WO2019218838A1 - Système de pompe à chaleur à coulis de glace - Google Patents

Système de pompe à chaleur à coulis de glace Download PDF

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Publication number
WO2019218838A1
WO2019218838A1 PCT/CN2019/083382 CN2019083382W WO2019218838A1 WO 2019218838 A1 WO2019218838 A1 WO 2019218838A1 CN 2019083382 W CN2019083382 W CN 2019083382W WO 2019218838 A1 WO2019218838 A1 WO 2019218838A1
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WIPO (PCT)
Prior art keywords
ice
way valve
evaporator
solution
casing
Prior art date
Application number
PCT/CN2019/083382
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English (en)
Chinese (zh)
Inventor
钱志博
郝宏伟
杜强
程港
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中机十院国际工程有限公司
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Publication of WO2019218838A1 publication Critical patent/WO2019218838A1/fr

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
    • F24F5/0017—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning using cold storage bodies, e.g. ice
    • 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
    • F25B30/00—Heat pumps
    • F25B30/06—Heat pumps characterised by the source of low potential heat
    • 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
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/30—Expansion means; Dispositions thereof
    • F25B41/31—Expansion valves
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/14—Thermal energy storage

Definitions

  • the present invention relates to a novel energy supply system, and more particularly to a fluid ice heat pump system.
  • heat pumps play an important role in the heating industry, and traditional heat pump technology has its own limitations:
  • Air energy (source) heat pumps are greatly affected by air temperature, and are widely used in southern China. But it is plagued by frosting problems. North applications are less energy efficient.
  • Water source heat pump has the following limitations:
  • the technology uses the coagulation heat of water to take heat, which will be 80 times of the sensible heat of water, which will overcome the shortcomings of the above heat pump system and realize the revolutionary progress of the heat pump system.
  • the technical problem to be solved by the present invention is to overcome the shortcomings of the existing heat pump, and to provide a fluid ice heat pump system, which can realize the winter heating and store the cold amount in winter by using the fluid ice heat pump and the energy storage pool. It can be used for air conditioning in summer. At the same time, the low-voltage electricity can be used for air-conditioning system. At the same time, the system can also use the water source of rivers, lakes and seas, and use the mixture of ice and water to greatly reduce the heat pump water. Volume, this technology is a revolution in heat pump systems.
  • the fluid ice heat pump system of the invention adopts a supercooling technology, and cools a certain concentration of the solution to a certain degree of subcooling temperature, and forms an ice crystal in the solution by using an ice forming phenomenon of the salt solution, and the following describes the ice forming phenomenon.
  • the principle The principle.
  • Fig. 1 it is a solution concentration phase equilibrium diagram.
  • the abscissa indicates the solution concentration
  • the ordinate indicates the temperature
  • WE is the precipitation line
  • EG is the precipitation line
  • point E is the eutectic point.
  • the ice-dissolving line and the salt-dissolving line are solution zones; the area between the TE line and the ice-dissolving line is the ice + solution coexistence zone; the area between the TE line and the salt-dissolving line is the solute + saturated solution coexistence zone; The line on the line and the salt line is the solution zone; the lower part of the TE line is the solid coexistence zone of ice + solute.
  • the solution of each concentration corresponds to the precipitation temperature of an ice crystal (water ice), and the ice crystal can be continuously precipitated when the temperature of the solution falls to the ice-precipitation temperature.
  • the flow ice unit can be used as a salt (sea water, NaCl salt solution, etc.), alcohol (methanol, ethanol, glycerol, propylene glycol, ethylene glycol solution, etc.)
  • the technology uses ethylene glycol as a brine carrier. At this time, the entire circulating ethylene glycol solution is in a solid-liquid mixed state. When the mixed solution flows through a large volume storage tank, the solution The ice crystals naturally float up to achieve the purpose of separating the ice crystals from the ethylene glycol solution.
