CN110631280A - Multidirectional thermodynamic cycle of the second kind - Google Patents
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- 230000002427 irreversible effect Effects 0.000 description 28
- 230000002441 reversible effect Effects 0.000 description 28
- 238000010586 diagram Methods 0.000 description 14
- 230000006837 decompression Effects 0.000 description 12
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K27/00—Plants for converting heat or fluid energy into mechanical energy, not otherwise provided for
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- 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
- F25B1/00—Compression machines, plants or systems with non-reversible cycle
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- 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
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Abstract
The invention provides a second type of multidirectional thermodynamic cycle, and belongs to the technical field of thermodynamics, power, heat supply and heat pumps. The working medium sequentially carries out the following processes of heat absorption from a medium-temperature heat source 12, pressure increase from the medium temperature 23, heat release from a first high-temperature heat source 34, pressure reduction from the first high temperature 45, heat release from a low-temperature heat source 56, pressure increase from the low temperature 67, heat release from a second high-temperature heat source 78 and pressure reduction from the second high temperature 81 to form a closed process 123456781, and a second type of multidirectional thermodynamic cycle is formed.
Description
The technical field is as follows:
the invention belongs to the technical field of thermodynamics, power, heat supply and heat pumps.
Background art:
cold demand, heat demand and power demand are common in human life and production. 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; meanwhile, people also need to convert medium-temperature heat resources into high-temperature heat resources to meet the high-temperature heat demand, and the temperature difference between the medium-temperature heat resources and the low-temperature cold sources needs to be simply, actively and efficiently utilized. 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 corresponding second type multidirectional thermodynamic cycle based on the principle of simply, actively and efficiently realizing temperature difference utilization, aiming at the conditions that temperature difference exists between a medium-temperature heat source and a low-temperature cold source and requirements of different-grade high-temperature heat exist, considering power resource utilization and meeting various energy requirements, namely single supply or combined supply of heat and power.
The invention content is as follows:
the invention mainly aims to provide a second type of multidirectional thermodynamic cycle, and the specific invention content is explained in terms of the following:
1. the second kind of multidirectional thermodynamic cycle is a closed process 123456781 which is composed of eight processes, namely a working medium heat absorption process 12 from a medium-temperature heat source, a pressure increasing process 23 from the medium temperature, a heat release process 34 to a first high-temperature heat source, a pressure decreasing process 45 from the first high temperature, a heat release process 56 to a low-temperature heat source, a pressure increasing process 67 from the low temperature, a heat release process 78 to a second high-temperature heat source, and a pressure decreasing process 81 from the second high temperature, which are sequentially performed among a first high-temperature heat source, a second high-temperature heat source, a medium-temperature heat source and a low-temperature cold source.
2. The second kind of multidirectional thermodynamic cycle is a non-closed process 12345678 which works among a first high-temperature heat source, a second high-temperature heat source, a medium-temperature heat source and a low-temperature cold source, and consists of seven processes which are sequentially carried out, namely a pressure increasing process 12 of a cold source medium from low temperature, a heat releasing process 23 to the second high-temperature heat source, a pressure decreasing process 34 from second high temperature, a heat absorbing process 45 from the medium-temperature heat source, a pressure increasing process 56 from medium temperature, a heat releasing process 67 to the first high-temperature heat source, and a pressure decreasing process 78 from first high temperature.
3. The second kind of multidirectional thermodynamic cycle is a non-closed process 12345678 which works among a first high-temperature heat source, a second high-temperature heat source, a medium-temperature heat source and a low-temperature cold source, and consists of seven processes which are sequentially carried out, namely a pressure increasing process 12 of a medium-temperature heat source medium from the medium temperature, a heat releasing process 23 of the medium-temperature heat source, a pressure reducing process 34 from the first high temperature, a heat releasing process 45 of the low-temperature cold source, a pressure increasing process 56 from the low temperature, a heat releasing process 67 of the second high-temperature heat source and a pressure reducing process 78 from the second high temperature.
