first air compressor and an entrance of the expander with each other, the first line having arranged m the course thereof a combustor which is coupled with a fuel tank, and a mixer; a second line connecting an exit of the expander and an entrance of the noncondensed-gas compressor with each other, the second line having arranged in the course thereof a first steam-liquid separator; a third line connected to an exit of the noncondensed-gas compressor, the third line having arranged in the course thereof a second steam-liquid separator from which exhaust gas and liquid are separately discharged; a fourth line connecting the mixer and liquid discharging ports of the first and second steam-liquid separators, the fourth line having arranged in the course thereof a circulating pump and a refilling water valve; and a start section arranged in the course of the first line which connects the exit of the first air compressor and the combustor with each other, the start section having a second air compressor, a compressed air tank and a valve.
4. The plant as claimed in claim 4, wherein a first valve is arranged m tre course of the fourth line between the liquid discharging ports of the first and second steam-liquid separators, and a second valve is arranged in the course of the fourth line between the circulating pump and the mixer.
5. A plant for generating atomic power using two- phase fluid, comprising: a starting expander, a mam expander and a noncondensed-gas compressor mounted in sequence to a shaft which extends from a generator; an air suction line connected to an entrance of the starting expander, the air suction line having arranged in the course thereof a start section which possesses an air compressor, a compressed air tank and a valve; an air discharge line connected to an exit of the starting expander; a first line connecting an entrance of the mam expander and an atomic reactor with each other m a manner such that cooling water of a high temperature can be directly fed from the atomic reactor into the mam expander; a second line connecting an exit of the mam expander and an entrance of the noncondensed-gas compressor with each other, the second line having arranged m the course thereof a steam-liquid separator; a third line connecting an exit of the noncondensed- gas compressor and the atomic reactor with each other; and a fourth line connecting a liquid discharging port of the steam-liquid separator and the atomic reactor with each other, the fourth line having arranged m the course thereof a circulating pump.
PCT/KR2001/000283 2000-02-28 2001-02-26 Method and plant for generating thermoelectric power using two-phase fluid WO2001065174A1 (en)

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