EP0316132A2 - Steam generator - Google Patents
Steam generator Download PDFInfo
- Publication number
- EP0316132A2 EP0316132A2 EP88310476A EP88310476A EP0316132A2 EP 0316132 A2 EP0316132 A2 EP 0316132A2 EP 88310476 A EP88310476 A EP 88310476A EP 88310476 A EP88310476 A EP 88310476A EP 0316132 A2 EP0316132 A2 EP 0316132A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- water
- burner
- combustion chamber
- air
- generator
- Prior art date
- Legal status (The legal status 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 status listed.)
- Ceased
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B27/00—Instantaneous or flash steam boilers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B1/00—Methods of steam generation characterised by form of heating method
- F22B1/22—Methods of steam generation characterised by form of heating method using combustion under pressure substantially exceeding atmospheric pressure
- F22B1/26—Steam boilers of submerged-flame type, i.e. the flame being surrounded by, or impinging on, the water to be vaporised, e.g. water in sprays
Definitions
- the present invention is an instant steam generator.
- the invention provides a compact unit having no boiler which can be used on site to generate various qualities of steam for a variety of applications.
- the invention has particular application for curing prestressed and precast concrete and generally for the standard curing of concrete products such as blocks or pipes.
- the concrete curing process generates heat, which tends to warm up the inside of concrete products.
- a desirable feature for an instant steam generator is that is has a low carbon monoxide output.
- a low carbon monoxide output is essential where the steam generator is operated in an enclosed facility, for example, in a concrete products plant or in a mine, in order to meet typical government regulations for worker exposure to carbon monoxide.
- the invention employs a unique combustion chamber and water vaporization combination whereby the combustion chamber is cooled by a surrounding jacket of circulating water, and the outflow of water from the jacket is used as the source of water to be vaporized by combustion gases from a burner located at one end of the chamber.
- the present arrangement differs from that previously known, for example as described in U.S. Patent No. 4,211,071-Wyatt, July 8, 1980, by introducing a spray of water countercurrently to the stream of combustion gases exiting the combustion chamber. This arrangement creates a great deal of turbulence in the area surrounding the water spray thus ensuring instant and thorough vaporization of the spray by the combustion gases.
- prior devices e.g.
- a steam generator comprising a water jacketed combustion chamber having an inlet and an outlet for the circulation of water through the jacket and having first and second ends.
- a burner is positioned in the first end of the combustion chamber.
- Means are provided for delivering pressurized air and fuel to the burner so that the burner may produce a flame extending toward the second end of the combustion chamber.
- a water spray nozzle is positioned at the second end of the combustion chamber remote from the burner flame, said nozzle being connected to the outlet of the jacket and being adapted to spray water countercurrently into a stream of hot gases from the burner flame thereby creating steam without quenching the flame.
- a discharge conduit is connected to the second end of the combustion chamber for conveying the steam so generated.
- the present invention employs a unique arrangement in which the water is sprayed countercurrently to the flow of hot gases, and the water spray nozzle can be pointed directly at the burner.
- This arrangement is contrary to conventional teachings which specify that the water should be sprayed away from the flame to avoid flame quenching.
- the steam generator of the present invention comprises a combustion chamber 10 having a burner 11 at one end and a water spray nozzle 12 at the other end.
- the chamber 10 is provided with a water jacket 15 (Fig. 2) having a jacket inlet 16 near the lower end of the chamber 10 and a jacket outlet 17 near the upper or burner end of the chamber 10.
- Water is circulated throught the jacket 15 at a rate of circulation governed by water pressure controls 19 which are readily available and which are inserted into the water inlet line 20.
- Water exiting the jacket 15 proceeds through the jacket outlet 17 and a pipe 22 to the water spray nozzle 12 which is in turn located within a steam outlet line or discharge conduit 24.
- the combustion chamber 10 is sized to enable complete combustion of the fuel by the flame of the burner 11 within the confines of the chamber 10.
- a zone 25 in the lower portion ofthe combustion chamber 10 for the hot exhaust gases of combustion with fuel combustion occurring to the fullest extent allowed by the mechanics of the burner 11 in a zone 26 in the upper portion of the chamber 10 about the flame.
