WO2022007375A1 - Second kind single working medium joint cycle - Google Patents

Abstract

A second kind single working medium joint cycle, relating to the technical fields of thermodynamics and heat pumps. A second kind single working medium joint cycle, referring to a closed process composed of thirteen processes performed separately or jointly by M₁ kilogram, M₂ kilogram, and H kilogram working mediums—an M₁ kilogram working medium pressurising process 12, an M₁ kilogram working medium endothermic vaporisation process 23, an H kilogram working medium pressurising process 1g, an H kilogram working medium and M₃ kilogram working medium mixed endothermic process g8, an M₂ kilogram working medium pressurising process 83, an M₃ kilogram working medium endothermic process 34, an M₃ kilogram working medium pressurising process 45, an M₃ kilogram working medium exothermic process 56, an M₃ kilogram working medium depressurising process 67, an M₃ kilogram working medium exothermic process 7j, an M₃ kilogram working medium and H kilogram working medium mixed exothermic process j8, an (M₁+H) kilogram working medium depressurising process 89, and an (M₁+H) kilogram working medium exothermic condensation process 91, wherein M₃ is the sum of M₁ and M₂.

Description

The second type of single working fluid combined cycle Technical field:

The invention belongs to the technical field of thermodynamics and heating.

Background technique:

Cold, heat and power needs are common in human life and production; people often need to use thermal energy to achieve cooling, heating or conversion into power. In the process of achieving the above goals, there will be many constraints, including the type, grade and quantity of energy, the type, grade and quantity of user requirements, ambient temperature, type of working medium, equipment flow, structure and manufacturing cost Wait.

In the basic theoretical system of thermal science, the creation, development and application of thermodynamic cycle will play a major role in the scientific production and utilization of energy, and actively promote social progress and productivity development. Aiming at the variable-temperature type medium-temperature heat resource and high-temperature heat demand, and considering the simultaneous use of power drive or taking into account the power demand, the present invention proposes to use the phase change process or the phase change process as the main method to realize low temperature heat release, and the use of the temperature change process or the temperature change process as It mainly realizes heat absorption at medium temperature, adopts temperature change process to realize high temperature heat supply, and adopts the second type of single working medium combined cycle which combines mixing and indirect heat exchange.

Invention content:

The main purpose of the present invention is to provide the second type of single working substance combined cycle, and the specific content of the invention is described as follows:

1. The second type of single working fluid combined cycle refers to _{thirteen processes carried out by M 1} kg, M ₂ kg and H kg working fluids, respectively or jointly - the M ₁ kg working fluid boosting process 12, M ₁ Kilogram working medium endothermic vaporization process 23, H kg working medium boosting process 1g, H kg working medium mixed with M ₃ kg working medium endothermic process g8, M ₂ kg working medium boosting process 83, M ₃ kg working medium absorption process Thermal process 34, M ₃ kg working fluid boosting process 45, M ₃ kg working fluid exothermic process 56, M ₃ kg working fluid depressurization process 67, M ₃ kg working fluid exothermic process 7j, M ₃ kg working fluid and H kilogram working fluid mixing exothermic process j8, (M ₁ +H) kilogram working fluid depressurization process 89, (M ₁ +H) kilogram working fluid exothermic condensation process 91—a closed process composed of; wherein, M ₃ is M ₁ and M ₂ sum.

2. The second type of single working fluid combined cycle refers to the fourteen processes carried out separately or jointly _{by M 1} kg, M _{2 kg and H kg working fluids - M 1} kg working fluid boosting process 12, M ₁ Kilogram working medium endothermic vaporization process 25, H kg working medium boosting process 1g, H kg working medium mixed with M ₃ kg working medium endothermic process g9, M ₂ kg working medium boosting process 93, M ₂ kg working medium absorption process Thermal process 34, M ₂ kg working fluid boosting process 45, M ₃ kg working fluid boosting process 56, M ₃ kg working fluid exothermic process 67, M ₃ kg working fluid depressurization process 78, M ₃ kg working fluid release process Thermal process 8j, M ₃ kg working fluid mixed with H kg working fluid exothermic process j9, (M ₁ +H) kg working fluid depressurization process 9c, (M ₁ +H) kg working fluid exothermic condensation process c1—— A closed process of composition; where M ₃ is the sum _{of M 1} and M _{2 .}

3. The second type of single working fluid combined cycle refers _{to the fourteen processes carried out by M 1} kg, M ₂ kg and H kg working fluids, respectively or jointly - the M ₁ kg working fluid boosting process 12, M ₁ Kilogram working medium endothermic vaporization process 24, H kg working medium boosting process 1g, H kg working medium mixed with M ₃ kg working medium endothermic process g9, M ₂ kg working medium boosting process 93, M ₂ kg working medium absorption process Thermal process 35, M ₁ kg working fluid boosting process 45, M ₃ kg working fluid boosting process 56, M ₃ kg working fluid exothermic process 67, M ₃ kg working fluid depressurization process 78, M ₃ kg working fluid release process Thermal process 8j, M ₃ kg working fluid mixed with H kg working fluid exothermic process j9, (M ₁ +H) kg working fluid depressurization process 9c, (M ₁ +H) kg working fluid exothermic condensation process c1—— A closed process of composition; where M ₃ is the sum _{of M 1} and M _{2 .}

4. The second type of single working fluid combined cycle refers _{to the sixteen processes carried out by M 1} kg, M ₂ kg and H kg working fluids, respectively or jointly—M ₁ kg working fluid boosting process 12, M ₁ Kilogram working medium endothermic vaporization process 23, H kg working medium boosting process 1g, H kg working medium mixed with M ₃ kg working medium endothermic process gc, M ₂ kg working medium boosting process c3, M ₃ kg working medium absorption process Thermal process 34, M ₃ kg working fluid boost process 45, M ₃ kg working fluid exothermic process 56, X kg working fluid depressurization process 67, (M ₃ -X) kg working fluid exothermic process 68, (M ₃ -X) Kilogram working medium depressurization process 89, X kg working medium exothermic process 79, M ₃ kg working medium exothermic process 9j, M ₃ kg working medium mixed with H kg working medium exothermic process jc, (M ₁ + H) Kilogram working medium depressurization process cd, (M ₁ +H) Kilogram working medium exothermic condensation process d1—a closed process of composition; wherein, M ₃ is the sum _{of M 1} and M _{2 .}

5. The second type of single working fluid combined cycle refers to _{seventeen processes carried out by M 1} kg, M ₂ kg and H kg working fluids, respectively or jointly - the M ₁ kg working fluid boosting process 12, M ₁ Kilogram endothermic vaporization process 23, M ₁ kg working fluid boosting process 34, M ₁ kg working fluid exothermic process 45, M ₁ kg working fluid depressurization 56, M ₁ kg working fluid exothermic process 6d, H Kilogram working medium boosting process 1g, H kg working medium mixed with M ₃ kg working medium endothermic process ge, M ₂ kg working medium boosting process e7, M ₂ kg working medium endothermic process 78, M ₂ kg working medium liter Pressing process 89, M ₂ kg working fluid exothermic process 9c, M ₂ kg working fluid depressurization process cd, M ₃ kg working fluid exothermic process dj, M ₃ kg working fluid mixed with H kg working fluid Exothermic process je, (M ₁ +H) kilogram working fluid depressurization process ef, (M ₁ +H) kilogram working fluid exothermic condensation process f1—the closed process of composition; wherein, M ₃ is the sum _{of M 1} and M _{2 .}

6. The second type of single working fluid combined cycle refers _{to the sixteen processes carried out by M 1} kg, M ₂ kg and H kg working fluids, respectively or jointly—M ₁ kg working fluid boosting process 12, M ₁ Kilogram working medium endothermic process 2b, (M ₁ +M) kg working medium endothermic vaporization process b3, H kg working medium boosting process 1g, H kg working medium mixed with M ₃ kg working medium endothermic process g8, M ₂ Kilogram working medium boosting process 8a, M kg working medium exothermic condensation process ab, (M ₂ -M) kg working medium boosting process a3, M ₃ kg working medium endothermic process 34, M ₃ kg working medium boosting process 45, M ₃ kg working medium exothermic process 56, M ₃ kg working medium depressurization process 67, M ₃ kg working medium exothermic process 7j, M ₃ kg working medium mixed with H kg working medium Exothermic process j8, (M ₁ +H) kilogram working fluid depressurization process 89, (M ₁ +H) kilogram working fluid exothermic condensation process 91—a closed process composed; wherein, M ₃ is the sum _{of M 1} and M _{2 .}

