CN115263472A - Single working medium steam combined cycle - Google Patents

Single working medium steam combined cycle Download PDF

Info

Publication number
CN115263472A
CN115263472A CN202010931869.3A CN202010931869A CN115263472A CN 115263472 A CN115263472 A CN 115263472A CN 202010931869 A CN202010931869 A CN 202010931869A CN 115263472 A CN115263472 A CN 115263472A
Authority
CN
China
Prior art keywords
working medium
kilogram
kilogram working
heat
heat release
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010931869.3A
Other languages
Chinese (zh)
Inventor
李鸿瑞
李华玉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of CN115263472A publication Critical patent/CN115263472A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • 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
    • 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
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
    • F25B9/14—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the cycle used, e.g. Stirling cycle

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)
  • Lubricants (AREA)

Abstract

The invention provides a single working medium steam combined cycle, and belongs to the technical field of energy and power. Is defined by M1Kilogram and M2Kilogram formed working medium, nine processes carried out separately or together-M1Boosting process of working medium kilogram 12,M1The kilogram working medium absorbs heat and is vaporized 23,M134,M of kilogram working medium decompression process2Kilogram working medium boost process 74, (M)1+M2) Kilogram working medium endothermic process 45, (M)1+M2) Kilogram working medium depressurization 56 (M)1+M2) Heat release process of kilogram working medium 67,M1Decompression process 78, M with kilogram working medium1Kilogram working medium exothermic condensation process 81-the closed process of composition.