- the burner 11 is an oil burner or preferably a burner of the type which burns a pressurized gaseous fuel mixture such as air and natural gas or propane. Accordingly, the burner 11 is provided with an inlet conduit 30 comprising a larger diameter inlet air pipe 31 for pressurized air, into which is joined a fuel pipe 32 of a lesser diameter. The junction point 33 of the pipes 31 and 32 is just upstream of a venturi 35. The gaseous fuel mixture is throughly mixed by flowing through the venturi 35 thereby ensuring even combustion at the burner head 11 and affording good control of the heat output therefrom.
- a pressurized gaseous fuel mixture such as air and natural gas or propane. Accordingly, the burner 11 is provided with an inlet conduit 30 comprising a larger diameter inlet air pipe 31 for pressurized air, into which is joined a fuel pipe 32 of a lesser diameter.
- the junction point 33 of the pipes 31 and 32 is just upstream of a venturi 35.
- the gaseous fuel mixture is throughly mixed by flowing through the venturi 35
- the air supplied to the inlet air pipe 31 is pressurized in a conventional manner by drawing air in through a filter 40 and passing it through a blower 41 or other well known compression means.
- Pressure in the inlet air pipe 31 may be regulated by use of an appropriate air pressure valve 42, and pressure in the fuel pipe 32 may be controlled by a conventional fuel valve 43.
- the valves 42 and 43 By adjustment of the valves 42 and 43, the pressure and composition of the fuel mixture can be varied as desired.
- Ignition of the burner 11 may conveniently be accomplished by use of a pilot 49 located adjacent the head of the burner 11.
- the pilot 49 may receive a fuel mixture from feeder lines 50 and 51 taken from the main fuel pipe 32 and the inlet air pipe 31.
- the feeder lines 50 and 51 tap the main pipes 31 and 32 at points upstream of the respective valves 42 and 43.
- the feeder lines 50 and 51 are also provided with valves 53 and 54 so that the desired combustion gas mixture and pressure can be provided to the pilot 49.
- any of a number of different kinds of burners would be suitable for use in the present invention. Since the steam generated by the present device contains the exhaust from the burner 11, it may be particularly desirable in certain applications to choose a burner 11 which produces a low level of carbon monoxide. The low carbon monoxide level of the burner 11 will be retained during the steam generating process using the present device, because there is no flame quenching produced by the contercurrent spray of water from the nozzle 12. Likewise, the foregoing description of the fuel and air supply means is illustrative and may be varied with the type of burner used. It will also be apparent to those skilled in this art that central control means may be employed to coordinate the flows and relative pressures of the fuel, air and water streams for the overall system.
- steam is generated by the mixture of the water spray from the water spray nozzle 12 with the hot combustion gases produced by the burner 11 at the lower end of the combustion chamber 10.
- the spray from the water spray nozzle 12 By causing the spray from the water spray nozzle 12 to be directed countercurrently to the exhaust gases from the burner 11, instant vaporization of the water occurs due to the extreme turbulence and thorough mixing of the opposing streams. Turbulence and mixing of opposing streams may be modified by the insertion of baffles in the combustion chamber 10 and in the steam outlet line 24. The quality of the steam exiting through the steam outlet line 24 may be determined by adjusting the output of the burner 11 and the output of the water spray nozzle 12.
- the relative opposing pressures from the burner 11 and the spray nozzle 12 must be adjusted to enable steam to be generated in the manner described, that is, by vaporization of the water contacting the hot exhaust gases from the burner 11.
- the generation of relatively low pressure steam i.e. 5-20 psi, is accomplished using the invention wherein the water vaporization occurs virtually entirely within the outlet neck 59 located between the lower end of the combustion chamber 11 and the steam outlet line 24.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
Description
- The present invention is an instant steam generator. The invention provides a compact unit having no boiler which can be used on site to generate various qualities of steam for a variety of applications. For example, the invention has particular application for curing prestressed and precast concrete and generally for the standard curing of concrete products such as blocks or pipes. During curing of concrete products, it is desirable to maintain a uniform temperature throughout the concrete and to maintain the surface of the concrete moist. The concrete curing process generates heat, which tends to warm up the inside of concrete products. By stacking the concrete blocks or other items in a room and then subjecting them to steam, one simultaneously achieves the two objects of maintaining the blocks at a uniform curing temperature and maintaining them moist. By curing the blocks in this fashion, one can obtain, for example, a 28 day cured concrete strength in 24 hours.