4. The second kind of multidirectional thermodynamic cycle is a non-closed process 12345678 which works among a first high-temperature heat source, a second high-temperature heat source, a medium-temperature heat source and a low-temperature cold source and consists of seven processes which are sequentially carried out, namely a pressure reduction process 12 of a heated medium from the second high temperature, a heat absorption process 23 of the medium-temperature heat source, a pressure increase process 34 of the medium-temperature heat source, a heat release process 45 of the first high-temperature heat source, a pressure reduction process 56 of the first high temperature, a heat release process 67 of the low-temperature cold source and a pressure increase process 78 of the low temperature.
5. The second kind of multidirectional thermodynamic cycle is a non-closed process 12345678 which works among a first high-temperature heat source, a second high-temperature heat source, a medium-temperature heat source and a low-temperature cold source, and consists of seven processes which are sequentially carried out, namely a depressurization process 12 of a heated medium from a first high temperature, a heat release process 23 of the heated medium to the low-temperature cold source, a pressure boosting process 34 from a low temperature, a heat release process 45 of the heated medium to the second high-temperature heat source, a depressurization process 56 from a second high temperature, a heat absorption process 67 of the medium-temperature heat source and a pressure boosting process 78 from a medium temperature.
Description of the drawings:
fig. 1 is an exemplary schematic flow diagram of group 1 of a second type of multidirectional thermodynamic cycle provided in accordance with the present invention.
Fig. 2 is an exemplary schematic flow diagram of group 2 of a second type of multidirectional thermodynamic cycle provided in accordance with the present invention.
Fig. 3 is an exemplary schematic flow diagram of group 3 of the second type of multidirectional thermodynamic cycle provided in accordance with the present invention.
Fig. 4 is an exemplary schematic flow diagram of group 4 of the second type of multidirectional thermodynamic cycle provided in accordance with the present invention.
Fig. 5 is an exemplary schematic flow diagram of group 5 of a second type of multidirectional thermodynamic cycle provided in accordance with the present invention.
Fig. 6 is an exemplary schematic flow diagram of group 6 of a second type of multidirectional thermodynamic cycle provided in accordance with the present invention.
Fig. 7 is an exemplary schematic flow diagram of group 7 of a second type of multidirectional thermodynamic cycle provided in accordance with the present invention.
For ease of understanding, the following description is given:
(1) high temperature heat source-the material that gets the heat load, the temperature is the highest, such as the heated medium; the high-temperature heat source has two, namely a first high-temperature heat source and a second high-temperature heat source.
(2) Medium temperature heat source-a substance providing medium temperature heat load, the temperature of which is lower than that of the high temperature heat source, also called as waste heat medium; one part of the heat load provided by the medium-temperature heat source is used as a driving heat load of the thermodynamic cycle, and the other part of the heat load is used as a heating heat load of the thermodynamic cycle.
(3) Low temperature cold source-the substance that takes away the low temperature heat load, the temperature is the lowest; also known as a cold source, such as ambient air.
(4) When the heat source substance directly serves as a working medium to participate in the circulation flow, the heat source substance represents the corresponding heat source.
(5) The temperatures corresponding to the first high-temperature heat source, the second high-temperature heat source, the medium-temperature heat source and the low-temperature cold source are generally called as first high temperature, second high temperature, medium temperature and low temperature respectively; it is noted that the first high temperature and the second high temperature merely indicate a difference in grade, and are not arranged in terms of temperature.
The specific implementation mode is as follows:
the invention is described in detail below with reference to the drawings and examples; wherein each example operates between a first high temperature heat source, a second high temperature heat source, a medium temperature heat source, and a low temperature cold source.
Two examples of the second type of multidirectional thermodynamic cycle in the T-s diagram of fig. 1 are performed:
example (1), the working medium is sequentially processed by 8 processes, namely a constant temperature endothermic process 12, a reversible adiabatic pressure increasing process 23, a constant temperature exothermic process 34, a reversible adiabatic pressure decreasing process 45, a constant temperature exothermic process 56, a reversible adiabatic pressure increasing process 67, a constant temperature exothermic process 78 and a reversible adiabatic pressure decreasing process 81, to form a second type multidirectional thermodynamic cycle 123456781.