7. The second type of single working fluid combined cycle refers _{to the seventeen processes carried out by M 1} kg, M ₂ kg and H kg working fluids, respectively or jointly—M ₁ kg working fluid boosting process 12, M ₁ Kilogram working medium endothermic process 2b, (M ₁ +M) kg working medium endothermic vaporization process b5, H kg working medium boosting process 1g, H kg working medium mixed with M ₃ kg working medium endothermic process g9, M ₂ Kilogram working fluid boosting process 9a, M kg working fluid exothermic condensation process ab, (M ₂ -M) kg working fluid boosting process a3, (M ₂ -M) kg working fluid endothermic process 34, (M ₂ - M) Kilogram working medium boosting process 45, M ₃ kg working medium boosting process 56, M ₃ kg working medium exothermic process 67, M ₃ kg working medium depressurization process 78, M ₃ kg working medium exothermic process 8j, M ₃ kg working medium and H kg working medium mixed exothermic process j9, (M ₁ +H) kg working medium depressurization process 9c, (M ₁ +H) kg working medium exothermic condensation process c1 - a closed process composed of ; Wherein, M ₃ is the sum _{of M 1} and M _2.

8. The second type of single working fluid combined cycle refers to _{seventeen processes carried out by M 1} kg, M ₂ kg and H kg working fluids, respectively or jointly - the M ₁ kg working fluid boosting process 12, M ₁ Kilogram working medium endothermic process 2b, (M ₁ +M) kg working medium endothermic vaporization process b4, H kg working medium boosting process 1g, H kg working medium mixed with M ₃ kg working medium endothermic process g9, M ₂ Kilogram working fluid boosting process 9a, M kilogram working fluid exothermic condensation process ab, (M ₂ -M) kilogram working fluid boosting process a3, (M ₂ -M) kilogram working fluid endothermic process 35, (M ₁ + M) Kilogram working medium boosting process 45, M ₃ kg working medium boosting process 56, M ₃ kg working medium exothermic process 67, M ₃ kg working medium depressurization process 78, M ₃ kg working medium exothermic process 8j, M ₃ kg working medium and H kg working medium mixed exothermic process j9, (M ₁ +H) kg working medium depressurization process 9c, (M ₁ +H) kg working medium exothermic condensation process c1 - a closed process composed of ; Wherein, M ₃ is the sum _{of M 1} and M _2.

9. The second type of single working fluid combined cycle refers to _{nineteen processes carried out by M 1} kg, M ₂ kg and H kg working fluids, respectively or jointly - the M ₁ kg working fluid boosting process 12, M ₁ Kilogram working medium endothermic process 2b, (M ₁ +M) kg working medium endothermic vaporization process b3, H kg working medium boosting process 1g, H kg working medium mixed with M ₃ kg working medium endothermic process gc, M ₂ Kilogram working medium boosting process ca, M kg working medium exothermic condensation process ab, (M ₂ -M) kg working medium boosting process _a 3, M ₃ kg working medium endothermic process 34, M ₃ kg working medium boosting Process 45, M ₃ kg working fluid exothermic process 56, X kg working fluid depressurization process 67, (M ₃ -X) kg working fluid exothermic process 68, (M ₃ -X) kg working fluid depressurization process 89, X kilogram working fluid exothermic process 79, M ₃ kilogram working fluid exothermic process 9j, M ₃ kilogram working fluid mixed with H kilogram working fluid exothermic process jc, (M ₁ +H) kilogram working fluid depressurization process cd, ( M ₁ +H) Kilogram working medium exothermic condensation process d1 - a closed process of composition; wherein, M ₃ is the sum _{of M 1} and M _2.

10. The second type of single working fluid combined cycle refers to _{twenty processes carried out by M 1} kg, M ₂ kg and H kg working fluids, respectively or jointly—M ₁ kg working fluid boosting process 12, M ₁ Kilogram working medium endothermic process 2b, (M ₁ +M) kilogram working medium endothermic vaporization process b3, (M ₁ +M) kilogram working medium boosting process 34, (M ₁ +M) kilogram working medium exothermic process 45 , (M ₁ +M) kilogram working fluid is depressurized by 56, (M ₁ +M) kilogram working fluid exothermic process 6d, H kilogram working fluid boosting process 1g, H kilogram working fluid _{is mixed with M 3} kilogram working fluid to absorb Thermal process ge, M ₂ kg working fluid boosting process ea, M kg working fluid exothermic condensation process ab, (M ₂ -M) kg working fluid boosting process a7, (M ₂ -M) kg working fluid endothermic process 78, (M ₂ -M) kilogram working fluid boosting process 89, (M ₂ -M) kilogram working fluid exothermic process 9c, (M ₂ -M) kilogram working fluid depressurizing process cd, M ₃ kilogram working fluid release Thermal process dj, M ₃ kg working medium mixed with H kg working medium and exothermic process je, (M ₁ +H) kg working medium depressurization process ef, (M ₁ +H) kg working medium exothermic condensation process f1—— A closed process of composition; where M ₃ is the sum _{of M 1} and M _{2 .}

Description of drawings:

Fig. 1/10 is an example diagram of the first principle flow chart of the second type of single working fluid combined cycle provided according to the present invention.

Fig. 2/10 is an example diagram of the second principle flow chart of the second type of single working fluid combined cycle provided according to the present invention.

Fig. 3/10 is an example diagram of the third principle flow chart of the second type of single working fluid combined cycle provided according to the present invention.

FIG. 4/10 is an example diagram of the fourth principle flow chart of the second type of single working fluid combined cycle provided according to the present invention.

Fig. 5/10 is an example flow chart of the fifth principle of the second type of single working fluid combined cycle provided according to the present invention.

FIG. 6/10 is an example diagram of the sixth principle flow chart of the second type of single working fluid combined cycle provided according to the present invention.

Fig. 7/10 is an example diagram of the seventh principle flow chart of the second type of single working fluid combined cycle provided according to the present invention.

Fig. 8/10 is an example diagram of the eighth principle flow chart of the second type of single working fluid combined cycle provided according to the present invention.

Fig. 9/10 is an example diagram of the ninth principle flow chart of the second type of single working fluid combined cycle provided according to the present invention.

Fig. 10/10 is an example diagram of the tenth principle flow chart of the second type of single working substance combined cycle provided according to the present invention.

detailed description:

First of all, it should be noted that the description of the structure and flow is not repeated unless necessary; the obvious flow is not described; in the following example, M ₃ is the sum _{of M 1} and M _{2 ;} Examples are given to describe the invention in detail.

The second type of single-agent combined cycle example in the T-s diagram shown in Fig. 1/10 proceeds as follows:

(1) From the perspective of the cycle process:

Working medium is carried out - M ₁ kg working fluid condensate boosting process 12, M ₁ kg working fluid endothermic heating, vaporization and superheating process 23, H kg working fluid condensate boosting process 1g, H kg working fluid and M ₃ Kilogram working medium mixed endothermic heating, vaporization and superheating process g8, M ₂ kilogram working medium pressure boosting and heating process 83, M ₃ kilogram working medium endothermic heating process 34, M ₃ kilogram working medium pressure boosting and heating process 45, M ₃ kilogram Working medium exothermic cooling process 56, M ₃ kg working medium is decompressed and expanded over 67, M ₃ kg working medium exothermic cooling process 7j, M ₃ kg working medium is mixed with H kg working medium Exothermic cooling process j8, (M ₁ +H) kilogram working medium pressure reduction expansion process 89, (M ₁ +H) kilogram working medium exothermic condensation process 91 - a total of 13 processes.

