CN112833482A - Solid heat storage and steam type absorption combined cold and hot dual-supply system - Google Patents

Solid heat storage and steam type absorption combined cold and hot dual-supply system Download PDF

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Publication number
CN112833482A
CN112833482A CN202011489253.1A CN202011489253A CN112833482A CN 112833482 A CN112833482 A CN 112833482A CN 202011489253 A CN202011489253 A CN 202011489253A CN 112833482 A CN112833482 A CN 112833482A
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China
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valve
heat
heat exchanger
condenser
evaporator
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CN202011489253.1A
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毕月虹
鲁一涵
吴娟
李玙璠
李继壮
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Beijing University of Technology
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Beijing University of Technology
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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
    • 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
    • F24F5/0014—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 absorption or desorption
    • 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
    • F24F5/0046—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 using natural energy, e.g. solar energy, energy from the ground
    • 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
    • F24F2005/0032—Systems storing energy during the night
    • 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
    • F24F5/0046—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 using natural energy, e.g. solar energy, energy from the ground
    • F24F2005/0057—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 using natural energy, e.g. solar energy, energy from the ground receiving heat-exchange fluid from a closed circuit in the ground
    • 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
    • Y02B10/00—Integration of renewable energy sources in buildings
    • Y02B10/40—Geothermal heat-pumps
    • 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

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Sustainable Energy (AREA)
  • Sorption Type Refrigeration Machines (AREA)

Abstract

A solid heat storage and steam type absorption combined cold and heat double supply system belongs to the technical field of solid heat storage. The invention adopts magnesia bricks as solid heat storage materials, and the working medium pair of the absorption refrigerator adopts a lithium bromide-water binary solution. The solid energy storage technology not only overcomes the pollution problem caused by the traditional boiler providing steam as a heat source, but also has the advantages of small occupied area, high heat storage temperature, strong heat storage capacity, heat storage rate of over 85 percent, stable output temperature and wider application range. Particularly, the solid heat storage technology utilizes a peak-valley electricity price policy, so that the operation cost can be greatly reduced, the operation is clean and pollution-free, and the operation is beneficial to ensuring the safety of a power grid, improving the proportion of clean energy and improving the utilization efficiency of energy. In addition, the system is combined with a ground source heat pump, the refrigerating system absorbs soil heat in cold supply seasons, heat is discharged to the soil in summer, cold and hot supply is achieved, the utilization of renewable energy sources is increased, and the environmental protection benefit is remarkable.

Description

Solid heat storage and steam type absorption combined cold and hot dual-supply system
Technical Field
The invention belongs to the technical field of solid heat storage, and particularly relates to a solid heat storage and steam type absorption combined cold and hot dual supply system.
Background
With the innovation of electric power price system and the increase of ecological environmental protection pressure, clean energy is more and more valued. The solid heat storage technology is a clean energy utilization technology which stores off-peak electricity in a heat energy mode at night and releases heat in a peak electricity time period. Among various non-phase-change energy storage technologies, water heat storage and solid heat storage are energy storage technologies which are developed more mature and widely used, however, the former has the main defects of low energy storage density, large heat storage device volume and unstable water temperature during heat release, the latter has high heat storage temperature, small occupied area and much larger heat storage capacity than the former, the heat storage rate can exceed 85%, the output temperature is stable, and the application range is wider. The solid heat storage technology is organically combined with the traditional lithium bromide absorption refrigeration system and the ground source heat pump, so that economic benefits and social benefits can be both considered. The solid heat storage technology utilizes a peak-valley electricity price policy, so that the operation cost can be greatly reduced, the operation is clean and pollution-free, and the operation is favorable for ensuring the safety of a power grid, improving the proportion of clean energy and improving the utilization efficiency of energy. The ground source heat pump technology belongs to the renewable energy utilization technology, and the operation of the device has no pollution and is not limited by regions, resources and the like, so that the geothermal energy becomes a form of clean renewable energy. In order to further develop the application potential of the solid heat storage technology and optimize the heat source form of the absorption refrigeration system, the invention provides a solid heat storage and steam type absorption combined cold and hot dual supply system. In addition, the system is combined with a ground source heat pump, so that the utilization of renewable energy sources is increased, and the environmental protection benefit is remarkable.
Disclosure of Invention
The invention provides a solid heat storage and steam type absorption combined cold and hot dual supply system. The solid heat storage adopts magnesia bricks as heat storage materials, and the absorption type refrigeration working medium pair adopts a lithium bromide-water binary solution. The solid energy storage technology overcomes the pollution problem caused by the operation of the traditional absorption refrigeration system which provides steam by using a boiler, reduces the operation cost and the user bearing cost, improves the power load and assists in peak-valley regulation.
The utility model provides a cold and hot dual supply system is united with vapour type absorption to solid heat accumulation which characterized in that: an energy storage and cold and hot dual supply system is applied, the system comprising: the system comprises a solid heat storage device (1), an air-water heat exchanger (2), a generator (3), a condenser (4), an evaporator (5), an absorber (6), a solution heat exchanger (7), an air conditioner terminal (8) and a ground heat exchanger (9). First throttle valve (Ex)1) Between the condenser (4) and the evaporator (5), the flow direction is from the condenser (4) to the evaporator (5), and the refrigerant water passes through a first throttle valve (Ex)1) A throttling process occurs; second throttle valve (Ex)2) Is positioned between the absorber (6) and the solution heat exchanger (7), the flow direction is from the solution heat exchanger (7) to the absorber (6), and the solution passes through a second throttle valve (Ex)2) A throttling process occurs; first valve (V)1) And a second valve (V)2) Between the evaporator (5) and the air-conditioning end (8), is a stop valve, a first valve (V)1) A second valve (V) for controlling the flow of cold water from the evaporator (5) to the air-conditioning terminal (8)2) Is responsible for controlling the return water flowing from the air conditioner tail end (8) to the evaporator (5); third valve (V)3) And a fourth valve (V)4) Between the condenser (4) and the air-conditioning terminal (8), is a stop valve, a third valve (V)3) Is responsible for controlling the flow of hot water from the condenser (4) to the air conditioning terminal (8), a fourth valve (V)4) Is responsible for controlling the return water flowing from the air conditioner tail end (8) to the condenser (4); fifth valve (V)5) And a sixth valve (V)6) A fifth valve (V) which is a stop valve and is positioned between the condenser (4) and the ground heat exchanger (9)5) Is responsible for controlling the return water of the cooling water flowing from the ground heat exchanger (9) to the condenser (4), and a sixth valve (V)6) Is responsible for controlling the cooling water flowing from the condenser (4) to the ground heat exchanger (9); seventh valve (V)7) And an eighth valve (V)8) A seventh valve (V) which is a stop valve and is positioned between the evaporator (5) and the ground heat exchanger (9)7) Is responsible for controlling the cold water flowing from the evaporator (5) to the ground heat exchanger (9), an eighth valve (V)8) And the ground heat exchanger (9) is responsible for controlling the return water flowing from the evaporator (5). Pump number one (P)1) In the air-water heat exchangeBetween the generator (2) and the generator (3), a second pump (P)2) Between the absorber (6) and the solution heat exchanger (7), a third pump (P)3) A fourth pump (P) is positioned between the condenser (4) and the ground heat exchanger (9)4) Is positioned between the evaporator (5) and the air conditioning terminal (8).
The solid heat storage device (1) and the air-water heat exchanger (2) are connected into an air circulation loop, the solid heat storage device (1) is connected with a high-voltage wire to store heat by utilizing valley electricity, the air flows through the solid heat storage device (1) to be heated, the high-temperature air at 300-500 ℃ is conveyed to the air-water heat exchanger (2) through a pipeline to exchange heat, and after the heat exchange is finished, the high-temperature air passes through the pipeline and passes through a first pump (P)1) And conveying the solid heat storage device back to the solid heat storage device for heating. The air-water heat exchanger (2) and the generator (3) are connected into a steam driving circulation loop, water in the pipeline and high-temperature air with the temperature of 300-500 ℃ are subjected to heat exchange in the air-water heat exchanger (2) to be changed into steam with the pressure of 1.6-1.8 MPa, the steam is conveyed into the generator (3) to drive the absorption refrigeration system, and the steam is conveyed back into the air-water heat exchanger (2) through the pipeline to be heated after the driving is finished. The generator (3), the absorber (6) and the solution heat exchanger (7) are connected into an absorbent circulation loop, and the dilute solution with the mass concentration of 55-59 percent from the absorber (6) is pumped by a second pump (P)2) Pressurizing, then entering a solution heat exchanger (7) for heat exchange, then entering a generator (3) for heating, introducing refrigerant vapor generated by vaporization of a dilute solution with the mass concentration of 55-59% into a condenser (4), introducing a concentrated solution with the mass concentration of 60-64% in the generator (3) into the solution heat exchanger (7) for heat exchange, and then passing through a second throttle valve (Ex)2) After the pressure is reduced, the mixed solution enters an absorber (6), and the concentrated solution with the mass concentration of 60-64% absorbs the refrigerant vapor from the evaporator (5) in the absorber (6) to become a dilute solution with the mass concentration of 55-59%. The generator (3), the condenser (4), the evaporator (5), the absorber (6) and the solution heat exchanger (7) are connected into a refrigerant circulation loop, refrigerant vapor from the generator (3) is condensed in the condenser (4) to form saturated water, and the saturated water passes through a first throttle valve (Ex)1) The pressure is reduced, the saturated water is converted into refrigerant wet steam, and the refrigerant wet steam is in the evaporator (5)Absorbing heat and vaporizing the heat to form refrigerant vapor, enabling the refrigerant vapor to enter an absorber (6) and be absorbed by concentrated solution with the mass concentration of 60-64%, and circulating in the way. The condenser (4) and the evaporator (5) respectively form a solution circulation loop with the air conditioner tail end (8) and the ground heat exchanger (9). In the cold supply season, the evaporator (5) generates a refrigeration effect, and cold water passes through a fourth pump (P) through a pipeline4) The heat is transmitted to the tail end (8) of the air conditioner, and then transmitted back to the evaporator (5) through a pipeline after heat exchange is finished, and the cooling water transmits the heat released by the absorber (6) and the condenser (4) through a third pump (P) through a pipeline3) The heat is transferred to a ground heat exchanger (9) and then transferred back to the absorber (6) and the condenser (4) for continuous heat absorption after the heat exchange is finished; in the season of heat supply, the absorber (6) and the condenser (4) generate heating effect, and hot water passes through a fourth pump (P) through a pipeline4) Is conveyed to the tail end (8) of the air conditioner, is conveyed back to the absorber (6) and the condenser (4) through a pipeline after heat exchange is finished, and the evaporator (5) passes through a third pump (P) through a pipeline3) Is connected with a ground heat exchanger (9) to absorb the soil heat.
The solid heat storage and double-effect absorption refrigeration combined cold and hot double supply system runs all day long. In the night electricity utilization low-peak time period, the solid heat storage device (1) is connected with a high-voltage line to store heat by utilizing the valley electricity, the electric energy is converted into heat energy, and the heat energy is stored in the solid heat storage device (1). And stopping heat storage in the non-valley electricity price time period, and driving the generator (3) by utilizing the stored heat energy. When heat is released in daytime and at night, the air heated by the solid heat storage device (1) heats water through the air-water heat exchanger (2) to generate steam, and the steam drives the generator (3) to enable the steam type absorption system to generate a refrigerating or heating effect.
Furthermore, the system can realize cold and hot dual supply by combining a steam type absorption system with the ground heat exchanger (9). During cooling, the first valve (V) is opened1) A second valve (V)2) And a fifth valve (V)5) And a sixth valve (V)6) Closing the third valve (V)3) And a fourth valve (V)4) Seventh valve (V)7) Eighth valve (V)8) The evaporator (5) produces a refrigeration effect to provide cold water to the air conditioning terminal (8), and the heat released by the absorber (6) and the condenser (4) passes throughThe ground heat exchanger (9) is scattered into the soil; during heating, the third valve (V) is opened3) And a fourth valve (V)4) Seventh valve (V)7) Eighth valve (V)8) Closing the first valve (V)1) A second valve (V)2) And a fifth valve (V)5) And a sixth valve (V)6) The condenser (4) and the absorber (6) release heat to provide hot water for the air conditioner tail end (8), and the evaporator (5) absorbs soil heat through the ground heat exchanger (9).
The invention is also characterized in that: provides a cold and hot double supply system integrating solid heat storage and double-effect absorption refrigeration which operates all day long. On one hand, the solid heat storage technology is utilized, so that the heat storage capacity is strong, the cleaning is realized, no pollution is caused, and the adjustment of the peak-valley balance of the power grid is facilitated; on the other hand, the system combines the ground heat exchanger, increases the utilization of renewable energy sources, and is energy-saving and environment-friendly.
Advantageous effects
The invention provides a solid heat storage and steam type absorption combined cold and heat double supply system. The solid heat storage technology overcomes the pollution problem caused by the traditional boiler as a heat source, is clean and pollution-free, occupies small area, has high heat storage capacity which can exceed 85 percent, and has stable output temperature. Particularly, the invention utilizes off-peak electricity to store heat, can improve the electricity load, promote the peak-valley regulation of the power grid, ensure the safety of the power grid, reduce the electricity price cost born by users and has obvious economic benefit and social benefit. In addition, the system is combined with a ground source heat pump to increase
And the renewable energy is utilized, so that the energy is saved, the environment is protected, and no pollution is caused.
Drawings
FIG. 1 shows that the solid heat storage and steam type absorption combined cold and heat double supply provided by the invention
The piping components of the system are connected together.
In the figure: the parts are numbered and named as follows:
1-solid thermal storage device; 2-air-water heat exchanger; 3-a generator; 4-a condenser; 5-an evaporator; 6-an absorber; 7-solution heat exchanger; 8, air conditioner terminal; 9-buried pipe heat exchanger
Detailed Description
The invention is further described with reference to the following figures.
Magnesia brick is used as solid heat storage material, and lithium bromide-water solution is used as absorption type refrigerating working medium pair. When the electricity is used at night in the low peak time, the solid heat storage device (1) is connected with a high-voltage wire to store heat by utilizing the off-peak electricity, the electric energy is converted into heat energy, and the heat energy is stored in the heat storage body. Air flows through the heat storage body to be heated, the air-water heat exchanger (2) heats water to generate steam, and the steam is used for driving the generator (3) to enable the steam type absorption system to generate refrigeration or refrigeration effect. In the off-peak electricity time period, the solid heat storage device (1) stops working, and heat is supplied only by using the heat stored in the heat storage body. In the cold supply season, the first valve (V) is opened1) A second valve (V)2) And a fifth valve (V)5) And a sixth valve (V)6) Closing the third valve (V)3) And a fourth valve (V)4) Seventh valve (V)7) Eighth valve (V)8) The evaporator (5) generates a refrigeration effect to provide cold water for the air conditioner terminal (8), and the heat emitted by the absorber (6) and the condenser (4) is dissipated to the soil through the ground heat exchanger (9); in the season of heating, the third valve (V) is opened3) And a fourth valve (V)4) Seventh valve (V)7) Eighth valve (V)8) Closing the first valve (V)1) A second valve (V)2) And a fifth valve (V)5) And a sixth valve (V)6) The condenser (4) provides hot water for the air conditioner tail end (8), and the evaporator (5) absorbs soil heat through the ground heat exchanger (9).