  • a fluidized ice heat pump system of the present invention comprises: an outer water circulation loop, a refrigerant circulation loop, a solution inner circulation loop and a user end circulation loop, and the outer end circulation loop comprises: a cooling tower, a fourth pump, and a fifth
  • the two-way valve, one side of the condenser and the first two-way valve are sequentially connected in series to form an outer water circulation circuit
  • the refrigerant circulation circuit includes: one side of the fluid ice evaporator, the other side of the compressor and the condenser
  • the expansion valve is connected in series to form a refrigerant circulation circuit
  • one side of the condenser and the other side of the condenser are coupled to each other in the condenser
  • the circulation circuit in the solution includes: the other side of the flow ice evaporator
  • the second pump, one side of the heat exchanger, the second electric two-way valve, the sixth two-way valve and the first pump are sequentially connected in series to form a solution inner circulation loop
  • a fluidized ice heat pump system of the present invention wherein: in the circulation loop of the solution, a gap is provided between the inlet of the second pump and one side of the heat exchanger and the second electric two-way valve a circuit of an electric two-way valve;
  • a fluidized ice heat pump system wherein: the solution flowing in the circulation loop of the solution is seawater, NaCl salt solution, methanol, ethanol, glycerol, propylene glycol or ethylene glycol solution, and the freezing point of the solution is smaller than 0 ° C.
  • a fluidic ice heat pump system of the present invention wherein: the fluid ice evaporator comprises: an evaporator casing, a motor, a transmission, an upper partition, a lower partition, a baffle and a top support plate, A motor is arranged on the top of the evaporator casing, and a top support plate and an upper partition plate are arranged in the upper part of the evaporator casing from top to bottom.
  • the space between the top support plate and the upper partition plate is a fluid ice chamber.
  • the lower part of the evaporator casing is provided with a lower partition, and the space partitioned between the lower partition and the lower part of the evaporator casing is a liquid brine chamber, and the upper partition and the lower partition along the height direction of the evaporator casing
  • a plurality of baffles are arranged between the plurality of tubes in the evaporator casing space between the upper partition and the lower partition, and the tubes pass through the upper partition and several baffles in order from top to bottom.
  • a lower partition plate the upper end of which communicates with the fluid ice chamber, the lower end communicates with the liquid brine chamber, and a spiral stirring shaft is arranged in each of the tubes, and the upper end of the spiral stirring shaft passes through the top support plate and passes through the transmission device Driven by the motor, the lower end of the screw agitator shaft is supported under the evaporator housing a liquid brine inlet is opened on the evaporator casing of the liquid brine chamber, and a fluid ice mixed solution outlet is opened on the evaporator shell of the fluid ice chamber, and the bottom baffle is separated from the bottom.
  • a liquid refrigerant inlet is formed in the evaporator casing between the plates, and a vaporous refrigerant outlet is opened on the evaporator casing between the upper partition and the uppermost baffle, and each baffle in the evaporator casing In the half of the area, there are several baffles, and the opening area of the adjacent baffles is opened in the other half of the baffle adjacent thereto, and the liquid refrigerant is in the evaporator casing.
  • the glyph flows, the gap between the spiral stirring shaft and the wall of the tube tube is 5-10 cm, the rotation speed of the spiral stirring shaft is 500 rpm to 600 rpm, the screw stirring shaft is a screw rod, and the spiral angle of the screw rod 40-50°, the number of heads of the auger is 6-10;
  • the fluid ice heat pump system of the present invention wherein: the outlet of the fluid ice mixed solution protrudes into the fluid ice chamber, and communicates with the fluid ice chamber through the ice blocking bell mouth, and the ice blocking bell mouth
  • the angle of the angle is 20 ° - 30 °;
  • a fluidized ice heat pump system wherein: the transmission device comprises: a driving wheel, a driven wheel, a transmission wheel and a plurality of agitating gears, and a stirring gear is arranged at an upper end of each of the spiral stirring shafts, and the motor drives the active
  • the wheel rotates, the driving wheel meshes with the driven wheel, the driven wheel and the transmission wheel are mounted on the same rotating shaft, the transmission wheel meshes with a stirring gear installed in the center of the evaporator casing, the agitating gear meshes with its adjacent agitating gear, and so on,
  • the drive wheel drives the agitating gears in all evaporator housings to rotate;
  • a fluidized ice heat pump system wherein: the baffles are evenly distributed along the height direction of the evaporator casing, and the number thereof is 5-20;
  • a fluidized ice heat pump system wherein: the bottom end of the spiral agitating shaft is mounted on the lower end of the evaporator casing by a stirrer thrust limiter, and the column pipes are evenly distributed in the evaporator casing space;
  • a fluidized ice heat pump system wherein: the energy storage tank comprises: a casing, a liquid solution outlet pipe, an ice water mixing inlet pipe and a rehydration pipe, and the ice water mixing inlet pipe is installed in the casing.