Example (2), the working medium is sequentially processed by 8 processes, namely a constant temperature endothermic process 12, an irreversible adiabatic pressure increasing process 23, a constant temperature exothermic process 34, an irreversible adiabatic pressure decreasing process 45, a constant temperature exothermic process 56, an irreversible adiabatic pressure increasing process 67, a constant temperature exothermic process 78 and an irreversible adiabatic pressure decreasing process 81, to form a second type multidirectional thermodynamic cycle 123456781.
In the two examples, the working medium performs 12 processes to obtain a medium-temperature heat source heat load, the working medium performs 56 processes to release the heat load to a low-temperature cold source, the working medium performs 34 processes to release the heat load to a first high-temperature heat source, and the working medium performs 78 processes to release the heat load to a second high-temperature heat source; when the circulation net work is equal to zero, the heat load provided by the medium-temperature heat source is equal to the sum of the heat loads released to the two high-temperature heat sources and the low-temperature cold source; when the circulation net work is larger than zero, the circulation net work is output outwards, and the heat load provided by the medium-temperature heat source is equal to the sum of the heat load released to the two high-temperature heat sources, the heat load released to the low-temperature cold source and the outwards output work; when the circulation net work is less than zero, the circulation net work is input externally, and the sum of the external input work and the heat load provided by the medium-temperature heat source is equal to the sum of the heat loads released to the two high-temperature heat sources and the low-temperature cold source.
Two examples of the second type of multidirectional thermodynamic cycle in the T-s diagram of fig. 2 are performed:
example (1) the working medium proceeds in sequence-constant pressure endothermic process 12, reversible adiabatic pressure rise process 23, constant pressure exothermic process 34, reversible adiabatic pressure drop process 45, constant pressure exothermic process 56, reversible adiabatic pressure rise process 67, constant pressure exothermic process 78, reversible adiabatic pressure drop process 81-8 processes in total, forming a second type of multidirectional thermodynamic cycle 123456781.
Example (2), the working medium is sequentially processed by 8 processes, namely a constant-pressure endothermic process 12, an irreversible adiabatic pressure-increasing process 23, a constant-pressure exothermic process 34, an irreversible adiabatic pressure-decreasing process 45, a constant-pressure exothermic process 56, an irreversible adiabatic pressure-increasing process 67, a constant-pressure exothermic process 78 and an irreversible adiabatic pressure-decreasing process 81, to form a second-type multidirectional thermodynamic cycle 123456781.
In the two examples, the working medium performs 12 processes to obtain a medium-temperature heat source heat load, the working medium performs 56 processes to release the heat load to a low-temperature cold source, the working medium performs 34 processes to release the heat load to a first high-temperature heat source, and the working medium performs 78 processes to release the heat load to a second high-temperature heat source; when the circulation net work is equal to zero, the heat load provided by the medium-temperature heat source is equal to the sum of the heat loads released to the two high-temperature heat sources and the low-temperature cold source; when the circulation net work is larger than zero, the circulation net work is output outwards, and the heat load provided by the medium-temperature heat source is equal to the sum of the heat load released to the two high-temperature heat sources, the heat load released to the low-temperature cold source and the outwards output work; when the circulation net work is less than zero, the circulation net work is input externally, and the sum of the external input work and the heat load provided by the medium-temperature heat source is equal to the sum of the heat loads released to the two high-temperature heat sources and the low-temperature cold source.
Two examples of the second type of multidirectional thermodynamic cycle in the T-s diagram of fig. 3 are performed:
example (1), the working medium is sequentially subjected to a constant-pressure (constant-temperature) endothermic process 12, a reversible adiabatic pressure-increasing process 23, a constant-pressure exothermic process 34, a reversible adiabatic pressure-decreasing process 45, a constant-pressure (constant-temperature) exothermic process 56, a reversible adiabatic pressure-increasing process 67, a constant-pressure (constant-temperature) exothermic process 78, a reversible adiabatic pressure-decreasing process 81, and 8 processes in total, to form a second-type multidirectional thermodynamic cycle 123456781.
