[go: up one dir, main page]

CN111219906B - Regional distributed energy system and lake water source heat pump combined energy supply system - Google Patents

Regional distributed energy system and lake water source heat pump combined energy supply system Download PDF

Info

Publication number
CN111219906B
CN111219906B CN202010137000.1A CN202010137000A CN111219906B CN 111219906 B CN111219906 B CN 111219906B CN 202010137000 A CN202010137000 A CN 202010137000A CN 111219906 B CN111219906 B CN 111219906B
Authority
CN
China
Prior art keywords
ice
building
heat exchanger
cold
water
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.)
Active
Application number
CN202010137000.1A
Other languages
Chinese (zh)
Other versions
CN111219906A (en
Inventor
卢军
丁承松
黄书晨
任军
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.)
Chongqing University
Original Assignee
Chongqing University
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 Chongqing University filed Critical Chongqing University
Priority to CN202010137000.1A priority Critical patent/CN111219906B/en
Publication of CN111219906A publication Critical patent/CN111219906A/en
Application granted granted Critical
Publication of CN111219906B publication Critical patent/CN111219906B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B15/00Sorption machines, plants or systems, operating continuously, e.g. absorption type
    • F25B15/02Sorption machines, plants or systems, operating continuously, e.g. absorption type without inert gas
    • F25B15/06Sorption machines, plants or systems, operating continuously, e.g. absorption type without inert gas the refrigerant being water vapour evaporated from a salt solution, e.g. lithium bromide
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24DDOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D15/00Other domestic- or space-heating systems
    • F24D15/04Other domestic- or space-heating systems using heat pumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B30/00Heat pumps
    • F25B30/06Heat pumps characterised by the source of low potential heat
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25DREFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D3/00Devices using other cold materials; Devices using cold-storage bodies
    • F25D3/02Devices using other cold materials; Devices using cold-storage bodies using ice, e.g. ice-boxes
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28DHEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D20/00Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
    • F28D20/02Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using latent heat
    • F28D20/021Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using latent heat the latent heat storage material and the heat-exchanging means being enclosed in one container
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28DHEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D9/00Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/12Hot water central heating systems using heat pumps
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/14Thermal energy storage

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Materials Engineering (AREA)
  • Sorption Type Refrigeration Machines (AREA)

Abstract

本发明涉及暖通领域,具体涉及一种区域分布式能源系统与湖水源热泵复合的供能系统,包括内燃机组、溴化锂吸收式制冷机组、湖水源热泵机组和建筑供冷设备;内燃机组用于发电为用电终端供电;溴化锂吸收式制冷机组用于利用内燃机组的余热制取冷水;湖水源热泵机组用于将建筑供冷设备回水制冷后提供给建筑供冷设备。本申请通过溴化锂吸收式制冷机组吸收内燃机组发电过程中产生热能制冷为建筑提供冷源,实现了能源的再利用,在冷源不能满足建筑需求时,湖水源热泵机组利用地表内湖水,通过湖水源热泵机组实现热交换,从而实现能源的再生利用。最后通过内燃机组发的电对建筑供冷设备提供电能,节约了电能的消耗。

The present invention relates to the field of HVAC, and specifically to an energy supply system of a regional distributed energy system and a lake water source heat pump, including an internal combustion engine unit, a lithium bromide absorption refrigeration unit, a lake water source heat pump unit and building cooling equipment; the internal combustion engine unit is used to generate electricity to supply power to the power terminal; the lithium bromide absorption refrigeration unit is used to use the waste heat of the internal combustion engine unit to produce cold water; the lake water source heat pump unit is used to provide the building cooling equipment with return water after refrigeration. The present application realizes the reuse of energy by using the lithium bromide absorption refrigeration unit to absorb the heat energy generated during the power generation process of the internal combustion engine unit to provide a cold source for the building. When the cold source cannot meet the needs of the building, the lake water source heat pump unit uses the lake water on the surface to achieve heat exchange through the lake water source heat pump unit, thereby realizing the recycling of energy. Finally, the electricity generated by the internal combustion engine unit is used to provide electric energy to the building cooling equipment, saving the consumption of electric energy.