  • the ice water mixing liquid inlet pipe has a plurality of liquid discharging holes
  • the liquid solution discharging pipe is installed under the casing
  • the liquid solution discharging pipe has a plurality of liquid suction holes
  • the upper end of the casing is The rehydration tube is connected, the ice water mixed solution is mixed into the liquid pipe from the ice water into the casing, the solution sinks under the casing to form a lower solution layer, and the lower solution layer floats with the upper ice slurry layer, and the storage tank is buried in the frozen soil.
  • a fluid ice heat pump system of the present invention wherein: the casing is a heat-insulating and waterproof casing.
  • the fluid ice heat pump system of the present invention has the following advantages:
  • the heating system can operate independently without any external heat source.
  • the heat pump system uses the heat source more fully, and the heat of freezing of ice is 80 times that of water.
  • This technology is energy saving and emission reduction for the country, saving the operating expenses for the enterprise to realize the capital saving. It is a good technology for the people to return the blue sky and blue sky to the benefit of the country, the profitable enterprise and the benefit of the people.
  • the invention utilizes a heat pump as a clean renewable energy technology, which plays a pivotal role in the heating industry, and the conventional heat pump technology has its own limitations.
  • the system uses the coagulation heat of water to take heat, which will be 80 times of the sensible heat of water, which will overcome the shortcomings of the original heat pump system and realize the revolutionary progress of the heat pump system.
  • the fluid ice heat pump system of the invention comprises a fluid ice heat pump, an energy storage pool and a water pump and the like. The system can realize independent operation of the building in winter without relying on other heat sources, take heat in the solution in the energy storage tank, and precipitate ice crystals in the solution.
  • the heat energy source of the technology can be extended to heat sources such as rivers, lakes and seas, and can be used in the entire heating area of China, and the application range is extremely wide.
  • Figure 1 is a phase equilibrium diagram of solution concentration
  • FIG. 2 is a schematic diagram of a system of a fluid ice heat pump.
  • Figure 3 is a schematic view of the system of Figure 2 when it is heated in winter;
  • Figure 4 is a schematic view of the system of Figure 2 in the summer season
  • Figure 5 is a schematic view of the system of Figure 2 during ice storage in summer;
  • Figure 6 is a schematic view of the system of Figure 2 in the joint cooling in summer;
  • Figure 7 is a schematic cross-sectional view of the fluid ice evaporator of Figure 2;
  • Figure 8 is a cross-sectional view taken along line A-A of Figure 7, and Figure 8 is for clearly drawing the meshing transmission relationship between the transmission wheel and the agitating gear;
  • Figure 9 is an enlarged schematic view of the spiral agitating shaft of Figure 7;
  • Figure 10 is a schematic cross-sectional view of the energy storage tank of Figure 2.
  • reference numeral 101A is a first two-way valve
  • reference numeral 101B is a second two-way valve
  • reference numeral 101C is a third two-way valve
  • reference numeral 101D is a fourth two-way valve
  • reference numeral 101E is a fifth two.
  • the valve is the sixth two-way valve; the reference numeral 101G is the seventh two-way valve; the reference numeral 101H is the eighth two-way valve; the reference numeral 101I is the ninth two-way valve; the reference numeral 101J is the twelfth-way valve; Is the heat storage tank; the reference numeral 103 is the heat exchanger; the reference numeral 104 is the first pump; the reference numeral 105 is the second pump; the reference numeral 106 is the third pump; the reference numeral 107 is the user end; the reference numeral 108 is the fourth pump; Column 110 is a compressor; numeral 111 is a condenser; numeral 112 is a fluid ice evaporator; numeral 113 is an expansion valve; numeral 114 is an outer water circulation circuit; numeral 115 is a refrigerant circulation circuit; Circulating circuit; reference numeral 117 is a customer end circulating circuit; reference numeral 118A is a first electric two-way valve; and reference numeral 118B is
  • reference numeral 1 is a flow ice mixed solution outlet; numeral 2 is an ice blocking bell mouth; numeral 3 is a motor; numeral 4 is a transmission device; numeral 5 is a screw agitating shaft;
  • reference numeral 23 is a lower solution layer
  • reference numeral 24 is a liquid absorption hole
  • reference numeral 25 is a liquid solution discharge pipe
  • reference numeral 26 is a liquid replacement pipe
  • reference numeral 27 is a casing
  • reference numeral 28 is an ice water mixed liquid inlet pipe
  • Reference numeral 29 is a liquid discharge hole
  • reference numeral 30 is an upper ice slurry layer.