Example (2), the working medium is sequentially subjected to 8 processes, namely a constant-pressure (constant-temperature) endothermic process 12, an irreversible adiabatic pressure-increasing process 23, a constant-pressure exothermic process 34, an irreversible adiabatic pressure-decreasing process 45, a constant-pressure (constant-temperature) exothermic process 56, an irreversible adiabatic pressure-increasing process 67, a constant-pressure (constant-temperature) exothermic process 78 and an irreversible adiabatic pressure-decreasing process 81, to form a second-type multidirectional thermodynamic cycle 123456781.
In the two examples, the working medium performs 12 processes to obtain a medium-temperature heat source heat load, the working medium performs 56 processes to release the heat load to a low-temperature cold source, the working medium performs 34 processes to release the heat load to a first high-temperature heat source, and the working medium performs 78 processes to release the heat load to a second high-temperature heat source; when the circulation net work is equal to zero, the heat load provided by the medium-temperature heat source is equal to the sum of the heat loads released to the two high-temperature heat sources and the low-temperature cold source; when the circulation net work is larger than zero, the circulation net work is output outwards, and the heat load provided by the medium-temperature heat source is equal to the sum of the heat load released to the two high-temperature heat sources, the heat load released to the low-temperature cold source and the outwards output work; when the circulation net work is less than zero, the circulation net work is input externally, and the sum of the external input work and the heat load provided by the medium-temperature heat source is equal to the sum of the heat loads released to the two high-temperature heat sources and the low-temperature cold source.
Two examples of the second type of multidirectional thermodynamic cycle in the T-s diagram of fig. 4 are performed:
in the example (1), the cold source medium sequentially carries out 7 processes, namely a reversible adiabatic pressure increasing process 12, a constant temperature heat releasing process 23, a reversible adiabatic pressure reducing process 34, a constant temperature heat absorbing process 45, a reversible adiabatic pressure increasing process 56, a constant temperature heat releasing process 67 and a reversible adiabatic pressure reducing process 78, so that a non-closed multidirectional second-class thermodynamic cycle 12345678 is formed.
In the example (2), the cold source medium is sequentially subjected to an irreversible adiabatic pressure increasing process 12, a constant temperature heat releasing process 23, an irreversible adiabatic pressure reducing process 34, a constant temperature heat absorbing process 45, an irreversible adiabatic pressure increasing process 56, a constant temperature heat releasing process 67 and an irreversible adiabatic pressure reducing process 78, which are 7 processes, so that a non-closed second-type multidirectional thermodynamic cycle 12345678 is formed.
In the two examples, the cold source medium obtains the heat load of the medium-temperature heat source in the 45 processes, the cold source medium completes the non-closed thermodynamic cycle 12345678 to release the heat load to the low-temperature cold source, the cold source medium releases the heat load to the first high-temperature heat source in the 67 processes, and the cold source medium releases the heat load to the second high-temperature heat source in the 23 processes; when the circulation net work is equal to zero, the heat load provided by the medium-temperature heat source is equal to the sum of the heat loads released to the cold source medium and the two high-temperature heat sources; when the circulation net work is larger than zero, the circulation net work is output outwards, and the heat load provided by the medium-temperature heat source is equal to the sum of the heat load released to the cold source medium, the heat load released to the two high-temperature heat sources and the outwards output work; when the circulation net work is less than zero, the circulation net work is input externally, and the sum of the external input work and the heat load provided by the medium-temperature heat source is equal to the sum of the heat loads released to the cold source medium and the two high-temperature heat sources.
Two examples of the second type of multidirectional thermodynamic cycle in the T-s diagram of fig. 5 are performed:
example (1), the medium-temperature heat source medium sequentially performs 7 processes, namely a reversible adiabatic boosting process 12, a constant-pressure heat release process 23, a reversible adiabatic decompression process 34, a constant-pressure heat release process 45, a reversible adiabatic boosting process 56, a constant-pressure heat release process 67 and a reversible adiabatic decompression process 78, to form an unclosed multidirectional second-type thermodynamic cycle 12345678.
Example (2), the medium temperature heat source medium sequentially performs 7 processes, namely an irreversible adiabatic boosting process 12, a constant pressure heat release process 23, an irreversible adiabatic decompression process 34, a constant pressure heat release process 45, an irreversible adiabatic boosting process 56, a constant pressure heat release process 67 and an irreversible adiabatic decompression process 78, to form an unclosed second-type multidirectional thermodynamic cycle 12345678.
In both examples, where 78 is reduced to pressure p2Above or below; the medium-temperature heat source medium completes non-closed thermodynamic cycle 12345678 to obtain a medium-temperature heat source heat load, releases the heat load to the low-temperature cold source in the medium-temperature heat source medium process 45, releases the heat load to the first high-temperature heat source in the medium-temperature heat source medium process 23, and releases the heat load to the second high-temperature heat source in the medium-temperature heat source medium process 67; when the work output by the equipment when the medium-temperature heat source medium is subjected to the processes 34 and 78 is equal to the work required by the equipment when the processes 12 and 56 are performed, the heat load provided by the medium-temperature heat source is equal to the sum of the heat loads released to the low-temperature cold source and the two high-temperature heat sources; when the work output by the equipment is greater than the work required by the equipment in the processes of 12 and 56 when the medium-temperature heat source medium is subjected to the processes of 34 and 78, the circulating net work is output outwards, and the heat load provided by the medium-temperature heat source is equal to the sum of the heat load provided by the low-temperature cold source, the heat load released by the two high-temperature heat sources and the externally output work; when the work output by the equipment is less than the work required by the equipment for performing the processes of 12 and 56 when the medium-temperature heat source medium performs the processes of 34 and 78, the circulating net work is input externally, and the sum of the external input work and the heat load provided by the medium-temperature heat source is equal to the sum of the heat loads released to the low-temperature cold source and the two high-temperature heat sources.
Two examples of the second type of multidirectional thermodynamic cycle in the T-s diagram of fig. 6 are performed:
example (1), the heated medium is subjected to a reversible adiabatic decompression process 12, a constant pressure endothermic process 23, a reversible adiabatic boosting process 34, a constant pressure exothermic process 45, a reversible adiabatic decompression process 56, a constant pressure exothermic process 67, a reversible adiabatic boosting process 78, which are 7 processes in sequence, to form an unclosed multidirectional thermodynamic cycle 12345678 of the second type.
Example (2), the heated medium is sequentially subjected to an irreversible adiabatic decompression process 12, a constant pressure endothermic process 23, an irreversible adiabatic pressure increase process 34, a constant pressure exothermic process 45, an irreversible adiabatic decompression process 56, a constant pressure exothermic process 67, and an irreversible adiabatic pressure increase process 78, which are 7 processes in total, to form an unclosed multidirectional thermodynamic cycle 12345678 of the second type.
In the two examples, the medium to be heated completes the non-closed thermodynamic cycle 12345678 to obtain the high-temperature heat load, the medium to be heated obtains the medium-temperature heat load in the process of 23, the medium to be heated releases the heat load to the low-temperature cold source in the process of 67, and the medium to be heated releases the heat load to the first high-temperature heat source in the process of 45; when the work output by the equipment when the heated medium is subjected to the processes 12 and 56 is equal to the work required by the equipment when the processes 34 and 78 are carried out, the heat load provided by the medium-temperature heat source is equal to the sum of the heat load obtained by the low-temperature cold source, the heat load obtained by the first high-temperature heat source and the heat load obtained by the heated medium; when the work output by the equipment is greater than the work required by the equipment for performing the processes 34 and 78 when the heated medium is subjected to the processes 12 and 56, the circulating net work is output to the outside, and the heat load provided by the medium-temperature heat source is equal to the sum of the heat load obtained by the low-temperature cold source, the heat load obtained by the first high-temperature heat source, the heat load obtained by the heated medium and the output work; when the work output by the equipment when the heated medium is subjected to the processes 12 and 56 is less than the work provided by the equipment required for the processes 34 and 78, the external input is used for circulating net work, and the sum of the external input work and the heat load provided by the medium-temperature heat source is equal to the sum of the heat load obtained by the low-temperature cold source, the heat load obtained by the first high-temperature heat source and the heat load obtained by the heated medium.