Description

Regional distributed energy system and lake water source heat pump combined energy supply system
Technical Field
The invention relates to the field of heating and ventilation, in particular to an energy supply system combining a regional distributed energy system and a lake water source heat pump.
Background
With the rapid development of market economy in recent years, the urban development process is rapid, the urban construction scale is continuously enlarged, various industrial parks, large building groups and small towns are continuously emerging, and the total building area is increased year by year. Meanwhile, the energy consumption per building area has a tendency of rigidity rise along with the improvement of the living standard and the comfort of people. Building energy consumption is the energy consumption necessary to meet building functions and building comfort services.
Due to the ever-increasing demands and the regulation of urban energy structures, the state of energy supply tends to be intense throughout the country, and energy supply has failed to meet the demands of economic and environmental sustainable development. The power load increases continuously, particularly the peak power shortage and peak-valley difference increase in summer, a plurality of cities have to be pulled out to limit electricity every summer, and natural gas shortage and price raising occur in a plurality of cities in the whole country, so that energy sources become bottlenecks for restricting the further development of economy.
The air conditioner and heating load meeting the cooling and heating comfort requirements of the building are the highest in proportion and the highest in energy saving potential in the building. In the prior art, a large amount of electric energy is consumed by building air conditioning, hot water and other systems, the electric energy consumption is large, the energy efficiency ratio is low, and the environment is not protected and energy is saved.
Disclosure of Invention
The invention provides an energy supply system combining a regional distributed energy system and a lake water source heat pump, aiming at the problem that the current building is cold-supplying and consumes more electric energy.
In order to achieve the above object, the present invention provides the following technical solutions:
An energy supply system combining a regional distributed energy system and a lake water source heat pump,
The system comprises an internal combustion engine unit, a lithium bromide absorption refrigerating unit, a lake water source heat pump unit and building cooling equipment, wherein the internal combustion engine unit is used for generating electricity to supply power for a power utilization terminal, the lithium bromide absorption refrigerating unit is used for absorbing the residual heat of the internal combustion engine unit to supply water for cooling and then supplying the cooled water to the building cooling equipment, and the lake water source heat pump unit is used for refrigerating backwater of the building cooling equipment and then supplying the backwater of the building cooling equipment to the building cooling equipment;
The heating flue gas inlet of the lithium bromide absorption refrigerating unit is connected with the heating flue gas outlet of the internal combustion engine unit, the cold water outlet of the lithium bromide absorption refrigerating unit is connected with the cold water inlet of the building cold supply equipment, backwater of the building cold supply equipment flows out and then is divided into two branches, one branch flows into the backwater inlet of the lithium bromide absorption refrigerating unit, the other branch flows into the backwater inlet of the lake water source heat pump unit, and the cold water outlet of the lake water source heat pump unit is combined with the cold water outlet of the lithium bromide absorption refrigerating unit and then is communicated with the cold water inlet of the building cold supply equipment.
The energy supply system comprises a building cooling device, a building cooling water supply device, an ice cold storage device, a double-working-condition water chilling unit, an ice cold storage device and a double-working-condition water chilling unit, wherein the double-working-condition water chilling unit is used for refrigerating backwater of the building cooling device and then providing a cold source for the building cooling device, the double-working-condition water chilling unit is also used for preparing fluid ice and storing the fluid ice in the ice cold storage device, the ice cold storage device is used for storing the fluid ice and releasing cold of the fluid ice to provide the cold source for the building cooling device, a backwater inlet of the double-working-condition water chilling unit is communicated with a backwater outlet of the building cooling device, a cold water outlet of the double-working-condition water chilling unit is divided into two branches, one branch is connected with the cold water inlet of the building cooling device, the other branch is connected with the cold water inlet of the ice cold storage device, and a cold water outlet of the ice cold storage device is communicated with the backwater inlet of the double-working-condition water chilling unit. The peak shifting and valley filling are realized through the double-working-condition water chilling unit and the ice cold storage device, so that the flexibility of an energy supply system is further improved, and the energy utilization efficiency is greatly improved.
Preferably, the energy supply system further comprises an ice-making plate heat exchanger, wherein the ice-making plate heat exchanger is used for refrigerating backwater of the building cooling equipment through the double-working-condition water chilling unit, a backwater inlet of the ice-making plate heat exchanger is communicated with a backwater outlet of the building cooling equipment, a backwater outlet of the ice-making plate heat exchanger is communicated with an inlet of the double-working-condition water chilling unit, a cold water inlet of the ice-making plate heat exchanger is communicated with a cold water outlet of the double-working-condition water chilling unit, and a cold water outlet of the ice-making plate heat exchanger is communicated with a cold water inlet of the building cooling equipment. And cooling the backwater of the user side of the building by using the cold energy generated by the double-working-condition refrigerating unit through the ice-making plate type heat exchanger.
Preferably, the energy supply system further comprises a first ice melting plate heat exchanger, a first cold water inlet of the first ice melting plate heat exchanger is communicated with a cold water outlet of the ice storage device, a second cold water inlet of the first ice melting plate heat exchanger is communicated with a cold water outlet of the ice making plate heat exchanger, a cold water outlet of the first ice melting plate heat exchanger is communicated with a cold water inlet of the building cold supply device, and the first ice melting plate heat exchanger is used for further refrigerating cold water refrigerated by the ice making plate heat exchanger by utilizing fluid ice stored in the ice storage device. In order to further reduce the temperature of the cold source and reduce the energy consumption of the system, the first ice-melting plate type heat exchanger is added, and cold water refrigerated by the ice-making plate type heat exchanger is further refrigerated, so that the requirements of building cooling equipment are met.
Preferably, the energy supply system further comprises a second ice-melting plate heat exchanger, the second ice-melting plate heat exchanger is used for utilizing the ice cold accumulation device to re-cool outlet water of the lithium bromide absorption refrigerating unit and the lake water source heat pump unit and then providing the water for the building cooling equipment, a first cold water inlet of the second ice-melting plate heat exchanger is communicated with a cold water outlet of the ice cold accumulation device, a second cold water inlet of the second ice-melting plate heat exchanger is communicated with a cold water outlet of the lithium bromide absorption refrigerating unit, and a cold water outlet of the lithium bromide absorption refrigerating unit is communicated with a cold water inlet of the building cooling equipment, so that energy is further saved.
Preferably, the energy supply system further comprises a waste heat boiler, a smoke-water heat exchanger and building heat supply equipment, wherein a heating smoke inlet of the waste heat boiler is communicated with a heating smoke outlet of the internal combustion unit, a backwater inlet of the waste heat boiler is communicated with a backwater outlet of the building heat supply equipment, a hot water outlet of the waste heat boiler is communicated with a hot water inlet of the building heat supply equipment, a heating smoke outlet of the waste heat boiler is communicated with a heating smoke inlet of the smoke-water heat exchanger, a hot water pipe of the lake water source heat pump unit is communicated with a hot water inlet of the building heat supply equipment after passing through the smoke-water heat exchanger, the waste heat boiler is used for absorbing waste heat of the internal combustion unit to produce hot water and then providing the hot water to the building heat supply equipment, and the smoke-water heat exchanger is used for absorbing waste heat of the waste heat boiler to reheat water discharged from the lake water source heat pump unit and then provide the hot water to the building heat supply equipment. When in winter, the waste heat generated by the internal combustion engine unit is transmitted into the waste heat boiler to heat water and then is supplied to the building heat supply equipment, so that heating of a building is realized, and energy sources are saved.