- A desirable feature for an instant steam generator is that is has a low carbon monoxide output. A low carbon monoxide output is essential where the steam generator is operated in an enclosed facility, for example, in a concrete products plant or in a mine, in order to meet typical government regulations for worker exposure to carbon monoxide.
- The invention employs a unique combustion chamber and water vaporization combination whereby the combustion chamber is cooled by a surrounding jacket of circulating water, and the outflow of water from the jacket is used as the source of water to be vaporized by combustion gases from a burner located at one end of the chamber. The present arrangement differs from that previously known, for example as described in U.S. Patent No. 4,211,071-Wyatt, July 8, 1980, by introducing a spray of water countercurrently to the stream of combustion gases exiting the combustion chamber. This arrangement creates a great deal of turbulence in the area surrounding the water spray thus ensuring instant and thorough vaporization of the spray by the combustion gases. In prior devices, e.g. Wyatt, water flows through a jacket around the combustion chamber and is then discharged through an annulus around a flame-enclosing shield so that the water flows with the hot gases cocurrently through the combustion chamber. In practice, it has been found that this cocurrent flow of water about the flame leads to flame instability and quenching which causes the formation of unacceptably high levels of carbon monoxide in a poorly ventilated work area about the generator. By introducing the water spray in a region remote from the burner flame, the problem of flame quenching is eliminated. The use of the water cooled jacket for the chamber obviates the need to use refractory material to line the chamber and provides the added benefit of preheating the water for vaporization.
- In accordance with the present invention, there is provided a steam generator, comprising a water jacketed combustion chamber having an inlet and an outlet for the circulation of water through the jacket and having first and second ends. A burner is positioned in the first end of the combustion chamber. Means are provided for delivering pressurized air and fuel to the burner so that the burner may produce a flame extending toward the second end of the combustion chamber. A water spray nozzle is positioned at the second end of the combustion chamber remote from the burner flame, said nozzle being connected to the outlet of the jacket and being adapted to spray water countercurrently into a stream of hot gases from the burner flame thereby creating steam without quenching the flame. A discharge conduit is connected to the second end of the combustion chamber for conveying the steam so generated. Thus, the present invention employs a unique arrangement in which the water is sprayed countercurrently to the flow of hot gases, and the water spray nozzle can be pointed directly at the burner. This arrangement is contrary to conventional teachings which specify that the water should be sprayed away from the flame to avoid flame quenching.
- In fact, it has been found that by spraying water directly at the combustion gases coming from the burner flame, extremely efficient steam generation can be achieved. It is believed that this arrangement promotes turbulence between the water spray and the hot exhaust gases, thereby effecting an instant heat transfer to the water spray creating steam. It has been found, surprisingly, that steam generate in accordance with the invention does not result in flame quenching even when producing steam at pressures much higher than those achievable by prior devices. This result is obtained by introducing the water spray into a region of the device which is remote from the burner flame so that the water spray does not interfere with the combustion process at the burner. Since fuel combustion is not affected by the water spray in the present invention, a device equipped with an efficient burner may produce a sufficiently low level of carbon monoxide to be suitable for use in enclosed work areas.
- A preferred embodiment of the invention will hereinafter be described with reference being made to the drawings in which:
- Figure 1 is a perspective view of the generator partially exploded and partially broken away for clarity; and
- Figure 2 is a vertical sectional view of the combustion chamber and associated components.
- It should be appreciated that although the drawings show an arrangement suitable for a natural gas or propane burner, an oil burner can also be used with the invention by making appropriate changes to the air and fuel supply means known to those skilled in the art.