Description

Single working medium steam combined cycle
The technical field is as follows:
the invention belongs to the technical field of energy and power.
The background art comprises the following steps:
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 heat variable power, 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 of materials and safety, so that the heat efficiency is low.
In reality, 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 the support of the basic theory of thermal science; 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-M1Boosting process of working medium kilogram 12,M1The kilogram working medium absorbs heat and is vaporized 23,M134, M step-down process of kilogram working medium2Kilogram working medium boost process 74, (M)1+M2) Kilogram working medium endothermic process 45, (M)1+M2) Kilogram working medium depressurization 56 (M)1+M2) Heat release process of kilogram working medium 67,M1Decompression process 78, M with kilogram working medium1Kilogram working medium heat release condensation process 81-a closed process of composition.
2. Single working medium steam combined cycle, is formed from M1Kilogram and M2Working medium composed of kilograms of (kg) of (g) a respective or co-operating twelve processes-M1Boosting process of working medium kilogram 12,M1Kilogram working medium heat absorption vaporization process 23,M134, M step-down process of kilogram working medium2Kilogram working medium boost process 94, (M)1+M2) 45 kg of working medium for heat absorption, 58 (M) for pressure reduction1+M2-X) kilogram working substance endothermic process 56, (M)1+M2-X) decompression Process 67 with kg of working substance, (M)1+M2X) kilogram working medium exothermic process 78, (M)1+M2) 89, M kilogram working medium heat release process1Decompression process of kilogram working medium 9c, M1Kilogram working medium exothermal condensation process c 1-the closed process of composition.
3. Single working medium steam combined cycle, meaning consisting of M1Kilogram and M2Working medium composed of kilograms of (kg) of (g) a respective or co-operating twelve processes-M1Boosting 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 process 34, M2Kilogram working medium pressure increasing process 7a, M kilogram working medium heat releasing condensation process ab, (M)2M) kg working medium pressure increase process a4, (M)1+M2) Kilogram working medium endothermic process 45, (M)1+M2) Kilogram working medium depressurization 56 (M)1+M2) Heat release process of kilogram working medium 67,M1Decompression process 78, M with kilogram working medium1Kilogram working medium heat release condensation process 81-a closed process of composition.
4. Single working medium steam combined cycle, is formed from M1Kilogram and M2Working medium composed of kilogram, fifteen processes carried out separately or together-M1Kilogram working medium pressure increasing process 12,M1Kilogram working medium endothermic process 2b, (M)1+ M) kilogram working medium endothermic evaporation process b3，(M1+ M) kilogram working medium depressurization process 34, M2Kilogram working medium boosting process 9a, M kilogram working medium heat releasing condensation process ab, (M)2-M) kilogram working medium boosting process a4, (M)1+M2) Kilogram working medium heat absorption process 45, X kilogram working medium pressure reduction process 58, (M)1+M2-X) kilogram working substance endothermic process 56, (M)1+M2-X) decompression Process 67 with kg of working substance, (M)1+M2X) kilogram working medium exothermic process 78, (M)1+M2) Kilogram working medium heat release process 89,M1Decompression process of kilogram working medium 9c, M1Kilogram working medium exothermal condensation process c 1-the closed process of composition.
5. Single working medium steam combined cycle, is formed from M1Kilogram and M2Ten processes carried out separately or together-M1Boosting process of working medium kilogram 12,M1The kilogram working medium absorbs heat and is vaporized 23,M134,M of kilogram working medium decompression process2Kilogram working medium boost process 74, (M)1+M2) Kilogram working medium endothermic process 45, (M)1+M2) Kilogram working medium depressurization 56 (M)1+M2) Heat release process of kilogram working medium 67,M1Heat release process 78,M of kilogram working medium1Decompression of 89 kg of working medium1Kilogram working medium heat release condensation process 91-the closed process of composition.
6. Single working medium steam combined cycle, is formed from M1Kilogram and M2Kilogram formed working medium, thirteen processes carried out separately or together-M1Boosting process of working medium kilogram 12,M1The kilogram working medium absorbs heat and is vaporized 23,M134, M step-down process of kilogram working medium2Kilogram working medium boost process 94, (M)1+M2) 45 kg of working medium for heat absorption, 58 (M) for pressure reduction1+M2-X) kilogram working substance endothermic process 56, (M)1+M2-X) kg working medium depressurization 67, (M)1+M2X) kilogram working medium exothermic process 78, (M)1+M2) Kilogram working medium heat release process 89,M1Exothermic process 9c, M with kilogram working medium1Kilogram working mediumPressing Process cd, M1Kilogram working medium heat release condensation process d 1-the closed process of composition.
7. Single working medium steam combined cycle, is formed from M1Kilogram and M2Thirteen processes carried out separately or together-M1Kilogram working medium pressure increasing process 12,M1Kilogram working medium endothermic process 2b, (M)1+ M) kilogram working medium endothermic vaporization process b3, (M)1+ M) kg working medium depressurization process 34, M2Kilogram working medium pressure increasing process 7a, M kilogram working medium heat releasing condensation process ab, (M)2-M) kilogram working medium boosting process a4, (M)1+M2) Kilogram working medium endothermic process 45, (M)1+M2) Kilogram working medium depressurization 56 (M)1+M2) Heat release process of kilogram working medium 67,M1Heat release process 78,M of kilogram working medium1Decompression process with kilogram working medium 89,M1Kilogram working medium heat release condensation process 91-the closed process of composition.
8. Single working medium steam combined cycle, is formed from M1Kilogram and M2Working medium composed of kilogram, sixteen processes-M carried out separately or together1Boosting 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) kg working medium depressurization process 34, M2Kilogram working medium boosting process 9a, M kilogram working medium heat releasing condensation process ab, (M)2-M) kilogram working medium boosting process a4, (M)1+M2) Kilogram working medium heat absorption process 45, X kilogram working medium pressure reduction process 58, (M)1+M2-X) kilogram working substance endothermic process 56, (M)1+M2-X) kg working medium depressurization 67, (M)1+M2-X) kilogram working medium exothermic process 78, (M)1+M2) Kilogram working medium heat release process 89,M1Exothermic process 9c, M with kilogram working medium1The blood pressure lowering process cd, M with kilogram working medium1Kilogram working medium exothermal condensation process d 1-the closed process of component.
9. Single working medium steam combined cycle, is formed from M1Kilogram and M2Working substances in kilogram composition, ten processes carried out separately or togetherstroke-M1Boosting process of working medium kilogram 12,M1Kilogram working medium heat absorption vaporization process 23,M134,M of kilogram working medium decompression process2Kilogram working medium boosting process 84, (M)1+M2) Kilogram working medium endothermic process 45, (M)1+M2) Kilogram working medium depressurization 56 (M)1+M2) Heat release process of kilogram working medium 67,M278, M heat release process of kilogram working medium1Decompression process 79,M of kilogram working medium1Kilogram working medium exothermic condensation process 91-the closed process of composition.
10. Single working medium steam combined cycle, is formed from M1Kilogram and M2Thirteen processes carried out separately or together-M1Kilogram working medium pressure increasing process 12,M1Kilogram working medium heat absorption vaporization process 23,M134,M of kilogram working medium decompression process2Kilogram working medium boosting process c4, (M)1+M2) 45 kg of working medium for heat absorption, 58 (M) for pressure reduction1+M2-X) kilogram of working fluid endothermic process 56, (M)1+M2-X) decompression Process 67 with kg of working substance, (M)1+M2X) kilogram working medium exothermic process 78, (M)1+M2) Kilogram working medium heat release process 89,M2Exothermic process 9c, M in kilogram working medium1The blood pressure lowering process cd, M with kilogram working medium1Kilogram working medium heat release condensation process d 1-the closed process of composition.