Preferably, the energy supply system further comprises a phase change heat storage device, the phase change heat storage device is used for storing waste heat absorbed by the outlet of the smoke-water heat exchanger in the phase change heat storage water tank, the stored heat energy is gradually released according to heat requirements in a heat consumption peak period or an electricity consumption peak period, a heating smoke inlet of the phase change heat storage device is communicated with a heating smoke outlet of the smoke-water heat exchanger, and a heating smoke outlet of the smoke-water heat exchanger is communicated with a hot water inlet of the building heat supply equipment. The waste heat of the smoke-water heat exchanger is utilized again through the phase change heat storage device, so that the heat is utilized to the greatest extent.
Preferably, the energy supply system further comprises a gas boiler, a hot water outlet of the gas boiler is communicated with a hot water inlet of the building heat supply device, a return water inlet of the gas boiler is communicated with a return water outlet of the building heat supply device, and the gas boiler is used for producing hot water and supplying the hot water to the building heat supply device. When the heat energy provided by the phase-change heat storage device of the waste heat boiler and the lake water source heat pump unit can not meet the requirements of building heating equipment, the heat energy is provided for the building through the gas-fired boiler.
Compared with the prior art, the application has the beneficial effects that the lithium bromide absorption refrigerating unit absorbs the heat energy generated in the power generation process of the internal combustion unit to prepare cold water, so that the cold energy is provided for the building cold supply equipment, the reutilization of energy is realized, and then when the cold energy generated by the lithium bromide absorption refrigerating unit can not meet the building requirement, the building cold supply equipment realizes heat exchange with the water in the ground surface through the lake water source heat pump unit, so that the reutilization of energy is realized. The internal combustion unit, the lithium bromide absorption refrigerating unit and the lake water source heat pump unit are combined to operate for cooling, so that the consumption of electric energy is saved.
Drawings
FIG. 1 is a schematic diagram of a regional distributed energy system and lake water source heat pump combined energy supply system;
fig. 2 is a schematic diagram of a structure of a regional distributed energy system and lake water source heat pump combined energy supply system in summer operation;
fig. 3 is a schematic diagram of a structure of a regional distributed energy system and lake water source heat pump combined energy supply system running in winter.
The figure shows a 1-internal combustion unit, a 2-electricity utilization terminal, a 3-lithium bromide absorption refrigerating unit, a 4-lake water source heat pump unit, a 5-double-station water chilling unit, a 6-ice cold storage device, a 7-ice making plate heat exchanger, an 8-first ice melting plate heat exchanger, a 9-second ice melting plate heat exchanger, a 10-smoke-water heat exchanger, an 11-waste heat boiler, a 12-gas boiler, a 13-building cooling device, a 14-building heat supply device and a 15-phase change heat storage device.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
In the description of the present invention, it should be understood that the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
In the description of the present invention, unless otherwise specified and defined, it should be noted that the terms "mounted," "connected," and "coupled" are to be construed broadly, and may be, for example, mechanical or electrical, or may be in communication with each other between two elements, directly or indirectly through intermediaries, as would be understood by those skilled in the art, in view of the specific meaning of the terms described above.
As shown in fig. 1, the application provides a regional distributed energy system and lake water source heat pump combined energy supply system, which comprises an internal combustion engine unit 1, a lithium bromide absorption refrigerating unit 3, a lake water source heat pump unit 4, building cooling equipment 13, a double-condition water chilling unit 5, a waste heat boiler 11 and a smoke-water heat exchanger 10.
The internal combustion unit 1 is a power generation device and is used for running a lithium bromide absorption refrigerating unit 3, a lake water source heat pump unit 4, building refrigerating equipment and building heating equipment by acting to generate power. The internal combustion unit compresses air through the compressor turbine, high-pressure air is mixed and combusted with natural gas in the combustion chamber, so that the flue gas expands to do work, the power turbine is pushed to rotate to do work to drive the generator to generate electricity, the generated electric energy is used for supplying power to the electricity utilization terminal, and the discharged high-temperature flue gas is transmitted to next-stage heat utilization equipment for use.
The waste heat boiler 11 utilizes the waste heat discharged by the internal combustion engine set 1 to produce heat and meets the heat requirement of the building heat supply equipment 14. The working principle of the waste heat boiler is that the fuel generates high-temperature smoke to release heat after combustion, the high-temperature smoke enters the hearth, then enters the waste heat recovery device of the front smoke box, then enters the smoke tube, and finally enters the waste heat recovery device in the flue of the rear smoke box to produce hot water or steam.
The gas boiler 12 is used for producing heat, carrying out peak shaving for heating in winter and guaranteeing building heating. The gas boiler has the working principle that after the gas boiler is powered on, the control system starts to detect the water level and the shell temperature of the boiler, the detection is normal, the boiler starts to start the burner to heat water, when the water temperature reaches the set temperature, the burner stops heating, meanwhile, the water temperature of the boiler reaches the pump-on temperature, the boiler starts the hot water circulating pump, hot water circulates in the heating pipeline system, and the heating purpose is achieved through heat dissipation of a radiator (such as a radiator, a fan coil water heating air conditioner, a central air conditioning unit and the like).
The lithium bromide absorption refrigerating unit 3 utilizes the waste heat generated by the power generation of the internal combustion unit 1 to prepare cold energy, thereby meeting the cold requirement of building refrigerating equipment. The working principle of the lithium bromide absorption refrigerator is that water is used as a refrigerant and lithium bromide is used as an absorbent. The heat energy discharged by the internal combustion engine unit is used as power, when the lithium bromide aqueous solution is heated by high-temperature flue gas in the generator, the water in the solution is continuously vaporized, the concentration of the lithium bromide aqueous solution in the generator is continuously increased along with the continuous vaporization of the water and enters the absorber, the water vapor enters the condenser and is cooled by cooling water in the condenser and then is condensed into high-pressure low-temperature liquid water, when the water in the condenser enters the vapor generator through the throttle valve, the water is rapidly expanded and vaporized, and the heat of the refrigerant water in the evaporator is greatly absorbed in the vaporization process, so that the cooling and refrigerating purposes are achieved.
The lake water source heat pump unit 4 uses surface water to exchange cold and heat as a cold source of a water source heat pump, and takes heat in the lake water out in winter to supply indoor heating, wherein the lake water is the heat source, and the lake water is the cold source when the lake water is discharged from summer and released into the surface water. In summer, the heat pump is combined with the double-working-condition water chilling unit 5 and the lithium bromide absorption refrigerating unit 3 to generate cold energy to meet the cold requirement of the building cold supply equipment 13, and in winter, the heat pump is combined with the waste heat boiler 11 and the gas boiler 12 to produce heat to meet the building heat requirement. The working principle of the lake water source heat pump unit is that the lake water is used as a cold source by utilizing low-grade heat energy resources formed by solar energy absorbed by lake water, the heat pump principle is adopted, the heat in a building is transferred into the lake water by the lake water source heat pump unit in summer, so that the cooling of the building is realized, and in winter, the heat is extracted from the lake water, so that the heat supply of the building is realized. Low grade heat energy resources are heat energy which is difficult to utilize.