(2) From the perspective of energy conversion:

① Endothermic process - the endothermic process of H kg working medium for g8 process is completed by the exothermic process in the mixing process of _{M 3 kg working medium and H kg working medium; M 1} kg working medium for 23 process and M ₃ kg working medium Carry out 34 process, its endothermic is generally provided by external heat source, wherein the endothermic of low temperature section can also be provided by _{the exothermic (regeneration) of M 3} kg working medium into 7j process; wherein, M ₃ kg working medium carries out 34 process The heat absorption in the high temperature section can also be provided by the exothermic heat in the low temperature section during the 56 process.

②Exothermic process - M ₃ kg working medium carries out the exothermic heat of 56 process, and provides external heat to meet the corresponding heat demand, in which the low temperature section exothermic or can be used for 34 process high temperature section heat absorption (regeneration); M ₃ kg working medium The exothermic heat of the 7j process can be used for _{the endothermic needs of the M 1} kg working medium to carry out the 23 process at the appropriate temperature section, and the M ₃ kg working medium is mixed with the H kg working medium to cool down to 8 points, (M ₁ +H) The exothermic heat of the 91 process carried out by the kilogram working medium is generally released to the low temperature heat source (environment).

③Energy conversion process _{- the boosting process 12 of M 1} kg working medium, and the boosting process 1 g of H kg working medium are generally completed by the circulating pump, and the power consumption of the circulating pump can be provided by the expansion work or provided by the outside; M ₂ kg bootstrapping working fluid 83, and the working medium M ₃ kg boosting process 45, is generally accomplished by the compressor; M ₃ kg of working fluid down the expansion process 67, and (M ₁ + H) kg The working fluid depressurization and expansion process 89 is generally completed by an expander; the depressurization expansion work is used for the boosting power consumption, or when the depressurizing expansion work is greater than the boosting power consumption, the external mechanical energy is simultaneously output, or the depressurizing expansion work is less than When boosting power consumption, external mechanical energy is input at the same time, forming the second type of single working substance combined cycle.

The example of the second type of simplex combined cycle in the T-s diagram shown in Fig. 2/10 proceeds like this:

(1) From the perspective of the cycle process:

Working medium is carried out - M ₁ kg working fluid condensate boosting process 12, M ₁ kg working fluid endothermic heating, vaporization and superheating process 25, H kg working fluid condensate boosting process 1g, H kg working fluid and M ₃ Kilogram working medium mixed endothermic heating, vaporization and superheating process g9, M ₂ kilogram working medium pressure boosting and heating process 93, M ₂ kilogram working medium endothermic heating process 34, M ₂ kilogram working medium pressure boosting and heating process 45, M ₃ kilogram Working medium pressure increase and temperature rise process 56, M ₃ kg working medium exothermic cooling process 67, M ₃ kg working medium depressurization and expansion process 78, M ₃ kg working medium exothermic cooling process 8j, M ₃ kg working medium and H kg working medium Mass mixing exothermic cooling process j9, (M ₁ +H) kilogram working fluid decompression and expansion process 9c, (M ₁ +H) kilogram working fluid exothermic condensation process c1 - a total of 14 processes.

(2) From the perspective of energy conversion:

①Endothermic process - the endothermic process of g9 process carried out by H kg working medium is completed by the exotherm in the mixing process of _{M 3 kg working medium and H kg working medium; M 1} kg working medium is carried out for 25 process, and its endotherm is generally composed of Provided by an external heat source, wherein the endothermic heat in the low temperature section can also be provided by _{the exotherm (regeneration) of the M 3} kg working medium into the 8j process; M ₂ kg working medium is used for the 34 process, and its endothermic heat is generally provided by an external heat source; Among them, M ₁ kg working medium for 25 process and M ₂ kg working medium for 34 process endothermic heat, and can also be provided by M ₃ kg working medium for 67 process low temperature exotherm.

②Exothermic process——The exothermic process of M ₃ kg working medium for 67 process is provided to meet the corresponding heat demand, and the exothermic heat in the low temperature section can be used for M ₁ kg working medium for 25 process and M ₂ kg working medium for 34 process The high temperature section of the process is endothermic; _{the exothermic heat of the M 3} kg working fluid for the 8j process can be used for _{the endothermic demand of the M 1} kg working fluid for the 25 process at the appropriate temperature section, and the M ₃ kg working fluid is mixed in a mixed way. When the mass is cooled to 9:00, _{the exothermic heat of the (M 1} +H) kilogram working medium to perform the c1 process is generally released to the low temperature heat source (environment).

③Energy conversion process _{- the boosting process 12 of M 1} kg working medium, and the boosting process 1 g of H kg working medium are generally completed by the circulating pump, and the power consumption of the circulating pump can be provided by the expansion work or provided by the outside; The boosting processes 93 and 45 of M _{2 kilograms of working fluid, and the boosting process 56 of M 3} kilograms of working fluid are generally completed by the compressor; _{the depressurization and expansion process 78 of M 3} kilograms of working fluid, and (M ₁ +H ) The depressurization and expansion process 9c of kilogram working medium is generally completed by an expander; When the power consumption is less than the boost power consumption, mechanical energy is input from the outside at the same time, forming the second type of single working substance combined cycle.

The example of the second type of simplex combined cycle in the T-s diagram shown in Fig. 3/10 proceeds like this:

(1) From the perspective of the cycle process:

Working medium is carried out - M ₁ kg working fluid condensate boosting process 12, M ₁ kg working fluid endothermic heating, vaporization and superheating process 24, H kg working fluid condensate boosting process 1g, H kg working fluid and M ₃ Kilogram working medium mixed endothermic heating, vaporization and superheating process g9, M ₂ kilogram working medium pressure boosting and heating process 93, M ₂ kilogram working medium endothermic heating process 35, M ₁ kilogram working medium pressure boosting heating process 45, M ₃ kilogram Working medium pressure increase and temperature rise process 56, M ₃ kg working medium exothermic cooling process 67, M ₃ kg working medium depressurization and expansion process 78, M ₃ kg working medium exothermic cooling process 8j, M ₃ kg working medium and H kg working medium Mass mixing exothermic cooling process j9, (M ₁ +H) kilogram working fluid decompression and expansion process 9c, (M ₁ +H) kilogram working fluid exothermic condensation process c1 - a total of 14 processes.

(2) From the perspective of energy conversion:

① Endothermic process - the endothermic process of g9 process carried out by H kg working medium is completed by the exotherm during the mixing process of _{M 3 kg working medium and H kg working medium; M 1} kg working medium is carried out for 24 process, and its endotherm is generally composed of Provided by an external heat source, wherein the endothermic heat in the low temperature section can also be provided by _{the exothermic (regeneration) of the M 3} kg working medium into the 8j process; M ₂ kg working medium is carried out for the 35 process, and its endothermic heat is generally provided by an external heat source; Among them, M ₁ kg working medium for 24 process and M ₂ kg working medium for 35 process endothermic heat, and can also be provided by M ₃ kg working medium for 67 process low temperature exotherm.

②Exothermic process——The exothermic process of M ₃ kg working medium for 67 process is provided externally to meet the corresponding heat demand, and the exothermic heat in the low temperature section may be used for M ₁ kg working medium for 24 process and M ₂ kg working medium for 35 process The high temperature section of the process is endothermic; _{the exothermic heat of the M 3} kg working fluid for the 8j process can be used for _{the endothermic demand of the M 1} kg working fluid for the 24 process at a suitable temperature section, and the M ₃ kg working fluid is mixed in a mixed way. When the mass is cooled to 9:00, _{the exothermic heat of the (M 1} +H) kilogram working medium to perform the c1 process is generally released to the low temperature heat source (environment).

③Energy conversion process _{- the boosting process 12 of M 1} kg working medium, and the boosting process 1 g of H kg working medium are generally completed by the circulating pump, and the power consumption of the circulating pump can be provided by the expansion work or provided by the outside; M ₁ kilogram bootstrapping working fluid 45, M ₂ kilogram bootstrapping working fluid 93, and the working medium M ₃ kilogram boosting process 56, is generally accomplished by the compressor; M ₃ kilogram expanded working fluid buck Process 78, and (M ₁ +H) kilogram working fluid pressure reduction and expansion process 9c, are generally completed by an expander; Mechanical energy is output externally, or when the pressure reduction expansion work is less than the boost pressure power consumption, mechanical energy is input from the outside at the same time, forming the second type of single working substance combined cycle.