  • the fluid ice heat pump system of the present invention comprises: an outer water circulation circuit 114, a refrigerant circulation circuit 115, a solution inner circulation circuit 116 and a customer end circulation circuit 117, and the outer end circulation circuit 114 includes: a cooling tower 109.
  • the fourth pump 108, the fifth two-way valve 101E, one side of the condenser 111 and the first two-way valve 101A are sequentially connected in series to form an outer end water circulation circuit;
  • the refrigerant circulation circuit 115 includes: a fluid ice evaporator 112
  • One side, the compressor 110, the other side of the condenser 111, and the expansion valve 113 are sequentially connected in series to form a refrigerant circulation circuit; one side of the condenser 111 and the other side of the condenser 111 are coupled to each other in the condenser 111.
  • the in-solution circulation loop 116 includes: the other side of the fluid ice evaporator 112, the second pump 105, one side of the heat exchanger 103, the second electric two-way valve 118B, the sixth two-way valve 101F, and the first
  • the pump 104 is sequentially connected in series to the in-solution circulation loop.
  • One side of the fluid ice evaporator 112 and the other side of the fluid ice evaporator 112 are coupled to each other in the fluid ice evaporator 112.
  • the user end circulation loop 117 includes: From the other side of the heat exchanger 103, the third pump 106, the user end 1 07 and the third two-way valve 101C are sequentially connected in series to form a customer end circulation loop, one side of the heat exchanger 103 and the other side of the heat exchanger 103 are coupled to each other in the heat exchanger 103, and two sides of the condenser 111 are The ends are connected to both ends of the other side of the heat exchanger 103 through the second two-way valve 101B and the fourth two-way valve 101D, respectively.
  • the in-solution circulation circuit 116 further includes an accumulator 102, and the inlet of the accumulator 102 is connected to the line between the other side of the flow ice evaporator 112 and the second pump 105 through the eighth two-way valve 101H.
  • the liquid outlet of the accumulator 102 is connected to the pipeline between the second electric two-way valve 118B and the sixth two-way valve 101F through the twelfth valve 101J, and the liquid inlet and the second of the accumulator 102
  • a ninth two-way valve 101I is further disposed on the pipeline between the electric two-way valve 118B and the sixth two-way valve 101F, and the liquid outlet of the accumulator 102 and the other side and the second of the fluid ice evaporator 112
  • a seventh two-way valve 101G is also mounted on the line between the pumps 105.
  • a line with the first electric two-way valve 118A is installed between the inlet of the second pump 105 and one side of the heat exchanger 103 and the second electric two-way valve 118B.
  • the solution flowing in the circulation loop 116 in the solution is seawater, a NaCl salt solution, methanol, ethanol, glycerol, propylene glycol or ethylene glycol solution, and the above solution has a freezing point of less than 0 °C.
  • the fluid ice evaporator 112 includes an evaporator casing 6, a motor 3, a transmission 4, an upper partition 9, a lower partition 14, a baffle 11 and a top support plate 7, in the evaporator casing.
  • the top of the 6 is equipped with a motor 3, and the top of the evaporator casing 6 is provided with a top support plate 7 and an upper partition plate 9 from top to bottom.
  • the space between the top support plate 7 and the upper partition plate 9 is fluid ice.
  • the junction chamber 8, the flow ice mixed solution outlet 1 extends into the fluid ice chamber 8, and communicates with the fluid ice chamber 8 through the ice blocking bell mouth 2, and the angle of the ice blocking bell mouth 2 is 20°. —30°.