The double-working-condition water chilling unit 5 is used for preparing water into flow-state ice to be stored in the ice storage device 6 in the low-valley period of the cold energy demand, and releasing the cold energy in the ice storage device 6 to meet the cold energy demand of a building in the peak period of the cold energy demand, so that the double-working-condition water chilling unit has the effect of peak shifting and valley filling. The working principle of the dual-working-condition water chilling unit is that during daytime, glycol liquid cooled by a main machine flows through an ice-making plate heat exchanger, cold energy is conveyed to the tail end of an air conditioner, the temperature of the glycol liquid before entering the ice-making plate heat exchanger is 3.5 ℃, the temperature of a secondary refrigerant rises to 10.5 ℃ after the glycol liquid passes through the ice-making plate heat exchanger, the secondary refrigerant flows back to a refrigerating unit through a refrigerating pump, at night, 20% concentration of the glycol liquid of the secondary refrigerant flows through the main machine to be cooled, and then the glycol liquid is conveyed to an ice storage device to cool water in the ice storage device, the temperature is generally reduced to about-3 ℃, and meanwhile, the glycol liquid is conveyed out from a pipeline at the other side of the ice storage device and flows back to the main machine through the refrigerating pump, so that the low-temperature glycol circularly cools the water of the ice storage device.
And the ice-making plate heat exchanger 7 is used for cooling the backwater of the user side of the building by utilizing the cold energy generated by the double-working-condition refrigerating unit. The working principle of the ice-making plate heat exchanger is that the temperature of the glycol liquid cooled by the main machine flows through the ice-making plate heat exchanger, the temperature of the glycol liquid before entering the ice-making plate heat exchanger is about 3.5 ℃, the glycol liquid is heated to about 10.5 ℃ after heat exchange with backwater of building cooling equipment, and the backwater is cooled for building cooling.
The ice cold storage device has the working principle that fluid ice prepared by a double-working-condition water chilling unit is stored in an ice storage tank, 0 ℃ water in the ice storage tank is conveyed into an ice melting plate type heat exchanger to be subjected to heat exchange during daytime peak load, high temperature water after heat exchange flows back to an ice storage tank and is sprinkled on the ice to be directly subjected to ice melting, so that the water outlet temperature can be kept at about 3.5 ℃ all the time as long as ice is arranged in the tank, and 5-7 ℃ cold water is provided for the other side of the ice melting plate type heat exchanger to be used for cooling a building.
The first ice melting plate heat exchanger 8 is used for cooling the water discharged from the ice making plate heat exchanger 7 by utilizing the cold energy released by the ice storage device 6, so that the water reaches a set value, and the energy consumption of the system is reduced.
And the second ice melting plate type heat exchanger 9 is used for utilizing the cold energy released by the ice cold accumulation device 6 to re-cool the outlet water at the side of the air conditioner unit, so that the outlet water reaches a set value, and the energy consumption of the system is reduced.
The ice melting plate heat exchanger has the working principle that water at 0 ℃ in the ice cold storage device 6 is conveyed into the ice melting plate heat exchanger for heat exchange, and cold water at 5-7 ℃ is provided for cooling a building on the other side of the ice melting plate heat exchanger.
The smoke-water heat exchanger 10 is used for reheating water at the air conditioner side outlet of the lake water source heat pump unit 4 by utilizing the waste heat at the outlet of the waste heat boiler 11 to enable the water to reach a set value, and improving the heat supply energy efficiency of the lake water source heat pump system. The working principle of the smoke-water heat exchanger is that one side of the heat exchange surface passes through smoke, and the other side passes through water to be heated, so that the water is heated, the temperature of the water is increased, the smoke discharging temperature of the smoke is reduced, and the utilization degree of the smoke residual heat is improved.
The phase-change heat storage device 15 is used for storing the surplus heat at the outlet of the smoke-water heat exchanger 10 in the phase-change heat storage water tank, and gradually releasing the stored heat energy according to the heat requirement of the building in the heat utilization peak period or the electricity utilization peak period. The working principle of the phase-change heat storage device is that the heat energy provided by a heat source is stored in a phase-change heat storage water tank, and the stored heat energy is gradually released according to the heat demand of a user in the heat consumption peak period or the electricity consumption peak period to produce hot water to supply heat to a building.
The building cooling device 13 performs heat exchange between cold water produced by the air conditioning unit and air in a building indoor room to cool the air in the indoor room, thereby achieving the purpose of cooling.
The internal combustion unit 1, the lithium bromide absorption refrigerating unit 3, the lake water source heat pump unit 4, the double-station water chilling unit 5 and other refrigerating or heating equipment in the application can respectively comprise one or more identical equipment, and if the equipment is a plurality of pieces of equipment, the equipment is output after being connected in parallel, and the inlets are also connected in parallel. For example, the lithium bromide absorption refrigerator set 3 may be one lithium bromide absorption refrigerator or a plurality of lithium bromide absorption refrigerators, and if the lithium bromide absorption refrigerator is a plurality of lithium bromide absorption refrigerators, each lithium bromide absorption refrigerator is connected in parallel, and the output end after being connected in parallel is communicated with a building cooling device for cooling.
The energy supply system provided by the application further comprises a signal feedback network, which is used for monitoring the electricity utilization real-time conditions of the lithium bromide absorption refrigerating unit 3, the lake water source heat pump unit 4, the double-station water chilling unit 5 and the like and the building terminal equipment and controlling the transmission of electric quantity.
Fig. 2 is a schematic structural diagram of a regional distributed energy system and lake water source heat pump combined energy supply system for summer according to the present application.
The system comprises an internal combustion unit 1, a lithium bromide absorption refrigerating unit 3 and a lake water source heat pump unit 4, wherein the internal combustion unit 1 is used for generating electricity, the internal combustion unit 1 is used for generating electricity to supply power for an electricity utilization terminal 2, the lithium bromide absorption refrigerating unit 3 is used for absorbing waste heat of the internal combustion unit 1 to supply water for cooling and then supplying the cooled water to the building cooling equipment 13, and the lake water source heat pump unit 4 is used for refrigerating backwater of the building cooling equipment and then supplying the backwater of the building cooling equipment to the building cooling equipment 13.
The heating flue gas inlet of the lithium bromide absorption refrigerating unit 3 is connected with the heating flue gas outlet of the internal combustion unit 1, the cold water outlet of the lithium bromide absorption refrigerating unit 3 is connected with the cold water inlet of the building cooling equipment 13, the backwater of the building cooling equipment 13 flows out and then is divided into three branches, the first branch flows into the backwater inlet of the lithium bromide absorption refrigerating unit 3, the second branch flows into the backwater inlet of the lake water source heat pump unit 4, and the cold water outlet of the lake water source heat pump unit 4 is combined with the cold water outlet of the lithium bromide absorption refrigerating unit 3 and then is communicated with the cold water inlet of the building cooling equipment 13. The third backwater of the building cooling equipment 13 is communicated with a backwater inlet of the ice-making plate heat exchanger 7.
The cold water outlet of the double-working-condition water chilling unit 5 is divided into two branches, one branch of cold water outlet is connected with the cold water inlet of the ice making plate heat exchanger 7, and the other branch of cold water outlet is connected with the cold water inlet of the ice storage device 6. The cold water outlet of the ice storage device 6 is communicated with the first cold water inlet of the first ice melting plate heat exchanger 8 and the first cold water inlet of the second ice melting plate heat exchanger 9, and the return water outlet of the first ice melting plate heat exchanger 8 and the return water outlet of the second ice melting plate heat exchanger 9 are communicated with the return water inlet of the ice storage device 6. The second cold water inlet of the first ice-melting plate heat exchanger 8 is communicated with the cold water outlet of the ice-making plate heat exchanger 7, the second cold water inlet of the second ice-melting plate heat exchanger 9 is communicated with the cold water outlet of the lithium bromide absorption refrigerating unit 3, and the cold water outlet of the first ice-melting plate heat exchanger 8 is communicated with the cold water outlet of the second ice-melting plate heat exchanger 9 and the cold water inlet of the building cooling equipment 13. The backwater outlet of the ice cold accumulation device 6 is communicated with the backwater inlet of the double-station water chilling unit 5. And a backwater outlet of the ice-making plate heat exchanger 7 is communicated with an inlet of the double-station water chilling unit 5.
