阅读说明：本技术 一种太阳能驱动的可调性功冷联供系统及方法 (Solar-driven adjustable power-cooling combined supply system and method ) 是由 于泽庭 冯春雨 于 2020-05-25 设计创作，主要内容包括：本发明涉及一种太阳能驱动的可调性功冷联供系统及方法。抛物面槽式太阳能集热器的导热油出口与锅炉连接,锅炉的导热油出口与抛物面槽式太阳能集热器连接；锅炉的氨水工质出口与分离器连接,分离器与第一分流器连接,分离器与回热器连接,回热器的混合液出口与锅炉连接；第一分流器与汽轮机连接,汽轮机的乏汽出口与第三分流器连接,第三分流器与高压冷凝器的入口连接,高压冷凝器与回热器连接；第一分流器的气体出口与冷凝器连接,冷凝器与第二分流器连接,第二分流器的出口与第三分流器连接。通过第一分流器、第二分流器、第三分流器合理分流,可以使系统在四种运行模式下运行,即单独发电模式、单独制冷模式、功冷联供模式和增强发电模式。(The invention relates to a solar-driven adjustable power-cooling combined supply system and method. The heat conducting oil outlet of the parabolic trough type solar heat collector is connected with the boiler, and the heat conducting oil outlet of the boiler is connected with the parabolic trough type solar heat collector; an ammonia water working medium outlet of the boiler is connected with a separator, the separator is connected with a first flow divider, the separator is connected with a heat regenerator, and a mixed liquid outlet of the heat regenerator is connected with the boiler; the first flow divider is connected with a steam turbine, a dead steam outlet of the steam turbine is connected with a third flow divider, the third flow divider is connected with an inlet of a high-pressure condenser, and the high-pressure condenser is connected with a heat regenerator; the gas outlet of the first flow divider is connected with the condenser, the condenser is connected with the second flow divider, and the outlet of the second flow divider is connected with the third flow divider. The system can operate in four operation modes, namely an independent power generation mode, an independent refrigeration mode, a power-cooling combined supply mode and an enhanced power generation mode by reasonably distributing through the first shunt, the second shunt and the third shunt.)

1. The utility model provides a solar drive's adjustability merit cold joint confession system which characterized in that: the system comprises a parabolic trough type solar thermal collector, a boiler, a heat regenerator, a separator, a high-pressure condenser, a first flow divider, a steam turbine, a condenser, a second flow divider and a third flow divider;

the heat conducting oil outlet of the parabolic trough type solar heat collector is connected with the boiler, and the heat conducting oil outlet of the boiler is connected with the parabolic trough type solar heat collector;

an ammonia water working medium outlet of the boiler is connected with the separator, an ammonia-rich steam outlet of the separator is connected with the first flow divider, an ammonia-poor liquid outlet of the separator is connected with the heat regenerator, and a mixed liquid outlet of the heat regenerator is connected with the boiler;

the gas outlet of the first flow divider is connected with a steam turbine, the dead steam outlet of the steam turbine is connected with a third flow divider, the third flow divider is connected with the inlet of a high-pressure condenser, and the condensate outlet of the high-pressure condenser is connected with a heat regenerator;

the gas outlet of the first flow divider is connected with the condenser, the liquid outlet of the condenser is connected with the second flow divider, and the outlet of the second flow divider is connected with the third flow divider.

2. The solar driven adjustable power-cold combined supply system of claim 1, wherein: the system also comprises a first mixer and a first throttle valve, wherein a steam exhaust outlet of the steam turbine is connected with the first mixer, a poor ammonia solution outlet of the heat regenerator is connected with the first throttle valve, and the poor ammonia solution outlet of the first throttle valve is connected with the first mixer.

3. The solar driven adjustable power-cold combined supply system of claim 2, wherein: the liquid outlet of the second flow divider is connected with the evaporator, and the outlet of the evaporator is connected with the first mixer.

4. The solar driven adjustable power-cold combined supply system of claim 1, wherein: still include cooler, subcooler, the aqueous ammonia solution export of third shunt is connected with the subcooler, and the aqueous ammonia solution export of subcooler is connected with the cooler, and the condensate outlet of second shunt is connected with the heat transfer medium entry of cooler, and the aqueous ammonia solution export of cooler is connected with the subcooler, and the mixed liquid export of subcooler is connected with high-pressure condenser.

5. The solar driven adjustable power-cold combined supply system of claim 1, wherein: the device is characterized by further comprising a second mixer, the second mixer is arranged on a pipeline connected with the subcooler and the high-pressure condenser, an ammonia water solution outlet of the subcooler is connected with the second mixer, a heat exchange medium outlet of the cooler is connected with the second mixer, and a mixed liquid outlet of the second mixer is connected with the high-pressure condenser.

6. The solar driven adjustable power-cold combined supply system of claim 1, wherein: the condenser further comprises a second throttling valve, a liquid outlet of the condenser is connected with the second throttling valve, and a liquid outlet of the second throttling valve is connected with the second flow divider.

7. The solar driven adjustable power-cold combined supply system according to claim 4, wherein: the system comprises a boiler, an oil pump, a first working medium pump and a second working medium pump, wherein the inlet of the oil pump is connected with the boiler, the outlet of the oil pump is connected with a parabolic trough type solar heat collector, the inlet of the first working medium pump is connected with a high-pressure condenser, the outlet of the first working medium pump is connected with a heat regenerator, the inlet of the second working medium pump is connected with a cooler, and the outlet of the second working medium pump is connected with a subcooler.

8. A solar-driven adjustable power-cooling combined supply method is characterized in that: the solar-driven adjustable power-cooling combined supply system of any one of the application rights 1-7, wherein the power supply method comprises the following steps: the parabolic trough type solar thermal collector transfers solar heat to a heat transfer medium, the heat transfer medium enters a boiler to heat ammonia water, the ammonia water is evaporated and vaporized and enters a separator, the separator is divided into ammonia-rich steam and ammonia-poor solution, the ammonia-rich steam enters a steam turbine to do work after being divided by a first divider, exhaust steam obtained after the work is done enters a first mixer to be mixed with the ammonia-poor solution after being cooled by a heat regenerator and being reduced by a first throttle valve, the mixed ammonia water solution is guided to a high-pressure condenser by a third divider, enters the heat regenerator after being condensed, and returns to the boiler after being heated by the heat regenerator.

9. The method of claim 8, wherein the method further comprises: the cooling method comprises the following steps: the ammonia-rich steam of the first flow divider enters a condenser to be condensed to obtain liquid, the liquid sequentially enters a second throttle valve to be throttled and decompressed and then enters a second flow divider, the liquid is split by the second flow divider and then enters an evaporator to be evaporated, the evaporated gas is mixed with the ammonia-poor solution which is decompressed by the heat regenerator and the first throttle valve, the gas is split by a third flow divider and then enters a high-pressure condenser to be condensed, the condensed gas enters a heat regenerator to be heated, and the heated gas returns to a boiler;

or, the joint supply method comprises: the rich ammonia steam of first shunt gets into steam turbine and condenser respectively, exhaust steam after doing work in the steam turbine mixes in first blender with the poor ammonia solution after regenerator cooling and first choke valve step-down, the liquid that the condenser condenses and obtains gets into second choke valve throttle decompression back entering second shunt in proper order, get into the evaporimeter after the reposition of redundant personnel of second shunt and evaporate, the gas that the evaporation obtained gets into mixes in the first blender, the mixed liquid that first blender obtained gets into high pressure condenser after the reposition of redundant personnel of third shunt and condenses, get into the regenerator after the condensation and heat, return the boiler after the heating.

10. The method of claim 8, wherein the method further comprises: a method of enhancing power generation: the ammonia-rich steam of the first flow divider respectively enters a steam turbine and a condenser, the exhaust steam after acting in the steam turbine is mixed with the lean ammonia solution after being cooled down by a heat regenerator and being reduced by a first throttle valve, the mixed ammonia water solution is led to a subcooler by a third flow divider and then enters a cooler, the mixed ammonia water solution is cooled by cold energy generated by evaporation of the ammonia water solution after being reduced by a second throttle valve, the cooled ammonia water solution is pumped to intermediate pressure by a second working medium pump and is heated by the subcooler, then the cooled ammonia water solution enters a second mixer and is mixed with the ammonia steam from the cooler, the mixed solution enters a high-pressure condenser for condensation, and the condensed solution is pressurized by a first working medium pump and is heated by the heat regenerator and then returns to a boiler again.

Technical Field

The invention belongs to the technical field of power generation, and particularly relates to a solar-driven adjustable power-cooling combined supply system and method.

Background

The information in this background section is only for enhancement of understanding of the general background of the invention and is not necessarily to be construed as an admission or any form of suggestion that this information forms the prior art that is already known to a person of ordinary skill in the art.

Among renewable energy sources, solar energy is inexhaustible, safe and clean energy, a Parabolic Trough Solar Collector (PTSC) is a device for effectively collecting solar energy, the parabolic trough solar collector can convert solar energy with low heat flow density into energy of heat transfer media with high heat flow density, the maximum temperature of the heat transfer media can reach 400 ℃, and the collected energy can be used for power generation, refrigeration, seawater desalination and the like. However, the solar energy utilization has the disadvantages that the solar radiation intensity is unstable, and changes with day and night, weather and seasons, when the solar radiation intensity changes, the effective energy obtained by the solar heat collector changes, so that the input and output of the cooling system and the power supply system are mismatched, and the normal operation of cooling and power supply is influenced.

Disclosure of Invention

In view of the above problems in the prior art, an object of the present invention is to provide a solar-driven adjustable power-cooling combined supply system and method.

In order to solve the technical problems, the technical scheme of the invention is as follows:

in a first aspect, a solar-driven adjustable power-cooling combined supply system comprises a Parabolic Trough Solar Collector (PTSC), a boiler, a heat regenerator, a separator, a high-pressure condenser, a first splitter, a steam turbine, a condenser, a second splitter and a third splitter;

the heat conducting oil outlet of the parabolic trough type solar heat collector is connected with the boiler, and the heat conducting oil outlet of the boiler is connected with the parabolic trough type solar heat collector;

an ammonia water working medium outlet of the boiler is connected with the separator, an ammonia-rich steam outlet of the separator is connected with the first flow divider, an ammonia-poor liquid outlet of the separator is connected with the heat regenerator, and a mixed liquid outlet of the heat regenerator is connected with the boiler;

the gas outlet of the first flow divider is connected with a steam turbine, the dead steam outlet of the steam turbine is connected with a third flow divider, the third flow divider is connected with the inlet of a high-pressure condenser, and the condensate outlet of the high-pressure condenser is connected with a heat regenerator;

the gas outlet of the first flow divider is connected with the condenser, the liquid outlet of the condenser is connected with the second flow divider, and the outlet of the second flow divider is connected with the third flow divider.

The invention provides a solar-driven cooling combined supply system taking ammonia water as a refrigerant. The system can operate in four operation modes, namely an independent power generation mode, an independent refrigeration mode, a power and cold combined supply mode and a mode for enhancing generating capacity by utilizing refrigeration capacity through reasonable distribution of the first shunt, the second shunt and the third shunt.

In a second aspect, the solar-driven adjustable combined power and cooling method using the system includes that the parabolic trough-type solar collector transfers solar heat to a heat transfer medium, the heat transfer medium enters a boiler to heat ammonia water, the ammonia water is evaporated and vaporized and enters a separator, the heat transfer medium is divided into ammonia-rich steam and ammonia-poor solution in the separator, the ammonia-rich steam is divided by a first divider and then enters a turbine to do work, exhaust steam obtained after the work is done enters a first mixer to be mixed with the ammonia-poor solution after the heat regenerator is cooled down and the first throttle valve is cooled down, the mixed ammonia water solution is guided to a high-pressure condenser by a third divider, and then enters the heat regenerator after being condensed and then returns to the boiler after being heated by the heat regenerator.

The invention has the beneficial effects that:

(1) in the same system, the system can operate in four operation modes, namely an independent power generation mode, an independent refrigeration mode, a power-cooling combined supply mode and an enhanced power generation mode, by reasonably distributing through the first splitter, the second splitter and the third splitter.

(2) Under the power-cooling combined supply mode, the power-cooling ratio is variable, and the proper power-cooling ratio can be selected according to the requirement. The flow ratio of the ammonia-rich steam entering the steam turbine and the condenser is controlled through the flow divider, so that the ratio of the generated energy of the steam turbine to the refrigerating capacity of the refrigerating cycle can be changed. When the steam flow entering the steam turbine is zero, entering an independent refrigeration mode; and when the steam flow entering the condenser is zero, entering a single power generation mode. In summer, the requirement of cooling capacity is large, and the flow of the ammonia-rich steam entering the condenser can be increased through the flow divider, so that higher cooling capacity is obtained.

(3) The selection of the appropriate operating mode may be based on seasonal variations. The solar radiation energy has the characteristic of seasonal unevenness, the average solar radiation is strong in summer, the solar heat collector can receive more solar radiation energy, and the requirement for cold energy in summer is large, so that the cold energy can be produced while power generation is carried out by adopting a power-cold combined supply mode; the average solar radiation is weaker in winter, and no cold quantity is required, so that the cold quantity produced by refrigeration circulation can be used for cooling the dead steam at the outlet of the steam turbine, the back pressure of the steam turbine is reduced, the power generation efficiency is improved, and the generated energy is increased.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the invention and not to limit the invention.

FIG. 1 is a general system block diagram of the present invention;

FIG. 2 is a structural view of an individual power generation system of embodiment 1;

FIG. 3 is a view showing the construction of a separate refrigerating system of embodiment 2;

fig. 4 is a structural view of a combined cooling and power system of embodiment 3;

FIG. 5 is a structural view of an enhanced power generation system of embodiment 4;

the system comprises a parabolic trough solar thermal collector 1, a boiler 2, a heat regenerator 3, a heat regenerator 4, a separator 5, a first flow divider 6, a steam turbine 7, a condenser 8, a first throttle valve 9, a first mixer 10, a second throttle valve 11, a second flow divider 12, an evaporator 13, a first working medium pump 14, a high-pressure condenser 15, a second mixer 16, a third flow divider 17, a subcooler 18, a second working medium pump 19, a cooler 20 and an oil pump.

Detailed Description

It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

In a first aspect, a solar-driven adjustable power-cooling combined supply system comprises a Parabolic Trough Solar Collector (PTSC), a boiler, a heat regenerator, a separator, a high-pressure condenser, a first splitter, a steam turbine, a condenser, a second splitter and a third splitter;

the heat conducting oil outlet of the parabolic trough type solar heat collector is connected with the boiler, and the heat conducting oil outlet of the boiler is connected with the parabolic trough type solar heat collector;

an ammonia water working medium outlet of the boiler is connected with the separator, an ammonia-rich steam outlet of the separator is connected with the first flow divider, an ammonia-poor liquid outlet of the separator is connected with the heat regenerator, and a mixed liquid outlet of the heat regenerator is connected with the boiler;

the gas outlet of the first flow divider is connected with a steam turbine, the dead steam outlet of the steam turbine is connected with a third flow divider, the third flow divider is connected with the inlet of a high-pressure condenser, and the condensate outlet of the high-pressure condenser is connected with a heat regenerator;

the gas outlet of the first flow divider is connected with the condenser, the liquid outlet of the condenser is connected with the second flow divider, and the outlet of the second flow divider is connected with the third flow divider.

As shown in fig. 1, whether the ammonia-rich steam enters the turbine and the condenser can be adjusted by adjusting the first splitter, that is, the ammonia-rich steam can enter the turbine alone, the condenser alone, or both the turbine and the condenser. The dashed lines in fig. 1 indicate different ways of adjusting the connections or switching between the disconnections.

The disadvantage of solar energy utilization is that the intensity of solar radiation is unstable and varies with day and night, weather and seasons. The system and the method can realize the switching among different circulation modes (a cooling supply mode, a power supply mode, a combined supply mode and an enhanced power generation mode) so as to match the collected heat with the required amount. In summer, the average solar radiation intensity is high, the heat collector can collect more energy, meanwhile, the requirement for cold quantity in summer is high, at the moment, the circulation flow of the figure 4 is adopted, part of the rich ammonia steam at the outlet of the separator enters the steam turbine for power generation, and the other part of the rich ammonia steam enters the condenser and transmits the cold quantity to chilled water after condensation, throttling and evaporation, so that the combined power and cooling supply is realized, the proportion of the generated energy and the refrigerating capacity is adjustable, and when the cold quantity requirement is increased, more rich ammonia steam enters the condenser pipeline.

In spring and autumn, particularly in winter, the average solar radiation intensity is weaker, the heat collector has less heat collection amount and no cold requirement, the system shown in fig. 5 can be adopted, most of the ammonia-rich steam from the separator enters a steam turbine to generate power, a small part of the ammonia-rich steam enters a condenser, the ammonia-rich steam enters a low-pressure absorber to be vaporized after being throttled to the intermediate pressure by a second throttle valve, and the low-pressure absorber absorbs heat, so that the low-pressure absorber can work at lower pressure and temperature, the solution from the mixer can be condensed at lower temperature and pressure, the steam exhaust pressure of the steam turbine can be reduced, the pressure ratio of the steam turbine is increased, the work amount of the steam turbine is increased, and the power generation amount of the system is increased. And part of cold energy is sacrificed to enhance power generation.

The system can be operated at lower separator outlet temperatures and pressures (turbine outlet temperatures and pressures) and with more work than conventional KCS-11 under the same operating conditions.

The high-pressure condenser is used for condensing the mixed liquid into liquid. Because the outlet of the mixer is the mixed solution of the ammonia solution and the ammonia vapor, the mixed solution needs to be liquid before being pressurized, otherwise, the power consumption of the solution pump is increased.

In some embodiments of the present invention, the system further comprises a first mixer, a first throttle valve, the exhaust steam outlet of the steam turbine is connected to the first mixer, the ammonia-poor solution outlet of the regenerator is connected to the first throttle valve, and the ammonia-poor solution outlet of the first throttle valve is connected to the first mixer.

In the heat regenerator, the base solution exchanges heat with the ammonia-poor solution, the temperature of the base solution is increased, the temperature of the ammonia-poor solution is reduced, and the base solution is separated into ammonia-rich steam and ammonia-poor solution at the outlet of the separator.

In some embodiments of the invention, the mixer further comprises an evaporator, the liquid outlet of the second flow divider is connected to the evaporator, and the outlet of the evaporator is connected to the first mixer. The ammonia-rich steam is condensed into liquid by the condenser, enters the throttler for throttling and pressure reduction, and then enters the evaporator for evaporation and heat absorption.

In some embodiments of the invention, the system further comprises a cooler and a subcooler, wherein an ammonia water solution outlet of the third flow divider is connected with the subcooler, an ammonia water solution outlet of the subcooler is connected with the cooler, a condensate outlet of the second flow divider is connected with a heat exchange medium inlet of the cooler, an ammonia water solution outlet of the cooler is connected with the subcooler, and a heat exchange medium outlet of the subcooler is connected with the high-pressure condenser.

In the cooler, the aqueous ammonia solution from the second throttle valve evaporates to absorb heat, so that the temperature of the aqueous ammonia solution from the subcooler is lowered. In the subcooler, the ammonia water solution from the first mixer exchanges heat with the solution cooled by the cooler

The subcooler cools the ammonia water liquid (the ammonia water liquid after the lean ammonia solution and the exhaust steam of the steam turbine are mixed) of the first mixer, in the cooler, the ammonia water solution of the subcooler exchanges heat with the ammonia water solution of the second flow divider (the ammonia water solution after the rich ammonia steam is condensed in the condenser), ammonia steam is generated in the ammonia water solution, the ammonia steam enters the second mixer to be mixed with the ammonia water liquid, and the ammonia water liquid is heated through the subcooler and then enters the second mixer. The subcooler actually plays a role in heat regeneration, the ammonia water solution from the first mixer enters the cooler to be condensed after being cooled by the subcooler, and the condensed liquid enters the subcooler to be heated after being pressurized. The advantage of cooling by the subcooler is that the load on the cooler can be reduced, and the ammonia liquid at the outlet of the cooler can be cooled to a lower temperature by a smaller flow rate of heat absorbed by the evaporation of the solution from the second throttling valve. The ammonia water is a mixed working medium, and is characterized by variable-temperature evaporation and variable-temperature condensation, and the temperature of the ammonia water liquid at the outlet of the cooler is lower than that at the inlet.

The cooler plays a role in heat exchange. The ammonia water solution from the subcooler is in a subcooled state after heat exchange, and the temperature in the subcooler is continuously reduced. The ammonia solution from the second throttle evaporates at a lower temperature (around 0 ℃) absorbing heat and the temperature rises.

In some embodiments of the invention, the system further comprises a second mixer, the second mixer is arranged on a pipeline connecting the subcooler and the high-pressure condenser, the ammonia water solution outlet of the subcooler is connected with the second mixer, the heat exchange medium outlet of the cooler is connected with the second mixer, and the mixed solution outlet of the second mixer is connected with the high-pressure condenser.

