US20220282890A1 - Reversed single-working-medium vapor combined cycle - Google Patents

Reversed single-working-medium vapor combined cycle Download PDF

Info

Publication number
US20220282890A1
US20220282890A1 US17/619,246 US202017619246A US2022282890A1 US 20220282890 A1 US20220282890 A1 US 20220282890A1 US 202017619246 A US202017619246 A US 202017619246A US 2022282890 A1 US2022282890 A1 US 2022282890A1
Authority
US
United States
Prior art keywords
working medium
state
heat
working
medium
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
US17/619,246
Other languages
English (en)
Inventor
Huayu Li
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of US20220282890A1 publication Critical patent/US20220282890A1/en
Pending legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K11/00—Plants characterised by the engines being structurally combined with boilers or condensers
    • 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
    • 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
    • F01K11/00—Plants characterised by the engines being structurally combined with boilers or condensers
    • F01K11/02—Plants characterised by the engines being structurally combined with boilers or condensers the engines being turbines
    • 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

Definitions

  • the present invention belongs to the flied of thermodynamics, refrigeration and heat pump.
  • Cold demand, heat demand and power demand are common in human life and production.
  • the conversion of mechanical energy into thermal energy is an important way to realize refrigeration and heating.
  • the temperature of the refrigerated medium changes during the refrigeration process, and the temperature of the heated medium also changes during the heating process.
  • the heated medium often has the dual characteristics of variable temperature and high temperature at the same time, which makes the performance unsatisfactory when only using one single thermodynamic cycle to realize refrigeration or heating.
  • the problems include the unreasonable coefficient of performance, low heating parameters, high pressure ratio and high operating pressure.
  • thermodynamic cycles i.e., refrigeration/heat pump cycles
  • refversed thermodynamic cycles are the theoretical basis of mechanical-energy-driven refrigeration or heating devices, and they are also the core of the corresponding energy utilization systems.
  • the present invention proposes a reversed single-working-medium vapor combined cycle.
  • the reversed single-working-medium vapor combined cycle is mainly provided in the present invention, and the specific contents of the present invention are as follows:
  • a reversed single-working-medium vapor combined cycle method consisting of eight processes which are conducted with M 1 kg of working medium and M 2 kg of working medium separately or jointly: performing a heat-absorption and vaporization process to set a state (1) to (2) of the M 1 kg of working medium, performing a heat-absorption process to set a state (2) to (3) of the (M 1 +M 2 ) kg of working medium, performing a pressurization process to set the state (3) to (4) of the (M 1 +M 2 ) kg of working medium, performing a heat-releasing process to set the state (4) to (5) of the (M 1 +M 2 ) kg of working medium, performing a depressurization process to set a state (5) to (2) of the M 2 kg of working medium, performing a heat-releasing and condensation process to set a state (6) to (7) of the M 1 kg of working medium, performing a depressurization process to set the state (7) to (1) of the M 1 kg of working medium.
  • a reversed single-working-medium vapor combined cycle method consisting of eleven processes which are conducted with M 1 kg of working medium and M 2 kg of working medium separately or jointly: performing a heat-absorption and vaporization process to set a state (1) to (2) of the M 1 kg of working medium, performing a heat-absorption process to set the state (2) to (3) of the (M 1 +M 2 ) kg of working medium, performing a heat-absorption process to set the state (3) to (4) of the (M 1 +M 2 ⁇ X) kg of working medium, performing a pressurization process to set a state (4) to (5) of the (M 1 +M 2 ⁇ X) kg of working medium, performing a heat-releasing process to set the state (5) to (6) of the (M 1 +M 2 ⁇ X) kg of working medium, performing a pressurization process to set a state (3) to (6) of the X kg of working medium, performing a heat-releasing process to set a state (6) to (7) of the (M 1 +M 2 )
  • a reversed single-working-medium vapor combined cycle method consisting of nine processes which are conducted with M 1 kg of working medium and M 2 kg of working medium separately or jointly: performing a heat-absorption and vaporization process to set a state (1) to (2) of the M 1 kg of working medium, performing a pressurization process to set a state (2) to (3) of the M 1 kg of working medium, performing a heat-absorption process to set a state (3) to (4) of the (M 1 +M 2 ) kg of working medium, performing a pressurization process to set a state (4) to (5) of the (M 1 +M 2 ) kg of working medium, performing a heat-releasing process to set a state (5) to (6) of the (M 1 +M 2 ) kg of working medium, performing a depressurization process to set the state (6) to (3) of the M 2 kg of working medium.
  • a reversed single-working-medium vapor combined cycle method consisting of twelve processes which are conducted with M 1 kg of working medium and M 2 kg of working medium separately or jointly: performing a heat-absorption and vaporization process to set a state (1) to (2) of the M 1 kg of working medium, performing a pressurization process to set a state (2) to (3) of the M 1 kg of working medium, performing a heat-absorption process to set a state (3) to (4) of the (M 1 +M 2 ) kg of working medium, performing a heat-absorption process to set a state (4) to (5) of the (M 1 +M 2 ⁇ X) kg of working medium, performing a pressurization process to set the state (5) to (6) of the (M 1 +M 2 ⁇ X) kg of working medium, performing a heat-releasing process to set the state (6) to (7) of the (M 1 +M 2 ⁇ X) kg of working medium, performing a pressurization process to set the state (4) to (7) of the X kg of working medium,