The lake water inlet of the lake water source heat pump unit 4 and the double-station water chilling unit 5 are communicated with lake water, and the lake water outlet of the lake water source heat pump unit 4 and the double-station water chilling unit 5 are also communicated with lake water.
The internal combustion engine set 1 can adopt natural gas as fuel to be input into the internal combustion engine set 1 for acting and generating power. The high-temperature flue gas from the outlet of the internal combustion unit 1 enters the lithium bromide absorption refrigerating unit 3 for refrigeration, and insufficient building cold energy is provided by the lake water source heat pump unit 4 and the double-station water chilling unit 5, so that the lake water source heat pump unit 4, the lithium bromide absorption refrigerating unit 3 and the double-station water chilling unit 5 can complementarily operate in multiple functions so as to meet the building cold requirement. During daytime, the ice cold accumulation device 6 is used for cooling preferentially, and the backwater at the user side flows through the ice making plate heat exchanger 7 for cooling and then flows through the first ice melting plate heat exchanger 8 for cooling to a set temperature for supplying to the user. The lake water source heat pump unit 4 and the lithium bromide absorption refrigerating unit 3 are started separately from the other part, and the user side backwater flows through the lake water source heat pump unit 4 and the lithium bromide absorption refrigerating unit 3 to be cooled, and then flows through the second ice melting plate heat exchanger 9 to be cooled to a set temperature for the user. At night, the low electricity price is utilized, and the double-station water chilling unit 5 is started at full load to prepare the fluid ice. The lake water source heat pump unit 4 and the lithium bromide absorption refrigerating unit 3 provide cold energy for the building, and the shortage is provided by the ice storage device 6. Meanwhile, the power utilization of the unit and the building terminal equipment is monitored in real time through a signal feedback network, and the transmission of electric quantity is controlled.
The heat of the heating flue gas of the internal combustion unit 1 and the backwater of the lithium bromide absorption refrigerating unit exchange heat in the lithium bromide absorption refrigerating unit, so that the backwater temperature of the lithium bromide absorption refrigerating unit 3 is lower than the cold water temperature of the lithium bromide absorption refrigerating unit 3. The temperature of cold water flowing out from a cold water outlet of the lake water source heat pump unit 4 is lower than that of cold water flowing into a return water inlet, and the temperature of the cold water flowing out from the return water inlet of each device is higher than that of the cold water flowing out from the cold water outlet of each device like the double-station water chilling unit 5, the ice storage device 6, the ice making plate heat exchanger 7, the first ice melting plate heat exchanger 8 and the second ice melting plate heat exchanger 9.
The flow rates of the lake water inlet and the lake water outlet of the lake water source heat pump unit 4 are set according to actual demands, and the flow rates of the lake water inlet and the lake water outlet of the double-working-condition water chilling unit 5 are also set according to actual demands. The flow rates of the lake water inlet and the lake water outlet are the same in general. The flow rate of the heating smoke flowing into the lithium bromide absorption refrigerating unit 3 by the internal combustion unit 1 is the same as that of the heating smoke sprayed out by the lithium bromide absorption refrigerating unit 3.
As shown in fig. 3, an operation schematic diagram of the regional distributed energy system and lake water source heat pump combined energy supply system provided by the application is specific to winter.
The waste heat boiler 11, the lake water source heat pump unit 4, the smoke-water heat exchanger 10 and the phase change heat storage device 15 are connected in series. The heating flue gas inlet of the waste heat boiler 11 is communicated with the heating flue gas outlet of the internal combustion engine unit 1, the backwater inlet of the waste heat boiler 11 is communicated with the backwater outlet of the building heat supply equipment 14, the hot water outlet of the waste heat boiler 11 is communicated with the hot water inlet of the building heat supply equipment 14, the heating flue gas outlet of the waste heat boiler 11 is communicated with the heating flue gas inlet of the smoke-water heat exchanger 10, and the hot water pipe of the lake water source heat pump unit 4 is communicated with the hot water inlet of the building heat supply equipment 14 after heat exchange is performed between the smoke-water heat exchanger 10 and the heating flue gas. The heating flue gas inlet of the phase change heat storage device 15 is communicated with the heating flue gas outlet of the smoke-water heat exchanger 10, and the heating flue gas outlet of the smoke-water heat exchanger 10 is communicated with the hot water inlet of the building heat supply equipment 14.
The waste heat boiler 11 is used for absorbing the waste heat of the internal combustion engine unit 1 to produce hot water and then providing the hot water for the building heat supply equipment 14, and the smoke-water heat exchanger 10 is used for absorbing the waste heat of the waste heat boiler 11 to reheat the outlet water of the lake water source heat pump unit 4 and then providing the reheated outlet water for the building heat supply equipment 14. The phase-change heat storage device 15 is used for storing the waste heat at the outlet of the smoke-water heat exchanger 10 in a phase-change heat storage water tank, and gradually releases the stored heat energy according to the heat demand in the peak period of heat utilization or the peak period of electricity utilization.
The natural gas enters the internal combustion engine set 1 to burn, expand and do work to generate power, and is used for running the set and the building terminal equipment. The high-temperature flue gas from the internal combustion unit 1 enters the waste heat boiler 11 for heating, the flue gas from the waste heat boiler 11 enters the smoke-water heat exchanger 10 for reheating the outlet water at the air conditioning side of the lake water source heat pump unit 4 to a set temperature for a user, the phase-change heat storage device 15 stores redundant heat in a phase-change heat storage water tank, and the stored heat energy is gradually released according to the building heat requirement in the heat consumption peak period or the electricity consumption peak period, so that the waste heat utilization is maximized, and the building heat requirement in winter is met. And insufficient building heat energy is supplemented by the gas boiler 12, so that stable supply of the building heat energy is ensured, and the gas boiler 12 plays a role in heating and peak shaving of the building in winter. Meanwhile, the power utilization of the unit and the building terminal equipment is monitored in real time through a signal feedback network, and the transmission of electric quantity is controlled.
The energy supply system combining the regional distributed energy system and the lake water source heat pump provided by the application can be the same equipment as the lake water source heat pump unit 4 used in winter and summer. The cold energy, cold source, i.e. cold water, heat energy and heat source, i.e. hot water, are described in the present application. The cold quantity, cold source, heat quantity and heat source are all carriers. The connection between each unit is connected through a pipeline.
The invention has the following beneficial effects:
1. The regional distributed energy system and lake water source heat pump combined energy supply system comprehensively utilizes various renewable energy technologies such as heat energy generated by power generation of the internal combustion engine unit 1, natural gas energy, lake water and the like, and plays respective advantages by combined operation of the three energy systems, ensures the stability of energy supply of the system and greatly reduces the running cost of the system.
2. The regional distributed energy system and lake water source heat pump combined energy supply system provided by the invention fully considers the night low electricity price, utilizes the ice storage device 6 to store cold at night and release cold energy at daytime, realizes peak shifting and valley filling, further improves the flexibility of the combined energy supply system, and greatly improves the energy utilization efficiency.
3. According to the energy supply system combining the regional distributed energy system with the lake water source heat pump, the internal combustion engine unit is used for realizing high-temperature section power generation, medium-temperature section refrigeration or heating and low-temperature section waste heat reutilization, so that the energy is utilized step by step for multiple times, the performance efficiency of the whole internal combustion engine unit is further improved, and the cascade utilization of energy is realized.
4. According to the energy supply system combining the regional distributed energy system and the lake water source heat pump, provided by the invention, the waste heat discharged by the distributed energy system is utilized to reheat the lake water source heat pump system, and the heating efficiency of the lake water source heat pump system is further improved by improving the water outlet temperature of the lake water source heat pump unit 4.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.