- The steam generator of the present invention comprises a
combustion chamber 10 having aburner 11 at one end and awater spray nozzle 12 at the other end. Thechamber 10 is provided with a water jacket 15 (Fig. 2) having ajacket inlet 16 near the lower end of thechamber 10 and ajacket outlet 17 near the upper or burner end of thechamber 10. Water is circulated throught thejacket 15 at a rate of circulation governed bywater pressure controls 19 which are readily available and which are inserted into thewater inlet line 20. Water exiting thejacket 15 proceeds through thejacket outlet 17 and apipe 22 to thewater spray nozzle 12 which is in turn located within a steam outlet line ordischarge conduit 24. Thecombustion chamber 10 is sized to enable complete combustion of the fuel by the flame of theburner 11 within the confines of thechamber 10. Indeed, as shown in Fig. 2, it is preferred to have azone 25 in the lower portion ofthecombustion chamber 10 for the hot exhaust gases of combustion with fuel combustion occurring to the fullest extent allowed by the mechanics of theburner 11 in azone 26 in the upper portion of thechamber 10 about the flame. - The
burner 11 is an oil burner or preferably a burner of the type which burns a pressurized gaseous fuel mixture such as air and natural gas or propane. Accordingly, theburner 11 is provided with aninlet conduit 30 comprising a larger diameterinlet air pipe 31 for pressurized air, into which is joined afuel pipe 32 of a lesser diameter. Thejunction point 33 of thepipes venturi 35. The gaseous fuel mixture is throughly mixed by flowing through theventuri 35 thereby ensuring even combustion at theburner head 11 and affording good control of the heat output therefrom. - The air supplied to the
inlet air pipe 31 is pressurized in a conventional manner by drawing air in through a filter 40 and passing it through ablower 41 or other well known compression means. Pressure in theinlet air pipe 31 may be regulated by use of an appropriateair pressure valve 42, and pressure in thefuel pipe 32 may be controlled by aconventional fuel valve 43. By adjustment of thevalves - Ignition of the
burner 11 may conveniently be accomplished by use of apilot 49 located adjacent the head of theburner 11. Thepilot 49 may receive a fuel mixture fromfeeder lines main fuel pipe 32 and theinlet air pipe 31. The feeder lines 50 and 51 tap themain pipes respective valves feeder lines valves pilot 49. - It will be apparent to the person skilled in this art that any of a number of different kinds of burners would be suitable for use in the present invention. Since the steam generated by the present device contains the exhaust from the
burner 11, it may be particularly desirable in certain applications to choose aburner 11 which produces a low level of carbon monoxide. The low carbon monoxide level of theburner 11 will be retained during the steam generating process using the present device, because there is no flame quenching produced by the contercurrent spray of water from thenozzle 12. Likewise, the foregoing description of the fuel and air supply means is illustrative and may be varied with the type of burner used. It will also be apparent to those skilled in this art that central control means may be employed to coordinate the flows and relative pressures of the fuel, air and water streams for the overall system. - In operation, steam is generated by the mixture of the water spray from the
water spray nozzle 12 with the hot combustion gases produced by theburner 11 at the lower end of thecombustion chamber 10. By causing the spray from thewater spray nozzle 12 to be directed countercurrently to the exhaust gases from theburner 11, instant vaporization of the water occurs due to the extreme turbulence and thorough mixing of the opposing streams. Turbulence and mixing of opposing streams may be modified by the insertion of baffles in thecombustion chamber 10 and in thesteam outlet line 24. The quality of the steam exiting through thesteam outlet line 24 may be determined by adjusting the output of theburner 11 and the output of thewater spray nozzle 12. The relative opposing pressures from theburner 11 and thespray nozzle 12 must be adjusted to enable steam to be generated in the manner described, that is, by vaporization of the water contacting the hot exhaust gases from theburner 11. The generation of relatively low pressure steam, i.e. 5-20 psi, is accomplished using the invention wherein the water vaporization occurs virtually entirely within theoutlet neck 59 located between the lower end of thecombustion chamber 11 and thesteam outlet line 24. - The principles of the invention as described may be utilized to generate steam of much higher pressure than heretofore was thought possible using a direct fired generating device. Thus, while the foregoing has disclosed a preferred embodiment, it is not intended that this disclosure be construed as restricting the scope of the invention which is defined in the following claims.
Claims (8)
a water jacketed combustion chamber having an inlet and an outlet for the circulation of water through the jacket and having first and second ends;
a burner positioned in the first end of the combustion chamber;
means for delivering pressurized air and fuel to the burner, so that the burner may produce a flame extending toward the second end of the combustion chamber;
a water spray nozzle positioned at the second end of the combustion chamber remote from the burner flame, and being adapted to spray water countercurrently into a stream of hot gases from the burner flame thereby creating steam without quenching the flame; and
a discharge conduit connected to the second end of the combustion chamber for conveying the steam so generated.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12001187A | 1987-11-12 | 1987-11-12 | |
US120011 | 1987-11-12 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0316132A2 true EP0316132A2 (en) | 1989-05-17 |
EP0316132A3 EP0316132A3 (en) | 1990-03-07 |
Family
ID=22387732
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP88310476A Ceased EP0316132A3 (en) | 1987-11-12 | 1988-11-08 | Steam generator |
Country Status (10)
Country | Link |
---|---|
EP (1) | EP0316132A3 (en) |
JP (1) | JPH067001B2 (en) |
KR (1) | KR890008509A (en) |
CN (1) | CN1015200B (en) |
AU (1) | AU606764B2 (en) |
BR (1) | BR8805886A (en) |
CA (1) | CA1267333A (en) |
IN (1) | IN168907B (en) |
PL (1) | PL275766A1 (en) |
ZA (1) | ZA888322B (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5461854A (en) * | 1993-07-07 | 1995-10-31 | Griffin, Jr.; Arthur T. | Combustor cooling for gas turbine engines |
US6176075B1 (en) | 1993-07-07 | 2001-01-23 | Arthur T. Griffin, Jr. | Combustor cooling for gas turbine engines |
WO2002065017A1 (en) * | 2001-02-13 | 2002-08-22 | Chang Gun Shin | Heat exchanging type boiler |
WO2009110841A1 (en) * | 2008-03-04 | 2009-09-11 | Safesam Ab | Device and method for producing a gaseous medium comprising steam |
RU2488903C1 (en) * | 2012-05-03 | 2013-07-27 | Рашид Зарифович Аминов | Combustion system of hydrogen in nuclear power plant cycle with temperature control of hydrogen-oxygen steam |
KR101381037B1 (en) * | 2012-10-05 | 2014-04-04 | 주식회사 동양매직 | Steam generating apparatus having the structure for preventing overheat of steam pipe |
RU2707182C1 (en) * | 2019-02-25 | 2019-11-25 | Рашид Зарифович Аминов | Method to increase power of double circuit npp by combining with hydrogen cycle |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH095002A (en) * | 1995-06-26 | 1997-01-10 | Nobuo Takeno | Disposable tape measure |
KR100524108B1 (en) * | 2002-05-29 | 2005-10-26 | 임호종 | Steam generating apparatus |
CN102519140B (en) * | 2011-12-27 | 2014-02-26 | 安徽合协生态环境科技有限公司 | Heat supplying device |
CN103363508A (en) * | 2012-04-06 | 2013-10-23 | 梁旭春 | Method for generating spraying type steam |
WO2015120755A1 (en) * | 2014-02-17 | 2015-08-20 | 王连山 | Thermal energy conversion device |
CN105003896B (en) * | 2015-08-05 | 2017-02-01 | 重庆市大为能源有限公司 | Vaporizer |
CN107269427A (en) * | 2017-06-16 | 2017-10-20 | 中创新核(北京)科技有限公司 | A kind of interior vapours synergy engine |
FI128005B (en) | 2018-07-05 | 2019-07-31 | Turf Gamechanger Oy | Lawn maintenance machine |
AU2020327907A1 (en) * | 2019-08-09 | 2022-03-03 | General Energy Recovery Inc. | Steam generator tool |
KR102326989B1 (en) | 2021-07-15 | 2021-11-16 | 벽산파워 주식회사 | Steam jet propulsion system |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE555026A (en) * | ||||
DE256576C (en) * | ||||
GB333922A (en) * | 1929-04-23 | 1930-08-25 | George Rolfe Stow | Improvements in or relating to steam power plants |
FR716929A (en) * | 1931-05-12 | 1931-12-30 | Process for producing a gaseous fluid under pressure | |
FR2016137A1 (en) * | 1968-08-16 | 1970-05-08 | Inst Voor Bewaring | |
US4288978A (en) * | 1978-05-19 | 1981-09-15 | Vapor Energy, Inc. | Vapor generator |
-
1988
- 1988-11-02 IN IN917/CAL/88A patent/IN168907B/en unknown
- 1988-11-07 AU AU24771/88A patent/AU606764B2/en not_active Ceased
- 1988-11-07 ZA ZA888322A patent/ZA888322B/en unknown
- 1988-11-08 EP EP88310476A patent/EP0316132A3/en not_active Ceased
- 1988-11-09 CN CN88107775A patent/CN1015200B/en not_active Expired
- 1988-11-09 CA CA000582607A patent/CA1267333A/en not_active Expired - Lifetime
- 1988-11-10 KR KR1019880014799A patent/KR890008509A/en not_active Application Discontinuation
- 1988-11-10 BR BR888805886A patent/BR8805886A/en unknown
- 1988-11-11 PL PL27576688A patent/PL275766A1/en unknown
- 1988-11-11 JP JP28661788A patent/JPH067001B2/en not_active Expired - Lifetime
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE555026A (en) * | ||||
DE256576C (en) * | ||||
GB333922A (en) * | 1929-04-23 | 1930-08-25 | George Rolfe Stow | Improvements in or relating to steam power plants |
FR716929A (en) * | 1931-05-12 | 1931-12-30 | Process for producing a gaseous fluid under pressure | |
FR2016137A1 (en) * | 1968-08-16 | 1970-05-08 | Inst Voor Bewaring | |
US4288978A (en) * | 1978-05-19 | 1981-09-15 | Vapor Energy, Inc. | Vapor generator |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5461854A (en) * | 1993-07-07 | 1995-10-31 | Griffin, Jr.; Arthur T. | Combustor cooling for gas turbine engines |
US5694761A (en) * | 1993-07-07 | 1997-12-09 | Griffin, Jr.; Arthur T. | Combustor cooling for gas turbine engines |
US6176075B1 (en) | 1993-07-07 | 2001-01-23 | Arthur T. Griffin, Jr. | Combustor cooling for gas turbine engines |
WO2002065017A1 (en) * | 2001-02-13 | 2002-08-22 | Chang Gun Shin | Heat exchanging type boiler |
US6938582B2 (en) | 2001-02-13 | 2005-09-06 | Chang Gun Shin | Heat exchanging type boiler |
WO2009110841A1 (en) * | 2008-03-04 | 2009-09-11 | Safesam Ab | Device and method for producing a gaseous medium comprising steam |
RU2488903C1 (en) * | 2012-05-03 | 2013-07-27 | Рашид Зарифович Аминов | Combustion system of hydrogen in nuclear power plant cycle with temperature control of hydrogen-oxygen steam |
KR101381037B1 (en) * | 2012-10-05 | 2014-04-04 | 주식회사 동양매직 | Steam generating apparatus having the structure for preventing overheat of steam pipe |
RU2707182C1 (en) * | 2019-02-25 | 2019-11-25 | Рашид Зарифович Аминов | Method to increase power of double circuit npp by combining with hydrogen cycle |
Also Published As
Publication number | Publication date |
---|---|
JPH067001B2 (en) | 1994-01-26 |
KR890008509A (en) | 1989-07-10 |
ZA888322B (en) | 1989-08-30 |
AU2477188A (en) | 1989-05-18 |
JPH01159503A (en) | 1989-06-22 |
CA1267333A (en) | 1990-04-03 |
CN1033095A (en) | 1989-05-24 |
EP0316132A3 (en) | 1990-03-07 |
BR8805886A (en) | 1989-08-01 |
CN1015200B (en) | 1991-12-25 |
IN168907B (en) | 1991-07-06 |
AU606764B2 (en) | 1991-02-14 |
PL275766A1 (en) | 1989-07-24 |
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