11. Single working medium steam combined cycle, is formed from M1Kilogram and M2Thirteen processes carried out separately or together-M1Boosting 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 process 34, M2Pressure raising process of working medium kilogram 8a, heat releasing and condensing process of working medium M kilogram ab (M)2-M) kilogram working medium boosting process a4, (M)1+M2) Kilogram working medium endothermic process 45, (M)1+M2) Kilogram working medium depressurization 56 (M)1+M2) Heat release process of kilogram working medium 67,M2Heat release of kilogram working mediumProcess 78, M179, M in the process of reducing pressure by kilogram working medium1Kilogram working medium heat release condensation process 91-the closed process of composition.
12. Single working medium steam combined cycle, is formed from M1Kilogram and M2Working medium composed of kilogram, sixteen processes-M carried out separately or together1Boosting 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 process 34, M2Kilogram working medium boosting process ca, M kilogram working medium heat releasing condensation process ab, (M)2-M) kilogram working medium boosting process a4, (M)1+M2) 45 kg of working medium for heat absorption, 58 (M) for pressure reduction1+M2-X) kilogram of working fluid endothermic process 56, (M)1+M2-X) decompression Process 67 with kg of working substance, (M)1+M2X) kilogram working medium exothermic process 78, (M)1+M2) Kilogram working medium heat release process 89,M2Exothermic process 9c, M with kilogram working medium1Decompression process 9d, M with kilogram working medium1Kilogram working medium heat release condensation process d 1-the closed process of composition.
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 illustration of a 3 rd principle flow scheme of a single-working-medium steam 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 a 5 th principle flow of a single-working-medium vapor combined cycle according to the present invention.
FIG. 6 is an exemplary diagram of a 6 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 flow diagram illustrating an exemplary 12 th principle process of a single-working-medium steam combined cycle according to the present invention
The specific implementation mode is as follows:
it is to be noted that, in the description of the structure and the flow, the repetition is not necessary; obvious procedures are not described. 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,M1The kilogram working medium absorbs heat to heat, vaporize and overheat 231Decompression expansion process 34, M of kilogram working medium2Kilogram working medium pressure raising and temperature raising process 74, (M)1+M2) Kilogram working medium heat absorption temperature rise process 45, (M)1+M2) Kilogram working medium decompression expansion Process 56, (M)1+M2) Kilogram working medium heat release and temperature reduction process 67, M1Decompression expansion process 78, M with kilogram working medium1Kilogram working medium exothermal condensation process 81-9 processes in total.
(2) From the energy conversion perspective:
(1) endothermic process-M1Process 23 and (M) in kg of working medium1+M2) The 45 process is 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 (M)1+M2) Kilogram (kilogram)The working medium is supplied by heat release (regenerative) of 67 processes or by both an external heat source and regenerative heat of the working medium.
(2) Exothermic Process- (M)1+M2) The kilogram working medium is used for heat release in the 67 process, so that corresponding heat requirements can be met, or part or all 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 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 74 of kilograms of working fluid is typically accomplished by a compressor; m1Decompression expansion process 34 of kilogram working medium, (M)1+M2) Decompression expansion process 56 of kilogram working medium, and M1The kilogram working medium decompression expansion process 78 is generally completed by an expansion machine; the expansion work is larger than the pressure rise power consumption, the heat work change 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,M1The kilogram working medium absorbs heat to heat, vaporize and overheat 231Decompression expansion process 34, M with kilogram working medium2Kilogram working medium pressure-rising and temperature-rising process 94, (M)1+M2) 45 kg working medium heat absorption and temperature rise process, 58 (M) X kg working medium decompression and expansion process1+M2-X) Heat absorption and temperature increase Process 56 with kilogram working Medium, (M)1+M2-X) kilogram working medium decompression expansion Process 67, (M)1+M2-X) kilogram working medium thermal cooling process 78, (M)1+M2) 89 m, kilogram working medium heat release and temperature reduction process1Decompression expansion process 9c, M with kilogram working medium1Kilogram working medium exothermal condensation process c 1-12 processes in total.
(2) From the energy conversion perspective:
(1) absorbing heatProcess-M1Carrying out 23 processes (M) by kg of working medium1+M2) 45 processes and (M) are carried out per kilogram of working medium1+M2X) kg is processed 56, 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 (M)1+M2X) Process 78 with (M) kg of working substance1+M2) The kilogram of working medium is provided by heat release (backheating) of 89 processes, or by an external heat source and the working medium backheating.
(2) Exothermic Process- (M)1+M2X) exothermic heat of 78 kg of working fluid and (M)1+M2) Heat release in the 89 process is carried out by kilogram working medium, corresponding heat requirements can be met, or partial 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); m is a group of1And (3) heat release of the kilogram working medium in the c1 process is generally released to a low-temperature heat source, and heat is provided to a heat user during combined heat and power supply.
(3) Energy conversion Process-M1The boosting process 12 of kilogram working medium is generally completed by a circulating pump, M2The boosting 94 of kilogram of working fluid is typically accomplished by a compressor; m1Decompression expansion process 34 for kg of working medium, decompression expansion process 58 for X kg of working medium, (M)1+M2X) decompression expansion process 67 of kg working medium, and also M1The kilogram working medium decompression expansion process 9c 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. 3 is performed as follows:
(1) From the circulation process:
working medium process-M1Pressure raising process of kilogram working medium condensate 12,M1Kilogram working medium heat absorption temperature rise process 2b, (M)1+ M) kilogram working medium absorbs heat to raise temperature, vaporize and overheat process b3, (M)1+ M) kilogram working medium decompression expansion process 342Kilogram working medium pressure-raising and temperature-raising process 7a, M kilogram working medium and M1Mixed heat release and cooling of kilogram working mediumProcess ab, (M)2-M) kg working medium pressure and temperature rising process a4, (M)1+M2) Kilogram working medium heat absorption temperature rise process 45, (M)1+M2) Decompression expansion Process 56 with kilogram working Medium, (M)1+M2) Kilogram working medium heat release and temperature reduction process 67, M1Decompression expansion process 78, M with kilogram working medium1Kilogram working medium exothermal condensation process 81-12 processes in total.
(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 process and (M) in kg of working medium1+M2) The 45 process is 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 (M)1+M2) The kilogram of working medium is provided by heat release (backheating) of the 67 processes, or by the combination of an external heat source and the backheating of the working medium.