The example of the second type of single-agent combined cycle in the T-s diagram shown in Fig. 4/10 proceeds as follows:

(1) From the perspective of the cycle process:

Working medium is carried out - M ₁ kg working fluid condensate boosting process 12, M ₁ kg working fluid endothermic heating, vaporization and superheating process 23, H kg working fluid condensate boosting process 1g, H kg working fluid and M ₃ kg mixed refrigerant absorbs heat heating, vaporization and superheating process gc, M ₂ kg refrigerant boost heating process c3, M ₃ kg refrigerant endothermic heating process 34, M ₃ kg refrigerant boost heating process 45, M ₃ kg Working fluid exothermic cooling process 56, X kilogram working fluid pressure reduction and expansion process 67, (M ₃ -X) kilogram working fluid exothermic cooling process 68, (M ₃ -X) kilogram working fluid pressure reduction expansion process 89, X kilogram Working fluid exothermic cooling process 79, M ₃ kg working fluid exothermic cooling process 9j, M ₃ kg working fluid mixed with H kg working fluid Exothermic cooling process jc, (M ₁ +H) kg working fluid Depressurization and expansion process cd , (M ₁ +H) kilogram working medium exothermic condensation process d1 - a total of 16 processes.

(2) From the perspective of energy conversion:

①Endothermic process - the endothermic process of gc process with H kg working medium is completed by the exothermic process in the mixing process of _{M 3 kg working medium and H kg working medium; M 1} kg working medium for 23 process and M ₃ kg working medium Carry out the 34 process, and its endothermic is generally provided by an external heat source, wherein the endothermic of the low temperature section can also be provided by _{the exothermic (regeneration) of X kilograms of working medium to carry out the 79 process and M 3} kilograms of the working medium to enter the 7j process; wherein, The endothermic heat in the high temperature section of the 34 process with the M _{3 kg working medium can also be provided by the exotherm of the (M 3} -X) kg working medium during the 68 process.

②Exothermic process - M ₃ kg working medium is _{exothermic in process 56 and (M 3} -X) kg working medium is exothermic in process 68, and external heat is provided to meet the corresponding heat demand, and the exothermic heat in the low temperature section may be used for 34 Process heat absorption (regeneration) in the high temperature section; X kg of working medium for exothermic heat of 79 process, which can be used for M ₁ kg of working medium for 23 process low temperature section endothermic demand; M ₃ kg of working medium for the exotherm of 9j process available Carry out the endothermic requirements of the suitable temperature section of the 23 process with M _{1 kg working medium, M 3} kg working medium is exothermic in a mixed manner, and H kg working medium is cooled to point c, and (M ₁ +H) kg working medium is carried out in the d1 process. Exothermic heat is generally released to a low temperature heat source (ambient).

③Energy conversion process _{- the boosting process 12 of M 1} kg working medium, and the boosting process 1 g of H kg working medium are generally completed by the circulating pump, and the power consumption of the circulating pump can be provided by the expansion work or provided by the outside; M ₂ kg of refrigerant bootstrapping c3, and M ₃ 45 kg bootstrapping refrigerant, is generally accomplished by the compressor; X-kg depressurisation of the working fluid 67, (M ₃ -X) kilogram drop of the working fluid The pressure process 89, and the _{pressure reduction and expansion process cd of (M 1} +H) kilograms of working fluid are generally completed by the expander; At the same time, external mechanical energy is output, or when the pressure-reducing expansion work is less than the pressure-boosting power consumption, mechanical energy is input from the outside at the same time, forming the second type of single working fluid combined cycle.

The example of the second type of single-agent combined cycle in the T-s diagram shown in Fig. 5/10 proceeds as follows:

(1) From the perspective of the cycle process:

Working medium is carried out - M ₁ kg working medium condensate boosting process 12, M ₁ kg working medium endothermic heating, vaporization and superheating process 23, M ₁ kg working medium boosting and heating process 34, M ₁ kg working medium exothermic Cooling process 45, M ₁ kg working fluid depressurization and expansion process 56, M ₁ kg working fluid exothermic cooling process 6d, H kg working fluid condensate boosting process 1 g, H kg working fluid mixed with M ₃ kg working fluid to absorb heat heating, vaporization and superheating process ge, M ₂ kilogram booster working fluid heating process e7, M ₂ kilogram refrigerant endothermic heating process 78, M ₂ kilogram booster working fluid heating process 89, M ₂ kilogram refrigerant heat cooling process 9c, M ₂ kg working medium decompression and expansion process cd, M ₃ kg working medium exothermic cooling process dj, M ₃ kg working medium mixed with H kg working medium Exothermic cooling process je, (M ₁ +H) kg working medium Decompression expansion process ef, (M ₁ +H) kilogram working fluid exothermic condensation process f1 - a total of 17 processes.

(2) From the perspective of energy conversion:

① Endothermic process - the endothermic process of H kg working medium for ge process is completed by the exothermic process in the mixing process of _{M 3 kg working medium and H kg working medium; M 1} kg working medium for 23 process and M ₂ kg working medium for 23 processes Carry out the 78 process, and its endothermic heat is generally provided by an external heat source, wherein the endothermic heat in the low temperature section can also be provided by _{the exothermic heat (regeneration) of the M 1} kg working medium into the 6d process and the M ₃ kg working medium into the dj process; wherein : M ₁ kg of working medium carries out the endothermic heat in the high-temperature section of the 23 process, and can also be provided by the exothermic heat in the low-temperature section of the 45 process; M ₂ kg of working medium carries out the heat absorption in the high-temperature section of the 78 process, and can also be used for the 9c process. Low temperature section exothermic to provide.

②Exothermic process - M ₁ kg of working medium performs the exothermic heat of the 45 process, and provides external heat to meet the corresponding heat demand, and the low temperature section can be used for heat absorption (regeneration) in the high temperature section of the 23 process; M ₂ kg of working medium exotherm cooling process 9c, provide external heat to meet the respective needs, the low temperature section 78 for exothermic or endothermic process of the high temperature section (regenerator); M ₁ kilogram 6d working medium for the exothermic process, may be used M ₁ kilogram The endothermic demand of the working medium in the low temperature section of the 23 process; _{the exothermic demand of the M 3} kg working medium in the dj process can be used for _{the endothermic demand of the M 1} kg working medium in the suitable temperature section of the 23 process, and the M ₃ kg working medium is exothermic in a mixed manner. When H kg working medium is cooled to point e, _{the exothermic heat of (M 1} +H) kg working medium performing the f1 process is generally released to the low temperature heat source (environment).

③Energy conversion process _{- the boosting process 12 of M 1} kg working medium, and the boosting process 1 g of H kg working medium are generally completed by the circulating pump, and the power consumption of the circulating pump can be provided by the expansion work or provided by the outside; M ₂ kilogram refrigerants bootstrapping e7 and 89, and the working medium M ₁ kilogram of bootstrapping 34, is generally accomplished by the compressor; M ₁ kilogram of working fluid 56 is down process, the working medium M ₂ kilogram drop The pressure reduction process cd, and the (M ₁ +H) kilogram working fluid pressure reduction and expansion process ef are generally completed by the expander; At the same time, external mechanical energy is output, or when the pressure-reducing expansion work is less than the pressure-boosting power consumption, mechanical energy is input from the outside at the same time, forming the second type of single working fluid combined cycle.

The second type of single-agent combined cycle example in the T-s diagram shown in Fig. 6/10 proceeds as follows:

(1) From the perspective of the cycle process:

Working medium is carried out - M ₁ kg working medium condensate boosting process 12, M ₁ kg working medium is mixed with M kg superheated steam, endothermic heating process 2b, (M ₁ +M) kg working medium endothermic heating, vaporization and superheating Process b3, H kg working fluid condensate boosting process 1g, H kg working fluid mixed with M ₃ kg working fluid Endothermic heating, vaporization and superheating process g8, M ₂ kg working fluid boosting and heating process 8a, M kg working fluid Mixing with M ₁ kilogram of working medium exothermic condensation process ab, (M ₂ -M) kilogram of working medium pressure rise and temperature process a3, M ₃ kilogram of working medium endothermic temperature rise process 34, M ₃ kilogram of working medium pressure increase and temperature rise process 45, M ₃ kg working fluid exothermic cooling process 56, M ₃ kg working fluid decompression and expansion process 67, M ₃ kg working fluid exothermic cooling process 7j, M ₃ kg working fluid mixed with H kg working fluid Exothermic cooling process j8, (M ₁ +H) kilogram working fluid pressure reduction expansion process 89, (M ₁ +H) kilogram working fluid exothermic condensation process 91—a total of 16 processes.