Claims (5)

1.一种区域分布式能源系统与湖水源热泵复合的供能系统,其特征在于,包括内燃机组(1)、溴化锂吸收式制冷机组(3)、湖水源热泵机组(4)和建筑供冷设备(13);所述内燃机组(1)用于发电为用电终端(2)供电;所述溴化锂吸收式制冷机组(3)用于吸收所述内燃机组(1)的余热给水降温后提供给所述建筑供冷设备(13);所述湖水源热泵机组(4)用于将所述建筑供冷设备的回水制冷后提供给所述建筑供冷设备(13);1. A regional distributed energy system and a lake water source heat pump composite energy supply system, characterized in that it comprises an internal combustion engine (1), a lithium bromide absorption refrigeration unit (3), a lake water source heat pump unit (4) and a building cooling device (13); the internal combustion engine (1) is used to generate electricity to supply power to a power terminal (2); the lithium bromide absorption refrigeration unit (3) is used to absorb the waste heat of the internal combustion engine (1) to cool the water supply and then provide it to the building cooling device (13); the lake water source heat pump unit (4) is used to cool the return water of the building cooling device and then provide it to the building cooling device (13); 所述溴化锂吸收式制冷机组(3)的加热烟气进口与内燃机组(1)的加热烟气出口连接,所述溴化锂吸收式制冷机组(3)的冷水出口与所述建筑供冷设备(13)的冷水进口连接,所述建筑供冷设备(13)的回水流出后分两条支路,一支流入所述溴化锂吸收式制冷机组(3)的回水进口,另一支流入所述湖水源热泵机组(4)的回水进口,所述湖水源热泵机组(4)的冷水出口与所述溴化锂吸收式制冷机组(3)的冷水出口合并后与所述建筑供冷设备(13)的冷水进口连通;The heating flue gas inlet of the lithium bromide absorption refrigeration unit (3) is connected to the heating flue gas outlet of the internal combustion engine unit (1), the cold water outlet of the lithium bromide absorption refrigeration unit (3) is connected to the cold water inlet of the building cooling equipment (13), the return water of the building cooling equipment (13) flows out and is divided into two branches, one branch flows into the return water inlet of the lithium bromide absorption refrigeration unit (3), and the other branch flows into the return water inlet of the lake water source heat pump unit (4), the cold water outlet of the lake water source heat pump unit (4) and the cold water outlet of the lithium bromide absorption refrigeration unit (3) are combined and connected to the cold water inlet of the building cooling equipment (13); 所述供能系统还包括余热锅炉(11)、烟—水换热器(10)和建筑供热设备(14),所述余热锅炉(11)的加热烟气进口与所述内燃机组(1)加热烟气出口连通,所述余热锅炉(11)的回水进口与所述建筑供热设备(14)的回水出口连通,所述余热锅炉(11)的热水出口与所述建筑供热设备(14)的热水进口连通,所述余热锅炉(11)的加热烟气出口与所述烟—水换热器(10)的加热烟气进口连通,所述湖水源热泵机组(4)的热水管穿过所述烟—水换热器(10)后与所述建筑供热设备(14)的热水进口连通;The energy supply system further comprises a waste heat boiler (11), a smoke-water heat exchanger (10) and a building heating device (14); the heating smoke inlet of the waste heat boiler (11) is connected to the heating smoke outlet of the internal combustion engine unit (1); the return water inlet of the waste heat boiler (11) is connected to the return water outlet of the building heating device (14); the hot water outlet of the waste heat boiler (11) is connected to the hot water inlet of the building heating device (14); the heating smoke outlet of the waste heat boiler (11) is connected to the heating smoke inlet of the smoke-water heat exchanger (10); and the hot water pipe of the lake water source heat pump unit (4) passes through the smoke-water heat exchanger (10) and is connected to the hot water inlet of the building heating device (14); 所述余热锅炉(11)用于吸收所述内燃机组(1)的余热生产热水然后提供给所述建筑供热设备(14);所述烟—水换热器(10)用于吸收所述余热锅炉(11)的余热对所述湖水源热泵机组(4)的出水进行再加热后再提供给所述建筑供热设备(14);The waste heat boiler (11) is used to absorb waste heat from the internal combustion engine unit (1) to produce hot water and then provide it to the building heating equipment (14); the smoke-water heat exchanger (10) is used to absorb waste heat from the waste heat boiler (11) to reheat the outlet water of the lake water source heat pump unit (4) and then provide it to the building heating equipment (14); 所述供能系统还包括相变蓄热装置(15),所述相变蓄热装置(15)用于将吸收烟-水换热器(10)出口的余热储存在相变储热水箱中,在用热高峰期或用电高峰期将储存的热能根据热量需求逐步释放,所述相变蓄热装置(15)的加热烟气进口与烟—水换热器(10)的加热烟气出口连通,所述烟-水换热器(10)的加热烟气出口与所述建筑供热设备(14)的热水进口连通;The energy supply system further comprises a phase change heat storage device (15), the phase change heat storage device (15) being used to store the waste heat absorbed at the outlet of the smoke-water heat exchanger (10) in a phase change heat storage tank, and gradually releasing the stored heat energy according to the heat demand during the peak heat consumption period or the peak electricity consumption period, the heating smoke inlet of the phase change heat storage device (15) being connected to the heating smoke outlet of the smoke-water heat exchanger (10), and the heating smoke outlet of the smoke-water heat exchanger (10) being connected to the hot water inlet of the building heating equipment (14); 所述供能系统还包括燃气锅炉(12),所述燃气锅炉(12)的热水出口与所述建筑供热设备(14)的热水进口连通,所述燃气锅炉(12)的回水进口与所述建筑供热设备(14)的回水出口连通,所述燃气锅炉(12)用于生产热水并提供给所述建筑供热设备(14)。The energy supply system further comprises a gas boiler (12), the hot water outlet of the gas boiler (12) being connected to the hot water inlet of the building heating equipment (14), the return water inlet of the gas boiler (12) being connected to the return water outlet of the building heating equipment (14), and the gas boiler (12) being used to produce hot water and provide it to the building heating equipment (14). 2.