(2) Exothermic Process- (M)1+M2) The kilogram working medium is used for heat release in the 67 process, so that corresponding heat requirements can be met, or part or all 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 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 kg of working medium is generally carried out by means of a circulation pump, M2Boosting processes 7a and (M) of kg working medium2M) boosting process a4 of kg of working medium is generally carried out by a compressor; (M)1+ M) decompression expansion process 34 of kilogram working medium, (M)1+M2) Decompression expansion process 56 of kg working medium, also M1The kilogram working medium decompression expansion process 78 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. 4 is performed as follows:
(1) From the circulation process:
working medium process-M1Boosting process of kilogram working medium condensate 12,M1Kilogram working medium heat absorption temperature rise process 2b, (M)1+ M) kilogram working medium absorbs heat to raise temperature, vaporize and overheat process b3, (M)1+ M) kilogram working medium decompression expansion process 342Step-up and temperature-up process 9a of kilogram working medium, M kilogram working medium and M1Ab (M) of the condensation process of heat release of the mixture of kilograms of working substances2-M) kilogram working medium pressure and temperature rising process a4, (M)1+M2) Kilogram working medium absorbs heat and rises temperature 45, X kilogram working medium reduces pressure and expands process 58, (M)1+M2-X) kilogram working medium endothermic heating process 56, (M)1+M2-X) kilogram working medium decompression expansion Process 67, (M)1+M2-X) kilogram working medium exothermic cooling process 78, (M)1+M2) 89, M in the heat release and temperature reduction process of kilogram working medium1Decompression expansion process 9c, M with kilogram working medium1Kilogram working medium exothermal condensation process c 1-15 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 to carry out the b3 process, (M)1+M2) 45 processes and (M) are carried out in kg of working medium1+M2X) kg is processed 56, 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 (M)1+M2X) Process 78 with (M) kg of working substance1+M2) The kilogram of working medium is provided by heat release (heat return) of 89 processes, or is provided by an external heat source and the working medium heat return together.
(2) Exothermic Process- (M)1+M2X) exothermic heat of 78 kg of working fluid and (M)1+M2) Heat 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); m is a group of1The kilogram working medium carries out the heat release of the c1 process, generally releases to a low-temperature heat source and is supplied by heat and powerIs provided to the user.
(3) Energy conversion Process-M1The boosting process 12 of kilogram working medium is generally completed by a circulating pump, M2Boosting processes 9a and (M) of kg working medium2M) boosting process a4 of kg of working medium is generally carried out by a compressor; (M)1+ M) decompression expansion process 34 for kg of working medium, decompression process 58 for X kg of working medium, (M)1+M2-X) depressurization 67 of kg of working medium, and also M1The kilogram working medium decompression expansion process 9c 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. 5 is performed as follows:
(1) From the circulation process:
working medium is subjected to-M1Pressure raising process of kilogram working medium condensate 12,M1The kilogram working medium absorbs heat to heat, vaporize and overheat 23,M1Decompression expansion process 34, M of kilogram working medium2Kilogram working medium pressure raising and temperature raising process 74, (M)1+M2) Kilogram working medium heat absorption temperature rise process 45, (M)1+M2) Kilogram working medium decompression expansion Process 56, (M)1+M2) Heat release and temperature reduction process 67,M of kilogram working medium178, M in the heat release and temperature reduction process of kilogram working media1Decompression expansion of working medium kilogram to 89,M1Kilogram working medium releases heat and condenses 91-10 processes in total.
(2) From the energy conversion perspective:
(1) endothermic process-M1Process 23 and (M) in kg of working medium1+M2) The 45 process is 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 (M)1+M2) 67 processes and M are carried out with kg of working medium1The kilogram of working medium is provided by heat release (back heating) of 78 processes or by an external heat source and the working medium back heating.
(2) Exothermic Process- (M)1+M2) 67 processes and M with kg of working medium1Kilogram (kilogram)The working medium releases heat in the 78 process, and can provide heat to the outside to meet corresponding heat requirements, or partially or completely meet the heat absorption requirements of other processes of combined cycle, and the useless part is 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, M2The boosting process 74 of kilograms of working fluid is generally accomplished by a compressor; m1Decompression expansion process 34 of kilogram working medium, (M)1+M2) Decompression expansion process 56 of kilogram working medium, and M1The kilogram working medium decompression expansion process 89 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. 6 is performed as follows:
(1) From the circulation process:
working medium process-M1Boosting process of kilogram working medium condensate 12,M1The kilogram working medium absorbs heat to heat, vaporize and overheat 231Decompression expansion process 34, M with kilogram working medium2Kilogram working medium pressure and temperature rise process 94, (M)1+M2) 45 kg working medium heat absorption and temperature rise process, 58 (M) X kg working medium decompression and expansion process1+M2-X) Heat absorption and temperature increase Process 56 with kilogram working Medium, (M)1+M2-X) kilogram working medium decompression expansion Process 67, (M)1+M2-X) kilogram working medium thermal cooling process 78, (M)1+M2) 89, M in the heat release and temperature reduction process of kilogram working medium1Kkg working medium exothermic cooling process 9c, M1Decompression expansion process cd, M with kilogram working medium1Kilogram working medium exothermal condensation process d 1-total 13 processes.
(2) From the energy conversion perspective:
(1) endothermic process-M1Carrying out 23 processes (M) by kg of working medium1+M2) 45 processes and (M) are carried out in kg of working medium1+M2-X) The kilogram carries on 56 course, its high temperature section heat absorption is provided by external heat source generally; the heat absorption of the low-temperature section is performed by an external heat source or (M)1+M2X) carrying out 78 processes with kg of working medium, (M)1+M2) 89 process and M are carried out by kilogram working medium1The kilogram working medium is provided by heat release (heat return) of the 9c process, or is provided by an external heat source and the working medium heat return together.
(2) Exothermic Process- (M)1+M2X) exothermic heat of 78 kg of working fluid (M)1+M2) 89 process and M in kg of working medium1Kilogram working medium releases heat in the 9c process, corresponding heat requirements can be met, or partial 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); m is a group of1Heat release in the d1 process is carried out by kilogram working media, and the heat release is generally carried out on a low-temperature heat source and is provided for a heat user during combined heat and power supply.
(3) Energy conversion Process-M1The boosting process 12 of kg of working medium is generally carried out by means of a circulation pump, M2The boosting 94 of kilogram of working fluid is typically accomplished by a compressor; m1Decompression expansion process 34 for kg of working medium, decompression expansion process 58 for X kg of working medium, (M)1+M2-X) decompression expansion process 67 of kg working medium, and also M1The kilogram working medium decompression expansion process cd 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. 7 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 process 2b, (M)1+ M) kilogram working medium absorbs heat to raise temperature, vaporize and overheat process b3, (M)1+ M) kilogram working medium decompression expansion process 342Kilogram working medium pressure-raising and temperature-raising process 7a, M kilogram working medium and M1Ab (M) of the condensation process of heat release of the mixture of kilograms of working substances2-M) one kilogram of working medium is boosted and heatedEquation a4, (M)1+M2) Kilogram working medium heat absorption temperature rise process 45, (M)1+M2) Decompression expansion Process 56 with kilogram working Medium, (M)1+M2) Heat release and temperature reduction process 67,M of kilogram working medium178, M in the heat release and temperature reduction process of kilogram working media1Decompression expansion process 89, M of kilogram working medium1And the kilogram working medium releases heat to be condensed 91-13 processes in total.
(2) From the aspect of energy conversion:
(1) endothermic process-M1Heat absorption of kilogram working medium in 2b process comes from mixed heat release of M kilogram superheated steam, M1B3 Process and (M) in kg of working substance1+M2) The 45 process is 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 (M)1+M2) 67 processes and M are carried out by kilogram working medium1The kilogram of working medium is provided by heat release (back heating) of 78 processes or by an external heat source and the working medium back heating.
(2) Exothermic Process- (M)1+M2) 67 processes and M in kg of working medium1Heat 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 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 kg of working medium is generally carried out by means of a circulation pump, M2Boosting processes 7a and (M) with kilograms of working substance2M) boosting process a4 of kg of working medium is generally carried out by a compressor; (M)1+ M) decompression expansion process 34 of kilogram working medium, (M)1+M2) Decompression expansion process 56 of kilogram working medium, and M1The kilogram working medium decompression expansion process 89 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,M1Kilogram working medium heat absorption temperature rise process 2b, (M)1+ M) kilogram working medium heat absorption temperature rise, vaporization and overheating process b3, (M)1+ M) kilogram working medium decompression expansion process 342Boosting and temperature rising process 9a of kilogram working medium, 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 a4, (M)1+M2) 45 kg working medium heat absorption and temperature rise process, 58 (M) X kg working medium decompression and expansion process1+M2-X) Heat absorption and temperature increase Process 56 with kilogram working Medium, (M)1+M2-X) kilogram working medium decompression expansion Process 67, (M)1+M2-X) kilogram working medium exothermic cooling process 78, (M)1+M2) 89 m, kilogram working medium heat release and temperature reduction process1Cooling process 9c, M of kilogram working medium1Decompression expansion process cd, M with kilogram working medium1Kilogram working medium exothermal condensation process d 1-16 processes in total.
(2) From the aspect of energy conversion:
(1) endothermic process-M1Heat absorption of 2b process by kilogram working medium comes from mixed heat release of M kilograms of superheated steam, (M)1+ M) kg working medium for b3 process, (M)1+M2) 45 processes and (M) are carried out in kg of working medium1+M2X) kg is processed 56, 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 (M)1+M2X) carrying out 78 processes with kg of working medium, (M)1+M2) 89 kg of working medium is subjected to the process M1The kilogram working medium is provided by heat release (heat return) of the 9c process, or is provided by an external heat source and the working medium heat return together.
(2) Exothermic Process- (M)1+M2X) exothermic heat of 78 processes per kilogram of working fluid, (M)1+M2) Heat release and M of 89 processes per kilogram of working medium1Kilogram working medium is used for heat release in the 9c process, corresponding heat requirements can be met,or partially or mostly for the endothermic needs of other processes of the combined cycle, with the unusable portion being released to a low temperature heat source (e.g., ambient); m1And the kilogram working medium releases heat in the d1 process, generally releases the heat to a low-temperature heat source, and provides the heat to a heat user during heat and power combined supply.
(3) Energy conversion Process-M1The boosting process 12 of kg of working medium is generally carried out by means of a circulation pump, M2Boosting processes 9a and (M) of kg working medium2M) the step-up process a4 of kg of working medium is generally carried out by a compressor; (M)1+ M) decompression expansion process 34 for kg of working medium, decompression process 58 for X kg of working medium, (M)1+M2X) depressurization of working substances 67, and also M1The kilogram working medium decompression expansion process cd 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 steam combined cycle example in the T-s diagram of fig. 9 is performed as follows:
(1) From the circulation process:
working medium carries out-M1Boosting process of kilogram working medium condensate 12,M1The kilogram working medium absorbs heat to heat, vaporize and overheat 23,M1Decompression expansion process 34, M of kilogram working medium2Kilogram working medium pressure-raising and temperature-raising process 84, (M)1+M2) Kilogram working medium heat absorption temperature rise process 45, (M)1+M2) Kilogram working medium decompression expansion Process 56, (M)1+M2) Heat release and temperature reduction process 67,M of kilogram working medium278, M in the process of heat release and temperature reduction of kilogram working medium1Decompression expansion process 79,M of kilogram working medium1Kilogram working medium releases heat and condenses 91-10 processes in total.
(2) From the energy conversion perspective:
(1) endothermic process-M1Process 23 kg of working medium and (M)1+M2) The 45 process is 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 (M)1+M2) 67 processes and M are carried out with kg of working medium278 kg of working mediumThe heat release (back heating) of the process is provided, or the heat release is provided by an external heat source and the back heating of the working medium.
(2) Exothermic Process- (M)1+M2) 67 processes and M in kg of working medium2Heat 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); m is a group of1The 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 84 of kilograms of working fluid is typically accomplished by a compressor; m1Decompression expansion process 34 of kilogram working medium, (M)1+M2) Decompression expansion process 56 of kg working medium, also M1The kilogram working medium decompression expansion process 79 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. 10 is performed as follows:
(1) From the circulation process:
working medium process-M1Boosting process of kilogram working medium condensate 12,M1The kilogram working medium absorbs heat to heat, vaporize and overheat 23,M1Decompression expansion process 34, M of kilogram working medium2Kilogram working medium pressure-rising and temperature-rising process c4, (M)1+M2) 45 kg working medium heat absorption and temperature rise process, 58 (M) X kg working medium decompression and expansion process1+M2-X) kilogram working medium endothermic heating process 56, (M)1+M2-X) kilogram working medium decompression expansion Process 67, (M)1+M2-X) kilogram working medium thermal cooling process 78, (M)1+M2) 89 m, kilogram working medium heat release and temperature reduction process2Cooling process 9c, M of kilogram working medium1Decompression expansion process 9d, M with kilogram working medium1Kilogram working medium exothermal condensation process d 1-total 13 processes.
(2) From the energy conversion perspective:
(1) endothermic process-M1Carrying out 23 processes (M) by kg of working medium1+M2) 45 processes and (M) are carried out in kg of working medium1+M2X) kg is processed 56, 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 (M)1+M2X) carrying out 78 processes with kg of working medium, (M)1+M2) 89 kg of working medium is subjected to the process M2The kilogram working medium is provided by heat release (heat return) of the 9c process, or is provided by an external heat source and the working medium heat return together.
(2) Exothermic Process- (M)1+M2X) exothermic heat of 78 processes per kilogram of working fluid, (M)1+M2) Heat release and M of 89 processes per kilogram of working medium2Kilogram 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); m1And the kilogram working medium releases heat in the d1 process, generally releases the heat to a low-temperature heat source, and provides the heat to a heat user during heat and power combined supply.