Claims (2)

1. A solid heat storage and steam type absorption combined cold and heat double supply system is characterized by comprising: the system comprises a solid heat storage device (1), an air-water heat exchanger (2), a generator (3), a condenser (4), an evaporator (5), an absorber (6), a solution heat exchanger (7), an air conditioner tail end (8) and a ground heat exchanger (9); first throttle valve (Ex)1) Between the condenser (4) and the evaporator (5), the flow direction is from the condenser (4) to the evaporator (5), and the refrigerant water passes through a first throttle valve (Ex)1) Take place ofA throttling process; second throttle valve (Ex)2) Is positioned between the absorber (6) and the solution heat exchanger (7), the flow direction is from the solution heat exchanger (7) to the absorber (6), and the solution passes through a second throttle valve (Ex)2) A throttling process occurs; first valve (V)1) And a second valve (V)2) Between the evaporator (5) and the air-conditioning end (8), is a stop valve, a first valve (V)1) A second valve (V) for controlling the flow of cold water from the evaporator (5) to the air-conditioning terminal (8)2) Is responsible for controlling the return water flowing from the air conditioner tail end (8) to the evaporator (5); third valve (V)3) And a fourth valve (V)4) Between the condenser (4) and the air-conditioning terminal (8), is a stop valve, a third valve (V)3) Is responsible for controlling the flow of hot water from the condenser (4) to the air conditioning terminal (8), a fourth valve (V)4) Is responsible for controlling the return water flowing from the air conditioner tail end (8) to the condenser (4); fifth valve (V)5) And a sixth valve (V)6) A fifth valve (V) which is a stop valve and is positioned between the condenser (4) and the ground heat exchanger (9)5) Is responsible for controlling the return water of the cooling water flowing from the ground heat exchanger (9) to the condenser (4), and a sixth valve (V)6) Is responsible for controlling the cooling water flowing from the condenser (4) to the ground heat exchanger (9); seventh valve (V)7) And an eighth valve (V)8) A seventh valve (V) which is a stop valve and is positioned between the evaporator (5) and the ground heat exchanger (9)7) Is responsible for controlling the cold water flowing from the evaporator (5) to the ground heat exchanger (9), an eighth valve (V)8) The system is responsible for controlling the return water of the ground heat exchanger (9) from the flow direction to the evaporator (5); pump number one (P)1) A second pump (P) arranged between the air-water heat exchanger (2) and the generator (3)2) Between the absorber (6) and the solution heat exchanger (7), a third pump (P)3) A fourth pump (P) is positioned between the condenser (4) and the ground heat exchanger (9)4) Is positioned between the evaporator (5) and the air conditioner tail end (8); the solid heat storage device (1) and the air-water heat exchanger (2) are connected into an air circulation loop, the solid heat storage device (1) is connected with a high-voltage wire to store heat by utilizing valley electricity, the air flows through the solid heat storage device (1) to be heated, the high-temperature air at 300-500 ℃ is conveyed to the air-water heat exchanger (2) through a pipeline to exchange heat, and after the heat exchange is finished, the high-temperature air passes through the pipeline and passes through a first pump (P)1) Conveying the solid heat storage device back to the solid heat storage device for heating; the air-water heat exchanger (2) and the generator (3) are connected into a steam driving circulation loop, water in a pipeline and high-temperature air with the temperature of 300-500 ℃ are subjected to heat exchange in the air-water heat exchanger (2) to be changed into steam with the pressure of 1.6-1.8 MPa, the steam is conveyed into the generator (3) to drive the absorption refrigeration system, and the steam is conveyed back into the air-water heat exchanger (2) through the pipeline to be heated after the driving is finished; the generator (3), the absorber (6) and the solution heat exchanger (7) are connected into an absorbent circulation loop, and the dilute solution with the mass concentration of 55-59 percent from the absorber (6) is pumped by a second pump (P)2) Pressurizing, then entering a solution heat exchanger (7) for heat exchange, then entering a generator (3) for heating, introducing refrigerant vapor generated by vaporization of a dilute solution with the mass concentration of 55-59% into a condenser (4), introducing a concentrated solution with the mass concentration of 60-64% in the generator (3) into the solution heat exchanger (7) for heat exchange, and then passing through a second throttle valve (Ex)2) After the pressure is reduced, the mixed solution enters an absorber (6), and the concentrated solution with the mass concentration of 60-64% absorbs the refrigerant vapor from the evaporator (5) in the absorber (6) to become a dilute solution with the mass concentration of 55-59%; the generator (3), the condenser (4), the evaporator (5), the absorber (6) and the solution heat exchanger (7) are connected into a refrigerant circulation loop, refrigerant vapor from the generator (3) is condensed in the condenser (4) to form saturated water, and the saturated water passes through a first throttle valve (Ex)1) Reducing the pressure, converting saturated water into refrigerant wet steam, performing heat absorption and vaporization on the refrigerant wet steam in the evaporator (5) to form refrigerant steam, enabling the refrigerant steam to enter the absorber (6), absorbing the refrigerant steam by a concentrated solution with the mass concentration of 60-64%, and circulating in the way; the condenser (4) and the evaporator (5) respectively form a solution circulation loop with the air conditioner tail end (8) and the ground heat exchanger (9); in the cold supply season, the evaporator (5) generates a refrigeration effect, and cold water passes through a fourth pump (P) through a pipeline4) The heat is transmitted to the tail end (8) of the air conditioner, and then transmitted back to the evaporator (5) through a pipeline after heat exchange is finished, and the cooling water transmits the heat released by the absorber (6) and the condenser (4) through a third pump (P) through a pipeline3) The heat is transferred to a ground heat exchanger (9) and then transferred back to the absorber (6) and the condenser (4) for continuous heat absorption after the heat exchange is finished;in the season of heat supply, the absorber (6) and the condenser (4) generate heating effect, and hot water passes through a fourth pump (P) through a pipeline4) Is conveyed to the tail end (8) of the air conditioner, is conveyed back to the absorber (6) and the condenser (4) through a pipeline after heat exchange is finished, and the evaporator (5) passes through a third pump (P) through a pipeline3) Is connected with a ground heat exchanger (9) to absorb the soil heat.
2. The system of claim 1, wherein: when the electricity is used at night in the low peak time, the solid heat storage device (1) is connected with a high-voltage wire to store heat by using the off-peak electricity, the electric energy is converted into heat energy, and the heat energy is stored in the heat storage body; air flows through the heat storage body to be heated, and is heated by the air-water heat exchanger (2) to generate steam, and the steam is used for the generator (3) to enable the steam type absorption system to generate refrigeration or refrigeration effect; in the off-peak electricity time period, the solid heat storage device (1) stops working, and heat is supplied only by using the heat stored by the heat accumulator; in the cold supply season, the first valve (V) is opened1) A second valve (V)2) And a fifth valve (V)5) And a sixth valve (V)6) Closing the third valve (V)3) And a fourth valve (V)4) Seventh valve (V)7) Eighth valve (V)8) The evaporator (5) generates a refrigeration effect to provide cold water for the air conditioner terminal (8), and the heat emitted by the absorber (6) and the condenser (4) is dissipated to the soil through the ground heat exchanger (9); in the season of heating, the third valve (V) is opened3) And a fourth valve (V)4) Seventh valve (V)7) Eighth valve (V)8) Closing the first valve (V)1) A second valve (V)2) And a fifth valve (V)5) And a sixth valve (V)6) The condenser (4) and the absorber (6) release heat to provide hot water for the air conditioner tail end (8), and the evaporator (5) absorbs soil heat through the ground heat exchanger (9).
CN202011489253.1A 2020-12-17 2020-12-17 Solid heat storage and steam type absorption combined cold and hot dual-supply system Pending CN112833482A (en)

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AU2012249235B1 (en) * 2012-11-14 2013-06-20 Mesh Corporation Pty Ltd District Cooling System and Thermal Energy Storage Tank System Layout
CN103604248A (en) * 2013-11-12 2014-02-26 清华大学 Three-purpose ground source absorption heat pump system and operation method
CN104374025A (en) * 2014-11-17 2015-02-25 北京工业大学 Three-phase energy storage method of solar air conditioner
CN104864632A (en) * 2015-06-12 2015-08-26 北京燃气能源发展有限公司 Tri-generation supply and ground source heat pump coupling energy supply system
CN108534213A (en) * 2018-05-11 2018-09-14 宋世海 A kind of low ebb electric heat storage composite adsorption type air source heat pump circulating heating system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2012249235B1 (en) * 2012-11-14 2013-06-20 Mesh Corporation Pty Ltd District Cooling System and Thermal Energy Storage Tank System Layout
CN103604248A (en) * 2013-11-12 2014-02-26 清华大学 Three-purpose ground source absorption heat pump system and operation method
CN104374025A (en) * 2014-11-17 2015-02-25 北京工业大学 Three-phase energy storage method of solar air conditioner
CN104864632A (en) * 2015-06-12 2015-08-26 北京燃气能源发展有限公司 Tri-generation supply and ground source heat pump coupling energy supply system
CN108534213A (en) * 2018-05-11 2018-09-14 宋世海 A kind of low ebb electric heat storage composite adsorption type air source heat pump circulating heating system

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