根据权利要求1所述的供能系统,其特征在于,所述供能系统还包括双工况冷水机组(5)和冰蓄冷装置(6),所述双工况冷水机组(5)用于将所述建筑供冷设备(13)的回水制冷后再对所述建筑供冷设备(13)提供冷源;所述双工况冷水机组(5)还用于制备流态冰并储存于所述冰蓄冷装置(6)中;所述冰蓄冷装置(6)用于储存流态冰,并将流态冰的冷量释放出来对所述建筑供冷设备(13)提供冷源;所述双工况冷水机组(5)的回水进口与所述建筑供冷设备(13)的回水出口连通,所述双工况冷水机组(5)的冷水出口分两支,一支与所述建筑供冷设备(13)的冷水进口连接,另一支与所述冰蓄冷装置(6)的冷水进口连接,所述冰蓄冷装置(6)的冷水出口与所述建筑供冷设备(13)的冷水进口连通,所述冰蓄冷装置(6)的回水出口与所述双工况冷水机组(5)的回水进口连通。2. The energy supply system according to claim 1 is characterized in that the energy supply system further comprises a dual-mode chiller (5) and an ice storage device (6), wherein the dual-mode chiller (5) is used to refrigerate the return water of the building cooling equipment (13) and then provide a cold source for the building cooling equipment (13); the dual-mode chiller (5) is also used to prepare slurry ice and store it in the ice storage device (6); the ice storage device (6) is used to store slurry ice and release the cold energy of the slurry ice to the building cooling equipment (13) ) provides a cold source; the return water inlet of the dual-mode chiller (5) is connected to the return water outlet of the building cooling equipment (13); the cold water outlet of the dual-mode chiller (5) is divided into two branches, one branch is connected to the cold water inlet of the building cooling equipment (13), and the other branch is connected to the cold water inlet of the ice storage device (6); the cold water outlet of the ice storage device (6) is connected to the cold water inlet of the building cooling equipment (13), and the return water outlet of the ice storage device (6) is connected to the return water inlet of the dual-mode chiller (5). 3.根据权利要求2所述的供能系统,其特征在于,所述供能系统还包括制冰板式换热器(7),所述制冰板式换热器(7)用于通过所述双工况冷水机组(5)对所述建筑供冷设备(13)的回水制冷;所述制冰板式换热器(7)的回水进口与所述建筑供冷设备(13)的回水出口连通,所述制冰板式换热器(7)的回水出口与所述双工况冷水机组(5)的进口连通,所述制冰板式换热器(7)的冷水进口与所述双工况冷水机组(5)的冷水出口连通,所述制冰板式换热器(7)的冷水出口与所述建筑供冷设备(13)的冷水进口连通。3. The energy supply system according to claim 2 is characterized in that the energy supply system also includes an ice plate heat exchanger (7), and the ice plate heat exchanger (7) is used to cool the return water of the building cooling equipment (13) through the dual-mode chiller (5); the return water inlet of the ice plate heat exchanger (7) is connected to the return water outlet of the building cooling equipment (13), the return water outlet of the ice plate heat exchanger (7) is connected to the inlet of the dual-mode chiller (5), the cold water inlet of the ice plate heat exchanger (7) is connected to the cold water outlet of the dual-mode chiller (5), and the cold water outlet of the ice plate heat exchanger (7) is connected to the cold water inlet of the building cooling equipment (13). 4.根据权利要求3所述的供能系统,其特征在于,所述供能系统还包括第一融冰板式换热器(8),所述第一融冰板式换热器(8)的第一冷水进口与所述冰蓄冷装置(6)的冷水出口连通,所述第一融冰板式换热器(8)的第二冷水进口与所述制冰板式换热器(7)的的冷水出口连通,所述第一融冰板式换热器(8)的的冷水出口与所述建筑供冷设备(13)的冷水进口连通;所述第一融冰板式换热器(8)用于利用所述冰蓄冷装置(6)内储存的流态冰对制冰板式换热器(7)制冷的冷水进一步制冷。4. The energy supply system according to claim 3 is characterized in that the energy supply system also includes a first ice melting plate heat exchanger (8), a first cold water inlet of the first ice melting plate heat exchanger (8) is connected to the cold water outlet of the ice storage device (6), a second cold water inlet of the first ice melting plate heat exchanger (8) is connected to the cold water outlet of the ice making plate heat exchanger (7), and the cold water outlet of the first ice melting plate heat exchanger (8) is connected to the cold water inlet of the building cooling equipment (13); the first ice melting plate heat exchanger (8) is used to further cool the cold water refrigerated by the ice making plate heat exchanger (7) using the fluidized ice stored in the ice storage device (6). 5.根据权利要求3所述的供能系统,其特征在于,所述供能系统还包括第二融冰板式换热器(9),所述第二融冰板式换热器(9)用于利用冰蓄冷装置(6)对所述溴化锂吸收式制冷机组(3)、湖水源热泵机组(4)的出口水进行再冷后提供给所述建筑供冷设备(13);所述第二融冰板式换热器(9)的第一冷水进口与所述冰蓄冷装置(6)的冷水出口连通,所述第二融冰板式换热器(9)的第二冷水进口与所述溴化锂吸收式制冷机组(3)的冷水出口连通,所述溴化锂吸收式制冷机组(3)的冷水出口与所述建筑供冷设备(13)的冷水进口连通。5. The energy supply system according to claim 3 is characterized in that the energy supply system also includes a second ice melting plate heat exchanger (9), which is used to use the ice storage device (6) to re-cool the outlet water of the lithium bromide absorption refrigeration unit (3) and the lake water source heat pump unit (4) and then provide it to the building cooling equipment (13); the first cold water inlet of the second ice melting plate heat exchanger (9) is connected to the cold water outlet of the ice storage device (6), the second cold water inlet of the second ice melting plate heat exchanger (9) is connected to the cold water outlet of the lithium bromide absorption refrigeration unit (3), and the cold water outlet of the lithium bromide absorption refrigeration unit (3) is connected to the cold water inlet of the building cooling equipment (13).
CN202010137000.1A 2020-03-02 2020-03-02 Regional distributed energy system and lake water source heat pump combined energy supply system Active CN111219906B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010137000.1A CN111219906B (en) 2020-03-02 2020-03-02 Regional distributed energy system and lake water source heat pump combined energy supply system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010137000.1A CN111219906B (en) 2020-03-02 2020-03-02 Regional distributed energy system and lake water source heat pump combined energy supply system

