CN102337940A - Ammonia water absorption type power circulating device with variable concentration regulating power - Google Patents
Ammonia water absorption type power circulating device with variable concentration regulating power Download PDFInfo
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- CN102337940A CN102337940A CN2011102736035A CN201110273603A CN102337940A CN 102337940 A CN102337940 A CN 102337940A CN 2011102736035 A CN2011102736035 A CN 2011102736035A CN 201110273603 A CN201110273603 A CN 201110273603A CN 102337940 A CN102337940 A CN 102337940A
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Abstract
The invention discloses an ammonia water absorption type power circulating device with variable concentration regulating power for recycling medium and low temperature heat source power. The ammonia water absorption type power circulating device comprises an ammonia water absorption type power circulating device 1, a solution storage tank 2 and an electromagnetic valve bank 3, wherein a port A and a port B at one end of the solution storage tank are respectively connected with an outlet pipeline and an inlet pipeline of a low-pressure ammonia pump through an electromagnetic valve A and an electromagnetic valve B, a port C at the other end of the solution storage tank is connected with an inlet pipeline of a high-pressure ammonia pump, a solution in the solution storage tank is replaced through switching on or off the electromagnetic valve bank by using the characteristic that the pressure of the inlet pipeline of the high-pressure ammonia pump is between the pressure of the outlet pipeline of the low-pressure ammonia pump and the pressure of the inlet pipeline of the low-pressure ammonia pump, thus the solution concentration, the working pressure and the density in a circulating main loop are changed, the mass flow entering a turbine is changed, and the power of the turbine is increased or decreased. The ammonia water absorption type power circulating device with variable concentration regulating power can avoid or reduce throttling loss of a turbine regulating valve, maintain efficient operation of the turbine, and realize maximization of circulating efficiency.
Description
Technical field
The present invention relates to a kind of degree of thickening that is used for the utilization of low-temperature heat source power recovery and regulate the ammonia water absorbing power circulating device of power.
Background technique
The adjusting of common pure working medium power circulating device adopts throttling to regulate, and when operating conditions off-design operating mode, turns down turbine modulating valve realization turbine power adjustments greatly through opening, thereby in the turbine modulating valve, has bigger restriction loss; Because the ammonia water absorbing power circulating device adopts mixed working fluid, having ready conditions changes working pressure and density through changing concentration under same temperature when turbine modulating valve standard-sized sheet, and then change the mass flow rate of turbine, thereby changes turbine power.Based on the regulation scheme of above-mentioned thinking exactly degree of thickening regulate power scheme, can reduce or avoid restriction loss, thereby improve circulatory system efficient.
Summary of the invention
The present invention provides a kind of degree of thickening that is used for the utilization of low-temperature heat source power recovery to regulate the ammonia water absorbing power circulating device of power; Its principle is working pressure and the density that changes turbine ingress working medium through the ammoniacal liquor mixed working fluid solution concentration that changes the ammonia water absorbing power circulating device; And then when turbine modulating valve standard-sized sheet, change the mass flow rate of turbine working medium; Thereby change turbine power, can reduce or avoid restriction loss, improve circulatory system energy conversion efficiency.
The present invention adopts following technological scheme:
A kind of degree of thickening is regulated the ammonia water absorbing power circulating device of power, comprises ammonia water absorbing power circulating device, solution storage tank and electromagnetic valve group; Wherein the ammonia water absorbing power circulating device is made up of vaporizer, turbine modulating valve, turbine unit, regenerator, low-pressure absorber, low pressure ammonia pump, gas-liquid separator, preheater, high pressure absorber, high-pressure ammonia pump, dilute solution throttle valve and connecting line.Vaporizer is provided with thermal source import, thermal source outlet, working solution import and working solution outlet; Regenerator is provided with working solution import and working solution outlet, basic solution inlet port and basic taphole; Gas-liquid separator is provided with basic solution inlet port, the outlet of rich ammonia gas and dilute solution outlet; Low-pressure absorber is divided into solution cooling down absorption segment and cooling water absorber portion; The internal channel of solution cooling down absorption segment is provided with basic solution inlet port and basic taphole; The internal channel of cooling water absorber portion is provided with cooling water intake and coolant outlet, and solution cooling down absorption segment is arranged in the top of cooling water absorber portion; Above solution cooling down absorption segment, also be provided with dilute solution drencher and working solution import, the entry end of dilute solution drencher is the low pressure dilute solution inlet; Bottom liquid capsule at low-pressure absorber is provided with basic taphole; High pressure absorber is divided into high-pressure solution cooling down absorption segment and high-pressure cooling water cooling down absorption segment; The internal channel of high-pressure solution cooling down absorption segment is provided with working solution import and working solution outlet, and the internal channel of high-pressure cooling water absorber portion is provided with cooling water intake and coolant outlet; The high-pressure solution cooling down absorption segment is arranged in the top of high-pressure cooling water cooling down absorption segment; Above the high-pressure solution cooling down absorption segment, also be provided with high pressure dilute solution drencher and rich ammonia import, the entry end of high pressure dilute solution drencher is the dilute solution inlet of high pressure absorber; Bottom liquid capsule at high pressure absorber is provided with the working solution outlet; Preheater is three plume heat exchangers, is provided with the outlet of dilute solution inlet and dilute solution, rich ammonia import and rich ammonia outlet, working solution import and working solution outlet.
The annexation of each parts is: the working solution outlet of vaporizer is connected with the import of turbine modulating valve; The outlet of turbine modulating valve is connected with the import of turbine unit; The outlet of turbine unit is connected with the working solution import of regenerator; The working solution outlet of regenerator is connected with the working solution import of low-pressure absorber; The basic taphole of low-pressure absorber is connected with the import of low pressure ammonia pump; The outlet of low pressure ammonia pump is connected with the basic solution inlet port of low-pressure absorber solution cooling down absorption segment; The basic taphole of low-pressure absorber solution cooling down absorption segment is connected with the basic solution inlet port of regenerator; The basic taphole of regenerator is connected with the import of gas-liquid separator; The rich ammonia outlet of gas-liquid separator is connected with the rich ammonia import of preheater; The dilute solution outlet of gas-liquid separator is connected with the dilute solution inlet of preheater; The rich ammonia outlet of preheater is connected with the rich ammonia import of high pressure absorber; The dilute solution export pipeline of preheater is divided into 2 the tunnel; One the tunnel is connected with the dilute solution inlet of high pressure absorber; Another road is connected with the import of dilute solution throttle valve, and the outlet of dilute solution throttle valve is connected with the dilute solution inlet of low-pressure absorber; The working solution outlet of high pressure absorber is connected with the import of high-pressure ammonia pump, and the high pressure ammonia delivery side of pump is connected with the working solution import of high pressure absorber solution cooling down absorption segment; The working solution outlet of high pressure absorber solution cooling down absorption segment is connected with the working solution import of preheater, and the working solution outlet of preheater is connected with the working solution import of vaporizer.
One end of solution storage tank is established interface A and interface B, and the other end is established interface C; Electromagnetic valve group is made up of solenoid valve A and solenoid valve B; The interface A of solution storage tank is connected with the outlet line of low pressure ammonia pump through solenoid valve A, and the interface B of solution storage tank is connected with the suction line of low pressure ammonia pump through solenoid valve B, and the interface C of solution storage tank is connected with the suction line of high-pressure ammonia pump.
Because the interface A of solution storage tank and the working medium of interface B and major loop joint all are the lower basic ingredients of concentration, and the working medium at interface C place is the higher job element of concentration; The power pressure of these 3 interfaces and major loop joint then is A>C>B; When opening solenoid valve A, when closing solenoid valve B, solution that can be progressively that the concentration in the solution storage tank is higher is discharged; Be replaced into the lower solution of concentration, system's major loop solution concentration raises, thereby pressure is raise and the density increase; Increase the mass flow rate of turbine working medium, improve turbine power; Otherwise, open solenoid valve B, when closing solenoid valve A; Solution that can be progressively that the concentration in the solution storage tank is lower is discharged; Be replaced into the higher solution of concentration, the solution concentration that system's solution concentration reduces thereby the circulatory system is interior will reduce, and pressure descends; The mass flow rate of turbine working medium reduces, thereby reduces turbine power; During stable operation, two solenoid valves all cut out.With adjusted all is the power adjustments that under the condition of turbine modulating valve standard-sized sheet, realizes, has avoided restriction loss, thereby can keep the efficient operation of turbine, realizes the maximization of cycle efficiency.
Compared with prior art, the present invention has following advantage:
1. improved energy conversion efficiency.Because the saturated vapour pressure of ammoniacal liquor mixed working fluid depends on temperature and 2 factors of concentration; After the cold and heat source temperature is confirmed; Therefore the pressure of vaporizer depends on the concentration of solution job element in the system, regulates concentration and can be used as the means of regulating pressure and finally regulate generated output.In thermal source flow or temperature variation; When variation of ambient temperature or load variations; Usually there is bigger restriction loss in the turbine inlet valve throttling regulation scheme that adopts; And realize different working pressure through regulating the concentration that changes working medium, form suitable volume flow, thereby the efficient operation of keeping turbine is the peculiar a kind of efficient regulative mode of avoiding or reducing restriction loss of mixed working fluid power cycle.
2. because the requirement of strength of middle low power turbine becomes more readily available satisfied; But because the complexity of turbine structure; Hope that the turbine of same size covers the power range of operation of broad; To realize seriation, generalization and the needs that reduce cost, the measure of degree of thickening just in time can be satisfied this demand.
3. because waste heat does not possess storage characteristics usually, and can disregard fuel cost, so the strategy of the power adjustments of device for generating power by waste heat is target according to the parameter of thermal source and low-temperature receiver with multiple electricity to greatest extent normally.The efficiency of turbine of common regulative mode descends very big when variable working condition, and power is more difficult to adjusted, therefore is difficult to realize efficiently this target.The present invention then can realize the target of multiple electricity to greatest extent well.
Description of drawings
Fig. 1 is the schematic flow sheet of the embodiment of the invention 1.
Embodiment
Embodiment 1Referring to Fig. 1, a kind of degree of thickening is regulated the ammonia water absorbing power circulating device of power, comprises ammonia water absorbing power circulating device 1, solution storage tank 2 and electromagnetic valve group 3; Wherein ammonia water absorbing power circulating device 1 is made up of vaporizer 1-1, turbine modulating valve 1-2, turbine unit 1-3, regenerator 1-4, low-pressure absorber 1-5, low pressure ammonia pump 1-6, gas-liquid separator 1-7, preheater 1-8, high pressure absorber 1-9, high-pressure ammonia pump 1-10, dilute solution throttle valve 1-11 and connecting line; Vaporizer 1-1 is provided with heat source fluid import 1-1-1, heat source fluid outlet 1-1-2, working solution import 1-1-3 and working solution outlet 1-1-4; Regenerator 1-4 is provided with working solution import 1-4-1 and working solution outlet 1-4-2, basic solution inlet port 1-4-3 and basic taphole 1-4-4, and gas-liquid separator 1-7 is provided with basic solution inlet port 1-7-1, rich ammonia gas outlet 1-7-2 and dilute solution outlet 1-7-3; It is characterized in that low-pressure absorber 1-5 is divided into solution cooling down absorption segment 1-51 and cooling water absorber portion 1-52; The internal channel of solution cooling down absorption segment 1-51 is provided with basic solution inlet port 1-51-1 and basic taphole 1-51-2; The internal channel of cooling water absorber portion 1-52 is provided with cooling water intake 1-52-1 and coolant outlet 1-52-2; Solution cooling down absorption segment 1-51 is arranged in the top of cooling water absorber portion 1-52; Above solution cooling down absorption segment 1-51, also be provided with dilute solution drencher 1-5-3 and gaseous state working solution import 1-5-4; The entry end of dilute solution drencher 1-5-3 is low-pressure absorber dilute solution inlet 1-5-5; Bottom liquid capsule at low-pressure absorber 1-5 is provided with basic taphole 1-5-6; High pressure absorber 1-9 is divided into high-pressure solution cooling down absorption segment 1-91 and high-pressure cooling water cooling down absorption segment 1-92, and the internal channel of high-pressure solution cooling down absorption segment 1-91 is provided with working solution import 1-91-1 and working solution outlet 1-91-2, and the internal channel of high-pressure cooling water absorber portion 1-92 is provided with cooling water intake 1-92-1 and coolant outlet 1-92-2; High-pressure solution cooling down absorption segment 1-91 is arranged in the top of high-pressure cooling water cooling down absorption segment 1-92; Above high-pressure solution cooling down absorption segment 1-91, also be provided with high pressure dilute solution drencher 1-9-3 and rich ammonia import 1-9-4, the entry end of high pressure dilute solution drencher 1-9-3 is the dilute solution inlet 1-9-5 of high pressure absorber 1-9, is provided with working solution outlet 1-9-6 at the bottom liquid capsule of high pressure absorber 1-9; Preheater 1-8 is three plume heat exchangers, is provided with dilute solution inlet 1-8-1, dilute solution outlet 1-8-2, rich ammonia import 1-8-3, rich ammonia outlet 1-8-4, working solution import 1-8-5 and working solution outlet 1-8-6;
The annexation of ammonia water absorbing power circulating device 1 each parts is: the working solution outlet 1-1-4 of vaporizer 1-1 is connected with the import 1-2-1 of turbine modulating valve 1-2; The outlet 1-2-2 of turbine modulating valve is connected with the import 1-3-1 of turbine unit 1-3; The outlet 1-3-2 of turbine unit is connected with the working solution import 1-4-1 of regenerator 1-4; The working solution outlet 1-4-2 of regenerator is connected with the working solution import 1-5-4 of low-pressure absorber 1-5; The basic taphole 1-5-6 of low-pressure absorber is connected with the import 1-6-1 of low pressure ammonia pump 1-6; The outlet 1-6-2 of low pressure ammonia pump 1-6 is connected with the basic solution inlet port 1-51-1 of low-pressure absorber 1-5 solution cooling down absorption segment 1-51; The basic taphole 1-51-2 of hypotonic solution cooling down absorption segment 1-51 is connected with the basic solution inlet port 1-4-3 of regenerator; The basic taphole 1-4-4 of regenerator is connected with the import 1-7-1 of gas-liquid separator 1-7; The rich ammonia outlet 1-7-2 of gas-liquid separator 1-7 is connected with the rich ammonia import 1-8-3 of preheater 1-8, and the dilute solution outlet 1-7-3 of gas-liquid separator 1-7 is connected with the dilute solution inlet 1-8-1 of preheater 1-8, and the rich ammonia outlet 1-8-4 of preheater is connected with the rich ammonia import 1-9-4 of high pressure absorber 1-9; The dilute solution outlet 1-8-2 pipeline of preheater 1-8 is divided into 2 the tunnel; One the tunnel is connected with the dilute solution inlet 1-9-5 of high pressure absorber 1-9, and another road is connected with the import 1-11-1 of dilute solution throttle valve 1-11, and the outlet 1-11-2 of dilute solution throttle valve 1-11 is connected with the dilute solution inlet 1-5-5 of low-pressure absorber; The working solution outlet 1-9-6 of high pressure absorber 1-9 is connected with the import 1-10-1 of high-pressure ammonia pump 1-10, and the outlet 1-10-2 of high-pressure ammonia pump 1-10 is connected with the working solution import 1-91-1 of high pressure absorber 1-9 solution cooling down absorption segment 1-91; The working solution outlet 1-91-2 of high pressure absorber 1-9 solution cooling down absorption segment 1-91 is connected with the working solution import 1-8-5 of preheater 1-8, and the working solution outlet 1-8-6 of preheater is connected with the working solution import 1-1-3 of vaporizer 1-1;
One end of solution storage tank 2 is established interface A 2-1 and interface B 2-2, and the other end is established interface C 2-3; Electromagnetic valve group 3 is made up of solenoid valve A 3-1 and solenoid valve B 3-2; The interface A 2-1 of solution storage tank 2 is connected with the outlet line of low pressure ammonia pump 1-6 through solenoid valve A 3-1; The interface B 2-2 of solution storage tank 2 is connected with the suction line of low pressure ammonia pump 1-6 through solenoid valve B 3-2; The interface C 2-3 of solution storage tank 2 is connected with the suction line of high-pressure ammonia pump 1-10.
The power adjustment procedure of the ammoniacal liquor power circulating device of this degree of thickening adjusting power is following: the big or temperature rising in the heat source stream quantitative change; Or ambient temperature is when reducing, and solenoid valve A 3-1 is opened in gradation, and solenoid valve B 3-2 keeps shut; Progressively that the concentration in the solution storage tank 2 is higher solution is discharged; Be replaced into the lower solution of concentration, thereby the solution concentration in the circulatory system major loop will raise, the raising of working solution concentration can make pressure raise and the density increase; Increase the mass flow rate of turbine working medium, thereby improve turbine power; Otherwise; When little or temperature reduces in the heat source stream quantitative change, or ambient temperature is when raising, and solenoid valve B 3-2 is opened in gradation; Solenoid valve A 3-1 keeps shut; Progressively the solution that concentration is lower in the solution storage tank 2 is discharged, be replaced into the higher solution of concentration, thereby the solution concentration in the circulatory system major loop will reduce; The reduction of working solution concentration makes pressure reduce and density reduces, and reduces the mass flow rate of turbine working medium, thereby reduces turbine power; During stable operation, two solenoid valves all cut out.With adjusted all is the power adjustments that under the condition of turbine modulating valve 1-2 standard-sized sheet, realizes, avoids or has reduced restriction loss, thereby can keep the efficient operation of turbine, realizes the maximization of cycle efficiency.
Claims (1)
1. a degree of thickening that is used for the utilization of low-temperature heat source power recovery is regulated the ammonia water absorbing power circulating device of power; Its principle is working pressure and the density that changes turbine ingress working medium through the ammoniacal liquor mixed working fluid concentration that changes the ammonia water absorbing power circulating device; And then when turbine modulating valve standard-sized sheet, change the mass flow rate of turbine working medium; Thereby change turbine power, can reduce or avoid restriction loss, improve circulatory system energy conversion efficiency;
It is characterized in that, comprise ammonia water absorbing power circulating device (1), solution storage tank (2) and electromagnetic valve group (3); Wherein ammonia water absorbing power circulating device (1) is made up of vaporizer (1-1), turbine modulating valve (1-2), turbine unit (1-3), regenerator (1-4), low-pressure absorber (1-5), low pressure ammonia pump (1-6), gas-liquid separator (1-7), preheater (1-8), high pressure absorber (1-9), high-pressure ammonia pump (1-10), dilute solution throttle valve (1-11) and connecting line; Vaporizer (1-1) is provided with heat source fluid import (1-1-1), heat source fluid outlet (1-1-2), working solution import (1-1-3) and working solution outlet (1-1-4); Regenerator (1-4) is provided with working solution import (1-4-1) and working solution outlet (1-4-2), basic solution inlet port (1-4-3) and basic taphole (1-4-4), and gas-liquid separator (1-7) is provided with basic solution inlet port (1-7-1), rich ammonia gas outlet (1-7-2) and dilute solution outlet (1-7-3); It is characterized in that low-pressure absorber (1-5) is divided into solution cooling down absorption segment (1-51) and cooling water absorber portion (1-52); The internal channel of solution cooling down absorption segment (1-51) is provided with basic solution inlet port (1-51-1) and basic taphole (1-51-2); The internal channel of cooling water absorber portion (1-52) is provided with cooling water intake (1-52-1) and coolant outlet (1-52-2); Solution cooling down absorption segment (1-51) is arranged in the top of cooling water absorber portion (1-52); Also be provided with dilute solution drencher (1-5-3) and gaseous state working solution import (1-5-4) in the top of solution cooling down absorption segment (1-51); The entry end of dilute solution drencher (1-5-3) is low-pressure absorber dilute solution inlet (1-5-5); Bottom liquid capsule at low-pressure absorber (1-5) is provided with basic taphole (1-5-6); High pressure absorber (1-9) is divided into high-pressure solution cooling down absorption segment (1-91) and high-pressure cooling water cooling down absorption segment (1-92); The internal channel of high-pressure solution cooling down absorption segment (1-91) is provided with working solution import (1-91-1) and working solution outlet (1-91-2); The internal channel of high-pressure cooling water absorber portion (1-92) is provided with cooling water intake (1-92-1) and coolant outlet (1-92-2), and high-pressure solution cooling down absorption segment (1-91) is arranged in the top of high-pressure cooling water cooling down absorption segment (1-92), also is provided with high pressure dilute solution drencher (1-9-3) and rich ammonia import (1-9-4) in the top of high-pressure solution cooling down absorption segment (1-91); The entry end of high pressure dilute solution drencher (1-9-3) is the dilute solution inlet (1-9-5) of high pressure absorber (1-9), is provided with working solution outlet (1-9-6) at the bottom liquid capsule of high pressure absorber (1-9); Preheater (1-8) is three plume heat exchangers, is provided with dilute solution inlet (1-8-1), dilute solution outlet (1-8-2), rich ammonia import (1-8-3), rich ammonia outlet (1-8-4), working solution import (1-8-5) and working solution outlet (1-8-6);
The annexation of each parts of ammonia water absorbing power circulating device (1) is: the working solution outlet (1-1-4) of vaporizer (1-1) is connected with the import (1-2-1) of turbine modulating valve (1-2); The outlet of turbine modulating valve (1-2-2) is connected with the import (1-3-1) of turbine unit (1-3); The outlet of turbine unit (1-3-2) is connected with the working solution import (1-4-1) of regenerator (1-4); The working solution outlet (1-4-2) of regenerator is connected with the working solution import (1-5-4) of low-pressure absorber (1-5); The basic taphole (1-5-6) of low-pressure absorber is connected with the import (1-6-1) of low pressure ammonia pump (1-6); The outlet (1-6-2) of low pressure ammonia pump (1-6) is connected with the basic solution inlet port (1-51-1) of low-pressure absorber (1-5) solution cooling down absorption segment (1-51); The basic taphole (1-51-2) of hypotonic solution cooling down absorption segment (1-51) is connected with the basic solution inlet port (1-4-3) of regenerator; The basic taphole (1-4-4) of regenerator is connected with the import (1-7-1) of gas-liquid separator (1-7); The rich ammonia outlet (1-7-2) of gas-liquid separator (1-7) is connected with the rich ammonia import (1-8-3) of preheater (1-8); The dilute solution outlet (1-7-3) of gas-liquid separator (1-7) is connected with the dilute solution inlet (1-8-1) of preheater (1-8); The rich ammonia outlet (1-8-4) of preheater is connected with the rich ammonia import (1-9-4) of high pressure absorber (1-9), and the dilute solution of preheater (1-8) outlet (1-8-2) pipeline is divided into 2 the tunnel, the one tunnel and is connected with the dilute solution inlet (1-9-5) of high pressure absorber (1-9); Another road is connected with the import (1-11-1) of dilute solution throttle valve (1-11), and the outlet (1-11-2) of dilute solution throttle valve (1-11) is connected with the dilute solution inlet (1-5-5) of low-pressure absorber; The working solution outlet (1-9-6) of high pressure absorber (1-9) is connected with the import (1-10-1) of high-pressure ammonia pump (1-10), and the outlet (1-10-2) of high-pressure ammonia pump (1-10) is connected with the working solution import (1-91-1) of high pressure absorber (1-9) solution cooling down absorption segment (1-91); The working solution outlet (1-91-2) of high pressure absorber (1-9) solution cooling down absorption segment (1-91) is connected with the working solution import (1-8-5) of preheater (1-8), and the working solution outlet (1-8-6) of preheater is connected with the working solution import (1-1-3) of vaporizer (1-1);
An end that it is characterized in that solution storage tank (2) is established interface A (2-1) and interface B (2-2), and the other end is established interface C (2-3); Electromagnetic valve group (3) is made up of solenoid valve A (3-1) and solenoid valve B (3-2); The interface A (2-1) of solution storage tank (2) is connected with the outlet line of low pressure ammonia pump (1-6) through solenoid valve A (3-1); The interface B (2-2) of solution storage tank (2) is connected with the suction line of low pressure ammonia pump (1-6) through solenoid valve B (3-2), and the interface C (2-3) of solution storage tank (2) is connected with the suction line of high-pressure ammonia pump (1-10).
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| US10598051B2 (en) | 2016-01-04 | 2020-03-24 | University Of Newcastle Upon Tyne | Energy storage system |
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| CN104074565A (en) * | 2014-01-16 | 2014-10-01 | 中冶南方工程技术有限公司 | Working medium concentration adjustable ammonia power cycle system |
| US10598051B2 (en) | 2016-01-04 | 2020-03-24 | University Of Newcastle Upon Tyne | Energy storage system |
| CN108757070A (en) * | 2018-05-15 | 2018-11-06 | 西安交通大学 | A kind of ammonia water mixture power cycle generating system and control method for coordinating |
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