  • a reversed single-working-medium vapor combined cycle method consisting of ten processes which are conducted with M 1 kg of working medium and M 2 kg of working medium separately or jointly: performing a heat-absorption and vaporization process to set a state (1) to (2) of the M 1 kg of working medium, performing a heat-absorption process to set a state (2) to (3) of the (M 1 +M 2 ) kg of working medium, performing a pressurization process to set the state (3) to (4) of the (M 1 +M 2 ) kg of working medium, performing a heat-releasing process to set the state (4) to (5) of the (M 1 +M 2 ) kg of working medium, performing a depressurization process to set a state (5) to (a) of the M 2 kg of working medium, performing a heat-absorption process to set the state (a) to (b) of the M 2 kg of working medium, performing a depressurization process to set the state (b) to (2) of the M 2 kg of working medium, performing a pressurization process
  • a reversed single-working-medium vapor combined cycle method consists of thirteen processes which are conducted with M 1 kg of working medium and M 2 kg of working medium separately or jointly: performing a heat-absorption and vaporization process to set a state (1) to (2) of the M 1 kg of working medium, performing a heat-absorption process to set a state (2) to (3) of the (M 1 +M 2 ) kg of working medium, performing a heat-absorption process to set a state (3) to (4) of the (M 1 +M 2 ⁇ X) kg of working medium, performing a pressurization process to set the state (4) to (5) of the (M 1 +M 2 ⁇ X) kg of working medium, performing a heat-releasing process to set the state (5) to (6) of the (M 1 +M 2 ⁇ X) kg of working medium, performing a pressurization process to set a state (3) to (6) of the X kg of working medium, performing a heat-releasing process to set a state (6) to (7) of the (M 1 +M 2
  • a reversed single-working-medium vapor combined cycle method consists of eleven processes which are conducted with M 1 kg of working medium and M 2 kg of working medium separately or jointly: performing a heat-absorption and vaporization process to set a state (1) to (2) of the M 1 kg of working medium, performing a pressurization process to set the state (2) to (3) of the M 1 kg of working medium, performing a heat-absorption process to set a state (3) to (4) of the (M 1 +M 2 ) kg of working medium, performing a pressurization process to set the state (4) to (5) of the (M 1 +M 2 ) kg of working medium, performing a heat-releasing process to set the state (5) to (6) of the (M 1 +M 2 ) kg of working medium, performing a depressurization process to set a state (6) to (a) of the M 2 kg of working medium, performing a heat-absorption process to set the state (a) to (b) of the M 2 kg of working medium, performing a depressurization process to
  • a reversed single-working-medium vapor combined cycle method consists of fourteen processes which are conducted with M 1 kg of working medium and M 2 kg of working medium separately or jointly: performing a heat-absorption and vaporization process to set a state (1) to (2) of the M 1 kg of working medium, performing a pressurization process to set the state (2) to (3) of the M 1 kg of working medium, performing a heat-absorption process to set a state (3) to (4) of the (M 1 +M 2 ) kg of working medium, performing a heat-releasing process to set a state (4) to (5) of the (M 1 +M 2 ⁇ X) kg of working medium, performing a pressurization process to set the state (5) to (6) of the (M 1 +M 2 ⁇ X) kg of working medium, performing a heat-releasing process to set the state (6) to (7) of the (M 1 +M 2 ⁇ X) kg of working medium, performing a pressurization process to set a state (4) to (7) of the X kg of working medium, performing
  • a reversed single-working-medium vapor combined cycle method consists of twelve processes which are conducted with M 1 kg of working medium and M 2 kg of working medium separately or jointly: performing a heat-absorption and vaporization process to set a state (1) to (2) of the M 1 kg of working medium, performing a heat-absorption process to set a state (2) to (3) of the (M 1 +M 2 ) kg of working medium, performing a pressurization process to set the state (3) to (4) of the (M 1 +M 2 ) kg of working medium, performing a heat-releasing process to set the state (4) to (5) of the (M 1 +M 2 ) kg of working medium, performing a depressurization process to set a state (5) to (t) of the (M 2 ⁇ M) kg of working medium, performing a depressurization process to set a state (t) to (2) of the M 2 kg of working medium, performing a pressurization process to set a state (5) to (6) of the (M 1 +M) kg of working medium, performing
  • a reversed single-working-medium vapor combined cycle method consists of fifteen processes which are conducted with M 1 kg of working medium and M 2 kg of working medium separately or jointly: performing a heat-absorption and vaporization process to set a state (1) to (2) of the M 1 kg of working medium, performing a heat-absorption process to set a state (2) to (3) of the (M 1 +M 2 ) kg of working medium, performing a heat-absorption process to set a state (3) to (4) of the (M 1 +M 2 ⁇ X) kg of working medium, performing a pressurization process to set the state (4) to (5) of the (M 1 +M 2 ⁇ X) kg of working medium, performing a pressurization process to set the state (5) to (6) of the (M 1 +M 2 ⁇ X) kg of working medium, performing a pressurization process to set a state (3) to (6) of the X kg of working medium, performing a heat-releasing process to set a state (6) to (7) of the (M 1 +M 2
  • a reversed single-working-medium vapor combined cycle method consists of thirteen processes which are conducted with M 1 kg of working medium and M 2 kg of working medium separately or jointly: performing a heat-absorption and vaporization process to set a state (1) to (2) of the M 1 kg of working medium, performing a pressurization process to set the state (2) to (3) of the M 1 kg of working medium, performing a heat-absorption process to set a state (3) to (4) of the (M 1 +M 2 ) kg of working medium, performing a pressurization process to set the state (4) to (5) of the (M 1 +M 2 ) kg of working medium, performing a heat-releasing process to set the state (5) to (6) of the (M 1 +M 2 ) kg of working medium, performing a depressurization process to set a state (6) to (t) of the (M 2 ⁇ M) kg of working medium, performing a depressurization process to set a state (t) to (3) of the M 2 kg of working medium, performing a pressurization
  • a reversed single-working-medium vapor combined cycle method consists of sixteen processes which are conducted with M 1 kg of working medium and M 2 kg of working medium separately or jointly: performing a heat-absorption and vaporization process to set a state (1) to (2) of the M 1 kg of working medium, performing a pressurization process to set the state (2) to (3) of the M 1 kg of working medium, performing a heat-absorption process to set a state (3) to (4) of the (M 1 +M 2 ) kg of working medium, performing a heat-absorption process to set a state (4) to (5) of the (M 1 +M 2 ⁇ X) kg of working medium, performing a pressurization process to set the state (5) to (6) of the (M 1 +M 2 ⁇ X) kg of working medium, performing a heat-releasing process to set the state (6) to (7) of the (M 1 +M 2 ⁇ X) kg of working medium, performing a pressurization process to set a state (4) to (7) of the X kg of working medium,
  • FIG. 1 is a type 1 example general flow chart of a reversed single-working-medium vapor combined cycle provided in the present invention.
  • FIG. 2 is a type 2 example general flow chart of a reversed single-working-medium vapor combined cycle provided in the present invention.
  • FIG. 3 is a type 3 example general flow chart of a reversed single-working-medium vapor combined cycle provided in the present invention.
  • FIG. 4 is a type 4 example general flow chart of a reversed single-working-medium vapor combined cycle provided in the present invention.
  • FIG. 5 is a type 5 example general flow chart of a reversed single-working-medium vapor combined cycle provided in the present invention.
  • FIG. 6 is a type 6 example general flow chart of a reversed single-working-medium vapor combined cycle provided in the present invention.
  • FIG. 7 is a type 7 example general flow chart of a reversed single-working-medium vapor combined cycle provided in the present invention.
  • FIG. 8 is a type 8 example general flow chart of a reversed single-working-medium vapor combined cycle provided in the present invention.
  • FIG. 9 is a type 9 example general flow chart of a single-working-medium combined cycle provided in the present invention.
  • FIG. 10 is a type 10 example general flow chart of a reversed single-working-medium vapor combined cycle provided in the present invention.
  • FIG. 11 is a type 11 example general flow chart of a reversed single-working-medium vapor combined cycle provided in the present invention.
  • FIG. 12 is a type 12 example general flow chart of a reversed single-working-medium vapor combined cycle provided in the present invention.
  • the T-s diagram of the reversed single-working-medium vapor combined cycle in FIG. 1 works as follows:
  • the working medium conducts eight processes: a heat-absorption vaporization process 1-2 of the M 1 kg of working medium, a heat-absorption and heating up process 2-3 of the (M 1 +M 2 ) kg of working medium, a pressurization process 3-4 of the (M 1 +M 2 ) kg of working medium, a heat-releasing process 4-5 of the (M 1 +M 2 ) kg of working medium, a depressurization process 5-2 of the M 2 kg of working medium, a pressurization process 5-6 of the M 1 kg of working medium, a heat-releasing and condensation process 6-7 of the M 1 kg of condensation, a depressurization process 7-1 of the M 1 kg of condensation.
  • the M 1 kg of working medium in the process 1-2 obtains the low-temperature heat load which is provided by the refrigerated medium or a low-temperature heat source.
  • the heat absorbed in the process 2-3 of the (M 1 +M 2 ) kg of working medium comes from the low-temperature heat load, or partly comes from the low-temperature heat load and partly comes from regeneration, or totally comes from regeneration.
  • the process 3-4 of the (M 1 +M 2 ) kg of working medium and the process 5-6 of the M 1 kg of working medium are generally achieved by a compressor and requires mechanical work.
  • the process 5-2 of the M 2 kg of working medium is achieved by an expander and provides mechanical work.
  • the process 7-1 of the M 1 kg of working medium can be achieved by a turbine or a throttle valve.
  • the total expansion work output is less than the total pressurization work input, and the difference (the cycle's net work) is inputted from the outside.
  • the reversed single-working-medium vapor combined cycle is completed.
  • the working medium conducts eleven processes: a heat-absorption vaporization process 1-2 of the M 1 kg of working medium, a heat-absorption process 2-3 of the (M 1 +M 2 ) kg of working medium, a heat-absorption process 3-4 of the (M 1 +M 2 ⁇ X) kg of working medium, a pressurization and heating up process 4-5 of the (M 1 +M 2 ⁇ X) kg of working medium, a heat-releasing process 5-6 of the (M 1 +M 2 ⁇ X) kg of working medium, a pressurization and heating up process 3-6 of the X kg of working medium, a heat-releasing process 6-7 of the (M 1 +M 2 ) kg of working medium, a depressurization process 7-2 of the M 2 kg of working medium, a pressurization process 7-8 of the M 1 kg of working medium, a heat-releasing and condensation process 8-9 of the M 1 kg of condensation, a depressurization process 8-1 of the M 1 kg
  • the M 1 kg of working medium in the process 1-2 obtains the low-temperature heat load which is provided by the refrigerated medium or the low-temperature heat source.
  • the heat absorbed in the process 2-3 of the (M 1 +M 2 ) kg of working medium comes from the low-temperature heat load, or partly comes from the low-temperature heat load and partly comes from regeneration, or totally comes from regeneration.
  • the heat absorbed in the process 3-4 of the (M 1 +M 2 ⁇ X) kg of working medium comes from the low-temperature heat load, or partly comes from the low-temperature heat load and partly comes from regeneration, or totally comes from regeneration.
  • the process 4-5 of the (M 1 +M 2 ⁇ X) kg of working medium, the process 3-6 of the X kg of working medium and the process 7-8 of the M 1 kg of working medium are generally achieved by compressors and require mechanical work.
  • the process 7-2 of the M 2 kg of working medium is achieved by an expander and provides mechanical work.
  • the process 9-1 of the M 1 kg of working medium is achieved by a turbine or a throttle valve.
  • the total expansion work output is less than the total pressurization work input, and the difference (the cycle's net work) is inputted from the outside.
  • the reversed single-working-medium vapor combined cycle is completed.
  • the working medium conducts nine processes: a heat-absorption vaporization process 1-2 of the M 1 kg of working medium, a pressurization and heating up process 2-3 of the M 1 kg of working medium, a heat-absorption process 3-4 of the (M 1 +M 2 ) kg of working medium, a pressurization process 4-5 of the (M 1 +M 2 ) kg of working medium, a heat-releasing process 5-6 of the (M 1 +M 2 ) kg of working medium, a depressurization process 6-3 of the M 2 kg of working medium, a pressurization process 6-7 of the M 1 kg of working medium, a heat-releasing and condensation process 7-8 of the M 1 kg of condensation, a depressurization process 8-1 of the M 1 kg of condensation.
  • the M 1 kg of working medium in the process 1-2 obtains the low-temperature heat load which is provided by the refrigerated medium or the low-temperature heat source.
  • the heat absorbed in the process 3-4 of the (M 1 +M 2 ) kg of working medium comes from the low-temperature heat load, or partly comes from the low-temperature heat load and partly comes from regeneration, or totally comes from regeneration.
  • the process 2-3 and the process 6-7 of the M 1 kg of working medium and the process 4-5 of the (M 1 +M 2 ) kg of working medium are generally achieved by compressors and require mechanical work.
  • the process 6-3 of the M 2 kg of working medium is achieved by an expander and provides mechanical work.
  • the process 8-1 of the M 1 kg of working medium is achieved by a turbine or a throttle valve.
  • the total expansion work output is less than the total pressurization work input, and the difference (the cycle's net work) is inputted from the outside.
  • the reversed single-working-medium vapor combined cycle is completed.
  • the working medium conducts twelve processes: a heat-absorption vaporization process 1-2 of the M 1 kg of working medium, a pressurization and heating up process 2-3 of the M 1 kg of working medium, a heat-absorption process 3-4 of the (M 1 +M 2 ) kg of working medium, a heat-absorption process 4-5 of the (M 1 +M 2 ⁇ X) kg of working medium, a pressurization process 5-6 of the (M 1 +M 2 ⁇ X) kg of working medium, a heat-releasing process 6-7 of the (M 1 +M 2 ⁇ X) kg of working medium, a heat-absorption process 4-7 of the X kg of working medium, a heat-releasing process 7-8 of the (M 1 +M 2 ) kg of working medium, a depressurization process 8-3 of the M 2 kg of working medium, a pressurization process 8-9 of the M 1 kg of condensation, a heat-releasing and condensation process 9-c of the M 1 kg of working medium, a depressurization process
  • the M 1 kg of working medium in the process 1-2 obtains the low-temperature heat load which is provided by the refrigerated medium or the low-temperature heat source.
  • the heat absorbed in the process 3-4 of the (M 1 +M 2 ) kg of working medium comes from the low-temperature heat load, or partly comes from the low-temperature heat load and partly comes from regeneration.
  • the heat demand of the (M 1 +M 2 ⁇ X) kg of working medium in process 4-5 comes from the low-temperature heat load, or partly comes from the low-temperature heat load and partly comes from regeneration, or totally comes from regeneration.
  • the process 2-3 and the process 8-9 of the M 1 kg of working medium, the process 5-6 of the (M 1 +M 2 ⁇ X) kg of working medium and the process 4-7 of the X kg of working medium are generally achieved by compressors and require mechanical work.
  • the process 8-3 of the M 2 kg of working medium is achieved by an expander and provides mechanical work.
  • the process c-1 of the M 1 kg of working medium is achieved by a turbine or a throttle valve.
  • the total expansion work output is less than the total pressurization work input, and the difference (the cycle's net work) is inputted from the outside.
  • the reversed single-working-medium vapor combined cycle is completed.
  • the working medium conducts ten processes: a heat-absorption vaporization process 1-2 of the M 1 kg of working medium, a heat-absorption and heating up process 2-3 of the (M 1 +M 2 ) kg of working medium, a pressurization process 3-4 of the (M 1 +M 2 ) kg of working medium, a pressurization process 4-5 of the (M 1 +M 2 ) kg of working medium, a depressurization process 5-a of the M 2 kg of working medium, a heat-absorption process a-b of the M 2 kg of working medium, a pressurization process b-2 of the M 2 kg of working medium, a pressurization process 5-6 of the M 1 kg of working medium, a heat-releasing and condensation process 6-7 of the M 1 kg of condensation, a depressurization process 7-1 of the M 1 kg of condensation.
  • the M 1 kg of working medium in the process 1-2 obtains the low-temperature heat load which is provided by the refrigerated medium or the low-temperature heat source.
  • the heat absorbed in the process 2-3 of the (M 1 +M 2 ) kg of working medium comes from the low-temperature heat load, or partly comes from the low-temperature heat load and partly comes from regeneration, or totally comes from regeneration.
  • the heat demand of the M 2 kg of working medium in process a-b comes from regeneration or comes from external heat source.
  • the process 3-4 of the (M 1 +M 2 ) kg of working medium and the process 5-6 of the M 1 kg of working medium are generally achieved by compressors and require mechanical work.
  • the process 5-a and the process b-2 of the M 2 kg of working medium are achieved by an expander and provides mechanical work.
  • the process 7-1 of the M 1 kg of working medium is achieved by a turbine or a throttle valve.
  • the total expansion work output is less than the total pressurization work input, and the difference (the cycle's net work) is inputted from the outside.
  • the reversed single-working-medium vapor combined cycle is completed.
  • the working medium conducts thirteen processes: a heat-absorption vaporization process 1-2 of the M 1 kg of working medium,
  • a heat-absorption process 2-3 of the (M 1 +M 2 ) kg of working medium a heat-absorption process 3-4 of the (M 1 +M 2 ⁇ X) kg of working medium, a pressurization and heating up process 4-5 of the (M 1 +M 2 ⁇ X) kg of working medium, a heat-releasing process 5-6 of the (M 1 +M 2 ⁇ X) kg of working medium, a pressurization process 3-6 of the X kg of working medium, a heat-releasing process 6-7 of the (M 1 +M 2 ) kg of working medium, a depressurization process 7-a of the M 2 kg of working medium, a heat-absorption process a-b of the M 2 kg of working medium, a depressurization process b-2 of the M 2 kg of working medium, a pressurization process 7-8 of the M 1 kg of working medium, a heat-releasing and condensation process 8-9 of the M 1 kg of condensation, a depressurization process 9-1 of the M 1 kg of condensation.
  • the M 1 kg of working medium in the process 1-2 obtains the low-temperature heat load which is provided by the refrigerated medium or the low-temperature heat source.
  • the heat absorbed in the process 2-3 of the (M 1 +M 2 ) kg of working medium comes from the low-temperature heat load, or partly comes from the low-temperature heat load and partly comes from regeneration, or totally comes from regeneration.
  • the heat absorbed in the process 3-4 of the (M 1 +M 2 ⁇ X) kg of working medium comes from the low-temperature heat load, or partly comes from the low-temperature heat load and partly comes from regeneration, or totally comes from regeneration.
  • the heat demand of the M 2 kg of working medium in process a-b comes from regeneration or comes from external heat source.
  • the process 4-5 of the (M 1 +M 2 ⁇ X) kg of working medium, the process 3-6 of the X kg of working medium and the process 7-8 of the M 1 kg of working medium are generally achieved by compressors and require mechanical work.
  • the process 7-a and the process b-2 of the M 2 kg of working medium is achieved by an expander and provides mechanical work.
  • the process 9-1 of the M 1 kg of working medium is achieved by a turbine or a throttle valve.
  • the total expansion work output is less than the total pressurization work input, and the difference (the cycle's net work) is inputted from the outside.
  • the reversed single-working-medium vapor combined cycle is completed.
  • the T-s diagram of the reversed single-working-medium vapor combined cycle in FIG. 7 works as follows:
  • the working medium conducts eleven processes: a heat-absorption vaporization process 1-2 of the M 1 kg of working medium, a pressurization and heating up process 2-3 of the M 1 kg of working medium, a heat-absorption process 3-4 of the (M 1 +M 2 ) kg of working medium, a pressurization process 4-5 of the (M 1 +M 2 ) kg of working medium, a heat-releasing process 5-6 of the (M 1 +M 2 ) kg of working medium, a depressurization process 6-a of the M 2 kg of working medium, a heat-absorption process a-b of the M 2 kg of working medium, a depressurization process b-3 of the M 2 kg of working medium, a pressurization process 6-7 of the M 1 kg of working medium, a heat-releasing and condensation process 7-8 of the M 1 kg of condensation, a depressurization process 8-1 of the M 1 kg of condensation.
  • the M 1 kg of working medium in the process 1-2 obtains the low-temperature heat load which is provided by the refrigerated medium or the low-temperature heat source.
  • the heat absorbed in the process 3-4 of the (M 1 +M 2 ) kg of working medium comes from the low-temperature heat load, or partly comes from the low-temperature heat load and partly comes from regeneration, or totally comes from regeneration.
  • the heat absorbed in the process a-b of the M 2 kg of working medium comes from regeneration, or the external heat sources.
  • the process 2-3 and process 6-7 of the M 1 kg of working medium and the process 4-5 of the (M 1 +M 2 ) kg of working medium are generally completed by the compressor and requires mechanical energy.
  • the process 6-a and the process b-3 of the M 2 kg of working medium is achieved by an expander and provides mechanical work.
  • the process 8-1 of the M 1 kg of working medium is achieved by a turbine or a throttle valve.
  • the total expansion work output is less than the total pressurization work input, and the difference (the cycle's net work) is inputted from the outside.
  • the reversed single-working-medium vapor combined cycle is completed.
  • the T-s diagram of the reversed single-working-medium vapor combined cycle in FIG. 8 works as follows:
  • the working medium conducts fourteen processes: a heat-absorption vaporization process 1-2 of the M 1 kg of working medium, a pressurization and heating up process 2-3 of the M 1 kg of working medium, a heat-absorption process 3-4 of the (M 1 +M 2 ) kg of working medium, a heat-absorption process 4-5 of the (M 1 +M 2 ⁇ X) kg of working medium, a pressurization process 5-6 of the (M 1 +M 2 ⁇ X) kg of working medium, a heat-releasing process 6-7 of the (M 1 +M 2 ⁇ X) kg of working, a pressurization and heating up process 4-7 of the X kg of working medium, a heat-releasing process 7-8 of the (M 1 +M 2 ) kg of working medium, a depressurization process 8-a of the M 2 kg of working medium, a heat-absorption process a-b of the M 2 kg of working medium, a depressurization process b-3 of the M 2 kg of working medium, a
  • the M 1 kg of working medium in the process 1-2 obtains the low-temperature heat load which is provided by the refrigerated medium or the low-temperature heat source.
  • the heat absorbed in the process 3-4 of the (M 1 +M 2 ) kg of working medium comes from the low-temperature heat load, or partly comes from the low-temperature heat load and partly comes from regeneration, or totally comes from regeneration.
  • the heat absorbed in the process 4-5 of the (M 1 +M 2 ⁇ X) kg of working medium comes from the low-temperature heat load, or partly comes from the low-temperature heat load and partly comes from regeneration, or totally comes from regeneration.
  • the heat absorbed in the process a-b of the M 2 kg of working medium comes from regeneration, or the external heat sources.
  • the process 2-3 and the process 8-9 of the M 1 kg of working medium, the process 5-6 of the (M 1 +M 2 ⁇ X) kg of working medium and the process 4-7 of the X kg of working medium are generally achieved by compressors and require mechanical work.
  • the process 8-a and process b-3 of the M 2 kg of working medium is achieved by an expander and provides mechanical work.
  • the process c-1 of the M 1 kg of working medium is achieved by a turbine or a throttle valve.
  • the total expansion work output is less than the total pressurization work input, and the difference (the cycle's net work) is inputted from the outside.
  • the reversed single-working-medium vapor combined cycle is completed.
  • the working medium conducts twelve processes: a heat-absorption vaporization process 1-2 of the M 1 kg of working medium, a heat-absorption process 2-3 of the (M 1 +M 2 ) kg of working medium, a heat-releasing process 4-5 of the (M 1 +M 2 ) kg of working medium, a depressurization process 5-t of the (M 2 ⁇ M) kg of working medium, a depressurization process t-2 of the M 2 kg of working medium, a pressurization process 5-6 of the (M 1 +M 2 ) kg of working medium, a heat-releasing and condensation process 6-r of the (M 1 +M) kg of condensation, a pressurization process r-s of the M kg of working medium, a heat-releasing and condensation process s-t of the M 1 kg of working medium, a heat-releasing process r-7 of the M 1 kg of condensation, a depressurization process 7-1 of the M 1 kg of condensation.
  • the M 1 kg of working medium in the process 1-2 obtains the low-temperature heat load which is provided by the refrigerated medium or the low-temperature heat source.
  • the heat absorbed in the process 2-3 of the (M 1 +M 2 ) kg of working medium comes from the low-temperature heat load, or partly comes from the low-temperature heat load and partly comes from regeneration, or totally comes from regeneration.
  • the heat absorbed in the process s-t of the M kg of working medium comes from regeneration, or the external heat sources.
  • the process 3-4 of the (M 1 +M 2 ) kg of working medium and the process 5-6 of the (M 1 +M) kg of working medium are generally achieved by compressors and require mechanical work.
  • the depressurization process 5-t of the (M 2 ⁇ M) kg of working medium and the process t-2 of the M 2 kg of working medium is achieved by an expander and provides mechanical work.
  • the process r-s of the M kg of working medium and the process 7-1 of the M 1 kg of working medium are achieved by a turbine or a throttle valve.
  • the total expansion work output is less than the total pressurization work input, and the difference (the cycle's net work) is inputted from the outside.
  • the reversed single-working-medium vapor combined cycle is completed.
  • the working medium conducts fifteen processes: a heat-absorption vaporization process 1-2 of the M 1 kg of working medium, a heat-absorption process 2-3 of the (M 1 +M 2 ) kg of working medium, a heat-absorption process 3-4 of the (M 1 +M 2 ⁇ X) kg of working medium, a pressurization process 4-5 of the (M 1 +M 2 ⁇ X) kg of working medium, a heat-releasing process 5-6 of the (M 1 +M 2 ⁇ X) kg of working medium, a heat-releasing process 6-7 of the M 2 kg of working medium, a depressurization process 7-t of the (M 2 ⁇ M) kg of working medium, a depressurization process t-2 of the M 2 kg of working medium, a pressurization process 7-8 of the (M 1 +M 2 ) kg of working medium, a heat-releasing and condensation process 8-r of the (M 1 +M) kg of condensation, a depressurization process r-s of the M kg of working
  • the M 1 kg of working medium in the process 1-2 obtains the low-temperature heat load which is provided by the refrigerated medium or the low-temperature heat source.
  • the heat absorbed in the process 2-3 of the (M 1 +M 2 ) kg of working medium comes from the low-temperature heat load, or partly comes from the low-temperature heat load and partly comes from regeneration, or totally comes from regeneration.
  • the heat absorbed in the process 3-4 of the (M 1 +M 2 ⁇ X) kg of working medium comes from the low-temperature heat load and partly comes from regeneration, or totally comes from regeneration.
  • the heat absorbed in the process s-t of the M kg of working medium comes from regeneration, or the external heat sources.
  • the process 4-5 of the (M 1 +M 2 ⁇ X) kg of working medium, the process 3-6 of the X kg of working medium and the process 7-8 of the (M 1 +M 2 ) kg of working medium are generally achieved by compressors and require mechanical work.
  • the process 7-t of the (M 1 +M) kg of working medium and process t-2 of the M 2 kg of working medium are achieved by an expander and provides mechanical work.
  • the process r-s of the M kg of working medium and the process 9-1 of the M 1 kg of working medium are achieved by a turbine or a throttle valve.
  • the total expansion work output is less than the total pressurization work input, and the difference (the cycle's net work) is inputted from the outside.
  • the reversed single-working-medium vapor combined cycle is completed.
  • the working medium conducts thirteen processes: a heat-absorption vaporization process 1-2 of the M 1 kg of working medium, a pressurization and heating up process 2-3 of the M 1 kg of working medium, a heat-absorption process 3-4 of the (M 1 +M 2 ) kg of working medium, a pressurization process 4-5 of the M 2 kg of working medium, a heat-releasing process 5-6 of the (M 1 +M 2 ) kg of working medium, a depressurization process 6-t of the (M 1 ⁇ M) kg of working medium, a depressurization process t-3 of the M 2 kg of working medium, a pressurization process 6-7 of the (M 1 +M) kg of working medium, a heat-releasing and condensation process 7-r of the M 2 kg of condensation, a depressurization process r-s of the M kg of working medium, a heat-absorption vaporization process s-t of the M kg of working medium, a heat-releasing process r-8 of the M 1 kg of condensation
  • the M 1 kg of working medium in the process 1-2 obtains the low-temperature heat load which is provided by the refrigerated medium or the low-temperature heat source.
  • the heat absorbed in the process 3-4 of the (M 1 +M 2 ) kg of working medium comes from the low-temperature heat load, or partly comes from the low-temperature heat load and partly comes from regeneration, or totally comes from regeneration.
  • the heat absorbed in the process s-t of the M kg of working medium comes from regeneration.
  • the process 2-3 of the M 1 kg of working medium, the process 4-5 of the (M 1 +M 2 ) kg of working medium and the process 6-7 of the (M 1 +M) kg of working medium are generally achieved by compressors and require mechanical work.
  • the depressurization process 6-t of the (M 1 ⁇ M) kg of working medium and the process t-3 of the M 2 kg of working medium are achieved by an expander and provides mechanical work.
  • the process r-s of the M kg of working medium and the process 8-1 of the M 1 kg of working medium are achieved by a turbine or a throttle valve.
  • the total expansion work output is less than the total pressurization work input, and the difference (the cycle's net work) is inputted from the outside.
  • the reversed single-working-medium vapor combined cycle is completed.
  • the T-s diagram of the reversed single-working-medium vapor combined cycle in FIG. 12 works as follows:
  • the working medium conducts sixteen processes: a heat-absorption vaporization process 1-2 of the M 1 kg of working medium, a pressurization and heating up process 2-3 of the M 1 kg of working medium, a heat-absorption process 3-4 of the (M 1 +M 2 ) kg of working medium, a heat-absorption process 4-5 of the (M 1 +M 2 ⁇ X) kg of working medium, a pressurization process 5-6 of the (M 1 +M 2 ⁇ X) kg of working medium, a heat-releasing process 6-7 of the (M 1 +M 2 ⁇ X) kg of working medium, a pressurization process 4-7 of the X kg of working medium, a heat-releasing process 7-8 of the (M 1 +M 2 ) kg of working medium, a depressurization process 8-t of the (M 1 ⁇ M) kg of working medium, a depressurization process t-3 of the M 2 kg of working medium, a pressurization process 8-9 of the (M 1 +M) kg of working medium
  • the M 1 kg of working medium in the process 1-2 obtains the low-temperature heat load which is provided by the refrigerated medium or the low-temperature heat source.
  • the heat absorbed in the process 3-4 of the (M 1 +M 2 ) kg of working medium comes from the low-temperature heat load, or partly comes from the low-temperature heat load and partly comes from regeneration, or totally comes from regeneration.
  • the heat absorbed in the process 4-5 of the (M 1 +M 2 ⁇ X) kg of working medium comes from the low-temperature heat load, or partly comes from the low-temperature heat load and partly comes from regeneration, or totally comes from regeneration.
  • the heat absorbed in the process s-t of the M kg of working medium comes from regeneration.
  • the process 2-3 of the M 1 kg of working medium, the process 5-6 of the (M 1 +M 2 ⁇ X) kg of working medium, the process 4-7 of the X kg of working medium and the process 8-9 of the (M 1 +M) kg of working medium are generally achieved by compressors and require mechanical work.
  • the depressurization process 8-t of the (M 2 ⁇ M) kg of working medium and process t-3 of the M 2 kg of working medium are achieved by an expander and provides mechanical work.
  • the process r-s of the M kg of working medium and the process c-1 of the M 1 are achieved by a turbine or a throttle valve.
  • the total expansion work output is less than the total pressurization work input, and the difference (the cycle's net work) is inputted from the outside.
  • the reversed single-working-medium vapor combined cycle is completed.
  • the technical effects of the present invention The reversed single-working-medium vapor combined cycle proposed by the present invention has the following effects and advantages:
  • the present invention establishes a basic theory of the mechanical-energy-driven refrigeration and heating (energy quality difference utilization).
  • the present invention eliminates or greatly reduces the exothermic load in the phase-change region, and correspondingly increases the exothermic load in the high-temperature region. Therefore, a reasonable coefficient of performance can be achieved.
  • the ranges of the working medium's parameters are expanded greatly. Therefore, the high-efficiency and high-temperature heating can be achieved.
  • the present invention provides a theoretical basis for reducing the operating pressure and improving the safety of the device.
  • the present invention reduces the cycle's compression ratio, and leads to the convenience in selecting and manufacturing the cycle's core devices.
  • the present invention possesses simple methods, reasonable processes and good applicability. It is a common technology to realize the effective utilization of energy grade differences.
  • the present invention only uses a single working medium, which is easy to produce and store;
  • the present invention can also reduce the operation cost and improve the flexibility of cycle regulation.
  • the present invention adopts the low-pressure and high-temperature operation mode in the high-temperature region; therefore, the contradiction among the coefficient of performance, the working medium's parameters and the material's temperature resistance and pressure resistance abilities, which is common in traditional refrigeration/heat pump devices, can be alleviated or solved.
  • the present invention can operate at a low pressure.
  • the present invention provides theoretical support for improving the safety of the device operation.
  • the present invention possesses a wide range of applicable working media.
  • the present invention can match energy supply with demand well. It is flexible to match the working medium and the working parameters.
  • the present invention expands the range of thermodynamic cycles for mechanical-energy-driven refrigeration and heating, and is conducive to better realize the efficient utilization of mechanical energy in the fields of refrigeration, high-temperature heating and variable temperature heating.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)
  • Press Drives And Press Lines (AREA)
  • Manufacturing Of Magnetic Record Carriers (AREA)
US17/619,246 2019-06-14 2020-06-10 Reversed single-working-medium vapor combined cycle Pending US20220282890A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CN201910564817 2019-06-14
CN201910564817.4 2019-06-14
PCT/CN2020/000132 WO2020248588A1 (zh) 2019-06-14 2020-06-10 逆向单工质蒸汽联合循环

Publications (1)

Publication Number Publication Date
US20220282890A1 true US20220282890A1 (en) 2022-09-08

Family

ID=73781329

Family Applications (1)

Application Number Title Priority Date Filing Date
US17/619,246 Pending US20220282890A1 (en) 2019-06-14 2020-06-10 Reversed single-working-medium vapor combined cycle

Country Status (4)

Country Link
US (1) US20220282890A1 (zh)
CN (1) CN115478917A (zh)
GB (1) GB2599867A (zh)
WO (1) WO2020248588A1 (zh)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03125863A (ja) * 1989-10-06 1991-05-29 Matsushita Electric Ind Co Ltd ２段圧縮冷凍サイクル装置

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7631510B2 (en) * 2005-02-28 2009-12-15 Thermal Analysis Partners, LLC. Multi-stage refrigeration system including sub-cycle control characteristics
KR102262722B1 (ko) * 2015-01-23 2021-06-09 엘지전자 주식회사 냉장고용 냉각사이클장치
CN105004100B (zh) * 2015-07-21 2018-06-26 同济大学 单制冷剂回路、多吸气压力的蒸气压缩制冷/热泵系统
CN106440510B (zh) * 2016-02-25 2020-05-29 李华玉 第二类热驱动压缩式热泵
WO2018068430A1 (zh) * 2016-10-12 2018-04-19 李华玉 单工质蒸汽联合循环与联合循环蒸汽动力装置
CN108679880B (zh) * 2017-03-30 2021-07-27 李华玉 双工质联合循环压缩式热泵
CN207180086U (zh) * 2017-07-27 2018-04-03 江苏雪龙新能源科技有限公司 二氧化碳热泵机组

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03125863A (ja) * 1989-10-06 1991-05-29 Matsushita Electric Ind Co Ltd ２段圧縮冷凍サイクル装置

Also Published As

Publication number Publication date
WO2020248588A1 (zh) 2020-12-17
CN115478917A (zh) 2022-12-16
GB2599867A (en) 2022-04-13

Similar Documents

Publication Publication Date Title
CN108662809B (zh) 双工质联合循环压缩式热泵
US20220282890A1 (en) Reversed single-working-medium vapor combined cycle
US20220252307A1 (en) Reversed single-working-medium vapor combined cycle
US20220364774A1 (en) Reversed single-working-medium vapor combined cycle
US20220213816A1 (en) Single-working-medium vapor combined cycle
US20220213812A1 (en) Single-working-medium vapor combined cycle
US20220260285A1 (en) Reversed single-working-medium vapor combined cycle
US20220316766A1 (en) Reversed single-working-medium vapor combined cycle
CN112344579A (zh) 逆向单工质蒸汽联合循环
WO2021072988A1 (zh) 逆向单工质蒸汽联合循环与单工质联合循环热泵装置
US20220195895A1 (en) Single-working-medium vapor combined cycle
WO2021047125A1 (zh) 逆向单工质蒸汽联合循环
US20220290582A1 (en) Single-working-medium vapor combined cycle
US20220381159A1 (en) Single-working-medium vapor combined cycle
US20220372894A1 (en) Single-working-medium vapor combined cycle
WO2021047126A1 (zh) 逆向单工质蒸汽联合循环
US20220213817A1 (en) Single-working-medium vapor combined cycle
WO2021047127A1 (zh) 逆向单工质蒸汽联合循环
US20240018885A1 (en) Single-working-medium vapor combined cycle
WO2022105044A1 (zh) 第一类热驱动联合循环热泵装置
WO2021042646A1 (zh) 单工质蒸汽联合循环
US20220178277A1 (en) Single-working-medium vapor combined cycle
WO2021042648A1 (zh) 单工质蒸汽联合循环
WO2021042647A1 (zh) 单工质蒸汽联合循环
CN115307333A (zh) 双向第一类单工质联合循环

Legal Events

Date Code Title Description
STPP Information on status: patent application and granting procedure in general

Free format text: APPLICATION UNDERGOING PREEXAM PROCESSING

STPP Information on status: patent application and granting procedure in general

Free format text: DOCKETED NEW CASE - READY FOR EXAMINATION

STPP Information on status: patent application and granting procedure in general

Free format text: NON FINAL ACTION MAILED