CN109340867A - A kind of paddy electricity energy-storage system based on phase transition heat accumulation unit - Google Patents
A kind of paddy electricity energy-storage system based on phase transition heat accumulation unit Download PDFInfo
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- CN109340867A CN109340867A CN201811190784.3A CN201811190784A CN109340867A CN 109340867 A CN109340867 A CN 109340867A CN 201811190784 A CN201811190784 A CN 201811190784A CN 109340867 A CN109340867 A CN 109340867A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D12/00—Other central heating systems
- F24D12/02—Other central heating systems having more than one heat source
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
- F24D19/10—Arrangement or mounting of control or safety devices
- F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
- F24D19/1009—Arrangement or mounting of control or safety devices for water heating systems for central heating
- F24D19/1039—Arrangement or mounting of control or safety devices for water heating systems for central heating the system uses a heat pump
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D2200/00—Heat sources or energy sources
- F24D2200/08—Electric heater
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D2200/00—Heat sources or energy sources
- F24D2200/11—Geothermal energy
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D2200/00—Heat sources or energy sources
- F24D2200/12—Heat pump
- F24D2200/123—Compression type heat pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D2200/00—Heat sources or energy sources
- F24D2200/16—Waste heat
- F24D2200/20—Sewage water
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
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- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
A kind of paddy electricity energy-storage system based on phase transition heat accumulation unit provided by the invention, including heat source subsystem, heat pump subsystem, energy storage subsystem and user subsystem, including for realizing accumulation of heat and exothermic phase transition heat accumulation unit.Heat source subsystem can utilize the heat of source of sewage and underground deep layer soil, and realization takes heat；Heat pump subsystem is run during night paddy electricity price, realizes heating；Heat distribution to each phase transition heat accumulation unit is realized accumulation of heat by energy storage subsystem；User subsystem, to indoor carry out heat release, realizes heat supply using phase transition heat accumulation unit；Phase transition heat accumulation unit includes heat exchange structure, outer barrel and cover, phase-change material is filled in outer barrel, heat exchange structure is made of several row's capillary networks, capillary network can form multiple heat transfer sources on the horizontal cross-section of phase transition heat accumulation unit, shorten heat exchange structure at a distance from phase-change material, and then promotes accumulation of heat and the exotherm rate of phase transition heat accumulation unit.
Description
Technical field
The invention belongs to energy storage fields, are related to stored energy application system, and in particular to a kind of paddy based on phase transition heat accumulation unit
Electric energy-storage system.
Background technique
China all has been carried out step price policy in most of areas, on the daytime of peak of power consumption, power price compared with
Expensive, at ebb stage-night of power load, power price is cheap.Further, since the electric load trough period at night also results in
A large amount of electric power resource waste, by way of energy storage, makes up the time difference of energy resource supply and user side, be it is current relatively can
Capable scheme.Storage electric energy generally requires battery, causes the investment of electric power storage and operating cost higher, and stores heat, it is only necessary to
It can be realized by water or phase-change material, investment and operating cost are all lower.
Energy efficiency coefficient when heat pump system heat supply is greater than 1, can use the more thermal energy of electric energy production, thus than direct
Electric heating has more energy-saving effect.Traditional heat pump system absorbs heat from air mostly, this will lead to energy efficiency coefficient
Lower, heating effect is also bad, has contained a large amount of thermal energy in sewage and underground deep layer soil, has compared to air higher
Temperature, as the evaporation side heat source of heat pump, energy-saving effect is significant.Northern area requires heating, novel capillary in winter
Net radiation tail end can utilize low-temperature heat source compared to traditional radiator, and have higher indoor thermal comfort.
Phase transition heat accumulation unit carries out accumulation of heat by the heat source concentrated at night, then transports or be assigned to and need heat source
The user side of supply carries out heat release, constantly can replace and be used alternatingly in heating season, so as to reduce coal heating mode
Environmental considerations reduce air pollution, and can make full use of paddy electricity, and it is competitively priced to enjoy paddy electricity.
Currently, there is also some problems for the heat exchange structure design of existing phase transition heat accumulation unit.Due to leading for phase-change material
Hot coefficient is very low, even if the thermal coefficient of heat exchange structure is very high, the whole heat transfer rate of phase-change material is still very slow, accumulation of heat
When phase-change material effective fusion range very little, to phase-change material heating melting capacity it is limited, accumulation of heat speed is slow, same road
Reason, exotherm rate also can be very slow.
The utility model patent of Patent No. CN201320865779.4 discloses a kind of regenerative heat exchange device and heat-accumulator tank
Device, regenerative heat exchange device are mounted in heat-accumulator tank, including heat exchanger tube and deck, and heat exchanger tube is spiral helicine copper pipe, heat exchange
Pipe is installed in heat-accumulator tank by deck, which increases heat exchange area by using spiral helicine heat exchanger tube, improves heat exchange amount,
Realize the storage and release of heat.But on the section of sustained height, only there are two the peripherad phase transformation materials of heat source transmitting point
Expect heat release or heat absorption, the whole accumulation of heat of phase transition heat accumulation unit and exotherm rate will be relatively slow.
Summary of the invention
The purpose of the present invention is to provide a kind of paddy electricity energy-storage system based on phase transition heat accumulation unit, heat pump subsystem can
Using the lower a large amount of thermal energy of feature centralized production of night paddy electricity price, energy storage, fortune are then carried out by phase transition heat accumulation unit
It is defeated or be dispensed into what user side absorbed heat using source of sewage and underground deep layer soil as evaporation side using, heat pump subsystem
Heat source, it is more energy-efficient, meanwhile, the low thermal conductivity based on phase-change material causes accumulation of heat and the slow problem of exotherm rate, into
It has gone the design of phase transition heat accumulation unit, has realized efficient augmentation of heat transfer.
In order to achieve the above objectives, the technical scheme adopted by the invention is as follows:
A kind of paddy electricity energy-storage system based on phase transition heat accumulation unit, it is characterised in that: including heat source subsystem, heat pump subsystem,
Energy storage subsystem and user subsystem；
The connection relationship of heat source subsystem are as follows: sewage source heat exchanger is connected to ground heat exchanger, and ground heat exchanger reconnects
The second plate heat exchanger water side ports, the second plate heat exchanger water side ports reconnect second circulation pump, second circulation pump
Reconnect sewage source heat exchanger；
The connection relationship of heat pump subsystem are as follows: the second coolant side of plate-type heat exchanger port is connected to liquid storage device, and liquid storage device connects again
Then capillary-compensated valve, capillary-compensated valve reconnect the first coolant side of plate-type heat exchanger port, the first plate-type heat-exchange
Device refrigerant side port reconnects compressor, and compressor reconnects device for drying and filtering, and device for drying and filtering reconnects second
Coolant side of plate-type heat exchanger port；
The connection relationship of energy storage subsystem are as follows: the first plate heat exchanger water side ports are connected to water main, set on water main
It is equipped with first circulation pump, first circulation pump reconnects the input end shut-off valve on each branch pipe of water main, input end shut-off valve
Phase transition heat accumulation unit is reconnected, phase transition heat accumulation unit reconnects outlet end shut-off valve, and outlet end shut-off valve, which reconnects, to return
Supply mains, return main reconnect the first plate heat exchanger water side ports；
The connection relationship of user subsystem are as follows: phase transition heat accumulation unit is separately connected user side input end shut-off valve and user's side outlet
Shut-off valve is held, user side outlet end shut-off valve reconnects the end V2 of temperature control three-way valve, and the end V1 of temperature control three-way valve connects user
Side circulating pump, user side circulating pump reconnect user side water main, and user side water main is connected to wall capillary network spoke
End is penetrated, wall capillary network radiation tail end reconnects user side return main, and user side return main reconnects respectively
The end V3 of temperature control three-way valve and user side input end shut-off valve.
The sewage source heat exchanger is arranged in underground sewer, and ground heat exchanger is arranged in underground deep layer soil
In.
When the phase transition heat accumulation unit completes accumulation of heat in energy storage subsystem, input end shut-off valve and outlet end can be closed
Shut-off valve, then phase transition heat accumulation unit is connected to user subsystem, it realizes to wall capillary network radiation tail end heat supply, completes phase
Become the centralized energy storage and strange land energy supply of regenerative apparatus.
The phase transition heat accumulation unit includes heat exchange structure, outer barrel and cover；
The structure of heat exchange structure are as follows: the both ends of capillary respectively connected horizontal tube and lower horizontal tube, form capillary network, if
Position is fixed after the preformed hole at supporter both ends is inserted at the both ends of dry row's capillary network respectively, and several row's capillary networks are presented etc.
Spacing is arranged in parallel, and the upper horizontal tube both ends of all capillary networks are sequentially connected using U-shaped elbow, coil pipe access in formation, on
Coil pipe access one end is connected to the second plug, and other end is connected to water inlet pipe, and water inlet pipe reconnects water inlet port, institute's hairiness
The lower horizontal tube both ends of tubule net are sequentially connected using U-shaped elbow, form lower coil pipe access, and lower coil pipe access one end is connected to the
One plug, other end are connected to outlet pipe, and outlet pipe reconnects water outlet port, and same Cheng Guanlu shape is integrally presented in heat exchange structure
Formula；
The structure of outer barrel are as follows: outer barrel is divided into 3 layers, from the outside to the core respectively metal outer, insulating layer and inner metallic layer, outer cylinder
It is provided on body into water port preformed hole, water outlet port preformed hole and temperature measuring set；
The structure of cover are as follows: mounting knob on the upside of lamina tecti, lamina tecti downside are provided with thermal insulator；
Heat exchange structure is integrally placed in outer barrel, water inlet port and water inlet port preformed hole cooperation, water outlet port and water outlet
Mouth preformed hole cooperation, cover and outer barrel cooperate, and form phase transition heat accumulation unit.
The capillary network is in sustained height, and the upper coil pipe access and lower coil pipe access are respectively by capillary
The upper horizontal tube and lower horizontal tube of net are connect with U-shaped bend horizontal, form the upper coil pipe access and lower coil pipe access of high unity,
The preformed hole at supporter both ends is level, is the first supporter, generally forms the first heat exchange structure.
The capillary network is that regular height is staggered, the upper coil pipe access and lower coil pipe access difference
It is connect at a certain angle by the upper horizontal tube and lower horizontal tube of capillary network with U-shaped elbow, it is logical to form the staggered upper coil pipe of height
Road and lower coil pipe access, the preformed hole at supporter both ends are that height is staggered, and are second of supporter, generally form second
Heat exchange structure.
Phase-changing energy storage material is filled between the inner metallic layer of the heat exchange structure and outer barrel, phase-changing energy storage material is phase
The paraffin that temperature is 40 to 60 DEG C.
The metal outer, inner metallic layer, cover material be stainless steel.
The material of packing material and insulating layer is polyurethane foam material or rock wool inside the thermal insulator.
There are two temp probes for the temperature measuring set tool, monitor the temperature of water inlet port and water outlet port respectively.
Compared with prior art, the invention has the benefit that
A kind of paddy electricity energy-storage system based on phase transition heat accumulation unit provided by the invention, heat source subsystem is as heat pump subsystem
Evaporation side heat source, using the thermal energy in source of sewage and underground deep layer soil, compared to absorbing heat, the temperature of heat source from air
Higher, the heating effect of system is more preferable, and energy efficiency coefficient is higher；Heat pump subsystem utilizes the advantageous refinements of paddy electricity low price, at night
Heating is concentrated, makes full use of electric power resource, and operating cost is low；Energy storage subsystem will be warm by water main and return main
Amount is assigned to the phase transition heat accumulation unit connected on each branch pipe, and phase transition heat accumulation unit realizes energy storage；User subsystem is stored by phase transformation
Thermal carries out heat supply, compensates for energy resource supply and time difference that user uses and space parallax；It is transported by a series of subsystem
Row, the present invention finally realize user side heat supply, and total system energy-saving effect is good, and environmental benefit is good.
Further, phase transition heat accumulation unit provided by the invention, heat exchange structure are connected using multiple rows of capillary network, are integrally in
Now with Cheng Guanlu form, compared to existing energy storage device, the structure can significant increase heat exchange area, capillary can store up
Multiple heat transfer sources can be formed on the horizontal cross-section of device, shorten heat exchange structure at a distance from phase-change material.Due to phase transformation material
The thermal coefficient of material is very low, and the diabatic process inside phase-change material is slow, even if the thermal coefficient of heat exchange structure is very high, phase transformation material
The accumulation of heat of material and exothermic process also can very slowly, so by forming multiple heat transfers on the horizontal cross-section of energy storage device
Source shortens heat source at a distance from phase-change material, can effectively promote accumulation of heat and the exotherm rate of phase-change material, promotes heat exchange effect
Rate.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of capillary network of the invention；
Fig. 2 is the structural schematic diagram of the first heat exchange structure without supporter of the invention；
Fig. 3 is the structural schematic diagram of the first supporter of the invention；
Fig. 4 is the structural schematic diagram of the first heat exchange structure of the invention；
Fig. 5 is the structural schematic diagram of second of heat exchange structure without supporter of the invention；
Fig. 6 is the left view of second of heat exchange structure without supporter of the invention；
Fig. 7 is the structural schematic diagram of second of supporter of the invention；
Fig. 8 is the structural schematic diagram of second of heat exchange structure of the invention；
Fig. 9 is the structural schematic diagram of outer barrel of the invention；
Figure 10 is the schematic cross-section of outer barrel of the invention；
Figure 11 is the structural schematic diagram of cover of the invention；
Figure 12 is that the structure of the phase transition heat accumulation unit of the invention being assembled by second of heat exchange structure, outer barrel and cover is shown
It is intended to；
Figure 13 is heat source subsystem, heat pump subsystem and the energy storage of the paddy electricity energy-storage system of the invention based on phase transition heat accumulation unit
Subsystem schematic diagram；
Figure 14 is the user subsystem schematic diagram of the paddy electricity energy-storage system of the invention based on phase transition heat accumulation unit；
Wherein, 1 is capillary network, and 101 be upper horizontal tube, and 102 be capillary, and 103 be lower horizontal tube, and 2 be U-shaped elbow, and 3 be the
One plug, 4 be water outlet port, and 5 be outlet pipe, and 6 be water inlet port, and 7 be water inlet pipe, and 8 be outer barrel, and 801 be metal outer,
802 be insulating layer, and 803 be inner metallic layer, and 804 be water inlet port preformed hole, and 805 be water outlet port preformed hole, and 806 survey for temperature
Instrument is measured, 9 be cover, and 901 be lamina tecti, and 902 be handle, and 903 be thermal insulator, and 10 be supporter, and 11 be the second plug, and 12 be phase
Become regenerative apparatus, 13 be input end shut-off valve, and 14 be outlet end shut-off valve, and 15 be return main, and 16 be the first plate heat exchanger,
17 be water main, and 18 pump for first circulation, and 19 be compressor, and 20 be device for drying and filtering, and 21 be the second plate heat exchanger, and 22 are
Liquid storage device, 23 be capillary-compensated valve, and 24 pump for second circulation, and 25 be sewage source heat exchanger, and 26 be ground heat exchanger, and 27 are
User side input end shut-off valve, 28 be user side outlet end shut-off valve, and 29 be temperature control three-way valve, and 30 be user side circulating pump, 31
It is user side water main for user side return main, 32,33 be wall capillary network radiation tail end.
Specific embodiment
The present invention is described in further details with reference to the accompanying drawing.
The total design of the present invention is: a kind of paddy electricity energy-storage system based on phase transition heat accumulation unit, including heat source subsystem, heat
Pump subsystem, energy storage subsystem and user subsystem；Heat source subsystem can utilize the heat of source of sewage and underground deep layer soil, real
Now take heat；Heat pump subsystem is run during night paddy electricity price, realizes heating；Energy storage subsystem is by heat distribution to each phase
Become regenerative apparatus, realizes accumulation of heat；User subsystem, to indoor carry out heat release, realizes heat supply using phase transition heat accumulation unit；System is more
Energy resource supply is mended and time difference that user uses and space parallax, the energy efficiency coefficient of heat pump subsystem is high, and operating cost is low；Phase transformation
The heat exchange structure of regenerative apparatus connects to be formed using multiple rows of capillary network, and significant increase heat exchange area, capillary can be in energy storage
Multiple heat transfer sources are formed on the horizontal cross-section of device, shorten heat exchange structure at a distance from phase-change material, effectively promotion phase transformation
The accumulation of heat of material and exotherm rate, improving heat exchanging efficiency.
For the technology contents and construction and purpose that the present invention will be described in detail, it is specifically introduced with reference to the accompanying drawing.
As shown in Figure 13 and Figure 14, a kind of paddy electricity energy-storage system based on phase transition heat accumulation unit, it is characterised in that: including heat
Source subsystem, heat pump subsystem, energy storage subsystem and user subsystem.
The connection relationship of heat source subsystem are as follows: sewage source heat exchanger 25 is connected to ground heat exchanger 26, underground pipe heat exchange
Device 26 reconnects 21 water side ports of the second plate heat exchanger, and 21 water side ports of the second plate heat exchanger reconnect second circulation
Pump 24, second circulation pump 24 reconnect sewage source heat exchanger 25.
The connection relationship of heat pump subsystem are as follows: 21 refrigerant side port of the second plate heat exchanger is connected to liquid storage device 22, storage
Liquid device 22 reconnects capillary-compensated valve 23, and capillary-compensated valve 23 reconnects 16 refrigerant side of the first plate heat exchanger
Mouthful, 16 refrigerant side port of the first plate heat exchanger reconnects compressor 19, and compressor 19 reconnects device for drying and filtering 20,
Device for drying and filtering 20 reconnects 21 refrigerant side port of the second plate heat exchanger.
The connection relationship of energy storage subsystem are as follows: 16 water side ports of the first plate heat exchanger are connected to water main 17, water supply
First circulation pump 18 is provided on general pipeline 17, first circulation pump 18 reconnects the input end cut-off on each branch pipe of water main 17
Valve 13, input end shut-off valve 13 reconnect phase transition heat accumulation unit 12, and phase transition heat accumulation unit 12 reconnects outlet end shut-off valve
14, outlet end shut-off valve 14 reconnects return main 15, and return main 15 reconnects 16 water side of the first plate heat exchanger
Mouthful.
The connection relationship of user subsystem are as follows: phase transition heat accumulation unit 12 is separately connected user side input end shut-off valve 27 and uses
Family side outlet end shut-off valve 28, user side outlet end shut-off valve 28 reconnects the end V2 of temperature control three-way valve 29, temperature control three-way valve
29 end V1 connects user side circulating pump 30, and user side circulating pump 30 reconnects user side water main 32, and user side water supply is total
Pipe 32 is connected to wall capillary network radiation tail end 33, and wall capillary network radiation tail end 33 reconnects user side return main
31, user side return main 31 reconnects the end V3 and the user side input end shut-off valve 27 of temperature control three-way valve 29 respectively.
Sewage source heat exchanger 25 is arranged in underground sewer, and ground heat exchanger 26 is arranged in underground deep layer soil
In；When phase transition heat accumulation unit 12 completes accumulation of heat in energy storage subsystem, input end shut-off valve 13 and outlet end shut-off valve can be closed
14, then phase transition heat accumulation unit 12 is connected to user subsystem, it realizes to 33 heat supply of wall capillary network radiation tail end, completes phase
Become the centralized energy storage of regenerative apparatus 12 and the purpose of strange land energy supply.
As shown in Fig. 1 to Figure 12, phase transition heat accumulation unit 12 includes heat exchange structure, outer barrel 8 and cover 9；Heat exchange structure
Structure are as follows: the both ends of capillary 102 respectively connected horizontal tube 101 and lower horizontal tube 103, form capillary network 1, Ruo Ganpai
Position is fixed after the preformed hole at 10 both ends of supporter is inserted at the both ends of capillary network 1 respectively, and several row's capillary networks 1 are presented etc.
Spacing is arranged in parallel, and 101 both ends of upper horizontal tube of all capillary networks 1 are sequentially connected using U-shaped elbow 2, and coil pipe is logical in formation
Road, upper coil pipe access one end are connected to the second plug 11, and other end is connected to water inlet pipe 7, and water inlet pipe 7 reconnects water inlet end
103 both ends of lower horizontal tube of mouth 6, all capillary networks 1 are sequentially connected using U-shaped elbow 2, form lower coil pipe access, lower coil pipe
Access one end is connected to the first plug 3, and other end is connected to outlet pipe 5, and outlet pipe 5 reconnects water outlet port 4, heat exchange knot
Same Cheng Guanlu form is integrally presented in structure；The structure of outer barrel 8 are as follows: it is 3 layers that outer barrel 8, which divides, from the outside to the core respectively metal outer
801, insulating layer 802 and inner metallic layer 803 are provided with into water port preformed hole 804, water outlet port preformed hole 805 on outer barrel
With temperature measuring set 806；The structure of cover 9 are as follows: 901 upside mounting knob 902 of lamina tecti is provided with guarantor on the downside of lamina tecti 901
Warm body 903；Heat exchange structure is integrally placed in outer barrel 8, and water inlet port 6 and water inlet port preformed hole 804 cooperate, water outlet port
4 cooperate with water outlet port preformed hole 805, and cover 9 and outer barrel 8 cooperate, and form phase transition heat accumulation unit 12.
As shown in Figures 2 to 4, capillary network 1 is in sustained height, the upper coil pipe access and lower coil pipe access point
Not by the upper horizontal tube 101 of capillary network 1 and lower horizontal tube 103 and U-shaped 2 horizontal connection of elbow, the upper disk of high unity is formed
Pipe access and lower coil pipe access, the preformed hole at 10 both ends of supporter are level, are the first supporter, generally form the first and change
Heat structure.
As shown in Fig. 5 to Fig. 8 and Figure 12, capillary network 1 is that regular height is staggered, the upper coil pipe access
Connected at a certain angle by the upper horizontal tube 101 of capillary network 1 and lower horizontal tube 103 with U-shaped elbow 2 respectively with lower coil pipe access
It connects, forms the staggered upper coil pipe access of height and lower coil pipe access, the preformed hole at 10 both ends of supporter is that height is staggered, and is
Second of supporter generally forms second of heat exchange structure.
Phase-changing energy storage material is filled between heat exchange structure and the inner metallic layer 803 of outer barrel 8, phase-changing energy storage material is phase transformation
The paraffin that temperature is 40 to 60 DEG C；Metal outer 801, inner metallic layer 803, cover 9 material be stainless steel；Thermal insulator 903
The material of internal packing material and insulating layer 802 is polyurethane foam material or rock wool；There are two temperature for the tool of temperature measuring set 806
Degree probe, monitors the temperature of water inlet port 6 and water outlet port 4 respectively.
A kind of paddy electricity energy-storage system based on phase transition heat accumulation unit provided by the invention, heat source subsystem, heat pump subsystem
It is run during night paddy electricity price with energy storage subsystem, produces thermal energy, the phase transition heat accumulation unit that accumulation of heat is completed is redistributed to respectively
Heat supply is realized in a user subsystem, specific workflow is as follows:
The operational process of heat source subsystem are as follows: recirculated water absorbs source of sewage heat by sewage source heat exchanger 25 and tentatively heated
Afterwards, then by ground heat exchanger 26 underground deep layer soil heat is absorbed, then heat release cools down in the second plate heat exchanger 21
Afterwards, it returns in source of sewage heat exchanger 25 under the driving of second circulation pump 24 and absorbs heat again.
The operational process of heat pump subsystem are as follows: be evaporated to gaseous state after the liquid refrigerant heat absorption in the second plate heat exchanger 21
Refrigerant, gaseous refrigerant enter the gaseous refrigerant that high temperature and pressure is compressed into compressor 19 after passing through device for drying and filtering 20
Agent, dry device for drying and filtering 20 for filtering the liquid refrigerant carried secretly in gaseous refrigerant, the gaseous refrigerant of high temperature and pressure into
Become the liquid refrigerant of medium temperature high pressure after entering the condensation heat release of the first plate heat exchanger 16, to realize the purpose of heating, medium temperature
The liquid refrigerant of high pressure becomes the liquid refrigerant of medium temperature low pressure, medium temperature low pressure by the throttling action of capillary-compensated valve 23
Liquid refrigerant turn again to evaporation endothermic in the second plate heat exchanger 21 by liquid storage device 22, liquid storage device 22 can store refrigeration
Agent flux refrigerant extra when changing.
The operational process of energy storage subsystem are as follows: after recirculated water is exchanged heat by 16 water side of the first plate heat exchanger, followed first
Phase transition heat accumulation unit 12 is entered by each input end shut-off valve 13 along water main 17 under the driving of ring pump 18, realizes phase transformation
The heat accumulation function of regenerative apparatus 12, the recirculated water after heat release return to the first plate along return main 15 by outlet end shut-off valve 14
It exchanges heat in formula heat exchanger 16.When 12 accumulation of heat of phase transition heat accumulation unit is completed, input end shut-off valve 13 and outlet end shut-off valve 14 are closed,
It is replaced with the phase transition heat accumulation unit 12 of non-accumulation of heat, then opens input end shut-off valve 13 and the progress accumulation of heat of outlet end shut-off valve 14
Journey.
The operational process of user subsystem are as follows: recirculated water is heated after absorbing heat in phase transition heat accumulation unit 12, then is led to
User side outlet end shut-off valve 28 and temperature control three-way valve 29 are crossed, it is total along user side water supply under the driving of user side circulating pump 30
Pipe 32 enter 33 heat release of wall capillary network radiation tail end, realize final indoor heating function, the recirculated water after heat release along
User side return main 31 is returned in phase transition heat accumulation unit 12 by user side input end shut-off valve 27 to continue to absorb heat；Temperature control
Triple valve 29 adjusts the size of the port V3 and V2 according to room temperature, i.e., flows into user side in adjusting user side return main 31 and give
The return water ratio of supply mains 32 controls the circulating water temperature for flowing into wall capillary network radiation tail end 33 to realize；System
When operation, user side input end shut-off valve 27 and user side outlet end shut-off valve 28 are kept it turning on, what is completed to heat release
When phase transition heat accumulation unit 12 is replaced, user side input end shut-off valve 27 and user side outlet end shut-off valve 28 are closed.
The operational process of phase transition heat accumulation unit is divided into phase-transition heat-storage and phase transformation exothermic process, specific as follows:
Phase-transition heat-storage process realizes that recirculated water is entered in heat exchange structure by water inlet port 6, along water inlet in energy storage subsystem
Pipe 7 flows into upper coil pipe access, lower coil pipe access is flowed into further along the capillary 102 of capillary network 1, finally along 5 He of outlet pipe
Water outlet port 4 flows out.The whole phase change material releases heat into outer barrel 8 of heat exchange structure, phase-change material heat up after absorbing heat, and
It gradually melts, amount of heat is stored by sensible heat and latent heat of phase change.
Phase transformation exothermic process realizes in user subsystem, flow process one when recirculated water flow process and phase-transition heat-storage
It causes, the heat of the phase-change material storage in heat exchange structure overall absorption outer barrel 8, starts to cool down after phase change material releases heat, and by
It gradually solidifies, the sensible heat of storage and latent heat of phase change is released to user side.
Temperature measuring set 806 can measure and show the temperature of the water inlet port 6 of phase transition heat accumulation unit and the temperature of water outlet port 4
Degree, until both temperature difference close to 0 when, show that heat-accumulating process or exothermic process are basically completed, then need replacing.
Claims (10)
1. a kind of paddy electricity energy-storage system based on phase transition heat accumulation unit, it is characterised in that: including heat source subsystem, heat pump subsystem
System, energy storage subsystem and user subsystem；
The connection relationship of heat source subsystem are as follows: sewage source heat exchanger (25) is connected to ground heat exchanger (26), underground pipe heat exchange
Device (26) reconnects the second plate heat exchanger (21) water side ports, and the second plate heat exchanger (21) water side ports reconnect
Two circulating pumps (24), second circulation pump (24) reconnect sewage source heat exchanger (25)；
The connection relationship of heat pump subsystem are as follows: the second plate heat exchanger (21) refrigerant side port is connected to liquid storage device (22), storage
Liquid device (22) reconnects capillary-compensated valve (23), and capillary-compensated valve (23) reconnects the first plate heat exchanger (16) system
Cryogen side ports, the first plate heat exchanger (16) refrigerant side port reconnect compressor (19), and compressor (19) reconnects
Device for drying and filtering (20), device for drying and filtering (20) reconnect the second plate heat exchanger (21) refrigerant side port；
The connection relationship of energy storage subsystem are as follows: the first plate heat exchanger (16) water side ports are connected to water main (17), water supply
Be provided on general pipeline (17) first circulation pump (18), first circulation pump (18) reconnect on water main (17) each branch pipe into
Mouth end shut-off valve (13), input end shut-off valve (13) reconnect phase transition heat accumulation unit (12), and phase transition heat accumulation unit (12) connects again
Then outlet end shut-off valve (14), outlet end shut-off valve (14) reconnect return main (15), and return main (15) reconnects
The first plate heat exchanger (16) water side ports；
The connection relationship of user subsystem are as follows: phase transition heat accumulation unit (12) is separately connected user side input end shut-off valve (27) and uses
Family side outlet end shut-off valve (28), user side outlet end shut-off valve (28) reconnect the end V2 of temperature control three-way valve (29), temperature control
The end V1 of triple valve (29) connects user side circulating pump (30), and user side circulating pump (30) reconnects user side water main
(32), user side water main (32) is connected to wall capillary network radiation tail end (33), wall capillary network radiation tail end
(33) it reconnects user side return main (31), user side return main (31) reconnects temperature control three-way valve (29) respectively
The end V3 and user side input end shut-off valve (27).
2. a kind of paddy electricity energy-storage system based on phase transition heat accumulation unit according to claim 1, it is characterised in that: described
Sewage source heat exchanger (25) is arranged in underground sewer, and ground heat exchanger (26) is arranged in underground deep layer soil.
3. a kind of paddy electricity energy-storage system based on phase transition heat accumulation unit according to claim 1, it is characterised in that: described
When phase transition heat accumulation unit (12) completes accumulation of heat in energy storage subsystem, input end shut-off valve (13) and outlet end shut-off valve can be closed
(14), it then by phase transition heat accumulation unit (12) is connected to user subsystem, is realized to wall capillary network radiation tail end (33) heat supply,
Complete the centralized energy storage and strange land energy supply of phase transition heat accumulation unit (12).
4. a kind of paddy electricity energy-storage system based on phase transition heat accumulation unit according to claim 1, it is characterised in that: described
Phase transition heat accumulation unit (12) includes heat exchange structure, outer barrel (8) and cover (9)；
The structure of heat exchange structure are as follows: the both ends of capillary (102) respectively connected horizontal tube (101) and lower horizontal tube (103),
It is formed capillary network (1), position quilt after the preformed hole at supporter (10) both ends is inserted at the both ends of several row's capillary networks (1) respectively
Fixed, several row's capillary networks (1) presentations are equidistant arranged in parallel, and upper horizontal tube (101) both ends of all capillary networks (1) are adopted
It is sequentially connected with U-shaped elbow (2), coil pipe access in formation, upper coil pipe access one end is connected to the second plug (11), other end
It is connected to water inlet pipe (7), water inlet pipe (7) reconnects water inlet port (6), the lower horizontal tube (103) two of all capillary networks (1)
End is sequentially connected using U-shaped elbow (2), forms lower coil pipe access, and lower coil pipe access one end is connected to the first plug (3), in addition
One end is connected to outlet pipe (5), and outlet pipe (5) reconnects water outlet port (4), and same Cheng Guanlu shape is integrally presented in heat exchange structure
Formula；
The structure of outer barrel (8) are as follows: outer barrel (8) is divided into 3 layers, from the outside to the core respectively metal outer (801), insulating layer
(802) and inner metallic layer (803), be provided on outer barrel into water port preformed hole (804), water outlet port preformed hole (805) and
Temperature measuring set (806)；
The structure of cover (9) are as follows: mounting knob (902) on the upside of lamina tecti (901), lamina tecti (901) downside are provided with thermal insulator
(903)；
Heat exchange structure is integrally placed in outer barrel (8), water inlet port (6) and water inlet port preformed hole (804) cooperation, water outlet
Mouth (4) and water outlet port preformed hole (805) cooperate, and cover (9) and outer barrel (8) cooperate, composition phase transition heat accumulation unit (12).
5. a kind of paddy electricity energy-storage system based on phase transition heat accumulation unit according to claim 4, it is characterised in that: described
Capillary network (1) is in sustained height, and the upper coil pipe access and lower coil pipe access are respectively by the upper water of capillary network (1)
Flat pipe (101) and lower horizontal tube (103) and U-shaped elbow (2) horizontal connection, form the upper coil pipe access and lower coil pipe of high unity
Access.
6. a kind of paddy electricity energy-storage system based on phase transition heat accumulation unit according to claim 4, it is characterised in that: described
Capillary network (1) is that regular height is staggered, and the upper coil pipe access and lower coil pipe access are respectively by capillary network
(1) upper horizontal tube (101) and lower horizontal tube (103) is connect at a certain angle with U-shaped elbow (2), formed height it is staggered on
Coil pipe access and lower coil pipe access.
7. a kind of paddy electricity energy-storage system based on phase transition heat accumulation unit according to claim 4, it is characterised in that: described
Phase-changing energy storage material is filled between heat exchange structure and the inner metallic layer (803) of outer barrel (8), phase-changing energy storage material is phase transition temperature
For 40 to 60 DEG C of paraffin.
8. a kind of paddy electricity energy-storage system based on phase transition heat accumulation unit according to claim 4, it is characterised in that: described
Metal outer (801), inner metallic layer (803), cover (9) material be stainless steel.
9. a kind of paddy electricity energy-storage system based on phase transition heat accumulation unit according to claim 4, it is characterised in that: described
The material of the internal packing material of thermal insulator (903) and insulating layer (802) is polyurethane foam material or rock wool.
10. a kind of paddy electricity energy-storage system based on phase transition heat accumulation unit according to claim 4, it is characterised in that: described
Temperature measuring set (806) tool there are two temp probe, the temperature of monitoring water inlet port (6) and water outlet port (4) respectively.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112923425A (en) * | 2021-03-11 | 2021-06-08 | 河北工业大学 | Solar energy coupling biomass village and town building energy supply system based on phase change energy storage |
| GB2604952A (en) * | 2021-02-07 | 2022-09-21 | Octopus Energy Group Ltd | Methods and systems for modulating energy usage |
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| CN203615646U (en) * | 2013-10-18 | 2014-05-28 | 华电电力科学研究院 | Heat-accumulation type ground source heat pump device |
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| CN201126323Y (en) * | 2007-08-20 | 2008-10-01 | 高秀明 | Phase transition energy storage tank |
| JP2012057836A (en) * | 2010-09-07 | 2012-03-22 | Daikin Industries Ltd | Underground heat exchanger and heat pump using the same |
| CN203615646U (en) * | 2013-10-18 | 2014-05-28 | 华电电力科学研究院 | Heat-accumulation type ground source heat pump device |
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| GB2604952A (en) * | 2021-02-07 | 2022-09-21 | Octopus Energy Group Ltd | Methods and systems for modulating energy usage |
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| CN112923425A (en) * | 2021-03-11 | 2021-06-08 | 河北工业大学 | Solar energy coupling biomass village and town building energy supply system based on phase change energy storage |
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| CN109340867B (en) | 2021-07-09 |
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