(2) From the perspective of energy conversion:

①Endothermic process - the endothermic heat of H kg working medium in the g8 process is completed by the exotherm during the mixing process of _{M 3 kg working medium and H kg working medium; the endotherm of M 1} kg working medium in the 2b process comes from M kg Mixing exothermic heat of superheated steam, (M ₁ +M) kilogram of working medium for b3 process and M ₃ kilogram of working medium for 34 process, its endothermic is generally provided by an external heat source; wherein, (M ₁ +M) kilogram of working medium The endotherm in the low temperature section of the b3 process can also be provided by _{the exotherm (regeneration) of the M 3} kg working medium in the 7j process, and the M ₃ kg working medium in the 34 process. Exothermic to provide.

②Exothermic process - M ₃ kg working medium carries out the exothermic heat of 56 process, and provides external heat to meet the corresponding heat demand, in which the low temperature section exothermic or can be used for 34 process high temperature section heat absorption (regeneration); M ₃ kg working medium The exothermic heat of the 7j process can be used for (M ₁ +M) kilograms of working fluid to carry out the endothermic needs of the b3 process at the appropriate temperature section, M ₃ kilograms of working fluids are mixed with H kilograms of working fluid to cool down to 8 points, (M _{The exothermic heat of 1} + H) kg working medium to carry out the 91 process is generally released to the low temperature heat source (environment).

③Energy conversion process _{- the boosting process 12 of M 1} kg working medium, and the boosting process 1 g of H kg working medium are generally completed by the circulating pump, and the power consumption of the circulating pump can be provided by the expansion work or provided by the outside; M ₂ kg of working fluid boosting process and 8a (M ₂ -M) kg working fluid boosting process a3, and M ₃ kg bootstrapping working fluid 45, is generally accomplished by the compressor; M ₃ kg refrigerants The depressurization and expansion process 67 and the (M ₁ +H) kilogram working fluid depressurization and expansion process 89 are generally completed by an expander; When the power is consumed, the mechanical energy is output to the outside at the same time, or when the pressure reduction expansion work is less than the boost power consumption, the mechanical energy is input from the outside at the same time, forming the second type of single working fluid combined cycle.

The second type of single-agent combined cycle example in the T-s diagram shown in Fig. 7/10 proceeds as follows:

(1) From the perspective of the cycle process:

The working medium is carried out—the M ₁ kg working medium condensate pressurization process 12, _{the mixing endothermic heating process 2b of the M 1} kg working medium and the M kg working medium, the (M ₁ +M) kg working medium endothermic heating, vaporization and Overheating process b5, H kg working fluid condensate boosting process 1g, H kg working fluid mixed with M ₃ kg working fluid and endothermic heating, vaporization and superheating process g9, M ₂ kg working fluid boosting and heating process 9a, M kg working fluid Mixing exothermic condensation process ab of mass and M _{1 kg working substance, (M 2} -M) kg working substance boosting and heating process a3, (M ₂ -M) kg working substance endothermic heating process 34, (M ₂ -M ) kg refrigerant boost heating process 45, M ₃ kg refrigerant boost heating process 56, M ₃ kg refrigerant heat cooling process 67, M ₃ kg refrigerant expansion process down 78, M ₃ kg refrigerant heat Cooling process 8j, M ₃ kg working fluid mixed with H kg working fluid and exothermic cooling process j9, (M ₁ +H) kg working fluid decompression and expansion process 9c, (M ₁ +H) kg working fluid exothermic condensation process c1 - A total of 17 processes.

(2) From the perspective of energy conversion:

① Endothermic process - the endothermic heat of H kg working medium in the g9 process is completed by the exotherm during the mixing process of _{M 3 kg working medium and H kg working medium; the endotherm of M 1} kg working medium in the 2b process comes from M kg Mixing and exothermic heat of superheated steam, (M ₁ +M) kilogram working medium is used for b5 process, and its endothermic heat is generally provided by an external heat source; (M ₂ -M) kilogram working medium is used for 34 process, and its heat absorption is generally provided by an external heat source to provide; wherein, (M ₁ +M) kilograms of working fluid to perform b5 process low temperature section of the endothermic can also be provided by M ₃ kilograms of working fluid into 8j process exotherm (regeneration) to provide, (M ₁ +M) kilograms of working fluid The endothermic heat in the high temperature section of the process b5 and the (M ₂ -M) kg working medium of the process 34 can also be provided by the exotherm of the low temperature section of the process 67 carried out _{by the M 3 kg working medium.}

②Exothermic process - M ₃ kg working medium performs the exothermic process of 67, and provides external heat to meet the corresponding heat demand, and the exothermic heat in the low temperature section may be used for (M ₁ +M) kg working medium for b5 process and (M _{2 )} -M) endothermic heat in the high temperature section of the 34 process with M ₃ kg of working medium; M 3 kg of working medium for the exothermic heat of the 8j process can be used for (M ₁ +M) kg of working medium for the endothermic demand of the b5 process at the appropriate temperature section, M ₃ The kilogram working fluid is exothermic in a mixed manner to the H kilogram working fluid and cools down to 9 o'clock, and the exotherm of the (M ₁ +H) kilogram working fluid in the c1 process is generally released to the low temperature heat source (environment).

③Energy conversion process _{- the boosting process 12 of M 1} kg working medium, and the boosting process 1 g of H kg working medium are generally completed by the circulating pump, and the power consumption of the circulating pump can be provided by the expansion work or provided by the outside; M ₂ kg of refrigerant bootstrapping 9a, (M ₂ -M) kg refrigerants bootstrapping a3 and 45, and the working medium M ₃ kg boosting process 56, is generally accomplished by the compressor; M ₃ kg The depressurization and expansion process 78 of the working fluid, and the _{depressurization and expansion process 9c of the (M 1} +H) kilogram working fluid are generally completed by an expander; When boosting power consumption, external mechanical energy is output at the same time, or when the step-down expansion work is less than the boosting power consumption, mechanical energy is input from the outside at the same time, forming the second type of single working substance combined cycle.

The example of the second type of single-agent combined cycle in the T-s diagram shown in Fig. 8/10 proceeds as follows:

(1) From the perspective of the cycle process:

The working medium is carried out—the M ₁ kg working medium condensate pressurization process 12, _{the mixing endothermic heating process 2b of the M 1} kg working medium and the M kg working medium, the (M ₁ +M) kg working medium endothermic heating, vaporization and Overheating process b4, H kg working fluid condensate boosting process 1g, H kg working fluid mixed with M ₃ kg working fluid, endothermic heating, vaporization and superheating process g9, M ₂ kg working fluid boosting and heating process 9a, M kg working fluid Mixing exothermic condensation process ab of mass and M _{1 kg working medium, (M 2} -M) kg working medium pressure increasing process a3, (M ₂ -M) kg working medium endothermic heating process 35, (M ₁ +M ) kg refrigerant boost heating process 45, M ₃ kg refrigerant boost heating process 56, M ₃ kg refrigerant heat cooling process 67, M ₃ kg refrigerant expansion process down 78, M ₃ kg refrigerant heat Cooling process 8j, M ₃ kg working fluid mixed with H kg working fluid and exothermic cooling process j9, (M ₁ +H) kg working fluid decompression and expansion process 9c, (M ₁ +H) kg working fluid exothermic condensation process c1 - A total of 17 processes.

(2) From the perspective of energy conversion:

① Endothermic process - the endothermic heat of H kg working medium in the g9 process is completed by the exotherm during the mixing process of _{M 3 kg working medium and H kg working medium; the endotherm of M 1} kg working medium in the 2b process comes from M kg Mixing and exothermic heat of superheated steam, (M ₁ +M) kilogram of working fluid is used for b4 process, and its endothermic heat is generally provided by an external heat source; (M ₂ -M) kilogram of working fluid is used for 35 process, and its endothermic heat is generally provided by an external heat source to provide; wherein, (M ₁ +M) kilograms of working medium to carry out b4 process low temperature end heat can also be provided by M ₃ kilograms of working fluid into 8j process exotherm (regeneration) to provide, (M ₁ +M) kilograms of working fluid The endothermic heat in the high temperature section of the process b4 and the process of (M ₂ -M) kilogram of 35 can also be provided by the exotherm of the low temperature section of the process of 67 carried out _{by M 3 kilogram of the working medium.}

②Exothermic process - M ₃ kg working medium is exothermic in 67 process, and externally provided to meet the corresponding heat demand, and the exothermic heat in the low temperature section can be used for (M ₁ +M) kg working medium for b4 process and (M _{2 )} -M) kilogram of working medium to carry out the heat absorption in the high temperature section of the 35 process; M ₃ kilograms of the working medium to carry out the 8j process exothermic heat can be used for (M ₁ +M) kilogram of the working medium to carry out the endothermic demand of the b4 process at the appropriate temperature section, M ₃ The kilogram working fluid is exothermic in a mixed manner to the H kilogram working fluid and cools down to 9 o'clock, and the exotherm of the (M ₁ +H) kilogram working fluid in the c1 process is generally released to the low temperature heat source (environment).

③Energy conversion process _{- the boosting process 12 of M 1} kg working medium, and the boosting process 1 g of H kg working medium are generally completed by the circulating pump, and the power consumption of the circulating pump can be provided by the expansion work or provided by the outside; M ₂ kg of refrigerant bootstrapping 9a, (M ₂ -M) kg working fluid boosting process a3, (M ₁ + M) bootstrapping kg working fluid 45, and the working medium M ₃ kg boost The process 56 is generally completed by the compressor; _{the depressurization and expansion process 78 of M 3} kilograms of working fluid, and the (M ₁ +H) kilogram of working fluid depressurization and expansion process 9c are generally completed by the expander; the function of depressurization and expansion When the power consumption of boosting, or the work of bucking expansion is greater than the power consumption of boosting, mechanical energy is output externally, or when the work of buckling expansion is less than the power consumption of boosting, mechanical energy is input from the outside at the same time, forming the second type of single working fluid combined cycle .

The example of the second type of single-agent combined cycle in the T-s diagram shown in Figure 9/10 proceeds as follows:

(1) From the perspective of the cycle process:

The working medium is carried out—the M ₁ kg working medium condensate pressurization process 12, _{the mixing endothermic heating process 2b of the M 1} kg working medium and the M kg working medium, the (M ₁ +M) kg working medium endothermic heating, vaporization and Overheating process b3, H kg working fluid condensate boosting process 1g, H kg working fluid mixed with M ₃ kg working fluid, endothermic heating, vaporization and superheating process gc, M ₂ kg working fluid boosting and heating process ca, M kg working fluid Mixing exothermic condensation process ab of mass and M _{1 kilogram working medium, (M 2} -M) kilogram working medium boosting and heating process a3, M ₃ kilogram working medium endothermic heating process 34, M ₃ kilogram working medium boosting and heating process 45, M ₃ kilograms of working medium exothermic cooling process 56, X kilograms of working medium pressure reduction expansion process 67, (M ₃ -X) kilograms of working medium exothermic cooling process 68, (M ₃ -X) kilograms of working medium pressure reduction expansion Process 89, X kg working fluid exothermic cooling process 79, M ₃ kg working fluid exothermic cooling process 9j, M ₃ kg working fluid mixed with H kg working fluid Exothermic cooling process jc, (M ₁ +H) kg working fluid Decompression expansion process cd, (M ₁ +H) kilogram working medium exothermic condensation process d1 - a total of 19 processes.

(2) From the perspective of energy conversion:

① Endothermic process - the endothermic heat of H kg working medium in the gc process is completed by the exotherm in the mixing process of _{M 3 kg working medium and H kg working medium; the endotherm of M 1} kg working medium in the 2b process comes from M kg Mixing exothermic heat of superheated steam, (M ₁ +M) kilogram of working medium for b3 process and M ₃ kilogram of working medium for 34 process, its endothermic is generally provided by an external heat source; wherein, (M ₁ +M) kilogram of working medium The endotherm in the low temperature section of the b3 process can also be provided by _{the exotherm (regeneration) of the 79 process carried out by X kilograms of working fluid and the exotherm (regeneration) of the M 3} kilograms of working fluid into the 9j process, and the endotherm of M ₃ kilograms of the working fluid in the high temperature section of the 34 process is also provided. It can be provided by the exotherm of the 68 process with _{(M 3 -X) kg working substance.}

②Exothermic process - M ₃ kg working medium is _{exothermic in process 56 and (M 3} -X) kg working medium is exothermic in process 68, and external heat is provided to meet the corresponding heat demand, and the exothermic heat in the low temperature section may be used for 34 Process heat absorption (regeneration) in the high temperature section; X kilograms of working medium carry out the exothermic heat of 79 process, which can be used for (M ₁ +M) kilograms of working medium to carry out the endothermic demand of the b3 process suitable temperature section; M ₃ kilograms of working medium to carry out 9j exothermic process may be used (M ₁ + M) b3 kg working fluid for a suitable process temperature ranges endothermic requirements, M ₃ kg working fluid in a mixed manner exothermic kg H refrigerant cooled to the point c, (M ₁ +H) The exothermic heat of the d1 process carried out by the kilogram working substance is generally released to the low temperature heat source (environment).

③Energy conversion process _{- the boosting process 12 of M 1} kg working medium, and the boosting process 1 g of H kg working medium are generally completed by the circulating pump, and the power consumption of the circulating pump can be provided by the expansion work or provided by the outside; M ₂ kg of refrigerant and bootstrapping ca (M ₂ -M) kg working fluid boosting process a3, and M ₃ 45 kg bootstrapping refrigerant, is generally accomplished by the compressor; X-working fluid drop kg The pressure reduction process 67, _{the pressure reduction process 89 of (M 3} -X) kilogram working fluid, and the _{pressure reduction and expansion process cd of (M 1} +H) kilogram working fluid are generally completed by an expander; the pressure reduction expansion work is used for pressure increase Power consumption, or when the pressure reduction expansion work is greater than the pressure boost power consumption, the external mechanical energy is simultaneously output, or when the pressure reduction expansion work is less than the pressure boost power consumption, the mechanical energy is input from the outside at the same time, forming the second type of single working fluid combined cycle.

The example of the second type of single-agent combined cycle in the T-s diagram shown in Figure 10/10 proceeds like this:

(1) From the perspective of the cycle process:

The working medium is carried out—the M ₁ kg working medium condensate pressurization process 12, _{the mixing endothermic heating process 2b of the M 1} kg working medium and the M kg working medium, the (M ₁ +M) kg working medium endothermic heating, vaporization and Overheating process b3, (M ₁ +M) kilogram working fluid pressure increase and temperature rise process 34, (M ₁ +M) kilogram working fluid exothermic cooling process 45, (M ₁ +M) kilogram working fluid pressure reduction and expansion process 56, ( M ₁ +M) kilogram working fluid exothermic cooling process 6d, H kilogram working fluid condensate boosting process 1g, H kilogram working fluid mixed with M ₃ kilogram working fluid and endothermic heating, vaporization and superheating process ge, M ₂ kilogram working fluid Mass pressure boosting and heating process ea, mixed exothermic condensation process ab of _{M kg working fluid and M 1 kg working fluid, (M 2} -M) kg working fluid boosting and heating process a7, (M ₂ -M) kg working fluid suction Thermal heating process 78, (M ₂ -M) kilogram working fluid pressure increasing process 89, (M ₂ -M) kilogram working fluid exothermic cooling process 9c, (M ₂ -M) kilogram working fluid pressure reducing expansion process cd, M ₃ kg working fluid exothermic cooling process dj, M ₃ kg working fluid mixed with H kg working fluid exothermic cooling process je, (M ₁ +H) kg working fluid pressure reduction and expansion process ef, (M ₁ +H) kg Working fluid exothermic condensation process f1 - a total of 20 processes.

(2) From the perspective of energy conversion:

① Endothermic process - the endothermic heat of H kg working medium in the ge process is completed by the exotherm in the mixing process of _{M 3 kg working medium and H kg working medium; the endothermic heat of M 1} kg working medium in the 2b process comes from M kg The mixing and exothermic heat of superheated steam, (M ₁ +M) kilogram working fluid for b3 process and (M ₂ -M) kilogram working fluid for 78 process, the heat absorption is generally provided by external heat sources, and the endothermic heat in the low temperature section can also be obtained by (M ₁ +M) kilogram of working fluid _{is provided by the exotherm of the 6d process and M 3} kilogram of working fluid in the dj process; wherein, _{the heat absorption of the (M 1} +M) kilogram of working fluid in the high temperature section of the b3 process can also be derived from its It is provided by the exotherm in the low temperature section of the 45 process; the endotherm of the (M ₂ -M) kilogram working medium in the high temperature section of the 78 process can also be provided by the exotherm in the low temperature section of the 9c process.

②Exothermic process - (M ₁ +M) kilograms of working medium carry out the exothermic heat of the 45 process, and provide external heat to meet the corresponding heat demand, in which the low temperature section exothermic or can be used for b3 process high temperature section heat absorption (regeneration); ( M ₂ -M) kilogram working medium exothermic cooling process 9c, externally provided to meet the corresponding heat demand, wherein the low temperature section exothermic or can be used for 78 process high temperature section heat absorption (regeneration); (M ₁ +M) working medium is carried out 6d exothermic process, may be used (M ₁ + M) kg refrigerant endothermic process needs b3 suitable temperature section; M ₃ kg refrigerant dj exothermic process may be used (M ₁ + M) kg refrigerants To carry out the endothermic requirements of the suitable temperature section of the b3 process, the M ₃ kg working fluid is mixed with the H kg working fluid to cool down to point e, and the (M ₁ +H) kg working fluid is generally exothermic in the f1 process. (environment) release.

③Energy conversion process _{- the boosting process 12 of M 1} kg working medium, and the boosting process 1 g of H kg working medium are generally completed by the circulating pump, and the power consumption of the circulating pump can be provided by the expansion work or provided by the outside; M ₂ kg working fluid boosting process ea, (M ₂ -M) kg working fluid boosting process a7, (M ₁ +M) kg working fluid boosting process 34, (M ₂ -M) kg working fluid The step-up process 89 of the _{working fluid is generally completed by the compressor; (M 1} +M) the depressurization process 56 of the kilogram working fluid, (M ₂ -M) the depressurization process cd of the kilogram working fluid, and (M ₁ +H) The pressure reduction and expansion process ef of kilograms of working fluid is generally completed by an expander; the pressure reduction expansion work is used for boosting power consumption, or when the pressure reduction expansion work is greater than the pressure boosting power consumption, mechanical energy is output externally at the same time, or the pressure reduction expansion work When the power consumption is less than the boosting power consumption, mechanical energy is input from the outside at the same time, forming the second type of single working substance combined cycle.

The effect that the technology of the present invention can achieve—the second type of single working medium combined cycle proposed by the present invention has the following effects and advantages:

(1) New ideas and new technologies for temperature difference utilization are proposed.

(2) Thermal energy (temperature difference) drive, to achieve thermal energy temperature increase, or to provide external power at the same time.

(3) The method is simple, the process is reasonable, and the applicability is good. It is a common technology to realize the effective utilization of temperature difference.

(4) When necessary, the temperature of thermal energy can be increased with the help of some external power, which is flexible and adaptable.

(5) The phase change process or the phase change process mainly realizes low temperature heat release, which is beneficial to reduce the heat transfer temperature difference in the low temperature heat load release link and improve the cycle performance index.

(6) The variable temperature process or the variable temperature process mainly realizes the heat absorption at the medium temperature, which is beneficial to reduce the heat transfer temperature difference in the acquisition of the medium temperature heat load and improve the cycle performance index.

(7) The variable temperature releases heat, which is conducive to reducing the heat transfer temperature difference in the heating link and realizing the rationalization of the cycle performance index.

(8) A single working fluid is beneficial to production and storage; reduce operating costs and improve the flexibility of cycle adjustment

(9) Process sharing, reduce the number of processes, and provide a theoretical basis for reducing equipment investment.

(10) A wide range of working fluid parameters enables high-efficiency high-temperature heating; it can well adapt to energy supply requirements, and the matching between working fluid and working parameters is flexible.

(11) It has a lower pressure and cycle compression ratio, which provides convenience for the selection and manufacture of core equipment; provides a theoretical basis for reducing the working pressure of the temperature difference utilization heat pump system and improving the safety of the device.

(12) The combination of hybrid heat exchange and indirect heat exchange can flexibly adapt to the relationship between heat exchange equipment and energy utilization.

(13) The thermodynamic cycle range for realizing temperature difference utilization is expanded, which is beneficial to better realize the efficient heat utilization of the medium-temperature heat source and the variable-medium-temperature heat source.

Claims (10)

The second type of single working fluid combined cycle refers _{to the thirteen processes carried out by M 1} kg, M ₂ kg and H kg working fluids, respectively or jointly - M ₁ kg working fluid boosting process 12, M ₁ kg working fluid Mass endothermic vaporization process 23, H kg working fluid boosting process 1g, H kg working fluid mixed with M ₃ kg working fluid Endothermic process g8, M ₂ kg working fluid boosting process 83, M ₃ kg working fluid endothermic process 34, M ₃ kg working fluid boosting process 45, M ₃ kg working fluid exothermic process 56, M ₃ kg working fluid depressurization process 67, M ₃ kg working fluid exothermic process 7j, M ₃ kg working fluid and H kg Working fluid mixing exothermic process j8, (M ₁ +H) kilogram working fluid depressurization process 89, (M ₁ +H) kilogram working fluid exothermic condensation process 91—a closed process composed of; wherein, M ₃ is M ₁ Sum with M ₂ . The second type of single working fluid combined cycle refers _{to the fourteen processes carried out by M 1} kg, M ₂ kg and H kg working fluids, respectively or jointly—M ₁ kg working fluid boosting process 12, M ₁ kg working fluid Mass endothermic vaporization process 25, H kg working fluid boosting process 1g, H kg working fluid mixed with M ₃ kg working fluid Endothermic process g9, M ₂ kg working fluid boosting process 93, M ₂ kg working fluid endothermic process 34, M ₂ kg working fluid boosting process 45, M ₃ kg working fluid boosting process 56, M ₃ kg working fluid exothermic process 67, M ₃ kg working fluid depressurization process 78, M ₃ kg working fluid exothermic process 8j, M ₃ kg working medium mixed with H kg working medium and exothermic process j9, (M ₁ +H) kg working medium depressurization process 9c, (M ₁ +H) kg working medium exothermic condensation process c1 - composed of A closed process; where M ₃ is the sum _{of M 1} and M _{2 .} The second type of single working fluid combined cycle refers _{to the fourteen processes carried out by M 1} kg, M ₂ kg and H kg working fluids, respectively or jointly—M ₁ kg working fluid boosting process 12, M ₁ kg working fluid Mass endothermic vaporization process 24, H kg working fluid boosting process 1g, H kg working fluid mixed with M ₃ kg working fluid Endothermic process g9, M ₂ kg working fluid boosting process 93, M ₂ kg working fluid endothermic process 35, M ₁ kg working fluid boosting process 45, M ₃ kg working fluid boosting process 56, M ₃ kg working fluid exothermic process 67, M ₃ kg working fluid depressurizing process 78, M ₃ kg working fluid exothermic process 8j, M ₃ kg working medium mixed with H kg working medium and exothermic process j9, (M ₁ +H) kg working medium depressurization process 9c, (M ₁ +H) kg working medium exothermic condensation process c1 - composed of A closed process; where M ₃ is the sum _{of M 1} and M _{2 .} The second type of single working fluid combined cycle refers _{to the sixteen processes carried out by M 1} kg, M ₂ kg and H kg working fluids, respectively or jointly—M ₁ kg working fluid boosting process 12, M ₁ kg working fluid Mass endothermic vaporization process 23, H kg working fluid boosting process 1g, H kg working fluid mixed with M ₃ kg working fluid Endothermic process gc, M ₂ kg working fluid boosting process c3, M ₃ kg working fluid endothermic process 34, M ₃ kg working fluid boosting process 45, M ₃ kg working fluid exothermic process 56, X kg working fluid depressurizing process 67, (M ₃ -X) kg working fluid exothermic process 68, (M ₃ -X ) Kilogram working medium depressurization process 89, X kg working medium exothermic process 79, M ₃ kg working medium exothermic process 9j, M ₃ kg working medium mixed with H kg working medium exothermic process jc, (M ₁ +H) Kilogram working medium depressurization process cd, (M ₁ +H) Kilogram working medium exothermic condensation process d1 - a closed process composed of; wherein, M ₃ is the sum _{of M 1} and M _{2 .} The second type of single working fluid combined cycle refers _{to the seventeen processes carried out by M 1} kg, M ₂ kg and H kg working fluids, respectively or jointly - M ₁ kg working fluid boosting process 12, M ₁ kg working fluid Mass endothermic vaporization process 23, M ₁ kg working fluid boosting process 34, M ₁ kg working fluid exothermic process 45, M ₁ kg working fluid depressurization 56, M ₁ kg working fluid exothermic process 6d, H kg working fluid Mass boosting process 1g, H kg working medium mixed with M ₃ kg working medium endothermic process ge, M ₂ kg working medium boosting process e7, M ₂ kg working medium endothermic process 78, M ₂ kg working medium boosting process 89, M ₂ kg working medium exothermic process 9c, M ₂ kg working medium depressurization process cd, M ₃ kg working medium exothermic process dj, M ₃ kg working medium mixed with H kg working medium Exothermic process je, (M ₁ +H) kilogram working fluid depressurization process ef, (M ₁ +H) kilogram working fluid exothermic condensation process f1—a closed process of composition; wherein, M ₃ is the sum _{of M 1} and M _{2 .} The second type of single working fluid combined cycle refers _{to the sixteen processes carried out by M 1} kg, M ₂ kg and H kg working fluids, respectively or jointly—M ₁ kg working fluid boosting process 12, M ₁ kg working fluid Mass endothermic process 2b, (M ₁ +M) kilogram working fluid endothermic vaporization process b3, H kilogram working fluid boosting process 1g, H kilogram working fluid mixed with M ₃ kilogram working fluid endothermic process g8, M ₂ kilogram working fluid endothermic process g8 Mass boosting process 8a, M kg working fluid exothermic condensation process ab, (M ₂ -M) kg working fluid boosting process a3, M ₃ kg working fluid endothermic process 34, M ₃ kg working fluid boosting process 45, M ₃ kg working fluid exothermic process 56, M ₃ kg working fluid depressurization process 67, M ₃ kg working fluid exothermic process 7j, M ₃ kg working fluid mixed with H kg working fluid exothermic process j8, (M ₁ + H) Kilogram working fluid depressurization process 89, (M ₁ +H) Kilogram working fluid exothermic condensation process 91 - closed processes of composition; wherein, M ₃ is the sum _{of M 1} and M _{2 .} The second type of single working fluid combined cycle refers _{to the seventeen processes carried out by M 1} kg, M ₂ kg and H kg working fluids, respectively or jointly - M ₁ kg working fluid boosting process 12, M ₁ kg working fluid Mass endothermic process 2b, (M ₁ +M) kilogram working fluid endothermic vaporization process b5, H kilogram working fluid boosting process 1g, H kilogram working fluid mixed with M ₃ kilogram working fluid endothermic process g9, M ₂ kilogram working fluid endothermic process g9 Mass boosting process 9a, M kg working fluid exothermic condensation process ab, (M ₂ -M) kg working fluid boosting process a3, (M ₂ -M) kg working fluid endothermic process 34, (M ₂ -M) Kilogram working fluid boosting process 45, M ₃ kg working fluid boosting process 56, M ₃ kg working fluid exothermic process 67, M ₃ kg working fluid depressurizing process 78, M ₃ kg working fluid exothermic process 8j, M ₃ kg kg H working fluid and working fluid mixture exothermic process j9, (M ₁ + H) kg working fluid depressurisation 9c, (M ₁ + H) kg refrigerant radiates heat and condenses during the closing process c1-- thereof; wherein , M ₃ M ₁ and M ₂ to the sum. The second type of single working fluid combined cycle refers _{to the seventeen processes carried out by M 1} kg, M ₂ kg and H kg working fluids, respectively or jointly - M ₁ kg working fluid boosting process 12, M ₁ kg working fluid Mass endothermic process 2b, (M ₁ +M) kilogram working fluid endothermic vaporization process b4, H kilogram working fluid boosting process 1g, H kilogram working fluid mixed with M ₃ kilogram working fluid endothermic process g9, M ₂ kilogram working fluid endothermic process g9 Mass boosting process 9a, M kg working fluid exothermic condensation process ab, (M ₂ -M) kg working fluid boosting process a3, (M ₂ -M) kg working fluid endothermic process 35, (M ₁ +M) Kilogram working fluid boosting process 45, M ₃ kg working fluid boosting process 56, M ₃ kg working fluid exothermic process 67, M ₃ kg working fluid depressurizing process 78, M ₃ kg working fluid exothermic process 8j, M ₃ kg kg H working fluid and working fluid mixture exothermic process j9, (M ₁ + H) kg working fluid depressurisation 9c, (M ₁ + H) kg refrigerant radiates heat and condenses during the closing process c1-- thereof; wherein , M ₃ M ₁ and M ₂ to the sum. The second type of single working fluid combined cycle refers to _{nineteen processes carried out by M 1} kg, M ₂ kg and H kg working fluids, respectively or jointly—M ₁ kg working fluid boosting process 12, M ₁ kg working fluid Mass endothermic process 2b, (M ₁ +M) kilogram working fluid endothermic vaporization process b3, H kilogram working fluid boosting process 1g, H kilogram working fluid mixed with M ₃ kilogram working fluid endothermic process gc, M ₂ kilogram working fluid endothermic process gc Mass boosting process ca, M kg working fluid exothermic condensation process ab, (M ₂ -M) kg working fluid boosting process a3, M ₃ kg working fluid endothermic process 34, M ₃ kg working fluid boosting process 45, M ₃ kg working fluid exothermic process 56, X kg working fluid depressurization process 67, (M ₃ -X) kg working fluid exothermic process 68, (M ₃ -X) kg working fluid depressurization process 89, X kg working fluid Mass exothermic process 79, M ₃ kg working fluid exothermic process 9j, M ₃ kg working fluid mixed with H kg working fluid exothermic process jc, (M ₁ +H) kg working fluid depressurization process cd, (M ₁ + H) Kilogram working fluid exothermic condensation process d1—a closed process of composition; wherein, M ₃ is the sum _{of M 1} and M _{2 .} The second type of single working fluid combined cycle refers to _{twenty processes carried out by M 1} kg, M ₂ kg and H kg working fluids, respectively or jointly—M ₁ kg working fluid boosting process 12, M ₁ kg working fluid Mass endothermic process 2b, (M ₁ +M) kilogram working fluid endothermic vaporization process b3, (M ₁ +M) kilogram working fluid boosting process 34, (M ₁ +M) kilogram working fluid exothermic process 45, ( M ₁ +M) kilogram working fluid is depressurized by 56, (M ₁ +M) kilogram working fluid exothermic process 6d, H kilogram working fluid boosting process 1g, H kilogram working fluid mixed with M ₃ kilogram working fluid and endothermic process ge, M ₂ kg working fluid boosting process ea, M kg working fluid exothermic condensation process ab, (M ₂ -M) kg working fluid boosting process a7, (M ₂ -M) kg working fluid endothermic process 78, (M ₂ -M) kilogram working fluid boosting process 89, (M ₂ -M) kilogram working fluid exothermic process 9c, (M ₂ -M) kilogram working fluid depressurizing process cd, M ₃ kilogram working fluid exothermic process dj, M ₃ kg working medium and H kg working medium mixed exothermic process je, (M ₁ +H) kg working medium depressurization process ef, (M ₁ +H) kg working medium exothermic condensation process f1 - composed of A closed process; where M ₃ is the sum _{of M 1} and M _{2 .}

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