CN111608757A - Single working medium steam combined cycle - Google Patents

Single working medium steam combined cycle Download PDF

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Publication number
CN111608757A
CN111608757A CN202010331398.2A CN202010331398A CN111608757A CN 111608757 A CN111608757 A CN 111608757A CN 202010331398 A CN202010331398 A CN 202010331398A CN 111608757 A CN111608757 A CN 111608757A
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working medium
kilogram
kilogram working
heat absorption
decompression
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李鸿瑞
李华玉
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    • 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
    • F01K23/00—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids
    • F01K23/02—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled
    • 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
    • F01K25/00—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for
    • F01K25/08—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)
  • Press Drives And Press Lines (AREA)

Abstract

The invention provides a single working medium steam combined cycle, and belongs to the technical field of energy and power. Single working medium steam combined cycle, is formed from M1Kilogram and M2Working medium composed of kilogram, nine processes carried out separately or together-M1Step-up process of working medium kilogram 12, M1Heat absorption and vaporization process 23, M of kilogram working medium1Decompression process 34, M of kilogram working medium145, M kilogram working medium heat absorption process2Boosting process of 85, M for kilogram working medium356, M kilogram working medium heat absorption process3Decompression process with kilogram working medium 67, M378, M, kilogram working medium heat release process1Kilogram working medium heat release condensation process 81-a closed process of composition; wherein M is3Is M1And M2And (4) summing.

Description

Single working medium steam combined cycle
The technical field is as follows:
the invention belongs to the technical field of energy and power.
Background art:
cold demand, heat demand and power demand, which are common in human life and production; among them, the conversion of thermal energy into mechanical energy is an important way to obtain and provide power. Generally, the temperature of the heat source decreases with the release of heat, and the heat source is variable in temperature; when fossil fuel is used as source energy, the heat source has the dual characteristics of high temperature and variable temperature, so that the utilization rate of energy is not ideal when refrigeration, heat supply or conversion into power is realized by adopting a single thermodynamic cycle theory.
Taking an external combustion type steam power device as an example, a heat source of the external combustion type steam power device belongs to a high-temperature and variable-temperature heat source; when Rankine cycle is taken as a theoretical basis and steam is taken as a cycle working medium to realize thermal power conversion, the cycle working medium and a heat source have large temperature difference loss and large irreversible loss no matter what parameters are adopted for operation due to the limitation of temperature resistance and pressure resistance and safety of materials, so that the thermal efficiency is low.
People need to simply, actively and efficiently utilize fuel generation or other high-temperature heat energy to realize refrigeration, heat supply or power conversion, which needs support of a thermal science basic theory; in a thermal science basic theory system, thermodynamic cycle is the core of the theoretical basis of a heat energy utilization device and an energy utilization system; the creation and development application of thermodynamic cycle will play a significant role in the leap of energy utilization, and will actively push social progress and productivity development.
The invention provides a single-working-medium steam combined cycle, which aims to provide theoretical support for simplification and high efficiency of a thermodynamic system aiming at the power application of a high-temperature heat source or a variable-temperature heat source from the principle of simply, actively and efficiently realizing temperature difference utilization.
The invention content is as follows:
the invention mainly aims to provide a single-working-medium steam combined cycle, and the specific invention contents are explained in terms as follows:
1. single working medium steam combined cycle, is formed from M1Kilogram and M2Working medium composed of kilogram, nine processes carried out separately or together-M1Step-up process of working medium kilogram 12, M1Heat absorption and vaporization process 23, M of kilogram working medium1Decompression process 34, M of kilogram working medium145, M kilogram working medium heat absorption process2Boosting process of 85, M for kilogram working medium356, M kilogram working medium heat absorption process3Decompression process with kilogram working medium 67, M378, M, kilogram working medium heat release process1Kilogram working medium dischargeThermal condensation process 81-a compositional closed process; wherein M is3Is M1And M2And (4) summing.
2. Single working medium steam combined cycle, is formed from M1Kilogram and M2Ten processes carried out separately or together-M1Step-up process of working medium kilogram 12, M1Heat absorption and vaporization process 23, M of kilogram working medium1Decompression process 34, M of kilogram working medium145, M kilogram working medium heat absorption process1Decompression process 57, M with kilogram working medium296, M kilogram working medium boosting process2Kilogram working medium endothermic process 67, M3Decompression process 78, M with kilogram working medium389, M kilogram working medium heat release process1Kilogram working medium heat release condensation process 91-a closed process of composition; wherein M is3Is M1And M2And (4) summing.
3. Single working medium steam combined cycle, is formed from M1Kilogram and M2Ten processes carried out separately or together-M1Step-up process of working medium kilogram 12, M1Heat absorption and vaporization process 23, M of kilogram working medium1Decompression process 34, M of kilogram working medium147, M kilogram working medium heat absorption process2Step-up process of 95, M for kilogram working medium256, M kilogram working medium heat absorption process2Decompression process with kilogram working medium 67, M3Decompression process 78, M with kilogram working medium389, M kilogram working medium heat release process1Kilogram working medium heat release condensation process 91-a closed process of composition; wherein M is3Is M1And M2And (4) summing.
4. Single working medium steam combined cycle, is formed from M1Kilogram and M2Working medium composed of kilogram, eleven processes carried out separately or together-M1Step-up process of working medium kilogram 12, M1Heat absorption and vaporization process 23, M of kilogram working medium1Decompression process 34, M of kilogram working medium145, M kilogram working medium heat absorption process1Decompression process 59, M with kilogram working medium2Kilogram working medium boosting process c6, M2Kilogram working medium endothermic process 67, M2Decompression process 78, M with kilogram working medium289, M kilogram working medium heat release process3Kilogram working medium heat release process 9c, M1Kilogram working medium exothermal condensation process c 1-the closed process of component; wherein M is3Is M1And M2And (4) summing.
5. Single working medium steam combined cycle, is formed from M1Kilogram and M2Working medium composed of kilogram, eleven processes carried out separately or together-M1Step-up process of working medium kilogram 12, M1Heat absorption and vaporization process 23, M of kilogram working medium1Decompression process 34, M of kilogram working medium145, M kilogram working medium heat absorption process1Decompression process 56, M of kilogram working medium1Kilogram working medium heat release process 69, M2Kilogram working medium boosting process c7, M278, M, kilogram working medium heat absorption process2Decompression process 89, M with kilogram working medium3Kilogram working medium heat release process 9c, M1Kilogram working medium exothermal condensation process c 1-the closed process of component; wherein M is3Is M1And M2And (4) summing.