(3) Energy conversion Process-M1The boosting process 12 of kg of working medium is generally carried out by means of a circulation pump, M2The boosting process c4 of kilogram working medium is generally completed by a compressor; m is a group of1Decompression expansion process 34 for kg of working medium, decompression expansion process 58 for X kg of working medium, (M)1+M2-X) decompression expansion process 67 of kg working medium, and also M1The kilogram working medium is decompressed and expanded for 9d, and 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 steam combined cycle example in the T-s diagram shown in fig. 11 is performed as follows:
(1) From the cycle process:
working medium process-M1Pressure raising process of kilogram working medium condensate 12,M1Kilogram working medium heat absorption temperature rise process 2b, (M)1+ M) kilogram working medium absorbs heat to raise temp, vaporize and overheatProcess b3, (M)1+ M) kilogram working medium decompression expansion process 342Pressure and temperature raising process of kilogram working medium 8a, M kilogram working medium and M1Ab (M) of the condensation process of heat release of the mixture of kilograms of working substances2-M) kilogram working medium pressure and temperature rising process a4, (M)1+M2) Kilogram working medium heat absorption temperature rise process 45, (M)1+M2) Decompression expansion Process 56 with kilogram working Medium, (M)1+M2) Heat release and temperature reduction process 67,M of kilogram working medium278, M in the heat release and temperature reduction process of kilogram working media1Decompression expansion process 79,M of kilogram working medium1And the kilogram working medium releases heat and is condensed 91-13 processes in total.
(2) From the aspect of energy conversion:
(1) endothermic process-M1Heat absorption of kilogram working medium in 2b process comes from mixed heat release of M kilogram superheated steam, M1B3 process and (M) in kg of working medium1+M2) The 45 process is 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 (M)1+M2) 67 processes and M are carried out by kilogram working medium2The kilogram of working medium is provided by heat release (back heating) of 78 processes or by an external heat source and the working medium back heating.
(2) Exothermic Process- (M)1+M2) 67 processes and M in kg of working medium2The kilogram working medium is used for heat release in the 78 process, so that 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 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 8a and (M) of kilogram working medium2M) boosting process a4 of kg of working medium is generally carried out by a compressor; (M)1+ M) decompression expansion process 34 of kilogram working medium, (M)1+M2) Decompression expansion process 56 of kg working medium, also M1Decompression expansion process 79 with kilogram working medium, in generalIs 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 steam combined cycle example in the T-s diagram shown in fig. 12 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 process 2b, (M)1+ M) kilogram working medium absorbs heat to raise temperature, vaporize and overheat process b3, (M)1+ M) kilogram working medium decompression expansion process 342Boosting 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) kg working medium pressure and temperature rising process a4, (M)1+M2) Kilogram working medium absorbs heat and rises temperature 45, X kilogram working medium reduces pressure and expands process 58, (M)1+M2-X) Heat absorption and temperature increase Process 56 with kilogram working Medium, (M)1+M2-X) kilogram working medium decompression expansion Process 67, (M)1+M2-X) kilogram working medium exothermic cooling process 78, (M)1+M2) 89 m, kilogram working medium heat release and temperature reduction process2Kkg working medium exothermic cooling process 9c, M1Decompression expansion process 9d, M with kilogram working medium1Kilogram working medium exothermal condensation process d 1-16 processes in total.
(2) From the aspect of energy conversion:
(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 working medium for b3 process, (M)1+M2) 45 processes and (M) are carried out per kilogram of working medium1+M2X) kg is processed 56, 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 (M)1+M2X) carrying out 78 processes with kg of working medium, (M)1+M2) 89 process and M are carried out by kilogram working medium2The kilogram working medium is provided by heat release (heat return) of the 9c process, or is provided by an external heat source and the working medium heat return together.
(2) Exothermic process-—(M1+M2X) exothermic heat of 78 processes per kilogram of working fluid, (M)1+M2) 89 process heat release and M per kilogram working medium2Kilogram 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); m is a group of1And the kilogram working medium releases heat in the d1 process, generally releases the heat to a low-temperature heat source, and provides the heat to a heat user during heat and power combined supply.
(3) Energy conversion Process-M1The boosting process 12 of kg of working medium is generally carried out by means of a circulation pump, M2Boosting process of kilogram working medium ca and (M)2M) boosting process a4 of kg of working medium is generally carried out by a compressor; (M)1+ M) decompression expansion process 34 for kg of working medium, decompression process 58 for X kg of working medium, (M)1+M2X) depressurization of working substances 67, and also M1The kilogram working medium decompression expansion process 9d 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 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 process 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 cycle adjustment
(5) The process is shared, the heat efficiency is improved, and a theoretical basis is provided for reducing the equipment investment.
(6) In the high temperature area or the variable temperature area, the circulating medium and the heat source medium are both gases, and the circulating working medium is in favor of reducing the temperature difference heat transfer loss from the heat source heat absorption link and improving the heat efficiency.
(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-M1Boosting process of working medium kilogram 12,M1The kilogram working medium absorbs heat and is vaporized 23,M134, M step-down process of kilogram working medium2Kilogram working medium boost process 74, (M)1+M2) Kilogram working medium endothermic process 45, (M)1+M2) Kilogram working medium depressurization 56 (M)1+M2) Heat release process 67,M per kilogram of working medium1Decompression process 78, M with kilogram working medium1Kilogram working medium heat release condensation process 81-a closed process of composition.
2. Single working medium steam combined cycle, is formed from M1Kilogram and M2Working medium composed of kilograms of (kg) of (g) a respective or co-operating twelve processes-M1Boosting process of working medium kilogram 12,M1Kilogram working medium heat absorption vaporization process 23,M134,M of kilogram working medium decompression process2Kilogram working medium boost process 94, (M)1+M2) Kilogram working medium heat absorption process 45, X kilogram working medium pressure reduction process 58, (M)1+M2-X) kilogram working substance endothermic process 56, (M)1+M2-X) kg working medium depressurization 67, (M)1+M2X) kilogram working medium exothermic process 78, (M)1+M2) Thousand ofWorking medium heat release process 89,M1Decompression process 9c, M with kilogram working medium1Kilogram working medium exothermal condensation process c 1-the closed process of component.
3. Single working medium steam combined cycle, meaning consisting of M1Kilogram and M2Working medium composed of kilograms of composition, twelve processes carried out separately or together-M1Boosting process of working medium kilogram 12,M1Kilogram working medium endothermic process 2b, (M)1+ M) kilogram working medium endothermic vaporization process b3, (M)1+ M) kilogram working medium depressurization process 34, M2Kilogram working medium pressure increasing process 7a, M kilogram working medium heat releasing condensation process ab, (M)2-M) kilogram working medium boosting process a4, (M)1+M2) Kilogram working medium endothermic process 45, (M)1+M2) Kilogram working medium depressurization 56 (M)1+M2) Heat release process of kilogram working medium 67,M1Decompression process 78, M with kilogram working medium1Kilogram working medium exothermic condensation process 81-the closed process of composition.
4. Single working medium steam combined cycle, is formed from M1Kilogram and M2Working medium composed of kilogram, fifteen processes carried out separately or together-M1Kilogram working medium pressure increasing process 12,M1Kilogram working medium heat absorption process 2b, (M)1+ M) kilogram working medium endothermic vaporization process b3, (M)1+ M) kg working medium depressurization process 34, M2Kilogram working medium boosting process 9a, M kilogram working medium heat releasing condensation process ab, (M)2-M) kilogram working medium boosting process a4, (M)1+M2) Kilogram working medium heat absorption process 45, X kilogram working medium pressure reduction process 58, (M)1+M2-X) kilogram working substance endothermic process 56, (M)1+M2-X) decompression Process 67 with kg of working substance, (M)1+M2X) kilogram working medium exothermic process 78, (M)1+M2) 89, M kilogram working medium heat release process1Decompression process of kilogram working medium 9c, M1Kilogram working medium exothermal condensation process c 1-the closed process of composition.
5. Single working mediumCombined steam cycle, meaning from M1Kilogram and M2Ten processes carried out separately or together-M1Kilogram working medium pressure increasing process 12,M1Kilogram working medium heat absorption vaporization process 23,M134, M step-down process of kilogram working medium2Kilogram working medium boost process 74, (M)1+M2) Kilogram working medium endothermic process 45, (M)1+M2) Kilogram working medium depressurization 56 (M)1+M2) Heat release process of kilogram working medium 67,M1Heat release process 78,M of kilogram working medium1The kilogram working medium is decompressed and filtered by 89,M1Kilogram working medium heat release condensation process 91-the closed process of composition.
6. Single working medium steam combined cycle, is formed from M1Kilogram and M2Thirteen processes carried out separately or together-M1Kilogram working medium pressure increasing process 12,M1The kilogram working medium absorbs heat and is vaporized 23,M134,M of kilogram working medium decompression process2Kilogram working medium boost process 94, (M)1+M2) 45 kg of working medium for heat absorption, 58 (M) for pressure reduction1+M2-X) kilogram working substance endothermic process 56, (M)1+M2-X) decompression Process 67 with kg of working substance, (M)1+M2X) kilogram working medium exothermic process 78, (M)1+M2) Kilogram working medium heat release process 89,M1Exothermic process 9c, M with kilogram working medium1The blood pressure lowering process cd, M with kilogram working medium1Kilogram working medium heat release condensation process d 1-the closed process of composition.
7. Single working medium steam combined cycle, is formed from M1Kilogram and M2Kilogram formed working medium, thirteen processes carried out separately or together-M1Kilogram working medium pressure increasing process 12,M1Kilogram working medium heat absorption process 2b, (M)1+ M) kilogram working medium endothermic vaporization process b3, (M)1+ M) kg working medium depressurization process 34, M2Kilogram working medium pressure increasing process 7a, M kilogram working medium heat releasing condensation process ab, (M)2-M) kg of working substance lPressing Process a4, (M)1+M2) Kilogram working medium endothermic process 45, (M)1+M2) Kilogram working medium depressurization 56 (M)1+M2) Heat release process of kilogram working medium 67,M178, M heat release process of kilogram working medium1Decompression process with kilogram working medium 89,M1Kilogram working medium heat release condensation process 91-the closed process of composition.
8. Single working medium steam combined cycle, meaning consisting of M1Kilogram and M2Working medium composed of kilograms of composition, sixteen processes carried out separately or together-M1Boosting process of working medium kilogram 12,M1Kilogram working medium endothermic process 2b, (M)1+ M) kilogram working medium endothermic vaporization process b3, (M)1+ M) kg working medium depressurization process 34, M2Kilogram working medium boosting process 9a, M kilogram working medium heat releasing condensation process ab, (M)2-M) kilogram working medium boosting process a4, (M)1+M2) 45 kg of working medium for heat absorption, 58 (M) for pressure reduction1+M2-X) kilogram working substance endothermic process 56, (M)1+M2-X) decompression Process 67 with kg of working substance, (M)1+M2X) kilogram working medium exothermic process 78, (M)1+M2) Kilogram working medium heat release process 89,M1Exothermic process 9c, M in kilogram working medium1The blood pressure lowering process cd, M with kilogram working medium1Kilogram working medium heat release condensation process d 1-the closed process of composition.
9. Single working medium steam combined cycle, is formed from M1Kilogram and M2Ten processes carried out separately or together-M1Boosting process of working medium kilogram 12,M1The kilogram working medium absorbs heat and is vaporized 23,M134,M of kilogram working medium decompression process2Kilogram working medium boosting process 84, (M)1+M2) Kilogram working medium endothermic process 45, (M)1+M2) Kilogram working medium depressurization 56 (M)1+M2) Heat release process of kilogram working medium 67,M2Heat release process 78,M of kilogram working medium179, M in the process of reducing pressure by kilogram working medium1Kilogram (kilogram)Working medium exothermic condensation process 91-a compositional closing process.
10. Single working medium steam combined cycle, is formed from M1Kilogram and M2Thirteen processes carried out separately or together-M1Boosting process of working medium kilogram 12,M1The kilogram working medium absorbs heat and is vaporized 23,M134, M step-down process of kilogram working medium2Kilogram working medium boosting process c4, (M)1+M2) 45 kg of working medium for heat absorption, 58 (M) for pressure reduction1+M2-X) kilogram working substance endothermic process 56, (M)1+M2-X) decompression Process 67 with kg of working substance, (M)1+M2X) kilogram working medium exothermic process 78, (M)1+M2) 89, M kilogram working medium heat release process2Exothermic process 9c, M with kilogram working medium1The blood pressure lowering process cd, M with kilogram working medium1Kilogram working medium heat release condensation process d 1-the closed process of composition.
11. Single working medium steam combined cycle, is formed from M1Kilogram and M2Thirteen processes carried out separately or together-M1Boosting process of working medium kilogram 12,M1Kilogram working medium endothermic process 2b, (M)1+ M) kilogram working medium endothermic vaporization process b3, (M)1+ M) kg working medium depressurization process 34, M2Pressure raising process of working medium kilogram 8a, heat releasing and condensing process of working medium M kilogram ab (M)2-M) kilogram working medium boosting process a4, (M)1+M2) Kilogram working medium endothermic process 45, (M)1+M2) Kilogram working medium depressurization 56 (M)1+M2) Heat release process 67,M per kilogram of working medium2Heat release process 78,M of kilogram working medium1Decompression process 79,M of kilogram working medium1Kilogram working medium exothermic condensation process 91-the closed process of composition.
12. Single working medium steam combined cycle, is formed from M1Kilogram and M2Sixteen processes-carried out respectively or together-by one kilogram of working mediaM1Boosting 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) kg working medium depressurization process 34, M2Kilogram working medium boosting process ca, M kilogram working medium heat releasing condensation process ab, (M)2M) kg working medium pressure increase process a4, (M)1+M2) 45 kg of working medium for heat absorption, 58 (M) for pressure reduction1+M2-X) kilogram of working fluid endothermic process 56, (M)1+M2-X) decompression Process 67 with kg of working substance, (M)1+M2X) kilogram working medium exothermic process 78, (M)1+M2) Kilogram working medium heat release process 89,M2Exothermic process 9c, M in kilogram working medium1Decompression process 9d, M with kilogram working medium1Kilogram working medium heat release condensation process d 1-the closed process of composition.
CN202010931869.3A 2019-09-01 2020-08-31 Single working medium steam combined cycle Pending CN115263472A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN2019108471621 2019-09-01
CN201910847162 2019-09-01

Publications (1)

Publication Number Publication Date
CN115263472A true CN115263472A (en) 2022-11-01

Family

ID=74684867

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010931869.3A Pending CN115263472A (en) 2019-09-01 2020-08-31 Single working medium steam combined cycle

Country Status (2)

Country Link
CN (1) CN115263472A (en)
WO (1) WO2021036152A1 (en)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20140091139A (en) * 2013-01-08 2014-07-21 인하대학교 산학협력단 Vapor compression refrigeration/airconditioning equipment with suction line heat exchanger for improving energy efficiency using R1234ze
US20170174049A1 (en) * 2015-12-21 2017-06-22 Ford Global Technologies, Llc Dynamically controlled vapor compression cooling system with centrifugal compressor
WO2018068430A1 (en) * 2016-10-12 2018-04-19 李华玉 Steam combined cycle having single working fluid, and combined-cycle steam power device
WO2018068431A1 (en) * 2016-10-12 2018-04-19 李华玉 Combined cycle steam power device having evaporation stages
CN108119195B (en) * 2016-12-20 2020-05-01 李华玉 Combined cycle power plant
CN111608756A (en) * 2019-04-23 2020-09-01 李华玉 Single working medium steam combined cycle

Also Published As

Publication number Publication date
WO2021036152A1 (en) 2021-03-04

Similar Documents

Publication Publication Date Title
CN115263472A (en) Single working medium steam combined cycle
WO2020215814A1 (en) Single working medium steam combined cycle
WO2020211472A1 (en) Single working medium steam combined cycle
CN115263462A (en) Single working medium steam combined cycle
CN112344579A (en) Reverse single working medium steam combined cycle
CN115263475A (en) Single working medium steam combined cycle
CN115263469A (en) Single working medium steam combined cycle
CN115263473A (en) Single working medium steam combined cycle
CN115263474A (en) Single working medium steam combined cycle
CN111561366A (en) Single working medium steam combined cycle
CN111608758A (en) Single working medium steam combined cycle
CN111608757A (en) Single working medium steam combined cycle
CN111561368A (en) Single working medium steam combined cycle
US20220381159A1 (en) Single-working-medium vapor combined cycle
CN111561367A (en) Single working medium steam combined cycle
CN111608755A (en) Single working medium steam combined cycle
CN115264981A (en) Reverse single working medium steam combined cycle
CN111636936A (en) Single working medium steam combined cycle
CN115478916A (en) Reverse single working medium steam combined cycle
CN115342545A (en) Reverse single working medium steam combined cycle
CN115264980A (en) Reverse single working medium steam combined cycle
CN115478917A (en) Reverse single working medium steam combined cycle
CN113623037A (en) Combined cycle of single working medium of the second kind
CN115478918A (en) Reverse single working medium steam combined cycle
CN114646155A (en) Regenerative combined cycle and combined cycle power plant

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination