CN115127165A - Electric heating double-storage energy supply system of solar energy coupling soil source heat pump - Google Patents
Electric heating double-storage energy supply system of solar energy coupling soil source heat pump Download PDFInfo
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- CN115127165A CN115127165A CN202211042549.8A CN202211042549A CN115127165A CN 115127165 A CN115127165 A CN 115127165A CN 202211042549 A CN202211042549 A CN 202211042549A CN 115127165 A CN115127165 A CN 115127165A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0046—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater using natural energy, e.g. solar energy, energy from the ground
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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
- F24D15/00—Other domestic- or space-heating systems
- F24D15/02—Other domestic- or space-heating systems consisting of self-contained heating units, e.g. storage heaters
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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
- F24D15/00—Other domestic- or space-heating systems
- F24D15/04—Other domestic- or space-heating systems using 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
- F24D18/00—Small-scale combined heat and power [CHP] generation systems specially adapted for domestic heating, space heating or domestic hot-water supply
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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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S60/00—Arrangements for storing heat collected by solar heat collectors
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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
- F24D2101/00—Electric generators of small-scale CHP systems
- F24D2101/50—Thermophotovoltaic [TPV] modules
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0046—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater using natural energy, e.g. solar energy, energy from the ground
- F24F2005/0064—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater using natural energy, e.g. solar energy, energy from the ground using solar energy
- F24F2005/0067—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater using natural energy, e.g. solar energy, energy from the ground using solar energy with photovoltaic panels
Abstract
The invention relates to an electric heating double-storage energy supply system of a solar energy coupling soil source heat pump, and relates to the technical field of electric heating double-storage energy supply. The solar energy heat pump system comprises a solar energy subsystem, an electric heating double-storage subsystem, a control subsystem, a soil energy storage subsystem, a soil source heat pump and a building energy supply subsystem, wherein the soil source heat pump is used as a heat supply source and a cold supply source in summer for supplementing in severe cold periods in winter, electricity generated by a photovoltaic panel is prestored in a storage battery and is supplied to system equipment and a building, unfavorable heat generated by the photovoltaic panel and the storage battery is collected in an active and passive coupling mode combining phase change material and liquid cooling, energy is stored through a heat insulation energy storage device and is used for building heating in winter and soil heat supplementing in summer, a controller monitors the temperature of equipment connected with a temperature sensor to judge whether active cooling is started or not, and then adjusts the power of a water pump and is used for cooling or heating the building.
Description
Technical Field
The invention relates to the technical field of electric heating double-storage energy supply, in particular to an electric heating double-storage energy supply system of a solar energy coupling soil source heat pump.
Background
In severe cold areas, the heating period is long in winter, and reaches 6 months, so that the heating energy consumption is huge. The clean heating of realizing this climatic region is significant to reducing the heating energy consumption in the north, but in view of building winter heat load far above summer cold load, adopts single renewable energy heating can't satisfy heat supply/cold demand, consequently develops the complementary energy supply system of multiple renewable energy and realizes low carbon energy supply very important to severe cold district. The soil source heat pump system is a clean energy supply system which can efficiently utilize underground shallow geothermal resources and can supply heat and refrigerate, but for severe cold areas, other heat sources must be supplemented to maintain soil heat balance in summer in order to ensure the sustainable operation of the system. Solar energy is widely used at present as a renewable energy source with abundant content, easy acquisition and no pollution. Compared with a single photovoltaic or photo-thermal system, the photovoltaic and photo-thermal system synergistically combines the photovoltaic plate and the heat collection plate, reduces the space occupation of the photovoltaic and photo-thermal system, and reduces the temperature of the photovoltaic plate through a medium in the heat collection assembly, so that the system efficiency is improved, and the photovoltaic and photo-thermal system is widely applied in recent years.
Chinese patent publication No. CN105371340A discloses a small solar energy ground source heat pump system and its operation method for villa in severe cold areas, when the soil cold source is in direct cooling operation in summer, the heat pump compressor is not started, only the circulating pump connected with the outdoor buried pipe heat exchanger is started, the circulating medium coming out from the buried pipe heat exchanger directly enters the fan coil air conditioner, and the cooling circulation is performed indoors; when the ground source heat pump supplies cold, the circulating pumps and the compressors on the two sides of the heat pump evaporator and the condenser are all started, the refrigerant working medium absorbs heat in the circulating medium of the indoor pipeline in the evaporator, then the heat is exchanged to the circulating medium in the outlet of the buried pipe heat exchanger in the condenser through the refrigerant circulation and then is discharged to underground soil, in the season of no heating, the energy collected by the solar heat collector can exchange heat with the circulating medium in the buried pipe through the plate heat exchanger, and then the heat is stored in the soil, so that the efficiency of the system in the winter heating is improved. As can be seen, the following problems exist:
1. the photovoltaic conversion efficiency of the photovoltaic panel is low;
2. the high temperature of the storage battery affects the safety and the service life of the battery;
3. soil heat imbalance caused by a soil source heat pump energy supply system in a severe cold region.
Disclosure of Invention
Therefore, the invention provides an electric-heating double-energy-storage and supply system of a solar energy coupling ground source heat pump, which is used for overcoming the problems that in the prior art, the photoelectric conversion efficiency of a photovoltaic panel is reduced due to high temperature, the safety and the service life of a battery are influenced by the high temperature of a storage battery, and the soil heat imbalance caused by a ground source heat pump energy supply system in a severe cold region is solved.
In order to achieve the above object, the present invention provides an electric heating dual energy storage and supply system of a solar energy coupled soil source heat pump, comprising:
the solar subsystem comprises a photovoltaic photo-thermal unit, a first water outlet pipe and a first water return pipe which are connected with the photovoltaic photo-thermal unit, a first temperature sensor arranged on the first water outlet pipe, a first electromagnetic valve arranged on the first water outlet pipe and a first water pump arranged on the first water return pipe; the photovoltaic photo-thermal unit comprises a photovoltaic cell panel, a heat absorbing plate arranged on one side of the photovoltaic cell panel, a first phase change material filled below one side, far away from the photovoltaic cell panel, of the heat absorbing plate and an insulating layer arranged on one side, far away from the first phase change material, of the heat absorbing plate, wherein an H-shaped micro-channel heat exchange pipeline is arranged in the first phase change material and used for loading a heat exchange working medium to exchange heat with the heat exchange working medium in the heat storage water tank;
the electric heating double-storage subsystem comprises a photovoltaic cell panel, a solar controller connected with the photovoltaic cell panel, a storage battery pack connected with the solar controller, a second water outlet pipe and a second water return pipe connected with the storage battery pack, a storage battery pack heat recovery module coated outside each storage battery in the storage battery pack, a second temperature sensor arranged at the center of the storage battery pack and a first inverter connected with the storage battery pack; the storage battery pack heat recovery module comprises a hollow cooling plate arranged in the center between two adjacent storage batteries of the storage battery pack and a metal shell coated outside the storage battery pack, and second phase change materials are filled in gaps between the hollow cooling plate and the adjacent storage batteries and gaps between the storage batteries and the metal plate;
the soil energy storage subsystem comprises a heat-preservation energy storage device, a third water outlet pipe and a third water return pipe, wherein the third water outlet pipe and the third water return pipe are connected with the heat-preservation energy storage device;
the soil source heat pump comprises a fourth water outlet pipe and a fourth water return pipe which are connected with the heat-preservation energy storage device, a second on-off valve is arranged on the fourth water return pipe, a fourth water pump is arranged on the fourth water outlet pipe, and the soil source heat pump is used for exchanging heat with the heat-preservation energy storage device;
the control subsystem comprises a controller, wherein the controller is respectively connected with the first temperature sensor, the second temperature sensor, the third temperature sensor, the first electromagnetic valve, the first water pump, the second electromagnetic valve, the second water pump, the first on-off valve, the second on-off valve, the third water pump and the fourth water pump and is used for respectively controlling the first electromagnetic valve, the first water pump, the second electromagnetic valve, the second water pump, the first on-off valve, the second on-off valve, the third water pump and the fourth water pump; the temperature sensor is used for outputting a closing signal or an opening signal to the first electromagnetic valve and the first water pump according to the received monitoring temperature difference output by the first temperature sensor and the third temperature sensor, and outputting a closing signal or an opening signal to the second electromagnetic valve and the second water pump according to the received temperature value of the second temperature sensor.
Further, the second temperature sensor is used for measuring the central temperature of a second phase change material in the storage battery pack heat recovery module, the second phase change material absorbs heat generated by the storage battery pack in the charging and discharging processes of the storage battery pack, and the heat is transmitted to the heat storage water tank through a heat exchange working medium in the cooling plate.
Further, the controller calculates the difference between the working medium outlet temperature Tc of the H-shaped microchannel heat exchange pipeline at the back of the photovoltaic cell panel measured by the first temperature sensor and the working medium temperature Tw in the heat storage water tank measured by the third temperature sensor when the monitored temperature of the first temperature sensor continuously rises, when Tc-Tw is more than or equal to Delta TH, the controller judges that active cooling circulation needs to be started, and transmits a starting signal to the first electromagnetic valve and the first water pump through a signal line, when Tc-Tw is less than Delta TL, the controller judges that active cooling is not needed, and transmits a closing signal to the first electromagnetic valve and the first water pump, wherein Delta TH is a temperature parameter for starting active cooling, TH =5, Delta TL is a temperature parameter not needing active cooling, and Delta TL =2 ℃;
the temperature value is a temperature value Tp of a second phase change material in the center of the storage battery pack monitored by the second temperature sensor, a preset temperature value Ts of the second phase change material in the center of the storage battery pack is set in the controller, and when the Tp is larger than or equal to the Ts, the second electromagnetic valve and the second water pump controlled by the controller are started to actively cool the storage battery pack.
Further, when the controller judges that the active cooling cycle needs to be started, the controller calculates a ratio B of a difference between a working medium outlet temperature Tc of the H-shaped microchannel heat exchange pipeline at the back of the photovoltaic cell panel measured by the first temperature sensor and a working medium temperature Tw in the heat storage water tank measured by the third temperature sensor and a temperature parameter Deltath, sets B = Tc-Tw/. DELTA.TH, and determines the starting power of the first water pump according to a comparison result of the ratio and a preset ratio,
wherein the controller is provided with a first preset ratio B1, a second preset ratio B2, first starting power Pa1 of the first water pump, second starting power Pa2 of the first water pump and third starting power Pa3 of the first water pump, wherein B1 is more than B2, Pa1 is more than Pa2 and more than Pa3,
when B is less than or equal to B1, the controller sets the starting power of the first water pump to Pa 1;
when B1 < B ≦ B2, the controller sets the starting power of the first water pump to Pa 2;
when B > B2, the controller sets the starting power of the first water pump to Pa 3.
Further, when the controller controls a second water pump to be started to carry out active cooling on the storage battery pack, calculating a phase change material temperature difference delta Ts between the temperature Tp of a second phase change material in the center of the storage battery pack and the temperature parameter Ts of the second phase change material in the center of the storage battery pack, which are monitored by a second temperature sensor, determining the starting power of the second water pump according to the comparison result of the phase change material temperature difference and the preset phase change material temperature difference, and setting delta Ts = Tp-Ts;
wherein the controller is provided with a first preset phase-change material temperature difference C1, a second preset phase-change material temperature difference C2, a first starting power Pb1 of the second water pump, a second starting power Pb2 of the second water pump, and a third starting power Pb3 of the second water pump, wherein C1 is less than C2, Pb1 is less than Pb2 and less than Pb3,
when C is less than or equal to C2, the controller sets the starting power of the second water pump to Pb 1;
when C1 < C ≦ C2, the controller sets the starting power of the second water pump to Pb 2;
when C > C2, the controller sets the startup power of the second water pump to Pb 3.
Further, when the second water pump is started, the controller obtains the temperature change rate W of the phase change material within a preset time period t, sets W =ΔTp/t, and determines whether to adjust the starting power of the second water pump according to a comparison result of the temperature change rate W of the phase change material and the preset temperature change rate W0 of the phase change material,
if W is larger than W0, the controller judges that the starting power of the second water pump is adjusted;
if W is less than or equal to W0, the controller judges that the starting power of the second water pump is not adjusted;
when the controller judges that the starting power of the second water pump is adjusted, the controller calculates a change rate difference delta W between the temperature change rate W of the phase change material and a preset temperature change rate W0 of the phase change material, sets delta W = W-W0, determines a corresponding power adjusting coefficient according to a comparison result of the change rate difference and the preset change rate difference, adjusts the starting power of the second water pump, sets the adjusted power of the second water pump to be Pb4, sets Pb4= Pbj xKi, wherein Ki is the ith power adjusting coefficient, and j =1, 2, 3.
Further, when the controller finishes regulating the second water pump, the regulated power Pb4 of the water pump is compared with the rated power Pe of the water pump, if Pb4 is more than or equal to Pe, the controller acquires the starting state of the third water pump, starts the third water pump when the third water pump is not started or regulates the power of the third water pump when the third water pump is started,
when the third water pump is in a closed state, the controller calculates a power difference value delta P between the regulated water pump power Pb4 and the rated power Pe of the water pump, sets delta P = Pb4-Pe, determines corresponding starting power according to a comparison result of the power difference value and a preset power difference value,
wherein, the controller is provided with a first preset power difference delta P1, a second preset power difference delta P2, a first starting power Pc1 of the third water pump, a second starting power Pc2 of the third water pump and a third starting power Pc3 of the third water pump, wherein, the delta P1 is less than delta P2, the Pc1 is less than the Pc2 and less than the Pc3,
when the delta P is less than or equal to the delta P1, the controller sets the starting power of the third water pump as Pc 1;
when the delta P1 is less than or equal to the delta P2, the controller sets the starting power of the third water pump to be Pc 2;
when Δ P >. Δ P2, the controller sets the starting power of the third water pump to Pc 3.
Further, when the controller determines to adjust the power of the third water pump, the controller calculates a power difference Δ P between the adjusted water pump power Pb4 and a rated power Pe of the water pump, sets Δ P = Pb4-Pe, determines a corresponding power adjustment coefficient according to a comparison result between the power difference and a preset power difference, adjusts the starting power of the third water pump, sets the adjusted power of the third water pump to be Pc4, sets 4= Pcm × Ki, and sets m =1, Pc2, and Pc 3.
The building energy supply subsystem comprises a building, a fifth water outlet pipe and a fifth water return pipe are connected with the building and the heat storage water tank, a third stop valve and a fifth water pump are arranged on the fifth water outlet pipe, the fifth water outlet pipe is connected with the soil source heat pump through a sixth water outlet pipe, the fifth water return pipe is connected with the soil source heat pump through a sixth water return pipe, and a fourth stop valve and a sixth water pump are arranged on the fifth water outlet pipe;
the controller is further connected with the third cut-off valve and the fifth water pump and used for controlling the third cut-off valve to be opened and the fifth water pump to be started so that the heat storage water tank and the building energy supply subsystem can exchange heat.
Further, paraffin with the phase change temperature of 23-25 ℃ is selected as the first phase change material filled below one side of the heat absorbing plate far away from the photovoltaic cell panel;
the second phase change material at the center of the storage battery pack is a composite phase change material of paraffin RT35 and expanded graphite, and the phase change temperature is 33-35 ℃;
the heat exchange working medium in the solar subsystem and the electric heating dual-storage subsystem is a mixture of water and antifreeze glycol, and the mixture ratio of the water to the antifreeze glycol is as follows: ethylene glycol =6: 4.
Compared with the prior art, the invention has the beneficial effects that the controller monitors the working medium outlet temperature of the H-shaped microchannel heat exchange pipeline at the back of the photovoltaic cell panel and the working medium temperature in the heat storage water tank through the first temperature sensor and the third temperature sensor, judges whether the first water pump needs to be started for active cooling according to the difference between the two temperatures, and then adjusts the starting power of the first water pump according to the ratio of the two temperature differences to the temperature parameter, so that the control precision of the temperature of the double-storage system is improved, and the operating efficiency of the soil source heat pump is improved.
Particularly, the temperature of the second phase change material in the center of the storage battery pack is monitored by the second temperature sensor, whether the second water pump needs to be started or not is judged according to the comparison between the temperature value and the temperature parameter, the starting power of the second water pump is further adjusted according to the ratio of the temperature value to the temperature parameter, photovoltaic heat and battery heat are further effectively recovered, the electric energy conversion rate of the photovoltaic panel battery is ensured, the service life of the battery is maximized, and the energy consumption of a system is reduced.
Particularly, when the adjusting power of the second water pump is larger than or equal to the rated power, the controller can acquire the starting state of the third water pump, the third water pump is started when the third water pump is not started, or the power of the third water pump is adjusted when the third water pump is started, the heat dissipation energy consumption of the system is further reduced through the control of the power, the soil temperature is kept stable, and the heating and cooling of the building are guaranteed.
Furthermore, the first on-off valve and the third water pump are opened in summer, the third on-off valve and the fifth water pump are closed, hot water in the heat storage water tank is stored in the heat preservation and energy storage device through the first on-off valve and the third water pump through the S-shaped coil pipe, and therefore cooling in summer of the building is guaranteed; the first on-off valve, the third water pump, the third on-off valve and the fifth water pump are opened in winter, the building is heated by utilizing photovoltaic heat, battery heat and heat stored in the heat-insulation energy storage device, if the temperature does not meet the heating requirement, the second on-off valve, the fourth water pump, the fourth on-off valve and the sixth water pump are continuously opened, and heat is supplied through the soil source heat pump, so that heating in winter and cooling in summer of the building are further guaranteed, and diversification of system functions is realized.
Furthermore, the soil source heat pump is used as a heat source for supplementing in winter in severe cold and a cold source for cooling in summer, electricity generated by the photovoltaic panel is prestored in the storage battery and is supplied to system equipment and a building, and the unfavorable heat generated by the photovoltaic panel and the storage battery is collected in an active and passive coupling mode combining phase change materials and liquid cooling, so that the system is used for building heating in winter and supplementing soil heat in summer, natural renewable energy is further utilized in different seasons, and the investment cost is reduced by sharing one set of system in winter and summer.
Furthermore, the phase-change material is added to the back of the photovoltaic panel and the battery, an active-passive coupling mode is adopted, and the redundant heat in the phase-change material is taken away by using the heat exchange working medium in the H-shaped micro-channel heat exchange pipeline along with the temperature rise in the daytime, so that the photovoltaic heat and the battery heat are effectively recovered, the electric energy conversion rate of the photovoltaic panel battery is ensured, the battery service life is maximized, and the energy consumption of the system is reduced.
Further, compared with the traditional heat pump energy supply system, the invention utilizes the natural cold source/heat source of the soil to establish the soil source energy storage device, thereby realizing cross-season energy storage, reducing the heat dissipation energy consumption of the system, maintaining the stable temperature of the soil, further improving the COP of the ground source heat pump, and simultaneously heating and cooling the building.
Drawings
FIG. 1 is a schematic diagram of an electric-heating double-storage energy supply system of a solar energy coupling soil source heat pump according to the invention;
FIG. 2 is a plan view of a photovoltaic photo-thermal unit structure of an electric heating double-energy-storage and supply system of the solar energy coupling soil source heat pump;
FIG. 3 is a plan view of a phase change thermal storage unit of the electric heating double-energy storage and supply system of the solar energy coupled ground source heat pump according to the present invention;
fig. 4 is a structural diagram of an electric heating dual-storage system of the electric heating dual-storage energy supply system of the solar energy coupling soil source heat pump.
Detailed Description
In order that the objects and advantages of the invention will be more clearly understood, the invention is further described below with reference to examples; it should be understood that the specific embodiments described herein are merely illustrative of the invention and do not delimit the invention.
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principles of the present invention, and do not limit the scope of the present invention.
It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Referring to fig. 1-4, fig. 1 is a schematic diagram of an electric heating dual-storage energy supply system of a solar energy coupled ground source heat pump according to the present invention; FIG. 2 is a plan view of a photovoltaic photo-thermal unit structure of an electric heating double-energy-storage and supply system of the solar energy coupling soil source heat pump; FIG. 3 is a plan view of a phase change heat storage unit structure of an electric heating double-energy storage and supply system of the solar energy coupling soil source heat pump; fig. 4 is a structural diagram of an electric heating dual-storage system of the electric heating dual-storage energy supply system of the solar energy coupling soil source heat pump.
The electric heating double-storage energy supply system of the solar energy coupling soil source heat pump comprises a solar subsystem, an electric heating double-storage subsystem, a control subsystem, a soil energy storage subsystem, a soil source heat pump and a building energy supply subsystem.
The solar subsystem comprises a photovoltaic photo-thermal unit 1, a first water outlet pipe 34 and a first water return pipe 35 which are connected with the photovoltaic photo-thermal unit 1, a first temperature sensor 7 arranged on the first water outlet pipe 34, a first electromagnetic valve 8 arranged on the first water outlet pipe 34, and a first water pump 9 arranged on the first water return pipe 35;
the photovoltaic photo-thermal unit comprises a photovoltaic cell panel 2, a heat absorbing plate 3 arranged on one side of the photovoltaic cell panel 2, a heat insulating layer 5 filled with a first phase change material 4 and arranged on one side of the first phase change material 4 far away from the heat absorbing plate 3, wherein the lower side of one side of the heat absorbing plate 3 far away from the photovoltaic cell panel 2 is filled with the first phase change material 4, the heat insulating layer 5 is arranged on one side of the first phase change material 4 far away from the heat absorbing plate 3, an H-shaped micro-channel heat exchange pipeline 6 is placed in the first phase change material 4, and heat exchange working media flow through the H-shaped micro-channel heat exchange pipeline 6 and then flow to heat exchange working media in a heat storage water tank 20 for heat exchange.
The electric heating double-storage subsystem comprises a photovoltaic cell panel 2, a solar controller 10 connected with the photovoltaic cell panel 2, a storage battery pack 15 connected with the solar controller 10, a storage battery pack heat recovery module 17 coated outside each storage battery in the storage battery pack 15, a second temperature sensor 12 arranged above the center of the storage battery pack 15, an inverter 32 connected with the storage battery pack 15, a second water return pipe 36 and the storage battery pack 15 are connected with a second water outlet pipe 37, a second electromagnetic valve 11 is arranged on the second water outlet pipe 37, and a second water pump 18 is arranged on the second water return pipe 36;
the storage battery pack heat recovery module 17 comprises a hollow cooling plate 13 arranged at the central part between two adjacent storage batteries of the storage battery pack 15 and a metal shell 16 coated outside the storage battery pack 15, and a second phase change material 14 is filled in a gap between the hollow cooling plate 13 and the adjacent storage battery and a gap between the storage battery and the metal shell;
the second temperature sensor 12 is used for measuring the central temperature of a second phase change material 14 in the storage battery pack heat recovery module 17, the second phase change material 14 absorbs heat generated by the storage battery pack 15 in the charging and discharging processes of the storage battery pack 15, and the heat is transmitted to the heat storage water tank 20 through a working medium in the cooling plate 13;
in the embodiment of the invention, the photovoltaic cell panel 2 in the solar subsystem and the electric heating dual-storage subsystem is the same device.
The control subsystem comprises a controller 19, the controller 19 is respectively connected with the first temperature sensor 7, the second temperature sensor 12, the third temperature sensor 21, the first electromagnetic valve 8, the first water pump 9, the second electromagnetic valve 11, the second water pump 18, the first on-off valve 22, the second on-off valve 25, the third water pump 23 and the fourth water pump 24, and the controller 19 is used for respectively controlling the first electromagnetic valve 8, the first water pump 9, the second electromagnetic valve 11, the second water pump 18, the first on-off valve 22, the second on-off valve 25, the third water pump 23 and the fourth water pump 24; after the controller 19 receives the monitoring temperatures of the first temperature sensor 7 and the third temperature sensor 21, a closing or opening signal is output according to the two temperature differences and transmitted to the first electromagnetic valve 8 and the first water pump 9; when the controller 19 receives the temperature value of the second temperature sensor 12, after comparing the temperature value with the temperature parameter in the controller 19, the controller outputs a close/open electric signal and transmits the close/open electric signal to the second electromagnetic valve 11 and the second water pump 18;
and the soil energy storage subsystem comprises a heat preservation energy storage device 33, the heat preservation energy storage device 33 and the heat storage water tank 20 are connected with a third water outlet pipe 38 and a third water return pipe 39, and the third water return pipe 39 is provided with a first on-off valve 22 and a third water pump 23.
The soil source heat pump comprises a fourth water outlet pipe 40 and a fourth water return pipe 41 which are connected with the heat preservation energy storage device 33, wherein a second on-off valve 25 is arranged on the fourth water return pipe 41, and a fourth water pump 24 is arranged on the fourth water outlet pipe 40.
The soil source heat pump is used for exchanging heat with the heat preservation energy storage device 33.
The building energy supply subsystem comprises a building 30, wherein the building 30 and the heat storage water tank 20 are connected with a fifth water outlet pipe 42 and a fifth water return pipe 43, the fifth water outlet pipe 42 is provided with a third breaking valve 26 and a fifth water pump 27, the fifth water outlet pipe 42 is connected with the soil source heat pump through a sixth water outlet pipe 44, the fifth water return pipe 43 is connected with the soil source heat pump through a sixth water return pipe 45, and the fifth water outlet pipe 42 is provided with a fourth breaking valve 28 and a sixth water pump 29.
The controller 19 is further connected to the third cut-off valve 26 and the fifth water pump 27, so as to control the third cut-off valve 26 to be opened and the fifth water pump 27 to be started, so that the hot water storage tank 20 exchanges heat with the building energy supply subsystem.
In the embodiment of the invention, the controller calculates the difference between the working medium outlet temperature Tc of the H-shaped micro-channel heat exchange pipeline 6 at the back of the photovoltaic cell panel 2 measured by the first temperature sensor 7 and the working medium temperature Tw in the heat storage water tank 20 measured by the third temperature sensor 21 when the monitoring temperature of the first temperature sensor continuously rises,
when Tc-Tw is more than or equal to Delta TH, the controller 19 judges that the active cooling circulation needs to be started, and transmits starting signals to the first electromagnetic valve 8 and the first water pump 9 through signal lines;
the controller 19 determines that active cooling is not required when Tc-Tw <. Δ TL, which is a temperature parameter that does not require active cooling, is supplied with a turn-off signal through the signal line to the first solenoid valve 8 and the first water pump 9, where Δ TH turns on the temperature parameter of active cooling.
In the embodiment of the present invention, when it is determined that the active cooling cycle needs to be started, the controller 19 calculates a ratio B between a difference between a working medium outlet temperature Tc of the H-shaped microchannel heat exchange conduit 6 at the back of the photovoltaic cell panel 2, which is measured by the first temperature sensor 7, and a working medium temperature Tw in the heat storage water tank 20, which is measured by the third temperature sensor 21, and a temperature parameter Δ TH at which the active cooling is started, sets B = Tc-Tw/Δ TH, and determines the starting power of the first water pump 9 according to a comparison result between the ratio and a preset ratio,
wherein, the controller 19 is provided with a first preset ratio B1, a second preset ratio B2, a first water pump first starting power Pa1, a first water pump second starting power Pa2 and a first water pump third starting power Pa3, wherein B1 is less than B2, Pa1 is less than Pa2 and less than Pa3,
when B is less than or equal to B1, the controller 19 sets the starting power of the first water pump 9 to Pa 1;
when B1 < B ≦ B2, the controller 19 sets the starting power of the first water pump 9 to Pa 2;
when B > B2, the controller 19 sets the starting power of the first water pump 9 to Pa 3.
The temperature difference parameters within the controller 19 described in this example are Δ TH =5 ℃ and Δ TL =2 ℃.
In the embodiment of the present invention, the controller 19 receives the temperature value of the second temperature sensor 12, where the temperature value is the temperature Tp of the second phase change material 14 in the center of the battery pack, which is monitored by the second temperature sensor 12, the controller 19 is provided with a temperature parameter Ts of the second phase change material 14 in the center of the battery pack,
when Tp is more than or equal to Ts, the second electromagnetic valve 11 and the second water pump 18 controlled by the controller 19 are opened to actively cool the storage battery pack 15.
In the embodiment of the present invention, when the controller 19 controls the second water pump 18 to be started to perform active cooling on the storage battery pack 15, the phase change material temperature difference Δ Ts between the temperature Tp of the second phase change material 14 in the center of the storage battery pack 15 monitored by the second temperature sensor 12 and the temperature parameter Ts of the second phase change material 14 in the center of the storage battery pack 15 is calculated, the starting power of the second water pump is determined according to the comparison result between the phase change material temperature difference and the preset phase change material temperature difference, and Δ Ts = Tp-Ts;
wherein the controller 19 is provided with a first preset phase-change material temperature difference C1, a second preset phase-change material temperature difference C2, a first starting power Pb1 of the second water pump, a second starting power Pb2 of the second water pump, and a third starting power Pb3 of the second water pump, wherein C1 is less than C2, Pb1 is less than Pb2 and less than Pb3,
when C is less than or equal to C2, the controller 19 sets the starting power of the second water pump 18 to Pb 1;
when C1 < C ≦ C2, the controller 19 sets the starting power of the second water pump 18 to Pb 2;
when C > C2, the controller 19 sets the starting power of the second water pump 18 to Pb 3.
Ts =36 ℃ in the present example.
In the embodiment of the present invention, when the controller 19 finishes starting the second water pump 18, the temperature change rate W of the phase change material of the second phase change material 14 within a preset time period t is obtained, W =Δtp/t is set, and whether to adjust the starting power of the second water pump is determined according to a comparison result between the temperature change rate W of the phase change material and the preset temperature change rate W0 of the phase change material,
if W is larger than W0, the controller 19 determines to adjust the starting power of the second water pump 18;
if W is less than or equal to W0, the controller 19 determines that the starting power of the second water pump 18 is not adjusted.
Specifically, when determining to adjust the starting power of the second water pump 18, the controller 19 calculates a change rate difference Δ W between the phase change material temperature change rate W and a phase change material preset temperature change rate W0, sets Δ W = W-W0, determines a corresponding power adjustment coefficient according to a comparison result between the change rate difference and a preset change rate difference, and adjusts the starting power of the second water pump 18,
wherein, the controller 19 is also provided with a first preset change rate difference value delta W1, a second preset change rate difference value delta W2, a first power adjusting coefficient K1, a second power adjusting coefficient K2 and a third power adjusting coefficient K3, wherein, delta W1 is less than delta W2, 1 is more than K1 more than K2 more than K3 more than 1.2,
when Δ W ≦ Δ W1, the controller 19 determines that a power adjustment coefficient for power adjustment of the second water pump 18 is K1;
when the delta W1 is less than the delta W and less than the delta W2, the controller 19 judges that the power adjusting coefficient for adjusting the power of the second water pump 18 is K2;
when aw >. aw 2, the controller 19 determines that a power adjustment coefficient for power adjustment of the second water pump 18 is K3;
when the controller 19 determines that the power adjustment coefficient for power adjustment of the second water pump 18 is Ki, i =1, 2, 3 is set, the adjusted power of the second water pump 18 is set to Pb4, and Pb4= Pbj × Ki is set where j =1, 2, 3.
In the embodiment of the present invention, when the controller 19 finishes adjusting the second water pump 18, the adjusted water pump power Pb4 is compared with the water pump rated power Pe, and if Pb4 is greater than or equal to Pe, the controller 19 obtains the on state of the third water pump 23, starts the third water pump 23 when not being started, or adjusts the power of the third water pump 23 when being started.
Specifically, when the third water pump 23 is in the off state and the controller 19 determines to adjust the starting power of the third water pump 23, the power difference Δ P between the adjusted water pump power Pb4 and the water pump rated power Pe is calculated, Δ P = Pb4-Pe is set, and the corresponding starting power is determined based on the comparison result between the power difference and the preset power difference,
wherein, the controller 19 is provided with a first preset power difference value delta P1, a second preset power difference value delta P2, a first starting power Pc1 of the third water pump, a second starting power Pc2 of the third water pump and a third starting power Pc3 of the third water pump, wherein, the delta P1 is less than delta P2, the Pc1 is less than the Pc2 and less than the Pc3,
when Δ P ≦ Δ P1, the controller 19 sets the starting power of the third water pump 23 to Pc 1;
when the delta P1 is less than delta P and less than delta P2, the controller 19 sets the starting power of the third water pump 23 to be Pc 2;
when Δ P >. Δ P2, the controller 19 sets the starting power of the third water pump 23 to Pc 3.
Specifically, when the third water pump 23 is in the on state and the controller 19 determines to adjust the power of the third water pump 23, the power difference Δ P between the adjusted water pump power Pb4 and the water pump rated power Pe is calculated, Δ P = Pb4-Pe is set, and the start power of the third water pump 23 is adjusted by determining a corresponding power adjustment coefficient according to the comparison result between the power difference and a preset power difference,
wherein, the controller 19 is also provided with a first preset power difference value delta P3 and a second preset power difference value delta P4, wherein delta P3 is less than delta P4,
when Δ P ≦ Δ P3, the controller 19 determines that a power adjustment coefficient for power adjustment of the third water pump 23 is K1;
when Δ P3 is less than Δ P ≦ Δ P4, the controller 19 determines that the power adjustment coefficient for power adjustment of the third water pump 23 is K2;
when Δ P >/Δ P4, the controller 19 determines that a power adjustment coefficient for power adjustment of the third water pump 23 is K3;
when the controller 19 determines that the rate adjustment coefficient for adjusting the power of the third water pump 23 is Ki, the adjusted power of the third water pump 23 is set to Pc4, Pc4= Pcm × Ki, and m =1, 2, 3.
In the embodiment of the invention, the first phase change material 4 filled below one side of the heat absorbing plate 3 far away from the photovoltaic cell panel 2 is paraffin with the phase change temperature of 23-25 ℃;
the second phase change material 14 at the center of the storage battery pack 15 is a composite phase change material of paraffin RT35 and expanded graphite, and the phase change temperature is 33-35 ℃;
the heat exchange working medium in the solar subsystem and the electric heating dual-storage subsystem is a mixture of water and antifreeze glycol, and the mixture ratio of the water to the antifreeze glycol is as follows: ethylene glycol =6: 4.
The working process is as follows: in summer, the first on-off valve 22, the third water pump 23 are opened, the third on-off valve 26 and the fifth water pump 27 are closed, hot water in the heat storage water tank 20 stores heat in the heat preservation energy storage device 33 through the first on-off valve 22 and the third water pump 23 through the S-shaped coil pipe, the building 30 is cooled through the soil source heat pump 31, heat in the building is also stored in the heat preservation energy storage device 33, heat stored in soil in summer is used for maintaining heat balance of the soil, and the efficiency of the soil source heat pump is ensured; in winter, the first on-off valve 22, the third water pump 23, the third on-off valve 26 and the fifth water pump 27 are opened, photovoltaic heat, battery heat and heat stored in the heat preservation and energy storage device 33 are used for heating a building 30, if the temperature does not meet the heating requirement, the second on-off valve 25, the fourth water pump 24, the fourth on-off valve 28 and the sixth water pump 29 are opened, heat is supplied through the soil source heat pump 31, electricity generated by the photovoltaic cell panel 2 comes through the soil source heat pump 31 in summer, the tail end of the building 30 adopts a fan coil system, the heating temperature in winter is 55 ℃, and the temperature of chilled water in summer is 7 ℃.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention; various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a two energy storage and supply systems of electric heat of solar energy coupling soil source heat pump which characterized in that includes:
the solar subsystem comprises a photovoltaic photo-thermal unit, a first water outlet pipe and a first water return pipe which are connected with the photovoltaic photo-thermal unit, a first temperature sensor arranged on the first water outlet pipe, a first electromagnetic valve arranged on the first water outlet pipe and a first water pump arranged on the first water return pipe; the photovoltaic photo-thermal unit comprises a photovoltaic cell panel, a heat absorbing plate arranged on one side of the photovoltaic cell panel, a first phase change material filled below one side, far away from the photovoltaic cell panel, of the heat absorbing plate and an insulating layer arranged on one side, far away from the first phase change material, of the heat absorbing plate, wherein an H-shaped micro-channel heat exchange pipeline is arranged in the first phase change material and used for loading a heat exchange working medium to exchange heat with the heat exchange working medium in the heat storage water tank;
the electric heating double-storage subsystem comprises a photovoltaic cell panel, a solar controller connected with the photovoltaic cell panel, a storage battery pack connected with the solar controller, a second water outlet pipe and a second water return pipe connected with the storage battery pack, a storage battery pack heat recovery module coated outside each storage battery in the storage battery pack, a second temperature sensor arranged at the center of the storage battery pack and a first inverter connected with the storage battery pack; the storage battery pack heat recovery module comprises a hollow cooling plate arranged in the center between two adjacent storage batteries of the storage battery pack and a metal shell coated outside the storage battery pack, and second phase change materials are filled in gaps between the hollow cooling plate and the adjacent storage batteries and gaps between the storage batteries and the metal plate;
the soil energy storage subsystem comprises a heat-preservation energy storage device, a third water outlet pipe and a third water return pipe, wherein the third water outlet pipe and the third water return pipe are connected with the heat-preservation energy storage device;
the soil source heat pump comprises a fourth water outlet pipe and a fourth water return pipe which are connected with the heat-preservation energy storage device, a second on-off valve is arranged on the fourth water return pipe, a fourth water pump is arranged on the fourth water outlet pipe, and the soil source heat pump is used for exchanging heat with the heat-preservation energy storage device;
the control subsystem comprises a controller, wherein the controller is respectively connected with the first temperature sensor, the second temperature sensor, the third temperature sensor, the first electromagnetic valve, the first water pump, the second electromagnetic valve, the second water pump, the first on-off valve, the second on-off valve, the third water pump and the fourth water pump and is used for respectively controlling the first electromagnetic valve, the first water pump, the second electromagnetic valve, the second water pump, the first on-off valve, the second on-off valve, the third water pump and the fourth water pump; the temperature sensor is used for outputting a closing signal or an opening signal to the first electromagnetic valve and the first water pump according to the received monitoring temperature difference output by the first temperature sensor and the third temperature sensor, and outputting a closing signal or an opening signal to the second electromagnetic valve and the second water pump according to the received temperature value of the second temperature sensor.
2. The electric heating double-storage energy supply system of the solar-energy-coupled ground-source heat pump as claimed in claim 1, wherein the second temperature sensor is used for measuring the central temperature of a second phase change material in the storage battery pack heat recovery module, and the second phase change material absorbs heat generated by the storage battery pack in the charging and discharging processes of the storage battery pack and transmits the heat to the heat storage water tank through a heat exchange working medium in the cooling plate.
3. The electric-heating double-storage energy supply system of the solar-energy-coupled soil-source heat pump as claimed in claim 2, wherein the controller calculates the difference between the working medium outlet temperature Tc of the H-shaped microchannel heat exchange pipeline at the back of the photovoltaic cell panel measured by the first temperature sensor and the working medium temperature Tw in the heat storage water tank measured by the third temperature sensor when the monitored temperature of the first temperature sensor continuously rises, when Tc-Tw ≧ DeltaTH, the controller determines that active cooling circulation needs to be started, and transmits a start signal to the first electromagnetic valve and the first water pump through a signal line, when Tc-Tw < DeltaTL, the controller determines that active cooling does not need to be performed, and transmits a stop signal to the first electromagnetic valve and the first water pump, wherein DeltaTH is a temperature parameter for starting active cooling, TH =5 ℃, and DeltaTL is a temperature parameter for which active cooling does not need to be performed, Δ TL =2 ℃;
the temperature value is a temperature value Tp of a second phase change material in the center of the storage battery pack monitored by the second temperature sensor, a preset temperature value Ts of the second phase change material in the center of the storage battery pack is set in the controller, and when the Tp is larger than or equal to the Ts, the second electromagnetic valve and the second water pump controlled by the controller are started to actively cool the storage battery pack.
4. The electric-heating double-energy-storage and supply system of the solar-energy-coupled ground-source heat pump as claimed in claim 3, wherein when the controller determines that the active cooling cycle needs to be started, the controller calculates a ratio B of a difference between a working medium outlet temperature Tc of the H-shaped microchannel heat exchange pipeline at the back of the photovoltaic cell panel measured by the first temperature sensor and a working medium temperature Tw in the heat storage water tank measured by the third temperature sensor and a temperature parameter Deltath, sets B = Tc-Tw/Deltath, and determines the starting power of the first water pump according to a comparison result of the ratio and a preset ratio,
wherein the controller is provided with a first preset ratio B1, a second preset ratio B2, first starting power Pa1 of the first water pump, second starting power Pa2 of the first water pump and third starting power Pa3 of the first water pump, wherein B1 is more than B2, Pa1 is more than Pa2 and more than Pa3,
when B is less than or equal to B1, the controller sets the starting power of the first water pump to Pa 1;
when B1 < B ≦ B2, the controller sets the starting power of the first water pump to Pa 2;
when B > B2, the controller sets the starting power of the first water pump to Pa 3.
5. The electric heating double-energy storage and supply system of the solar-energy-coupled ground-source heat pump as claimed in claim 4, wherein when the controller controls the second water pump to be started to perform active cooling on the storage battery pack, the temperature Tp of the second phase-change material in the center of the storage battery pack, which is monitored by the second temperature sensor, and the temperature difference Δ Ts of the phase-change material of the temperature parameter Ts of the second phase-change material in the center of the storage battery pack are calculated, the starting power of the second water pump is determined according to the comparison result of the temperature difference of the phase-change material and the preset temperature difference of the phase-change material, and Δ Ts = Tp-Ts;
wherein the controller is provided with a first preset phase-change material temperature difference C1, a second preset phase-change material temperature difference C2, a first starting power Pb1 of the second water pump, a second starting power Pb2 of the second water pump and a third starting power Pb3 of the second water pump, wherein C1 is more than C2, Pb1 is more than Pb2 and more than Pb3,
when C is less than or equal to C2, the controller sets the starting power of the second water pump to Pb 1;
when C1 < C ≦ C2, the controller sets the starting power of the second water pump to Pb 2;
when C > C2, the controller sets the startup power of the second water pump to Pb 3.
6. The electric heating double-storage energy supply system of the solar-energy-coupled soil source heat pump as claimed in claim 5, wherein the controller obtains the temperature change rate W of the phase change material of the second phase change material within a preset time period t when the second water pump is started, sets W =ΔTp/t, and determines whether to adjust the starting power of the second water pump according to the comparison result of the temperature change rate W of the phase change material and the preset temperature change rate W0 of the phase change material,
if W is larger than W0, the controller judges that the starting power of the second water pump is adjusted;
if W is less than or equal to W0, the controller judges that the starting power of the second water pump is not adjusted;
when judging that the starting power of the second water pump is adjusted, the controller calculates a change rate difference value delta W between the temperature change rate W of the phase change material and a preset temperature change rate W0 of the phase change material, sets delta W = W-W0, determines a corresponding power adjusting coefficient according to a comparison result between the change rate difference value and the preset change rate difference value, adjusts the starting power of the second water pump, sets the adjusted power of the second water pump as Pb4, sets Pb4= Pbj xKi, wherein Ki is the ith power adjusting coefficient, and j =1, 2, 3.
7. The electric-heating double-storage energy supply system of the solar-energy-coupled soil source heat pump as claimed in claim 6, wherein the controller compares the regulated water pump power Pb4 with the rated water pump power Pe when the regulation of the second water pump is completed, if Pb4 is greater than or equal to Pe, the controller obtains the starting state of the third water pump, starts the third water pump when the third water pump is not started or regulates the power of the third water pump when the third water pump is started,
when the third water pump is in a closed state, the controller calculates the power difference value delta P between the regulated water pump power Pb4 and the rated power Pe of the water pump, sets delta P = Pb4-Pe, determines corresponding starting power according to the comparison result of the power difference value and a preset power difference value,
wherein, the controller is provided with a first preset power difference delta P1, a second preset power difference delta P2, a first starting power Pc1 of the third water pump, a second starting power Pc2 of the third water pump and a third starting power Pc3 of the third water pump, wherein, the delta P1 is less than delta P2, the Pc1 is less than the Pc2 and less than the Pc3,
when the delta P is less than or equal to the delta P1, the controller sets the starting power of the third water pump to be Pc 1;
when the delta P1 is less than or equal to the delta P2, the controller sets the starting power of the third water pump to be Pc 2;
when Δ P >. Δ P2, the controller sets the starting power of the third water pump to Pc 3.
8. The electric-thermal double energy storage and supply system of the solar-coupled soil source heat pump according to claim 7, wherein the controller calculates a power difference Δ P between the regulated water pump power Pb4 and a water pump rated power Pe when determining to regulate the power of the third water pump, sets Δ P = Pb4-Pe, determines a corresponding power regulation coefficient according to a comparison result of the power difference and a preset power difference to regulate the starting power of the third water pump, sets the regulated power of the third water pump to be Pc4, sets Pc4= Pcm x Ki, and sets m =1, 2, 3.
9. The electric heating double-storage energy supply system of the solar energy coupled soil source heat pump is characterized by further comprising a building energy supply subsystem, wherein the building energy supply subsystem comprises a building, a fifth water outlet pipe and a fifth water return pipe are connected with the heat storage water tank, a third cut-off valve and a fifth water pump are arranged on the fifth water outlet pipe, the fifth water outlet pipe is connected with the soil source heat pump through a sixth water outlet pipe, the fifth water return pipe is connected with the soil source heat pump through a sixth water return pipe, and a fourth cut-off valve and a sixth water pump are arranged on the fifth water outlet pipe;
the controller is further connected with the third cut-off valve and the fifth water pump and used for controlling the third cut-off valve to be opened and the fifth water pump to be started so that the heat storage water tank and the building energy supply subsystem can exchange heat.
10. The electric-heating double-energy-storage and supply system of the solar-energy-coupled soil-source heat pump as claimed in claim 9, wherein the first phase-change material filled below the side of the heat absorbing plate far away from the photovoltaic cell panel is paraffin with the phase-change temperature of 23-25 ℃;
the second phase change material at the center of the storage battery pack is a composite phase change material of paraffin RT35 and expanded graphite, and the phase change temperature is 33-35 ℃;
the heat exchange working medium in the solar subsystem and the electric heating dual-storage subsystem is a mixture of water and antifreeze glycol, and the mixture ratio of the water to the antifreeze glycol is as follows: ethylene glycol =6: 4.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205566216U (en) * | 2016-01-22 | 2016-09-07 | 江苏中圣高科技产业有限公司 | Solar photovoltaic waste heat recovery device that generates electricity |
| CN107579306A (en) * | 2017-08-22 | 2018-01-12 | 合肥国轩高科动力能源有限公司 | A kind of battery module cooled down based on air and phase-change material |
| CN110176655A (en) * | 2019-05-16 | 2019-08-27 | 江苏金派克新能源有限公司 | Novel lithium battery heat dissipation heat-insulation system |
| CN210837820U (en) * | 2019-08-31 | 2020-06-23 | 风帆有限责任公司 | 48V system lithium ion battery module |
| CN114183801A (en) * | 2021-12-28 | 2022-03-15 | 重庆大学 | House temperature control method |
| CN216278265U (en) * | 2021-11-24 | 2022-04-12 | 远航新源(北京)科技有限公司 | Wind power generation energy storage heating system |
-
2022
- 2022-08-29 CN CN202211042549.8A patent/CN115127165B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205566216U (en) * | 2016-01-22 | 2016-09-07 | 江苏中圣高科技产业有限公司 | Solar photovoltaic waste heat recovery device that generates electricity |
| CN107579306A (en) * | 2017-08-22 | 2018-01-12 | 合肥国轩高科动力能源有限公司 | A kind of battery module cooled down based on air and phase-change material |
| CN110176655A (en) * | 2019-05-16 | 2019-08-27 | 江苏金派克新能源有限公司 | Novel lithium battery heat dissipation heat-insulation system |
| CN210837820U (en) * | 2019-08-31 | 2020-06-23 | 风帆有限责任公司 | 48V system lithium ion battery module |
| CN216278265U (en) * | 2021-11-24 | 2022-04-12 | 远航新源(北京)科技有限公司 | Wind power generation energy storage heating system |
| CN114183801A (en) * | 2021-12-28 | 2022-03-15 | 重庆大学 | House temperature control method |
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