6. Single working medium steam combined cycle, is formed from M1Kilogram and M2Working medium composed of kilograms of composition, twelve processes carried out separately or together or in part-M1Step-up process of working medium kilogram 12, M1Heat absorption and vaporization process 23, M of kilogram working medium1Decompression process 34, M of kilogram working medium145, M kilogram working medium heat absorption process2Kilogram working medium boosting process c5, M3Kilogram working medium heat absorption process 56, X kilogram working medium pressure reduction process 69, (M)3-X) kilogram working substance endotherm 67, (M)3-X) decompression Process 78 with kg of working substance, (M)3-X) kilogram working substance exothermic Process 89, M3Kilogram working medium heat release process 9c, M1Kilogram working medium exothermal condensation process c 1-the closed process of component; wherein M is3Is M1And M2And (4) summing.
7. Single working medium steam combined cycle, is formed from M1Kilogram and M2Working medium composed of kilograms of composition, twelve processes carried out separately or together or in part-M1Step-up process of working medium kilogram 12, M1Kilogram working medium heat absorption process 2b, (M)1+ M) kilogram toolsEndothermic vaporization process b3, (M)1+ M) kilogram working medium depressurization 34, (M)1+ M) kilogram working medium endothermic process 45, M28a in kilogram working medium boosting process, ab in M kilogram working medium heat releasing condensation process, (M)2M) kilogram working medium pressure rise process a5, M356, M kilogram working medium heat absorption process3Decompression process with kilogram working medium 67, M378, M, kilogram working medium heat release process1Kilogram working medium heat release condensation process 81-a closed process of composition; wherein M is3Is M1And M2And (4) summing.
8. Single working medium steam combined cycle, is formed from M1Kilogram and M2Working substances in kilogram composition, thirteen processes carried out individually or jointly or in part-M1Step-up process of working medium kilogram 12, M1Kilogram working medium heat absorption process 2b, (M)1+ M) kilogram working medium endothermic vaporization process b3, (M)1+ M) kilogram working medium depressurization 34, (M)1+ M) kilogram working medium endothermic process 45, (M)1+ M) kilogram working medium depressurization 57, M2Kilogram working medium boosting process 9a, M kilogram working medium heat release condensation process ab, (M)2M) kilogram working medium pressure increasing process a6, (M)2-M) kilogram working substance endothermic process 67, M3Decompression process 78, M with kilogram working medium389, M kilogram working medium heat release process1Kilogram working medium heat release condensation process 91-a closed process of composition; wherein M is3Is M1And M2And (4) summing.
9. Single working medium steam combined cycle, is formed from M1Kilogram and M2Working substances in kilogram composition, thirteen processes carried out individually or jointly or in part-M1Step-up process of working medium kilogram 12, M1Kilogram working medium heat absorption process 2b, (M)1+ M) kilogram working medium endothermic vaporization process b3, (M)1+ M) kilogram working medium depressurization 34, (M)1+ M) kilogram working medium endothermic process 47, M2Kilogram working medium boosting process 9a, M kilogram working medium heat release condensation process ab, (M)2M) kilogram working medium pressure increasing process a5, (M)2M) kilogram working medium endothermic Process 56, (M)2-M) depressurization of 67, M) kg of working medium3Decompression process 78, M with kilogram working medium389, M kilogram working medium heat release process1Kilogram working medium heat release condensation process 91-a closed process of composition; wherein M is3Is M1And M2And (4) summing.
10. Single working medium steam combined cycle, is formed from M1Kilogram and M2Working medium composed of kilograms of composition, fourteen processes carried out separately or together or partially-M1Step-up process of working medium kilogram 12, M1Kilogram working medium heat absorption process 2b, (M)1+ M) kilogram working medium endothermic vaporization process b3, (M)1+ M) kilogram working medium depressurization 34, (M)1+ M) kilogram working medium endothermic process 45, (M)1+ M) kilogram working medium depressurization process 59, M2Kilogram working medium boosting process ca, M kilogram working medium heat releasing condensation process ab, (M)2M) kilogram working medium pressure increasing process a6, (M)2-M) kilogram working substance endothermic process 67, (M)2-M) kilogram working medium depressurization 78, (M)2-M) kilogram working medium exothermic Process 89, M3Kilogram working medium heat release process 9c, M1Kilogram working medium exothermal condensation process c 1-the closed process of component; wherein M is3Is M1And M2And (4) summing.
11. Single working medium steam combined cycle, is formed from M1Kilogram and M2Working medium composed of kilograms of composition, fourteen processes carried out separately or together or partially-M1Step-up process of working medium kilogram 12, M1Kilogram working medium heat absorption process 2b, (M)1+ M) kilogram working medium endothermic vaporization process b3, (M)1+ M) kilogram working medium depressurization 34, (M)1+ M) kilogram working medium endothermic process 45, (M)1+ M) kilogram working medium depressurization 56 (M)1+ M) kilogram working medium exothermic process 69, M2Kilogram working medium boosting process ca, M kilogram working medium heat releasing condensation process ab, (M)2M) kilogram working medium pressure increasing process a7, (M)2-M) kilogram working medium endothermic Process 78, (M)2-M) decompression Process 89, M) with kg of working substance3Kilogram working medium heat release process 9c, M1Kilogram working medium exothermal condensation process c 1-the closed process of component; m3Is M1And M2And (4) summing.
12. A single working medium steam combined cycle isFinger is composed of M1Kilogram and M2Working medium composed of kilograms of composition, fifteen processes carried out separately or together or partially-M1Step-up process of working medium kilogram 12, M1Kilogram working medium heat absorption process 2b, (M)1+ M) kilogram working medium endothermic vaporization process b3, (M)1+ M) kilogram working medium depressurization 34, (M)1+ M) kilogram working medium endothermic process 45, M2Kilogram working medium boosting process ca, M kilogram working medium heat releasing condensation process ab, (M)2M) kilogram working medium pressure rise process a5, M3Kilogram working medium heat absorption process 56, X kilogram working medium pressure reduction process 69, (M)3-X) kilogram working substance endotherm 67, (M)3-X) decompression Process 78 with kg of working substance, (M)3-X) kilogram working substance exothermic Process 89, M3Kilogram working medium heat release process 9c, M1Kilogram working medium exothermal condensation process c 1-the closed process of component; wherein M is3Is M1And M2And (4) summing.
Description of the drawings:
FIG. 1 is an exemplary illustration of a 1 st principal flow scheme for a single-working-medium combined-steam cycle provided in accordance with the present invention.
FIG. 2 is an exemplary diagram of a 2 nd schematic flow diagram of a single-working-medium vapor combined cycle according to the present invention.
FIG. 3 is an exemplary diagram of a 3 rd principle flow of a single-working-medium vapor combined cycle according to the present invention.
FIG. 4 is a diagram illustrating an example of the 4 th principle flow of a single-working-medium vapor combined cycle according to the present invention.
FIG. 5 is an exemplary diagram of a5 th principle flow of a single-working-medium vapor combined cycle according to the present invention.
FIG. 6 is an exemplary diagram of a6 th principle flow of a single-working-medium vapor combined cycle according to the present invention.
FIG. 7 is a diagram illustrating an example of the 7 th principle flow of a single-working-medium vapor combined cycle according to the present invention.
FIG. 8 is an exemplary diagram of an 8 th principle flow of a single-working-medium combined steam cycle according to the present invention.
FIG. 9 is an exemplary diagram of a 9 th principle flow of a single-working-medium vapor combined cycle according to the present invention.
FIG. 10 is an exemplary diagram of a 10 th principle flow of a single-working-medium vapor combined cycle according to the present invention.
FIG. 11 is an exemplary 11 th principle flow of a single-working-medium combined-steam cycle according to the present invention.
FIG. 12 is a schematic diagram illustrating an exemplary 12 th principle flow of a single-working-medium vapor combined cycle according to the present invention.
The specific implementation mode is as follows:
it should be noted that, in terms of the expression of the structure and the flow, the description is not repeated if necessary, and the obvious flow is not expressed; in each of the following examples, M3Is M1And M2Summing; the invention is described in detail below with reference to the figures and examples.
The single-working-medium steam combined cycle example in the T-s diagram of fig. 1 is performed as follows:
(1) from the cycle process:
working medium process-M1Boosting process of kilogram working medium condensate 12, M1Kilogram working medium heat absorption temperature rise, vaporization and overheating process 23, M1Decompression expansion process 34, M of kilogram working medium145, M kilogram working medium heat absorption temperature rise process2Boosting and heating process of 85, M for kilogram working medium356, M kilogram working medium heat absorption temperature rise process3Decompression expansion process of kilogram working medium 67, M378, M kilogram working medium heat release and temperature reduction process1Kilogram working medium exothermal condensation process 81-9 processes in total.
(2) From the energy conversion perspective:
① endothermic Process-M1Carrying out 23 processes and 45 processes by kg of working medium, and M356 kg of working medium is subjected to the process, and the heat absorption of the high-temperature section is generally provided by an external heat source; the heat absorption of the low-temperature section is performed by an external heat source or by M3The kilogram of working fluid is provided with the heat release (back heating) of the 78 process, or both.
② exothermic Process-M3The kilogram working medium carries out heat release in the 78 process, and can provide corresponding heat to the outsideDemand, or some or all of the endothermic demand for other processes of the combined cycle, with the unusable portion being released to a low temperature heat source (e.g., ambient); m1The heat release of 81 process is carried out by kilogram working medium, and the heat release is generally released to a low-temperature heat source and provided to a heat user during heat power combined supply.
③ energy conversion Process-M1The boosting process 12 of kilogram working medium is generally completed by a circulating pump, M2The boosting process 85 of kilogram working media is generally completed by a compressor; m1Decompression expansion process 34 and M with kilogram working medium3The decompression expansion process 67 of kilogram working medium is generally completed by an expansion machine; the expansion work is larger than the pressure-raising power consumption, the heat-changing work is completed, the circulation net work is provided for the outside, and the single working medium steam combined circulation is formed.
The single-working-medium vapor combined cycle example in the T-s diagram of fig. 2 is performed as follows:
(1) from the cycle process:
working medium process-M1Boosting process of kilogram working medium condensate 12, M1Kilogram working medium heat absorption temperature rise, vaporization and overheating process 23, M1Decompression expansion process 34, M of kilogram working medium145, M kilogram working medium heat absorption temperature rise process1Decompression expansion process 57, M with kilogram working medium296, M kilogram working medium pressure rising and temperature rising process2Kilogram working medium heat absorption temperature rise process 67, M3Decompression expansion process 78, M with kilogram working medium389, M kilogram working medium heat release and temperature reduction process1Kilogram working medium releases heat and condenses 91-10 processes in total.
(2) From the energy conversion perspective:
① endothermic Process-M1Carrying out 23 processes and 45 processes by kg of working medium, and M267 processes are carried out on kilogram working media, and heat absorption of a high-temperature section of the working media is generally provided by an external heat source; the heat absorption of the low-temperature section is performed by an external heat source or by M3The kilogram of working fluid is provided by heat release (recuperation) of 89 processes, or both.
② exothermic Process-M3The kilogram working medium carries out the heat release of the 89 process, can provide the heat to the outside to meet the corresponding heat requirement, or is partially or mostly used for combined circulationThe endothermic demand of other processes, the release of unusable parts to a low temperature heat source (e.g. ambient); m1The heat released in the process of 91 kg of working medium is generally released to a low-temperature heat source and is provided to a heat user during heat and power combined supply.
③ energy conversion Process-M1The boosting process 12 of kilogram working medium is generally completed by a circulating pump, M2The boosting process 96 of kilogram of working medium is generally completed by a compressor; m1Decompression expansion process 34, M of kilogram working medium1Decompression expansion process 57 of kilogram working medium, and M3The decompression expansion process 78 of kilogram of working medium is generally completed by an expander; the expansion work is larger than the pressure-raising power consumption, the heat-changing work is completed, the circulation net work is provided for the outside, and the single working medium steam combined circulation is formed.
The single-working-medium vapor combined cycle example in the T-s diagram of fig. 3 is performed as follows:
(1) from the cycle process:
working medium process-M1Boosting process of kilogram working medium condensate 12, M1Kilogram working medium heat absorption temperature rise, vaporization and overheating process 23, M1Decompression expansion process 34, M of kilogram working medium147, M kilogram working medium heat absorption temperature rise process2Step-up and temperature-rise process of 95, M of kilogram working medium256, M kilogram working medium heat absorption temperature rise process2Decompression expansion process of kilogram working medium 67, M3Decompression expansion process 78, M with kilogram working medium389, M kilogram working medium heat release and temperature reduction process1Kilogram working medium releases heat and condenses 91-10 processes in total.
(2) From the energy conversion perspective:
① endothermic Process-M1Carrying out 23 processes and 47 processes by kg of working medium, and M256 processes are carried out by kilogram working medium, the heat absorption of the high-temperature section is generally provided by an external heat source, and the heat absorption of the low-temperature section is provided by the external heat source or by M3The kilogram of working fluid is provided by heat release (recuperation) of 89 processes, or both.
② exothermic Process-M3The kilogram working medium carries out the heat release of the 89 process, can be provided for meeting the corresponding heat requirement, or is partially or mostly used forThe endothermic demand of other processes of the combined cycle, the waste being released to a low temperature heat source (e.g. ambient); m1The heat released in the process of 91 kg of working medium is generally released to a low-temperature heat source and is provided to a heat user during heat and power combined supply.
③ energy conversion Process-M1The boosting process 12 of kilogram working medium is generally completed by a circulating pump, M2The boosting process 95 of kilogram of working medium is generally completed by a compressor; m1Decompression expansion process 34, M of kilogram working medium2Decompression expansion process 67 and M of kilogram working medium3The decompression expansion process 78 of kilogram of working medium is generally completed by an expander; the expansion work is larger than the pressure-raising power consumption, the heat-changing work is completed, the circulation net work is provided for the outside, and the single working medium steam combined circulation is formed.
The single-working-medium vapor combined cycle example in the T-s diagram of fig. 4 is performed as follows:
(1) from the cycle process:
working medium process-M1Boosting process of kilogram working medium condensate 12, M1Kilogram working medium heat absorption temperature rise, vaporization and overheating process 23, M1Decompression expansion process 34, M of kilogram working medium145, M kilogram working medium heat absorption temperature rise process1Decompression expansion process 59, M with kilogram working medium2Kilogram working medium pressure-raising and temperature-raising process c6, M2Kilogram working medium heat absorption temperature rise process 67, M2Decompression expansion process 78, M with kilogram working medium289, M kilogram working medium heat release and temperature reduction process39c, M in kilogram working medium heat release and temperature reduction process1Kilogram working medium exothermal condensation process c 1-11 processes in total.
(2) From the energy conversion perspective:
① endothermic Process-M1Carrying out 23 processes and 45 processes by kg of working medium, and M267 processes are carried out on kilogram working media, and heat absorption of a high-temperature section of the working media is generally provided by an external heat source; the heat absorption of the low-temperature section is performed by an external heat source or by M289 process and M are carried out by kilogram working medium3The kilogram working medium is provided by the combined heat release (back heating) of the 9c process, or by the two.
② exothermic Process-M2Kilogram (kilogram)Working fluid for 89 process heat release and M3Kilogram working medium releases heat in the 9c process, corresponding heat requirements can be met, or part or most of heat absorption requirements for other processes of combined cycle can be met, and useless parts are released to a low-temperature heat source (such as environment); m1The kilogram working medium carries out heat release in the c1 process, and the heat release is generally released to a low-temperature heat source and provided to a heat user in the process of heat cogeneration.
③ energy conversion Process-M1The boosting process 12 of kilogram working medium is generally completed by a circulating pump, M2The boosting process c6 of kilogram working medium is generally completed by a compressor; m1Depressurization of 34, M kilogram of working medium1Depressurization 59 of kilogram of working medium, also M2The depressurization 78 of kg of working medium is generally effected by means of an expansion machine; the expansion work is larger than the pressure-raising power consumption, the heat-changing work is completed, the circulation net work is provided for the outside, and the single working medium steam combined circulation is formed.
The single-working-medium vapor combined cycle example in the T-s diagram of fig. 5 is performed as follows:
(1) from the cycle process:
working medium process-M1Boosting process of kilogram working medium condensate 12, M1Kilogram working medium heat absorption temperature rise, vaporization and overheating process 23, M1Decompression expansion process 34, M of kilogram working medium145, M kilogram working medium heat absorption temperature rise process1Decompression expansion process 56, M of kilogram working medium169, M kilogram working medium heat release and temperature reduction process2Kilogram working medium pressure-raising and temperature-raising process c7, M278, M kilogram working medium heat absorption temperature rise process2Decompression expansion process 89, M with kilogram working medium39c, M in kilogram working medium heat release and temperature reduction process1Kilogram working medium exothermal condensation process c 1-11 processes in total.
(2) From the energy conversion perspective:
① endothermic Process-M1Carrying out 23 processes and 45 processes by kg of working medium, and M278 kg of working medium is subjected to the process, and the heat absorption of the high-temperature section is generally provided by an external heat source; the heat absorption of the low-temperature section is performed by an external heat source or by M169 kg working medium and M39c process with kilogram working mediumOr both may be provided by a combined heat release (recuperation) of.
② exothermic Process-M1Heat release and M of 69 processes carried out with kilograms of working medium3Kilogram working medium releases heat in the 9c process, corresponding heat requirements can be met, or part or most of heat absorption requirements for other processes of combined cycle can be met, and useless parts are released to a low-temperature heat source (such as environment); m1The kilogram working medium carries out heat release in the c1 process, and the heat release is generally released to a low-temperature heat source and provided to a heat user in the process of heat cogeneration.
③ energy conversion Process-M1The boosting process 12 of kilogram working medium is generally completed by a circulating pump, M2The boosting process 85 of kilogram working media is generally completed by a compressor; m1Depressurization of 34, M kilogram of working medium1Depressurization 56 of kilogram of working medium, also M2The decompression process 89 of the kilogram of working medium is generally carried out by an expander; the expansion work is larger than the pressure-raising power consumption, the heat-changing work is completed, the circulation net work is provided for the outside, and the single working medium steam combined circulation is formed.
The single-working-medium vapor combined cycle example in the T-s diagram of fig. 6 is performed as follows:
(1) from the cycle process:
working medium process-M1Boosting process of kilogram working medium condensate 12, M1Kilogram working medium heat absorption temperature rise, vaporization and overheating process 23, M1Decompression expansion process 34, M of kilogram working medium145, M kilogram working medium heat absorption temperature rise process2Kilogram working medium pressure-raising and temperature-raising process c5, M3The heat absorption and temperature rise process of kilogram working medium 56, the pressure reduction and expansion process of X kilogram working medium 69, (M)3-X) kilogram working medium endothermic heating Process 67, (M)3-X) kilogram working medium decompression expansion process 78, (M)3-X) kg working medium exothermic cooling process 89, M39c, M in kilogram working medium heat release and temperature reduction process1Kilogram working medium exothermal condensation process c 1-12 processes in total.
(2) From the energy conversion perspective:
① endothermic Process-M1Carrying out 23 processes and M on kilogram working media1Performing 45 processes and M on kilogram working medium356 processes and (M) are carried out in kg of working medium3-X) kg is processed 67 times, the heat absorption of the high temperature section of which is generally provided by an external heat source; the heat absorption of the low-temperature section is performed by an external heat source or (M)3-X) Process 89 with kg of working substance and M3The kilogram working medium is provided by the combined heat release (back heating) of the 9c process, or by the two.
② exothermic Process- (M)3X) exothermic reaction of 89 Processes with kg of working fluid and M3Kilogram working medium releases heat in the 9c process, corresponding heat requirements can be met, or part or most of heat absorption requirements for other processes of combined cycle can be met, and useless parts are released to a low-temperature heat source (such as environment); m1The kilogram working medium carries out heat release in the c1 process, and the heat release is generally released to a low-temperature heat source and provided to a heat user in the process of heat cogeneration.
③ energy conversion Process-M1The boosting process 12 of kilogram working medium is generally completed by a circulating pump, M2The boosting process c5 of kilogram working medium is generally completed by a compressor; m1Decompression of working medium kg 34, X working medium kg 69, (M)3-X) depressurization 78 of kg of working medium, typically by means of an expander; the expansion work is larger than the pressure-raising power consumption, the heat-changing work is completed, the circulation net work is provided for the outside, and the single working medium steam combined circulation is formed.
The single-working-medium vapor combined cycle example in the T-s diagram of fig. 7 is performed as follows:
(1) from the cycle process:
working medium process-M1Boosting process of kilogram working medium condensate 12, M1Mixing heat absorption temperature rise process 2b of kilogram working medium and M kilogram working medium, (M)1+ M) kilogram working medium endothermic heating, vaporization and superheating process b3 (M)1+ M) kilogram working medium depressurization expansion process 34, (M)1+ M) kilogram working medium heat absorption temperature rise process 45, M2Boosting and heating process of kilogram working medium 8a, M kilogram working medium and M1Ab (M) of the condensation process of the heat released by the mixture of kilograms of working medium2M) kilogram working medium pressure and temperature rising process a5, M356, M kilogram working medium heat absorption temperature rise process3Decompression expansion process of kilogram working medium 67, M378, M kilogram working medium heat release and temperature reduction process1Kilogram working medium exothermal condensation process 81-total 12 processes.
(2) From the energy conversion perspective:
① endothermic Process-M1Heat absorption of kilogram working medium in 2b process comes from mixed heat release of M kilogram superheated steam, M1B3 and 45 processes are carried out by kilogram working medium, and M is also carried out356 processes are carried out by kilogram working medium, the heat absorption of the high-temperature section is generally provided by an external heat source, and the heat absorption of the low-temperature section is provided by the external heat source or by M3The kilogram of working fluid is provided with the heat release (back heating) of the 78 process, or both.
② exothermic Process-M3Heat release in the 78 process is carried out by kilogram working media, corresponding heat requirements can be met, or partial or all heat absorption requirements for other processes of combined cycle can be met, and useless parts are released to a low-temperature heat source (such as environment); m1The heat release of 81 process is carried out by kilogram working medium, and the heat release is generally released to a low-temperature heat source and provided to a heat user during heat power combined supply.
③ energy conversion Process-M1The boosting process 12 of kilogram working medium is generally completed by a circulating pump, M2Boosting process 8a and (M) of kilogram working medium2M) the boosting process a5 of kg of working medium is generally carried out by a compressor; (M)1+ M) decompression of working medium 34, M3The decompression expansion process 67 of kilogram working medium is generally completed by an expansion machine; the expansion work is larger than the pressure-raising power consumption, the heat-changing work is completed, the circulation net work is provided for the outside, and the single working medium steam combined circulation is formed.
The single-working-medium vapor combined cycle example in the T-s diagram of fig. 8 is performed as follows:
(1) from the cycle process:
working medium process-M1Boosting process of kilogram working medium condensate 12, M1Mixing heat absorption temperature rise process 2b of kilogram working medium and M kilogram working medium, (M)1+ M) kilogram working medium endothermic heating, vaporization and superheating process b3 (M)1+ M) kilogram working medium depressurization expansion process 34, (M)1+ M) kilogram working medium heat absorption temperature rise process 45, (M)1+ M) kgWorking medium decompression expansion process 57, M2Boosting and temperature rising process of kilogram working medium 9a, M kilogram working medium and M1Ab (M) of the condensation process of the heat released by the mixture of kilograms of working medium2-M) kilogram working medium pressure and temperature rising process a6, (M)2-M) Heat absorption temperature increase Process for kilogram working Medium 67, M3Decompression expansion process 78, M with kilogram working medium389, M kilogram working medium heat release and temperature reduction process1And the kilogram working medium releases heat and is condensed 91-13 processes in total.
(2) From the energy conversion perspective:
① endothermic Process-M1The heat absorption of the kilogram working medium in the 2b process comes from the mixed heat release of M kilograms of superheated steam, (M)1+ M) kg of working medium for 23 and 45 processes, and also (M)2M) kg of working medium, the heat absorption of the high-temperature section of which is generally provided by an external heat source, and the heat absorption of the low-temperature section of which is provided by the external heat source or by M3The kilogram of working fluid is provided by heat release (recuperation) of 89 processes, or both.
② exothermic Process-M3Heat release in the 89 process is carried out by kilogram of working media, corresponding heat requirements can be met, or part or most of heat absorption requirements for other processes of combined cycle can be met, and useless parts are released to a low-temperature heat source (such as environment); m1The heat released in the process of 91 kg of working medium is generally released to a low-temperature heat source and is provided to a heat user during heat and power combined supply.
③ energy conversion Process-M1The boosting process 12 of kilogram working medium is generally completed by a circulating pump, M2Boosting process 9a and (M) with kilogram working medium2M) the boosting process a6 of kg of working medium is generally carried out by a compressor; (M)1+ M) decompression of working medium 34 (M)1+ M) decompression expansion process 57 of one kilogram of working medium, also M3The decompression expansion process 78 of kilogram of working medium is generally completed by an expander; the expansion work is larger than the pressure-raising power consumption, the heat-changing work is completed, the circulation net work is provided for the outside, and the single working medium steam combined circulation is formed.
The single-working-medium vapor combined cycle example in the T-s diagram of fig. 9 is performed as follows:
(1) from the cycle process:
working medium process-M1Boosting process of kilogram working medium condensate 12, M1Mixing heat absorption temperature rise process 2b of kilogram working medium and M kilogram working medium, (M)1+ M) kilogram working medium endothermic heating, vaporization and superheating process b3 (M)1+ M) kilogram working medium depressurization expansion process 34, (M)1+ M) kilogram working medium heat absorption temperature rise process 47, M2Boosting and temperature rising process of kilogram working medium 9a, M kilogram working medium and M1Ab (M) of the condensation process of the heat released by the mixture of kilograms of working medium2-M) kilogram working medium pressure and temperature rising process a5, (M)2-M) Heat absorption and temperature increase Process 56 with kilogram working Medium (M)2-M) kilogram working medium depressurization expansion Process 67, M3Decompression expansion process 78, M with kilogram working medium389, M kilogram working medium heat release and temperature reduction process1And the kilogram working medium releases heat and is condensed 91-13 processes in total.
(2) From the energy conversion perspective:
① endothermic Process-M1The heat absorption of the kilogram working medium in the 2b process comes from the mixed heat release of M kilograms of superheated steam, (M)1+ M) kg of working medium for processes b3 and 47, and also (M)2M) kg of working medium, the heat absorption of the high-temperature section of which is generally provided by an external heat source, and the heat absorption of the low-temperature section of which is provided by the external heat source or by M3The kilogram of working fluid is provided by heat release (recuperation) of 89 processes, or both.
② exothermic Process-M3Heat release in the 89 process is carried out by kilogram of working media, corresponding heat requirements can be met, or part or most of heat absorption requirements for other processes of combined cycle can be met, and useless parts are released to a low-temperature heat source (such as environment); m1The heat released in the process of 91 kg of working medium is generally released to a low-temperature heat source and is provided to a heat user during heat and power combined supply.
③ energy conversion Process-M1The boosting process 12 of kilogram working medium is generally completed by a circulating pump, M2Boosting process 9a and (M) with kilogram working medium2M) the boosting process a5 of kg of working medium is generally carried out by a compressor; (M)1+ M) decompression of working medium 34 (M)2-M) decompression expansion process of kilogram working medium67, also M3The decompression expansion process 78 of kilogram of working medium is generally completed by an expander; the expansion work is larger than the pressure-raising power consumption, the heat-changing work is completed, the circulation net work is provided for the outside, and the single working medium steam combined circulation is formed.
The single-working-medium vapor combined cycle example in the T-s diagram of fig. 10 is performed as follows:
(1) from the cycle process:
working medium process-M1Boosting process of kilogram working medium condensate 12, M1Mixing heat absorption temperature rise process 2b of kilogram working medium and M kilogram working medium, (M)1+ M) kilogram working medium endothermic heating, vaporization and superheating process b3 (M)1+ M) kilogram working medium depressurization expansion process 34, (M)1+ M) kilogram working medium heat absorption temperature rise process 45, (M)1+ M) kilogram working medium depressurization expansion process 59, M2Boosting and heating process of kilogram working medium ca, M kilogram working medium and M1Ab (M) of the condensation process of the heat released by the mixture of kilograms of working medium2-M) kilogram working medium pressure and temperature rising process a6, (M)2-M) kilogram working medium endothermic heating process 67, (M)2-M) kilogram working medium depressurization expansion process 78, (M)2-M) kg of working medium exothermic cooling process 89, M39c, M in kilogram working medium heat release and temperature reduction process1Kilogram working medium exothermal condensation process c 1-14 processes in total.
(2) From the energy conversion perspective:
① endothermic Process-M1The heat absorption of the kilogram working medium in the 2b process comes from the mixed heat release of M kilograms of superheated steam, (M)1+ M) kg of working medium for processes b3 and 45, and also (M)2M) one kilogram of working medium is subjected to a 67 process, the heat absorption of the high-temperature section of which is generally provided by an external heat source; the heat absorption of the low-temperature section is performed by an external heat source or (M)2M) Process 89 with kg of working substance3The kilogram working medium is provided by the combined heat release (back heating) of the 9c process, or by the two.
② exothermic Process- (M)2M) exothermic heat of 89 processes per kilogram of working fluid and M3The kilogram working medium carries out the heat release of the 9c process, can provide the heat to the outside to meet the corresponding heat requirement, or is partially or mostly used for combined cycle otherThe endothermic demand of the process, the release of the waste to a low temperature heat source (e.g., ambient); m1The kilogram working medium carries out heat release in the c1 process, and the heat release is generally released to a low-temperature heat source and provided to a heat user in the process of heat cogeneration.
③ energy conversion Process-M1The boosting process 12 of kilogram working medium is generally completed by a circulating pump, M2Boosting process of kilogram working medium ca and (M)2M) the boosting process a6 of kg of working medium is generally carried out by a compressor; (M)1+ M) decompression of working medium 34 (M)1+ M) decompression process 59 and (M) kg of working medium2-M) depressurization 78 of kg of working medium, typically by means of an expander; the expansion work is larger than the pressure-raising power consumption, the heat-changing work is completed, the circulation net work is provided for the outside, and the single working medium steam combined circulation is formed.
The single-working-medium vapor combined cycle example in the T-s diagram of fig. 11 is performed as follows:
(1) from the cycle process:
working medium process-M1Boosting process of kilogram working medium condensate 12, M1Mixing heat absorption temperature rise process 2b of kilogram working medium and M kilogram working medium, (M)1+ M) kilogram working medium endothermic heating, vaporization and superheating process b3 (M)1+ M) kilogram working medium depressurization expansion process 34, (M)1+ M) kilogram working medium heat absorption temperature rise process 45, (M)1+ M) kilogram working medium depressurization expansion Process 56, (M)1+ M) kilogram working medium exothermic cooling process 69, M2Boosting and heating process of kilogram working medium ca, M kilogram working medium and M1Ab (M) of the condensation process of the heat released by the mixture of kilograms of working medium2-M) kilogram working medium pressure and temperature rising process a7, (M)2-M) Heat absorption and temperature increase Process 78 with kg working Medium (M)2-M) kilogram working medium decompression expansion Process 89, M39c, M in kilogram working medium heat release and temperature reduction process1Kilogram working medium exothermal condensation process c1 — 14 processes in total.
(2) From the energy conversion perspective:
① endothermic Process-M1The heat absorption of the kilogram working medium in the 2b process comes from the mixed heat release of M kilograms of superheated steam, (M)1+ M) kg of working medium for processes b3 and 45, and also (M)2M) one kilogram of working medium is subjected to a process 78, the heat absorption of the high-temperature section of which is generally provided by an external heat source; the heat absorption of the low-temperature section is performed by an external heat source or (M)1+ M) kg working medium 69 and M3The kilogram working medium is provided by the combined heat release (back heating) of the 9c process, or by the two.
② exothermic Process- (M)1+ M) exothermic heat release from 69 kg working fluid and M3Kilogram working medium releases heat in the 9c process, corresponding heat requirements can be met, or part or most of heat absorption requirements for other processes of combined cycle can be met, and useless parts are released to a low-temperature heat source (such as environment); m1The kilogram working medium carries out heat release in the c1 process, and the heat release is generally released to a low-temperature heat source and provided to a heat user in the process of heat cogeneration.
③ energy conversion Process-M1The boosting process 12 of kilogram working medium is generally completed by a circulating pump, M2Boosting process of kilogram working medium ca and (M)2M) the boosting process a7 of kg of working medium is generally carried out by a compressor; (M)1+ M) decompression of working medium 34 (M)1+ M) kg of working medium depressurization 56, and also (M)2-M) depressurization 89 of one kilogram of working medium, typically by means of an expander; the expansion work is larger than the pressure-raising power consumption, the heat-changing work is completed, the circulation net work is provided for the outside, and the single working medium steam combined circulation is formed.
The single-working-medium vapor combined cycle example in the T-s diagram of fig. 12 is performed as follows:
(1) from the cycle process:
working medium process-M1Boosting process of kilogram working medium condensate 12, M1Mixing heat absorption temperature rise process 2b of kilogram working medium and M kilogram working medium, (M)1+ M) kilogram working medium endothermic heating, vaporization and superheating process b3 (M)1+ M) kilogram working medium depressurization expansion process 34, (M)1+ M) kilogram working medium heat absorption temperature rise process 45, M2Boosting and heating process of kilogram working medium ca, M kilogram working medium and M1Ab (M) of the condensation process of the heat released by the mixture of kilograms of working medium2M) kilogram working medium pressure and temperature rising process a5, M3The heat absorption and temperature rise process of one kilogram of working medium is 56, and the temperature drop of X kilogram of working mediumPressure expansion Process 69, (M)3-X) kilogram working medium endothermic heating Process 67, (M)3-X) kilogram working medium decompression expansion process 78, (M)3-X) kg working medium exothermic cooling process 89, M39c, M in kilogram working medium heat release and temperature reduction process1Kilogram working medium exothermal condensation process c1 — 15 processes in total.
(2) From the energy conversion perspective:
① endothermic Process-M1The heat absorption of the kilogram working medium in the 2b process comes from the mixed heat release of M kilograms of superheated steam, (M)1+ M) kg of working medium for processes b3 and 45, M356 processes are carried out per kilogram of working medium, also (M)3-X) kg is processed 67 times, the heat absorption of the high temperature section of which is generally provided by an external heat source; the heat absorption of the low-temperature section is performed by an external heat source or (M)3-X) Process 89 with kg of working substance and M3The kilogram working medium is provided by the combined heat release (back heating) of the 9c process, or by the two.
② exothermic Process- (M)3X) exothermic reaction of 89 Processes with kg of working fluid and M3Kilogram working medium releases heat in the 9c process, corresponding heat requirements can be met, or part or most of heat absorption requirements for other processes of combined cycle can be met, and useless parts are released to a low-temperature heat source (such as environment); m1The kilogram working medium carries out heat release in the c1 process, and the heat release is generally released to a low-temperature heat source and provided to a heat user in the process of heat cogeneration.
③ energy conversion Process-M1The boosting process 12 of kilogram working medium is generally completed by a circulating pump, M2Boosting process of kilogram working medium ca and (M)2M) the boosting process a5 of kg of working medium is generally carried out by a compressor; (M)1+ M) kg of working medium 34, X kg of working medium 69, and (M)3-X) depressurization 78 of kg of working medium, typically by means of an expander; the expansion work is larger than the pressure-raising power consumption, the heat-changing work is completed, the circulation net work is provided for the outside, and the single working medium steam combined circulation is formed.
The effect that the technology of the invention can realize-the single working medium steam combined cycle provided by the invention has the following effects and advantages:
(1) creating a thermal energy (temperature difference) utilization basic theory.
(2) The heat load in the phase change heat absorption process is greatly reduced, the heat absorption load in a high-temperature section is relatively increased, and the heat efficiency is high.
(3) The method is simple, reasonable in flow and good in applicability, and is a common technology for realizing effective utilization of temperature difference.
(4) The single working medium is beneficial to production and storage; reduce the running cost and improve the flexibility of circulation regulation
(5) The process is shared, the process is reduced, and a theoretical basis is provided for reducing equipment investment.
(6) In the high-temperature zone or the variable-temperature zone, the circulating medium and the heat source medium are in the variable-temperature process, so that the temperature difference heat transfer loss in the heat absorption link is reduced, and the heat efficiency is improved.
(7) The low-pressure high-temperature operation mode is adopted in the high-temperature area, so that the contradiction that the heat efficiency, the circulating medium parameters and the pressure and temperature resistance of the pipe are difficult to reconcile in the traditional steam power device is solved.
(8) On the premise of realizing high thermal efficiency, low-pressure operation can be selected, and theoretical support is provided for improving the operation safety of the device.
(9) The working medium has wide application range, can well adapt to energy supply requirements, and is flexibly matched with working parameters.
(10) The thermodynamic cycle range for realizing temperature difference utilization is expanded, and efficient power utilization of a high-temperature heat source and a variable-temperature heat source is favorably realized.

Claims (12)

1. Single working medium steam combined cycle, is formed from M1Kilogram and M2Working medium composed of kilogram, nine processes carried out separately or together-M1Step-up process of working medium kilogram 12, M1Heat absorption and vaporization process 23, M of kilogram working medium1Decompression process 34, M of kilogram working medium145, M kilogram working medium heat absorption process2Boosting process of 85, M for kilogram working medium356, M kilogram working medium heat absorption process3Decompression process with kilogram working medium 67, M378, M, kilogram working medium heat release process1Condensation process 81-by heat release of kilogram working medium-the closure process of the composition; wherein M is3Is M1And M2And (4) summing.
2. Single working medium steam combined cycle, is formed from M1Kilogram and M2Ten processes carried out separately or together-M1Step-up process of working medium kilogram 12, M1Heat absorption and vaporization process 23, M of kilogram working medium1Decompression process 34, M of kilogram working medium145, M kilogram working medium heat absorption process1Decompression process 57, M with kilogram working medium296, M kilogram working medium boosting process2Kilogram working medium endothermic process 67, M3Decompression process 78, M with kilogram working medium389, M kilogram working medium heat release process1Kilogram working medium heat release condensation process 91-a closed process of composition; wherein M is3Is M1And M2And (4) summing.
3. Single working medium steam combined cycle, is formed from M1Kilogram and M2Ten processes carried out separately or together-M1Step-up process of working medium kilogram 12, M1Heat absorption and vaporization process 23, M of kilogram working medium1Decompression process 34, M of kilogram working medium147, M kilogram working medium heat absorption process2Step-up process of 95, M for kilogram working medium256, M kilogram working medium heat absorption process2Decompression process with kilogram working medium 67, M3Decompression process 78, M with kilogram working medium389, M kilogram working medium heat release process1Kilogram working medium heat release condensation process 91-a closed process of composition; wherein M is3Is M1And M2And (4) summing.
4. Single working medium steam combined cycle, is formed from M1Kilogram and M2Working medium composed of kilogram, eleven processes carried out separately or together-M1Step-up process of working medium kilogram 12, M1Heat absorption and vaporization process 23, M of kilogram working medium1Decompression process 34, M of kilogram working medium145, M kilogram working medium heat absorption process1Decompression process 59, M with kilogram working medium2Kilogram working medium boosting process c6, M2Kilogram working medium endothermic process 67, M2Decompression process 78, M with kilogram working medium289, M kilogram working medium heat release process3Kilogram working medium heat release process 9c, M1Kilogram working medium exothermal condensation process c 1-the closed process of component; wherein M is3Is M1And M2And (4) summing.
5. Single working medium steam combined cycle, is formed from M1Kilogram and M2Working medium composed of kilogram, eleven processes carried out separately or together-M1Step-up process of working medium kilogram 12, M1Heat absorption and vaporization process 23, M of kilogram working medium1Decompression process 34, M of kilogram working medium145, M kilogram working medium heat absorption process1Decompression process 56, M of kilogram working medium1Kilogram working medium heat release process 69, M2Kilogram working medium boosting process c7, M278, M, kilogram working medium heat absorption process2Decompression process 89, M with kilogram working medium3Kilogram working medium heat release process 9c, M1Kilogram working medium exothermal condensation process c 1-the closed process of component; wherein M is3Is M1And M2And (4) summing.
6. Single working medium steam combined cycle, is formed from M1Kilogram and M2Working medium composed of kilograms of composition, twelve processes carried out separately or together or in part-M1Step-up process of working medium kilogram 12, M1Heat absorption and vaporization process 23, M of kilogram working medium1Decompression process 34, M of kilogram working medium145, M kilogram working medium heat absorption process2Kilogram working medium boosting process c5, M3Kilogram working medium heat absorption process 56, X kilogram working medium pressure reduction process 69, (M)3-X) kilogram working substance endotherm 67, (M)3-X) decompression Process 78 with kg of working substance, (M)3-X) kilogram working substance exothermic Process 89, M3Kilogram working medium heat release process 9c, M1Kilogram working medium exothermal condensation process c 1-the closed process of component; wherein M is3Is M1And M2And (4) summing.
7. Single working medium steam combined cycle, is formed from M1Kilogram and M2Working medium composed of kilograms of composition, twelve processes carried out separately or together or in part-M1Step-up process of working medium kilogram 12, M1Kilogram working medium heat absorption process 2b, (M)1+ M) kilogram working medium endothermic vaporization process b3, (M)1+ M) kilogram working medium depressurization 34, (M)1+ M) kilogram working medium endothermic process 45, M28a in kilogram working medium boosting process, ab in M kilogram working medium heat releasing condensation process, (M)2M) kilogram working medium pressure rise process a5, M356, M kilogram working medium heat absorption process3Decompression process with kilogram working medium 67, M378, M, kilogram working medium heat release process1Kilogram working medium heat release condensation process 81-a closed process of composition; wherein M is3Is M1And M2And (4) summing.
8. Single working medium steam combined cycle, is formed from M1Kilogram and M2Working substances in kilogram composition, thirteen processes carried out individually or jointly or in part-M1Step-up process of working medium kilogram 12, M1Kilogram working medium heat absorption process 2b, (M)1+ M) kilogram working medium endothermic vaporization process b3, (M)1+ M) kilogram working medium depressurization 34, (M)1+ M) kilogram working medium endothermic process 45, (M)1+ M) kilogram working medium depressurization 57, M2Kilogram working medium boosting process 9a, M kilogram working medium heat release condensation process ab, (M)2M) kilogram working medium pressure increasing process a6, (M)2-M) kilogram working substance endothermic process 67, M3Decompression process 78, M with kilogram working medium389, M kilogram working medium heat release process1Kilogram working medium heat release condensation process 91-a closed process of composition; wherein M is3Is M1And M2And (4) summing.
9. Single working medium steam combined cycle, is formed from M1Kilogram and M2Working substances in kilogram composition, thirteen processes carried out individually or jointly or in part-M1Step-up process of working medium kilogram 12, M1Kilogram working medium heat absorption process 2b, (M)1+ M) kilogram working medium suctionThermal vaporization process b3, (M)1+ M) kilogram working medium depressurization 34, (M)1+ M) kilogram working medium endothermic process 47, M2Kilogram working medium boosting process 9a, M kilogram working medium heat release condensation process ab, (M)2M) kilogram working medium pressure increasing process a5, (M)2M) kilogram working medium endothermic Process 56, (M)2-M) depressurization of 67, M) kg of working medium3Decompression process 78, M with kilogram working medium389, M kilogram working medium heat release process1Kilogram working medium heat release condensation process 91-a closed process of composition; wherein M is3Is M1And M2And (4) summing.
10. Single working medium steam combined cycle, is formed from M1Kilogram and M2Working medium composed of kilograms of composition, fourteen processes carried out separately or together or partially-M1Step-up process of working medium kilogram 12, M1Kilogram working medium heat absorption process 2b, (M)1+ M) kilogram working medium endothermic vaporization process b3, (M)1+ M) kilogram working medium depressurization 34, (M)1+ M) kilogram working medium endothermic process 45, (M)1+ M) kilogram working medium depressurization process 59, M2Kilogram working medium boosting process ca, M kilogram working medium heat releasing condensation process ab, (M)2M) kilogram working medium pressure increasing process a6, (M)2-M) kilogram working substance endothermic process 67, (M)2-M) kilogram working medium depressurization 78, (M)2-M) kilogram working medium exothermic Process 89, M3Kilogram working medium heat release process 9c, M1Kilogram working medium exothermal condensation process c 1-the closed process of component; wherein M is3Is M1And M2And (4) summing.
11. Single working medium steam combined cycle, is formed from M1Kilogram and M2Working medium composed of kilograms of composition, fourteen processes carried out separately or together or partially-M1Step-up process of working medium kilogram 12, M1Kilogram working medium heat absorption process 2b, (M)1+ M) kilogram working medium endothermic vaporization process b3, (M)1+ M) kilogram working medium depressurization 34, (M)1+ M) kilogram working medium endothermic process 45, (M)1+ M) kilogram working medium depressurization 56 (M)1+ M) kilogram toolsExothermic process 69, M2Kilogram working medium boosting process ca, M kilogram working medium heat releasing condensation process ab, (M)2M) kilogram working medium pressure increasing process a7, (M)2-M) kilogram working medium endothermic Process 78, (M)2-M) decompression Process 89, M) with kg of working substance3Kilogram working medium heat release process 9c, M1Kilogram working medium exothermal condensation process c 1-the closed process of component; m3Is M1And M2And (4) summing.
12. Single working medium steam combined cycle, is formed from M1Kilogram and M2Working medium composed of kilograms of composition, fifteen processes carried out separately or together or partially-M1Step-up process of working medium kilogram 12, M1Kilogram working medium heat absorption process 2b, (M)1+ M) kilogram working medium endothermic vaporization process b3, (M)1+ M) kilogram working medium depressurization 34, (M)1+ M) kilogram working medium endothermic process 45, M2Kilogram working medium boosting process ca, M kilogram working medium heat releasing condensation process ab, (M)2M) kilogram working medium pressure rise process a5, M3Kilogram working medium heat absorption process 56, X kilogram working medium pressure reduction process 69, (M)3-X) kilogram working substance endotherm 67, (M)3-X) decompression Process 78 with kg of working substance, (M)3-X) kilogram working substance exothermic Process 89, M3Kilogram working medium heat release process 9c, M1Kilogram working medium exothermal condensation process c 1-the closed process of component; wherein M is3Is M1And M2And (4) summing.
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