  • a lower partition 14 is provided in a lower portion of the evaporator casing 6, and a space partitioned between the lower partition 14 and the lower portion of the evaporator casing 6 is a liquid brine chamber 17 in the height direction of the evaporator casing 6.
  • a plurality of baffles 11 are disposed between the partition plate 9 and the lower partition plate 14, and a plurality of column tubes 10 are arranged in the space of the evaporator casing 6 between the upper partition plate 9 and the lower partition plate 14, and the column tubes 10 are The upper partition 9 and the plurality of baffles 11 and the lower partition 14 are sequentially passed through, and the upper end thereof communicates with the fluid ice chamber 8 and the lower end communicates with the liquid brine chamber 17 in each of the tubes.
  • the 10 is provided with a screw agitating shaft 5, the upper end of which is passed through the top support plate 7 and is driven by the motor 3 through the transmission 4.
  • the lower end of the agitator shaft 5 is supported at the lower end of the evaporator casing 6, in a liquid carrier
  • the evaporator casing 6 of the agent chamber 17 is provided with a liquid brine inlet 16 on the evaporator casing 6 of the fluid ice chamber 8 with a flow ice mixed solution outlet 1 at the lowermost baffle 11 and
  • the evaporator casing 6 between the lower partitions 14 is provided with a liquid refrigerant inlet 13 and an evaporator casing between the upper partition 9 and the uppermost baffle 11 6 is provided with a gaseous refrigerant outlet 18, and a plurality of baffles 12 are opened in a region of one half of each baffle 11 in the evaporator casing 6, and the opening area of the adjacent baffles 11 is opened.
  • the liquid refrigerant flows in a zigzag shape in the evaporator casing 6.
  • the baffles 11 are evenly distributed along the height direction of the evaporator casing 6, and the number thereof is 5-20.
  • the gap between the spiral stirring shaft 5 and the tube wall of the column tube 10 is 5-10 cm, the rotation speed of the spiral stirring shaft 5 is 500 rpm to 600 rpm, the spiral stirring shaft 5 is a screw rod, and the spiral rod of the screw rod is raised.
  • the angle of 40-50°, the number of heads of the auger is 6-10.
  • the bottom end of the agitating shaft 5 is attached to the lower end of the evaporator casing 6 by a stirrer thrust stopper 15, and the tubes 10 are evenly distributed in the space of the evaporator casing 6.
  • the principle of making ice slurry controlling the flow rate of the refrigerant and the evaporation temperature, so that the refrigerant is evaporated in the flow ice evaporator 112 at a temperature of about -3 ° C, and the heat is exchanged with the solution in the tube process. 10 ice crystals are precipitated in the surface.
  • the agitating rod has two functions.
  • One is to generate centrifugal force during the rotation process, wash the surface of the column 10 to wash the ice crystals on the surface of the evaporator tube 10; the second is to stir the rod into a screw shape, in addition to the centrifugal force, There is an upward thrust, and after the centrifugal flushing, the mixed solution is lifted into the fluid ice chamber 8 as soon as possible to avoid condensation on the inner surface of the tube 10.
  • the transmission device 4 includes: a driving wheel 19, a driven wheel 22, a transmission wheel 21 and a plurality of agitating gears 20, and a stirring gear 20 is arranged at an upper end of each of the agitating shafts 5,
  • the motor 3 drives the driving wheel 19 to rotate, the driving wheel 19 meshes with the driven wheel 22, the driven wheel 22 and the transmission wheel 21 are mounted on the same rotating shaft, and the driving wheel 21 meshes with the stirring gear 20 installed at the center of the evaporator casing 6, the agitating gear 20 meshes with its adjacent agitating gear 20, and so on, the drive wheel 21 drives all of the agitating gears 20 within the evaporator casing 6 to rotate.
  • the energy storage tank 102 includes a casing 27, a liquid solution outlet pipe 25, an ice water mixing inlet pipe 28, and a refilling pipe 26, and the ice water mixing inlet pipe 28 is mounted above the casing 27.