Two examples of the second type of multidirectional thermodynamic cycle in the T-s diagram of fig. 7 are performed:
example (1), the heated medium is subjected to a reversible adiabatic decompression process 12, a constant-pressure heat release process 23, a reversible adiabatic boosting process 34, a constant-pressure heat release process 45, a reversible adiabatic decompression process 56, a constant-pressure heat absorption process 67 and a reversible adiabatic boosting process 78 in sequence, which are 7 processes, to form an unclosed multidirectional thermodynamic cycle 12345678 of the second type.
Example (2), the heated medium is sequentially subjected to an irreversible adiabatic decompression process 12, a constant pressure heat release process 23, an irreversible adiabatic pressure increase process 34, a constant pressure heat release process 45, an irreversible adiabatic decompression process 56, a constant pressure heat absorption process 67 and an irreversible adiabatic pressure increase process 78, which are 7 processes in total, to form an unclosed multidirectional thermodynamic cycle 12345678 of the second type.
In the two examples, the medium to be heated completes the non-closed thermodynamic cycle 12345678 to obtain the high-temperature heat load, the medium to be heated obtains the medium-temperature heat load in the 67 process, the medium to be heated releases the heat load to the low-temperature cold source in the 23 process, and the medium to be heated releases the heat load to the second high-temperature heat source in the 45 process; when the work output by the equipment when the heated medium is subjected to the processes 12 and 56 is equal to the work required by the equipment when the processes 34 and 78 are carried out, the heat load provided by the medium-temperature heat source is equal to the sum of the heat load obtained by the low-temperature cold source, the heat load obtained by the second high-temperature heat source and the heat load obtained by the heated medium; when the work output by the equipment is greater than the work required by the equipment for performing the processes 34 and 78 when the heated medium is subjected to the processes 12 and 56, the circulating net work is output to the outside, and the heat load provided by the medium-temperature heat source is equal to the sum of the heat load obtained by the low-temperature cold source, the heat load obtained by the second high-temperature heat source, the heat load obtained by the heated medium and the output work; when the work output by the equipment when the heated medium is subjected to the processes 12 and 56 is less than the work provided by the equipment required for the processes 34 and 78, the external input is used for circulating net work, and the sum of the external input work and the heat load provided by the medium-temperature heat source is equal to the sum of the heat load obtained by the low-temperature cold source, the heat load obtained by the second high-temperature heat source and the heat load obtained by the heated medium.
The effect that the technology of the invention can realize, the second type of multidirectional thermodynamic cycle proposed by the invention has the following effects and advantages:
(1) creating a thermal energy (temperature difference) utilization basic theory.
(2) The temperature difference can be effectively utilized by coping with different high-temperature heat sources and various requirements.
(3) The method is simple, the flow is reasonable, the method is a common technology for realizing effective utilization of temperature difference, and the applicability is good.
(4) The heat energy (temperature difference) is driven to realize the temperature increase of the heat energy, or the heat energy and the temperature can be selected to provide power for the outside at the same time.
(5) The process is reasonable, and the full and efficient utilization of the temperature difference can be realized.
(6) When necessary, the temperature of the low-temperature heat energy is increased by means of external power, the mode is flexible, and the adaptability is good.
(7) The working medium has wide application range, can well adapt to energy supply requirements, and is flexibly matched with working parameters.
(8) The type of thermodynamic cycle for realizing temperature difference utilization is expanded, and efficient utilization of heat energy is better realized.
Claims (5)
1. The second kind of multidirectional thermodynamic cycle is a closed process 123456781 which is composed of eight processes, namely a working medium heat absorption process 12 from a medium-temperature heat source, a pressure increasing process 23 from the medium temperature, a heat release process 34 to a first high-temperature heat source, a pressure decreasing process 45 from the first high temperature, a heat release process 56 to a low-temperature heat source, a pressure increasing process 67 from the low temperature, a heat release process 78 to a second high-temperature heat source, and a pressure decreasing process 81 from the second high temperature, which are sequentially performed among a first high-temperature heat source, a second high-temperature heat source, a medium-temperature heat source and a low-temperature cold source.
2. The second kind of multidirectional thermodynamic cycle is a non-closed process 12345678 which works among a first high-temperature heat source, a second high-temperature heat source, a medium-temperature heat source and a low-temperature cold source, and consists of seven processes which are sequentially carried out, namely a pressure increasing process 12 of a cold source medium from low temperature, a heat releasing process 23 to the second high-temperature heat source, a pressure decreasing process 34 from second high temperature, a heat absorbing process 45 from the medium-temperature heat source, a pressure increasing process 56 from medium temperature, a heat releasing process 67 to the first high-temperature heat source, and a pressure decreasing process 78 from first high temperature.
3. The second kind of multidirectional thermodynamic cycle is a non-closed process 12345678 which works among a first high-temperature heat source, a second high-temperature heat source, a medium-temperature heat source and a low-temperature cold source, and consists of seven processes which are sequentially carried out, namely a pressure increasing process 12 of a medium-temperature heat source medium from the medium temperature, a heat releasing process 23 of the medium-temperature heat source, a pressure reducing process 34 from the first high temperature, a heat releasing process 45 of the low-temperature cold source, a pressure increasing process 56 from the low temperature, a heat releasing process 67 of the second high-temperature heat source and a pressure reducing process 78 from the second high temperature.
4. The second kind of multidirectional thermodynamic cycle is a non-closed process 12345678 which works among a first high-temperature heat source, a second high-temperature heat source, a medium-temperature heat source and a low-temperature cold source and consists of seven processes which are sequentially carried out, namely a pressure reduction process 12 of a heated medium from the second high temperature, a heat absorption process 23 of the medium-temperature heat source, a pressure increase process 34 of the medium-temperature heat source, a heat release process 45 of the first high-temperature heat source, a pressure reduction process 56 of the first high temperature, a heat release process 67 of the low-temperature cold source and a pressure increase process 78 of the low temperature.
5. The second kind of multidirectional thermodynamic cycle is a non-closed process 12345678 which works among a first high-temperature heat source, a second high-temperature heat source, a medium-temperature heat source and a low-temperature cold source, and consists of seven processes which are sequentially carried out, namely a depressurization process 12 of a heated medium from a first high temperature, a heat release process 23 of the heated medium to the low-temperature cold source, a pressure boosting process 34 from a low temperature, a heat release process 45 of the heated medium to the second high-temperature heat source, a depressurization process 56 from a second high temperature, a heat absorption process 67 of the medium-temperature heat source and a pressure boosting process 78 from a medium temperature.
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Citations (5)
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| US4249378A (en) * | 1979-08-31 | 1981-02-10 | Benson Glendon M | Thermally actuated heat pump |
| CN105841382A (en) * | 2015-04-13 | 2016-08-10 | 李华玉 | Open type both-way thermodynamic cycle and first-kind heat drive compression type heat pump |
| CN105910332A (en) * | 2015-04-13 | 2016-08-31 | 李华玉 | Open type bidirectional thermal cycle and first kind thermal driving compression heat pump |
| CN106440510A (en) * | 2016-02-25 | 2017-02-22 | 李华玉 | Second-class thermally driven compression heat pump |
| US20180353873A1 (en) * | 2015-11-24 | 2018-12-13 | Lev GOLDSHTEIN | Method and system of combined power plant for waste heat conversion to electrical energy, heating and cooling |
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2019
- 2019-08-23 CN CN201910836481.2A patent/CN110631280A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4249378A (en) * | 1979-08-31 | 1981-02-10 | Benson Glendon M | Thermally actuated heat pump |
| CN105841382A (en) * | 2015-04-13 | 2016-08-10 | 李华玉 | Open type both-way thermodynamic cycle and first-kind heat drive compression type heat pump |
| CN105910332A (en) * | 2015-04-13 | 2016-08-31 | 李华玉 | Open type bidirectional thermal cycle and first kind thermal driving compression heat pump |
| US20180353873A1 (en) * | 2015-11-24 | 2018-12-13 | Lev GOLDSHTEIN | Method and system of combined power plant for waste heat conversion to electrical energy, heating and cooling |
| CN106440510A (en) * | 2016-02-25 | 2017-02-22 | 李华玉 | Second-class thermally driven compression heat pump |
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