In some embodiments of the invention, the condenser further comprises a second throttling valve, the liquid outlet of the condenser is connected with the second throttling valve, and the liquid outlet of the second throttling valve is connected with the second flow divider. The second throttle valve throttles and depressurizes the ammonia water solution generated by the condenser.

In some embodiments of the present invention, the system further comprises an oil pump, a first working medium pump, and a second working medium pump, an inlet of the oil pump is connected to the boiler, an outlet of the oil pump is connected to the parabolic trough solar thermal collector, an inlet of the first working medium pump is connected to the high-pressure condenser, an outlet of the first working medium pump is connected to the heat regenerator, an inlet of the second working medium pump is connected to the cooler, and an outlet of the second working medium pump is connected to the subcooler.

In a second aspect, a method for supplying power and cooling by using a solar-driven adjustable combined power and cooling system of the above system includes: the parabolic trough type solar thermal collector transfers solar heat to a heat transfer medium, the heat transfer medium enters a boiler to heat ammonia water, the ammonia water is evaporated and vaporized and enters a separator, the separator is divided into ammonia-rich steam and ammonia-poor solution, the ammonia-rich steam enters a steam turbine to do work after being divided by a first divider, exhaust steam obtained after the work is done enters a first mixer to be mixed with the ammonia-poor solution after being cooled by a heat regenerator and being reduced by a first throttle valve, the mixed ammonia water solution is guided to a high-pressure condenser by a third divider, enters the heat regenerator after being condensed, and returns to the boiler after being heated by the heat regenerator.

The method is an independent power generation method, rich ammonia steam enters a steam turbine to do work to generate power, obtained exhaust steam enters a mixer to be mixed with the lean ammonia solution which is throttled and depressurized by a first throttle valve, and then is condensed by a high-pressure condenser and returns to a boiler through a heat regenerator.

In some embodiments of the invention, the cooling method is: the ammonia-rich steam of first shunt gets into the liquid that the condenser condensation obtained gets into second choke valve throttle decompression in proper order and gets into the second shunt, gets into the evaporimeter after the reposition of redundant personnel of second shunt and evaporates, and the gas that the evaporation obtained mixes with the poor ammonia solution after regenerator cooling and first choke valve step-down, gets into high-pressure condenser through the reposition of redundant personnel of third shunt and condenses, gets into the regenerator after the condensation and heats, returns the boiler after the heating.

This is a separate refrigeration method. The ammonia-rich vapor flows into the condenser entirely through the first splitter.

In some embodiments of the invention, the method of co-delivery is: the rich ammonia steam of first shunt gets into steam turbine and condenser respectively, exhaust steam after doing work in the steam turbine mixes in first blender with the poor ammonia solution after regenerator cooling and first choke valve step-down, the liquid that the condenser condenses and obtains gets into second choke valve throttle decompression back entering second shunt in proper order, get into the evaporimeter after the reposition of redundant personnel of second shunt and evaporate, the gas that the evaporation obtained gets into mixes in the first blender, the mixed liquid that first blender obtained gets into high pressure condenser after the reposition of redundant personnel of third shunt and condenses, get into the regenerator after the condensation and heat, return the boiler after the heating.

This is a combined supply method, and the ammonia-rich steam enters a steam turbine and a condenser respectively.

In some embodiments of the invention, a method of enhancing power generation: the ammonia-rich steam of the first flow divider respectively enters a steam turbine and a condenser, the exhaust steam after acting in the steam turbine is mixed with the lean ammonia solution after being cooled down by a heat regenerator and being reduced by a first throttle valve, the mixed ammonia solution is led to a subcooler by a third flow divider and then enters a cooler, the mixed ammonia solution is cooled by cold energy generated by evaporation of the ammonia solution after being reduced by a second throttle valve, the cooled solution is pumped to intermediate pressure by a second working medium pump and is heated by the subcooler, then the cooled ammonia solution enters a second mixer and is mixed with the ammonia steam from the cooler, the mixed solution enters a high-pressure condenser for condensation, and the condensed solution is pressurized by a first working medium pump and is heated by the heat regenerator and then returns to a boiler again.

This is an enhanced power generation process, with the ammonia rich steam entering the turbine and condenser separately, and without the evaporator, as compared to the cogeneration process.

The invention will be further illustrated by the following examples