  • the ice water mixing inlet pipe 28 is provided with a plurality of liquid discharging holes 29, and the liquid solution discharging pipe 25 is installed under the casing 27, and the liquid solution discharging pipe 25 is provided with a plurality of liquid suction holes 24,
  • the upper end of the casing 27 is connected to the refilling pipe 26, and the ice-water mixed solution is mixed into the casing 27 from the ice water mixing pipe 28, and the solution sinks below the casing 27 to form a lower solution layer 23, and the lower solution layer 23 is floated thereon.
  • Ice slurry layer 30 The casing 27 is a heat-insulating and waterproof casing, and the energy storage tank 102 is buried in a formation below the frozen soil layer.
  • the rehydration tube 26 is opened, the rehydration tube 26 is fed with the solution so that the ice begins to melt, and the lower solution layer 23 is formed below the shell 27, and the lower solution layer 23 is floated with the upper slurry.
  • the liquid suction hole 24 on the liquid solution discharge pipe 25 sucks out the cold solution.
  • the first two-way valve 101A, the third two-way valve 101C, the fifth two-way valve 101E, the seventh two-way valve 101G, and the ninth two-way valve 101I first The electric two-way valve 118A and the second electric two-way valve 118B are closed, and the second two-way valve 101B, the eighth two-way valve 101H, the twelfth-th valve 101J, the sixth two-way valve 101F, and the fourth two-way valve 101D are opened.
  • the cooling tower 109 and the heat exchanger 103 are both inoperative, and the flow ice heat pump system is simplified to a schematic diagram as shown in FIG.
  • the outer water circulation circuit 114 and a part of the solution inner circulation circuit 116 are removed, which includes: a refrigeration cycle 115 and
  • the first pump 104 extracts the solution from the energy storage tank 102 and sends it to the fluid ice evaporator 112. Due to the special design of the fluid ice evaporator 112, ice crystal precipitation can be realized through the fluid ice. After the evaporator 112 absorbs heat, a mixed fluid of ice crystals and a solution is formed from the solution processed therein.
  • the ice crystal floats from the solution and floats above the liquid surface, and the remaining The solution is pumped through the first pump 4 to the fluid ice evaporator 112 to continue to absorb heat.
  • the solution is pumped through the first pump 4 to the fluid ice evaporator 112 to continue to absorb heat.
  • the low-temperature water flowing back from the hot-heat user 107 is heated on the condenser 111 side of the refrigeration cycle 115 to reach the heating temperature, and then sent to the hot and cold by the third pump 6.
  • User 107 completes the heating cycle.
  • the amount of ice in the accumulator 102 gradually increases until it is full.
  • the eighth two-way valve 101H, the ninth two-way valve 101I, and the twelfth-way valve 101J are closed, the seventh two-way valve 101G, the third two-way valve 101C, the first electric two-way valve 118A, and the second electric two-way valve 118B opens.
  • the storage tank 102 is filled with ice, and the cooling tower 109, the condenser 111, the compressor 110, the expansion valve 113, the flow ice evaporator 112, and the first pump 104 are all inoperative, and the flow ice heat pump system is simplified as 4 As shown, the outer end water circulation circuit 114 and the refrigerating cycle 115 are removed, and only the accumulator 102 is used to cool the user end 107. At this time, the rehydration tube 26 of the accumulator 102 is opened, and the replenishing tube 26 is fed into the solution. The ice begins to melt, and the second pump 105 draws a low temperature solution from the lower portion of the energy storage tank 102.
  • the low temperature solution is heated by the heat exchanger 103 and then sent back to the upper portion of the energy storage tank 102 by the pipeline, and the ice melting is continued to complete the cycle.
  • the third pump 6 is sent to the cold heat user 7 for cooling to realize the refrigeration cycle.
  • first electric two-way valve 118A and second electric two-way valve 118B are closed, first two-way valve 101A, eighth two-way valve 101H, twelfth-way valve 101J, sixth two The valve 101F and the fifth two-way valve 101E are opened, and the heat exchanger 103, the third pump 6, and the user terminal 107 are not operated, and the flow ice heat pump system is simplified to a schematic diagram as shown in FIG.
  • the refrigeration cycle 115 needs to be turned on.
  • the ice is continuously cooled during the low-power period to supplement the amount of ice in the accumulator 102, and the fourth pump 108 realizes a cooling water circulation on the condenser 111 side of the refrigeration cycle 115, and the heat absorbed by the condenser 111 is radiated through the cooling tower 109.
  • the flow ice evaporator 112 in the refrigeration cycle 115 continuously feeds the ice solution into the energy storage pool 102 through the first pump 104, and opens the above ice melting strategy during the peak power period to supply the user terminal 107 with cooling, maximizing Save operating costs and balance the grid.
  • the refrigeration cycle 115 and the accumulator 102 simultaneously supply cooling to the system, the first two-way valve 101A, the third two-way valve 101C, the fifth two-way valve 101E, the sixth two-way valve 101F, and the seventh The two-way valve 101G, the eighth two-way valve 101H, the ninth two-way valve 101I, the first electric two-way valve 118A, and the second electric two-way valve 118B are opened, the second two-way valve 101B, the fourth two-way valve 101D, The eighth two-way valve 101H and the twelfth-way valve 101J are closed. As shown in FIG.
  • the cold water from the fluid ice evaporator 112 and the accumulator 102 is sent to the heat exchanger 103 through the second pump 105, cold water. After the temperature rises, it returns to the fluid ice evaporator 112 and the energy storage tank 102 to cool down, and the flow rate of the two device solutions entering the fluid ice evaporator 112 and the energy storage pool 102 can be according to the flow rate of the second pump 105 and the first pump 104. The difference is automatically matched.
  • the amount of cold stored in the accumulator pool 102 is in the form of ice, and a solution having a higher temperature that needs to be leached from the upper portion of the accumulator 102 through the switching of the ninth two-way valve 101I will float on the surface of the solution.
  • the bypass line equipped with the first electric two-way valve 118 in parallel with the refrigeration cycle 115 and the accumulator 102 mainly serves to adjust the water temperature, and ensures that the inlet water temperature of one side of the heat exchanger 103 is constant, thereby ensuring the user end. 107 water temperature is constant.
  • the cold water generated by the heat exchanger 103 is sent to the customer terminal 107 by the third pump 106 to cool the building room, and the temperature rise water from the user terminal 107 is returned to the switch.
  • the heater 103 cools down to achieve a cooling cycle.
  • the cooling water generated by the cooling tower 109 is sent to the condenser 111 side of the refrigeration cycle 115 by the fourth pump 8, and heat is radiated to the refrigeration cycle 115.

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  • Engineering & Computer Science (AREA)
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  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
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Abstract

La présente invention concerne un système de pompe à chaleur à coulis de glace, ledit système comprenant : une boucle de circulation d'eau d'extrémité externe, une boucle de circulation de fluide frigorigène, une boucle de circulation interne de solution et une boucle de circulation d'extrémité utilisateur. La boucle de circulation interne de solution comprend en outre : un bassin de stockage d'énergie, une entrée de liquide du bassin de stockage d'énergie étant reliée à une conduite entre l'autre côté d'un évaporateur de coulis de glace et une seconde pompe par l'intermédiaire d'une huitième soupape à deux voies, une sortie de liquide du bassin de stockage d'énergie étant reliée à une conduite entre une deuxième soupape à deux voies électrique et une sixième soupape à deux voies par l'intermédiaire d'une dixième soupape à deux voies, une neuvième soupape à deux voies étant en outre montée sur un conduit entre l'entrée de liquide du bassin de stockage d'énergie, la seconde soupape à deux voies électrique et la sixième soupape à deux voies et une septième soupape à deux voies étant en outre montée sur un conduit entre la sortie de liquide du bassin de stockage d'énergie, l'autre côté de l'évaporateur de coulis de glace et la seconde pompe. Le système absorbe la chaleur résultant de la solidification de l'eau, la chaleur de solidification de l'eau correspondant à environ 80 fois la chaleur sensible de l'eau, ce qui permet d'éliminer les défauts d'un ancien système de pompe à chaleur et d'obtenir un stockage d'énergie sur toutes les saisons. Le système marque une avancée révolutionnaire dans les systèmes de pompe à chaleur en permettant d'économiser de façon considérable sur les coûts de fonctionnement d'un système de climatisation et en jouant un rôle positif dans l'équilibrage d'un réseau électrique.
PCT/CN2019/083382 2018-05-17 2019-04-19 Système de pompe à chaleur à coulis de glace WO2019218838A1 (fr)

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