Publications (2)

Publication Number Publication Date
CN111219906A CN111219906A (en) 2020-06-02
CN111219906B true CN111219906B (en) 2024-11-29

Family

ID=70807678

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010137000.1A Active CN111219906B (en) 2020-03-02 2020-03-02 Regional distributed energy system and lake water source heat pump combined energy supply system

Country Status (1)

Country Link
CN (1) CN111219906B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114813186B (en) * 2022-04-25 2023-01-06 浙江大学 A heat pump-heat engine bidirectional cycle test platform and its operation method
CN115507405B (en) * 2022-09-28 2024-06-11 清华大学 Regional energy system and operation mode
CN115614861A (en) * 2022-09-29 2023-01-17 重庆清研理工智能控制技术研究院有限公司 A district-level energy storage cooling system and method utilizing surplus energy of enterprises
CN115789811A (en) * 2022-11-30 2023-03-14 青岛海尔空调器有限总公司 Method and device for controlling heat pump system, heat pump system and storage medium

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103256754A (en) * 2012-05-09 2013-08-21 湖南大学 Hybrid type energy supply system coupling natural gas based distributed energy source system with ground source heat pump
CN211695491U (en) * 2020-03-02 2020-10-16 重庆大学 Energy supply system combining area distributed energy system and lake water source heat pump

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6651443B1 (en) * 2000-10-20 2003-11-25 Milton Meckler Integrated absorption cogeneration
CN2687355Y (en) * 2004-01-19 2005-03-23 中国科学院工程热物理研究所 Multifunctional distributed cold-thermoelectric cogeneration system
WO2010000571A2 (en) * 2008-06-09 2010-01-07 Consejo Superior De Investigaciones Cientificas Absorber and absorber-evaporator assembly for absorption machines and lithium bromide - water absorption machines that integrate said absorber and absorber-evaporator assembly
KR101434908B1 (en) * 2013-05-23 2014-08-29 포스코에너지 주식회사 System for producing hot heat source or electric power using waste heat, and method for controlling therof
JP6415378B2 (en) * 2015-04-17 2018-10-31 矢崎エナジーシステム株式会社 Air conditioning system
CN207050263U (en) * 2017-07-04 2018-02-27 四川大通睿恒能源有限公司 Data center's distributed busbar protection heat pump is used in heating
KR101850002B1 (en) * 2017-11-30 2018-04-18 지에스파워 주식회사 District Heating System Including Heat Pump Using District Heat and Control Method thereof
CN208332226U (en) * 2018-05-31 2019-01-04 中交煤气热力研究设计院有限公司 A kind of natural gas cold, heat and electricity three-way energy supply system
CN208983454U (en) * 2018-10-18 2019-06-14 湖南新茂智慧能源有限公司 A kind of Regional Energy system
CN209672635U (en) * 2018-11-23 2019-11-22 葛洲坝能源重工有限公司 A kind of flexible and efficient combustion gas distributed busbar protection
CN110185538B (en) * 2019-05-29 2022-04-19 海南民生管道燃气有限公司 Multi-energy complementary distributed energy system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103256754A (en) * 2012-05-09 2013-08-21 湖南大学 Hybrid type energy supply system coupling natural gas based distributed energy source system with ground source heat pump
CN211695491U (en) * 2020-03-02 2020-10-16 重庆大学 Energy supply system combining area distributed energy system and lake water source heat pump

Also Published As

Publication number Publication date
CN111219906A (en) 2020-06-02

Similar Documents

Publication Publication Date Title
CN111219906B (en) Regional distributed energy system and lake water source heat pump combined energy supply system
CN201177332Y (en) Dual cold source heat pump centralized air conditioning unit with heat recovery ice storage
WO2023142394A1 (en) Energy storage-type energy system
CN110118448B (en) Thermal storage and cold storage gas-assisted solar energy absorption ammonia water cooling system
CN101509716A (en) Electric power plant cooling system for enhancing cooling efficiency by utilizing residual heat refrigeration manner
CN109883082B (en) Frostless air source energy storage type heat pump system and use method thereof
CN102628624A (en) Cascade lithium bromide refrigeration and cold storage system
CN211695491U (en) Energy supply system combining area distributed energy system and lake water source heat pump
CN111964196A (en) Solar phase-change cold-storage air conditioning system and control method
CN103574983A (en) Method and apparatus for air conditioner
JPH0219379B2 (en)
CN101280941A (en) Double-cold source heat pump centralized type air conditioner device
CN202371924U (en) Hybrid energy absorptive refrigerating air conditioning device
CN100432563C (en) Combined central air conditioning condensation heat recovery utilizating system and method
CN116951525A (en) Low-carbon area building energy system based on mid-deep water heating geothermal energy
CN102410668A (en) Phase-change energy storage type solar composite energy cold, warm and hot water triple co-generation system
CN108106297B (en) LNG cold energy recovery distributed energy system for data machine room
CN101398235A (en) Three-effect multi-source heat energy pump unit
CN114264000A (en) Distributed energy center application system
CN112049702B (en) Combined cooling heating and power system with energy storage device based on waste heat utilization of gas internal combustion engine
CN111928389B (en) A high-efficiency cooling and heating system based on the combined operation of heat source tower and ice storage
CN202350383U (en) Phase change energy storage type solar composite energy cold, warm and hot water triple supply system
CN109282397B (en) Novel energy storage air conditioner and method based on air compression refrigeration cycle
CN101936613B (en) Integrated heat exchange system
CN112781271A (en) Heat storage type solar combined cooling and heating system

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant