CN118960069A - A cogeneration system of PVT heat pump soil cross-season energy storage coupled with municipal heat source suitable for traditional radiators - Google Patents
A cogeneration system of PVT heat pump soil cross-season energy storage coupled with municipal heat source suitable for traditional radiators Download PDFInfo
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- 239000002689 soil Substances 0.000 title claims abstract description 48
- 238000004146 energy storage Methods 0.000 title claims abstract description 12
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- 238000010438 heat treatment Methods 0.000 claims abstract description 81
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- 238000010248 power generation Methods 0.000 claims description 27
- 238000005338 heat storage Methods 0.000 claims description 23
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- 230000005611 electricity Effects 0.000 claims description 6
- 239000003507 refrigerant Substances 0.000 claims description 5
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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
- F24D11/00—Central heating systems using heat accumulated in storage masses
- F24D11/02—Central heating systems using heat accumulated in storage masses 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
- 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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Abstract
The invention belongs to the technical field of heat supply engineering, solar photovoltaic photo-thermal and shallow geothermal energy comprehensive utilization, and discloses a PVT heat pump soil cross-season energy storage coupling municipal heat source cogeneration system suitable for a traditional radiator, which comprises a municipal thermodynamic system, a solar PVT heat pump soil cross-season energy storage system, a tail end radiator system and an intelligent monitoring control system; the municipal thermodynamic system comprises a municipal thermodynamic primary network, a municipal thermodynamic secondary network, a circulating water pump, a plate heat exchanger, a temperature sensor and an electric valve; the solar PVT heat pump soil quaternary energy storage system comprises a solar PVT array, a solar heat exchange unit, a buried pipe system, an ammeter, an inverter, a heating heat pump unit and an electric valve group; the intelligent monitoring control system comprises a temperature sensor, an electric valve, a heating heat pump unit and a circulating water pump. The invention realizes the full utilization of solar energy, air energy and shallow geothermal energy, saves energy and reduces carbon, and ensures the tail end heating effect.
Description
Technical Field
The invention belongs to the technical field of heat supply engineering, solar photovoltaic photo-thermal and shallow geothermal energy comprehensive utilization, and relates to a heat and power cogeneration system suitable for a PVT heat pump soil cross-season energy storage coupling municipal heat source of a traditional radiator.
Background
Along with the wide popularization and application of clean energy and the serious influence of excessive carbon emission on ecological environment, the coupling function of various clean energy sources of solar energy and shallow geothermal energy becomes the key development direction of researchers. The existing municipal heat source has the problems of large heat loss of a pipe network, poor flexibility of adjustment, uneven heat source distribution and the like, so that a terminal heating system cannot meet the actual demand of terminal heating under certain conditions, and in order to ensure the use experience of a user, the resource lifting efficiency is saved; the traditional municipal heat source mostly comes from coal-fired, gas-fired or electric boilers, the operation cost is high, the environment is polluted greatly, the soil in China is fully not developed and utilized, the solar energy can be stored in the soil under the condition that the annual temperature of the soil is unchanged, the soil temperature of the ground source side is improved during heating in winter, the operation efficiency of the ground source heat pump unit is improved, the renewable energy sources can be fully utilized, and the operation cost of the municipal heat source is saved. However, in this field, single solar photovoltaic and photo-thermal technologies have technical drawbacks, resulting in low solar energy utilization. Many researchers have proposed energy schemes of coupling heat supply of various heat sources and municipal heat sources, such as a system for combining solar energy and various heat sources is proposed in the field, li Zhibing and the like have proposed a control and method of a double-heat-source heating device, huang Bo and the like have proposed a heating system and method for combining municipal heat supply pipe network and solar energy cross-season heat storage, chen Zongyuan and the like have proposed automatic switching of heat supply of double heat sources, wang Jiawei and the like have proposed a double-heat-source heating system and the like.
The researches utilize solar heat collectors to utilize heat storage pools to store heat in a cross-season mode or utilize systems and control methods of air source heat pumps, gas wall-mounted furnaces and the like coupled with traditional municipal heat sources to heat in winter. However, the solar heat collector can only generate heat, and can not fully exert the photoelectric conversion effect on solar energy, and the heat storage pool is influenced by a heat storage medium and needs to occupy a certain space.
Disclosure of Invention
Aiming at the problems, clean renewable energy solar energy, shallow geothermal energy and municipal heat source are used as heat sources of the system to supply heat to the tail end in a combined way. The invention provides a PVT heat pump soil cross-season energy storage coupling municipal heat source cogeneration system suitable for a traditional radiator, which has a plurality of operation modes according to different temperature working conditions in different seasons and can be flexibly switched; the solar PVT array can generate green electricity all the year round, the green electricity is preferentially used for a heat storage and energy supply system, the impact of electricity consumption peak period on a municipal power grid is reduced, and the redundant electric quantity can be used for building other electric equipment or be integrated into the national power grid; meanwhile, solar radiation heat energy and air heat energy absorbed by the solar PVT array are taken as a heat accumulator, a professional secondary refrigerant is taken as a flowing medium, the heat energy absorbed by PVT is stored in the soil, and when the temperature of a municipal thermal secondary network water supply pipe is lower than 60 ℃ and the heating requirement of the tail end in winter can not be met, the heat stored in the soil is directly taken as a low-grade heat source of a ground source heat pump unit, and hot water at 60 ℃ is produced for heating. The invention realizes the full utilization of solar energy, air energy and shallow geothermal energy, saves energy and reduces carbon, and ensures the tail end heating effect.
The technical scheme of the invention is as follows:
A PVT heat pump soil cross-season energy storage coupling municipal heat source cogeneration system suitable for a traditional radiator comprises a municipal thermodynamic system, a solar PVT heat pump soil cross-season energy storage system, an end radiator system and an intelligent monitoring control system;
The municipal thermodynamic system comprises a municipal thermodynamic primary network, a municipal thermodynamic secondary network, a circulating water pump, a plate heat exchanger, a temperature sensor and an electric valve; the solar PVT heat pump soil quaternary energy storage system comprises a solar PVT array, a solar heat exchange unit, a buried pipe system, an inverter, a heating heat pump unit, an electric valve, a temperature sensor and the like; the intelligent monitoring control system comprises a temperature sensor, an electric valve, a heating heat pump unit, a circulating water pump and other equipment start-stop linked monitoring control logic;
The municipal primary heat supply network 1 is connected with the primary network side of the plate heat exchanger 2 through a valve and a pipeline; the secondary network side water outlet of the plate heat exchanger 2 is connected with the water supply port of the tail end radiator system 7 by a pipeline sequentially through the first temperature sensor 3 and the first electric valve 4; the water return port of the tail end radiator system 7 is connected with the water return port of the secondary network side of the plate heat exchanger 2 through a first water pump 6 and a second electric valve 5 by a pipeline; the condenser side water outlet of the heating heat pump unit 10 is connected between the first electric valve 4 and the water supply port of the tail end radiator system 7 through a third electric valve 8 and is connected by a three-way pipe; the return water port of the condenser side of the heating heat pump unit 10 is connected between the first water pump 6 and the second electric valve 5 through the fourth electric valve 9, and is connected by a three-way pipe; the evaporator side inlet of the heating heat pump unit 10 is connected with a soil heat storage well 17 through a fifth electric valve 11, a second temperature sensor 21 and a second water pump 15 by pipelines; the evaporator side outlet of the heating heat pump unit 10 is connected with a soil heat storage well 17 through a sixth electric valve 12 by utilizing a pipeline; the PVT side outlet of the solar heat exchange unit 16 is connected with the solar PVT array 18; the ground source side inlet of the solar heat exchange unit 16 is divided into two branches, and one branch is connected between the outlet side of the evaporator of the heating heat pump unit 10 and the sixth electric valve 12 through a seventh electric valve 13 and is connected by a three-way pipe; the second branch is connected between the second water pump 15 and a water return port of the evaporator side of the heating heat pump unit 10 through a ninth electric valve 23 and is connected by a three-way pipe; the ground source side outlet of the solar heat exchange unit 16 is divided into two branches, and one branch is connected between the fifth electric valve 11 and the second water pump 15 through the third temperature sensor 22 and the eighth electric valve 14 and is connected through a three-way pipe; the second branch is connected between the outlet side of the evaporator of the heating heat pump set 10 and the sixth electric valve 12 through a third temperature sensor 22 and a tenth electric valve 24, and is connected by a three-way pipe; the solar PVT array 18 is used for directly converting solar energy into direct current electric energy by utilizing the solar photovoltaic effect under the power generation working condition, the direct current electric energy is converted into alternating current electric energy through the inverter 19, and an ammeter 20 is arranged between the inverter 19 and the power grid;
The power generation working condition of the solar PVT array 18 is that alternating current power generated by the cogeneration system is preferentially supplied to the plate heat exchanger 2, the first temperature sensor 3, the second temperature sensor 21, the third temperature sensor 22, the first electric valve 4, the second electric valve 5, the third electric valve 8, the fourth electric valve 9, the fifth electric valve 11, the sixth electric valve 12, the seventh electric valve 13, the eighth electric valve 14, the ninth electric valve 23, the tenth electric valve 24, the heating heat pump unit 10, the first water pump 6, the second water pump 15 and the solar heat exchanger unit 16 for use, and the redundant power is used for other electric equipment of the building or is integrated into a power grid.
The first electric valve 4, the second electric valve 5, the third electric valve 8, the fourth electric valve 9, the heating heat pump unit 10, the second water pump 15 and the first temperature sensor 3 are in interlocking switch; the fifth electrically operated valve 11, the sixth electrically operated valve 12, the seventh electrically operated valve 13, and the eighth electrically operated valve 14 are interlocked with the second temperature sensor 21 and the third temperature sensor 22.
The heating heat pump unit 10 is a ground source heat pump unit or a water source heat pump unit capable of heating, the refrigerant in the heating heat pump unit 10 is environment-friendly refrigerant, the valve is an electromagnetic on-off valve group, and the water pump is a vertical pipeline pump, a horizontal pipeline pump or a multistage pump.
The operation control strategy of the solar PVT heat pump soil cross-season energy storage coupling municipal heat source cogeneration system suitable for the traditional radiator is as follows:
Mode one: a solar PVT power generation and soil heat storage mode; the fifth electric valve 11, the sixth electric valve 12, the ninth electric valve 23, the tenth electric valve 24, the second water pump 15 and the solar heat exchanger unit 16 are opened; the solar PVT array 18 converts solar energy into alternating current energy through the inverter 19 for the electric equipment to use or be integrated into a national power grid in spring, summer and autumn; the solar PVT array 18 stores the absorbed solar radiation heat energy and air heat energy into the soil heat storage well 17 by utilizing the solar heat exchange unit 16 and the second water pump 15 for heating in winter.
Mode two: a solar PVT power generation and soil source heat pump heating mode; the third electric valve 8, the fourth electric valve 9, the fifth electric valve 11, the sixth electric valve 12, the first water pump 6, the second water pump 15, the tail end radiator system 7 and the heating heat pump unit 10 are opened; in winter, the solar PVT array 18 converts solar energy into alternating current energy through the inverter 19 for the electric equipment to use or is integrated into a national power grid; the heating heat pump unit 10 uses the second water pump 15 to raise the heat extracted from the soil heat storage well 17 as a low-grade heat source to a high-grade heat source, and produces hot water at 60 ℃ for use by the end radiator system 7.
Mode three: a solar PVT power generation and PVT heat pump heating mode; the third electric valve 8, the fourth electric valve 9, the seventh electric valve 13, the eighth electric valve 14, the first water pump 6, the second water pump 15, the tail end radiator system 7, the heating heat pump unit 10 and the solar heat exchanger unit 16 are opened; in winter, the solar PVT array 18 converts solar energy into alternating current energy through the inverter 19 for the electric equipment to use or is integrated into a national power grid; after the solar radiation heat energy and the air heat energy absorbed by the solar PVT array 18 are subjected to heat exchange through the solar heat exchange unit 16, the heat pump unit is conveyed to the heating heat pump unit 10 to serve as a low-grade heat source by utilizing the second water pump 15, and the heat pump unit is lifted to be a high-grade heat source by utilizing the reverse Carnot principle, so that hot water at 60 ℃ is produced for the tail end radiator system 7 to use.
Mode four: solar PVT power generation and municipal heat source heating modes; the municipal primary heat supply network 1, the plate heat exchanger 2, the first electric valve 4, the second electric valve 5, the first water pump 6 and the tail end radiator system 7 are opened; in winter, the solar PVT array 18 converts solar energy into alternating current energy through the inverter 19 for the electric equipment to use or is integrated into a national power grid; the municipal primary heat supply network 1 is converted into hot water at 60 ℃ by the plate heat exchanger 2, and is used by the terminal radiator system 7 by the first water pump 6.
The switching among the operation modes is considered according to the temperature change of the solar PVT array, the soil temperature change and the municipal thermal secondary network temperature synthesis, and the long-term stable, reliable and efficient operation of the system is ensured through the intelligent detection control system.
The invention has the beneficial effects that: the novel solar energy and air energy and shallow geothermal energy renewable energy sources are fully utilized, solar radiation heat energy and air heat energy are stored in soil, and adverse effects of soil temperature reduction caused by heat extraction from the soil in winter are avoided; meanwhile, the operation cost is reduced by monitoring the starting and stopping of the temperature control equipment and the valve in real time, and an unattended intelligent operation mode is realized; in addition, the solar PVT array can generate green electricity all the year round, so that the impact of electricity consumption peak period on municipal power grid is reduced, and meanwhile, the solar PVT array plays an important role in energy conservation and emission reduction.
Drawings
FIG. 1 is a schematic diagram of a system of the present invention;
FIG. 2 is a schematic diagram of a solar PVT power generation and soil heat storage mode system according to the invention;
FIG. 3 is a schematic diagram of a solar PVT power generation and soil source heat pump heating mode system of the present invention;
FIG. 4 is a schematic diagram of a solar PVT power generation and PVT heat pump heating mode system of the present invention;
FIG. 5 is a schematic diagram of a solar PVT power generation and municipal heat source heating mode system according to the invention;
in the figure: 1 municipal primary heat supply network, 2 plate heat exchangers, 3 first temperature sensors, 4 first electric valves, 5 second electric valves, 6 first water pumps, 7 end radiator systems, 8 third electric valves, 9 fourth electric valves, 10 heating heat pump units, 11 fifth electric valves, 12 sixth electric valves, 13 seventh electric valves, 14 eighth electric valves, 15 second water pumps, 16 solar heat exchanger units, 17 soil heat storage wells, 18 solar PVT arrays, 19 inverters, 20 electric meters, 21 second temperature sensors, 22 third temperature sensors, 23 ninth electric valves, 24 tenth electric valves and 25 fourth temperature sensors.
Detailed Description
The following describes the embodiments of the present invention further with reference to the drawings and technical schemes.
Fig. 2 shows a schematic diagram of a solar PVT power generation and soil heat storage mode system according to the present invention. The system consists of a fifth electric valve 11, a sixth electric valve 12, a second water pump 15, a solar heat exchanger unit 16, a soil heat storage well 17, a solar PVT array 18, an inverter 19, an ammeter 20, a second temperature sensor 21, a third temperature sensor 22, a ninth electric valve 23, a tenth electric valve 24 and a fourth temperature sensor 25; the ground source side inlet and outlet of the solar heat exchange unit 16 are connected through a second temperature sensor 21, a tenth electric valve 24, a sixth electric valve 12, a soil heat storage well 17, a fifth electric valve 11, a third temperature sensor 22, a second water pump 15 and a ninth electric valve 23 by pipelines; the PVT side of the solar heat exchange unit 16 is connected with the solar PVT array 18 through a fourth temperature sensor 25 by utilizing a pipeline; the power generation condition of the solar PVT array 18 utilizes the photovoltaic effect of solar energy to directly convert solar energy into direct current electric energy, and the direct current electric energy is converted into alternating current electric energy through the inverter 19.
As shown in fig. 2, in the power generation mode of the solar PVT array 18, ac power generated by the system is preferentially supplied to the second water pump 15, the solar heat exchange unit 16, the fifth electrically operated valve 11, the sixth electrically operated valve 12, the ninth electrically operated valve 23, and the tenth electrically operated valve 24 for use, and the surplus power is used for building other electric equipment or being integrated into a national power grid; the solar PVT soil heat storage mode is operated in spring, summer and autumn, when the temperature of the fourth temperature sensor 25 is higher than that of the second temperature sensor 21 and a required temperature difference value is reached, the fifth electric valve 11, the sixth electric valve 12, the second water pump 15, the solar heat exchange unit 16, the ninth electric valve 23 and the tenth electric valve 24 are opened, and solar radiation heat energy or air heat energy absorbed by the solar PVT array 18 is stored in soil for heating in winter by using the solar heat exchange unit 16 through improving the soil temperature.
Fig. 3 shows a schematic diagram of a solar PVT power generation and soil source heat pump heating mode system according to the present invention. The system comprises a first water pump 6, a tail end radiator system 7, a third electric valve 8, a fourth electric valve 9, a heating heat pump unit 10, a fifth electric valve 11, a sixth electric valve 12, a second water pump 15, a soil heat storage well 17, a second temperature sensor 21, a solar PVT array 18, an inverter 19 and an electric meter 20; the side inlet and outlet of the evaporator of the heating heat pump unit 10 are connected through a sixth electric valve 12, a soil heat storage well 17, a fifth electric valve 11, a second temperature sensor 21 and a second water pump 15 through pipelines; the side inlet and outlet of a condenser of the heating heat pump unit 10 are connected through a third electric valve 8, a tail end radiator system 7, a first water pump 6 and a fourth electric valve 9 by pipelines; the power generation condition of the solar PVT array 18 utilizes the photovoltaic effect of solar energy to directly convert solar energy into direct current electric energy, and the direct current electric energy is converted into alternating current electric energy through the inverter 19.
As shown in fig. 3, in the power generation mode of the solar PVT array 18, ac power generated by the system is preferentially supplied to the first water pump 6, the heating heat pump unit 10, the third electrically operated valve 8, the fourth electrically operated valve 9, the fifth electrically operated valve 11, the sixth electrically operated valve 12, and the second water pump 15, and the surplus power is used for building other electric equipment or being integrated into a national power grid; the soil source heat pump heating mode is operated in winter, when the temperature of the first temperature sensor 3 is lower than 60 ℃, the first electric valve 4 and the second electric valve 5 are closed, the third electric valve 8, the fourth electric valve 9, the heating heat pump unit 10, the fifth electric valve 11, the sixth electric valve 12 and the second water pump 15 are opened, and the heating heat pump unit 10 lifts a low-grade heat source extracted from soil into a high-grade heat source to heat, so that the heating requirement of the tail end of a user is ensured.
Fig. 4 is a schematic diagram of a solar PVT power generation and PVT heat pump heating mode system according to the present invention. The system consists of a first water pump 6, a heating heat pump unit 10, a third electric valve 8, a fourth electric valve 9, a seventh electric valve 13, an eighth electric valve 14, a second water pump 15, a solar heat exchanger unit 16, a solar PVT array 18, an inverter 19, an ammeter 20, a third temperature sensor 22 and a fourth temperature sensor 25 and a plurality of valves; the PVT side inlet and outlet of the solar heat exchanger unit 16 are connected with the PVT array 18 by a pipeline through a fourth temperature sensor 25, and the ground source side inlet and outlet of the solar heat exchanger unit 16 are connected with the evaporator side inlet and outlet of the heating heat pump unit 19 by a pipeline through a third temperature sensor 22, an eighth electrically operated valve 14, a second water pump 15 and a seventh electrically operated valve 13; the side inlet and outlet of a condenser of the heating heat pump unit 10 are connected through a third electric valve 8, a tail end radiator system 7, a first water pump 6 and a fourth electric valve 9 by pipelines; the power generation condition of the solar PVT array 18 utilizes the photovoltaic effect of solar energy to directly convert solar energy into direct current electric energy, and the direct current electric energy is converted into alternating current electric energy through the inverter 19.
As shown in fig. 4, in the power generation mode of the solar PVT array 18, ac power generated by the system is preferentially supplied to the first water pump 6, the heating heat pump unit 10, the third electrically operated valve 8, the fourth electrically operated valve 9, the seventh electrically operated valve 13, the eighth electrically operated valve 14, the second water pump 15, and the solar heat exchanger unit 16, and the surplus power is used for building other electric equipment or is integrated into a national power grid; the solar PVT heat pump heating mode is operated in winter, when the temperature of the first temperature sensor 3 is lower than 60 ℃, the first electric valve 4 and the second electric valve 5 are closed, and the third electric valve 8, the fourth electric valve 9, the heating heat pump unit 10, the second water pump 15 and the solar heat exchanger unit 16 are opened; when the temperature of the third temperature sensor 22 is higher than that of the second temperature sensor 21 and the temperature difference reaches a certain difference value, the fifth electric valve 11 and the sixth electric valve 12 are closed, the seventh electric valve 13 and the eighth electric valve 14 are opened, and the heating heat pump unit 10 takes solar radiation heat energy or air heat energy absorbed by the solar PVT array 18 as a low-grade heat source to be lifted into a high-grade heat source for heating, so that the heating requirement of the tail end of a user is ensured.
As shown in fig. 5, the solar PVT power generation and municipal heat source heating mode system schematic diagram of the present invention. The system consists of a municipal primary heat supply network 1, a plate heat exchanger 2, a first temperature sensor 3, a first electric valve 4, a second electric valve 5, a first water pump 6, a tail end radiator system 7, a solar PVT array 18, an inverter 19 and an ammeter 20; the municipal primary heat supply network 1 is connected with the primary network side of the plate heat exchanger 2 through a valve and a pipeline; the secondary net side water outlet of the plate heat exchanger 2 is connected with the water supply port of the tail end radiator system 7 through a pipeline by the first temperature sensor 3 and the first electric valve 4; the water return port of the tail end radiator system 7 is connected with the water return port of the secondary network side of the plate heat exchanger 2 through a first water pump 6 and a second electric valve 5 by a pipeline; the power generation condition of the solar PVT array 18 utilizes the photovoltaic effect of solar energy to directly convert solar energy into direct current electric energy, and the direct current electric energy is converted into alternating current electric energy through the inverter 19.
As shown in fig. 5, in the power generation mode of the solar PVT array 18, ac power generated by the system is preferentially supplied to the plate heat exchanger 2, the first electrically operated valve 4, the second electrically operated valve 5 and the first water pump 6 for use, and the redundant power is used for building other electric equipment or is integrated into a national power grid; the municipal heat source heating mode is operated in winter, when the temperature of the first temperature sensor 3 is higher than 60 ℃, the first electric valve 4, the second electric valve 5 and the first water pump 6 are opened, and the municipal primary heat network 1 converts high-temperature water into low-temperature water for terminal heating through the plate heat exchanger 2.
The switching among the operation modes is considered according to the temperature change of the solar PVT array, the soil temperature change and the municipal thermal secondary network temperature synthesis, and the long-term stable, reliable and efficient operation of the system is ensured through the intelligent detection control system.
The present invention is not limited to the present embodiment, and any equivalent concept or modification within the technical scope of the present invention is listed as the protection scope of the present invention.
Claims (8)
1. A heat and power cogeneration system suitable for a PVT heat pump soil cross-season energy storage coupling municipal heat source of a traditional radiator is characterized in that,
The municipal primary heat supply network (1) is connected with the primary network side of the plate heat exchanger (2) through a valve and a pipeline; the secondary network side water outlet of the plate heat exchanger (2) is connected with the water supply port of the tail end radiator system (7) by a pipeline sequentially through the first temperature sensor (3) and the first electric valve (4); the water return port of the tail end radiator system (7) is connected with the water return port of the secondary network side of the plate heat exchanger (2) through a pipeline by a first water pump (6) and a second electric valve (5); the condenser side water outlet of the heating heat pump unit (10) is connected between the first electric valve (4) and the water supply port of the tail end radiator system (7) through a third electric valve (8) and is connected by a three-way pipe; a condenser side water return port of the heating heat pump unit (10) is connected between the first water pump (6) and the second electric valve (5) through a fourth electric valve (9) and is connected by a three-way pipe; an evaporator side inlet of the heating heat pump unit (10) is connected with a soil heat storage well (17) through a fifth electric valve (11), a second temperature sensor (21) and a second water pump (15) by utilizing a pipeline; the evaporator side outlet of the heating heat pump unit (10) is connected with a soil heat storage well (17) through a sixth electric valve (12) by utilizing a pipeline; the PVT side outlet of the solar heat exchange unit (16) is connected with the solar PVT array (18); the ground source side inlet of the solar heat exchange unit (16) is divided into two branches, and one branch is connected between the outlet side of the evaporator of the heating heat pump unit (10) and the sixth electric valve (12) through a seventh electric valve (13) and is connected by a three-way pipe; the second branch is connected between the second water pump (15) and a water return port at the side of an evaporator of the heating heat pump unit (10) through a ninth electric valve (23) and is connected by a three-way pipe; the ground source side outlet of the solar heat exchange unit (16) is divided into two branches, and one branch is connected between the fifth electric valve (11) and the second water pump (15) through a third temperature sensor (22) and an eighth electric valve (14) and is connected through a three-way pipe; the second branch is connected between the outlet side of the evaporator of the heating heat pump unit (10) and the sixth electric valve (12) through a third temperature sensor (22) and a tenth electric valve (24) and is connected by a three-way pipe; the solar PVT array (18) is used for generating electricity under the working condition that solar photovoltaic effect is utilized to directly convert solar energy into direct-current electric energy, the direct-current electric energy is converted into alternating-current electric energy through the inverter (19), and an ammeter (20) is arranged between the inverter (19) and the power grid.
2. The cogeneration system according to claim 1, wherein the power generation condition of the solar PVT array (18) is to preferentially supply ac power generated by the cogeneration system to the plate heat exchanger (2), the first temperature sensor (3), the second temperature sensor (21), the third temperature sensor (22), the first electrically operated valve (4), the second electrically operated valve (5), the third electrically operated valve (8), the fourth electrically operated valve (9), the fifth electrically operated valve (11), the sixth electrically operated valve (12), the seventh electrically operated valve (13), the eighth electrically operated valve (14), the ninth electrically operated valve (23), the tenth electrically operated valve (24), the heating heat pump unit (10), the first water pump (6), the second water pump (15), the solar heat exchanger unit (16), and the surplus power is used for building other electric consumers or being incorporated into a power grid.
3. Cogeneration system according to claim 1, wherein the first electrically operated valve (4), the second electrically operated valve (5), the third electrically operated valve (8), the fourth electrically operated valve (9), the heating heat pump unit (10), the second water pump (15) are interlocked with the first temperature sensor (3); the fifth electric valve (11), the sixth electric valve (12), the seventh electric valve (13) and the eighth electric valve (14) are interlocked with the second temperature sensor (21) and the third temperature sensor (22).
4. The cogeneration system according to claim 1, wherein the heating heat pump unit (10) is a ground source heat pump unit or a water source heat pump unit capable of heating, the refrigerant in the heating heat pump unit (10) is an environment-friendly refrigerant, the valve is an electromagnetic on-off valve group, and the water pump is a vertical pipeline pump, a horizontal pipeline pump or a multistage pump.
5. The cogeneration system of claim 1, wherein the cogeneration system is in a solar PVT power generation and soil heat storage mode: the fifth electric valve (11), the sixth electric valve (12), the ninth electric valve (23), the tenth electric valve (24), the second water pump (15) and the solar heat exchanger unit (16) are opened; the solar PVT array (18) converts solar energy into alternating current energy through the inverter (19) for the electric equipment to use or be integrated into a power grid; the solar PVT array (18) stores the absorbed solar radiation heat energy and air heat energy into the soil heat storage well (17) by utilizing the solar heat exchange unit (16) and the second water pump (15) for heating in winter.
6. The cogeneration system of claim 1, wherein the cogeneration system comprises a solar PVT power generation and ground source heat pump heating mode: the third electric valve (8), the fourth electric valve (9), the fifth electric valve (11), the sixth electric valve (12), the first water pump (6), the second water pump (15), the tail end radiator system (7) and the heating heat pump unit (10) are opened; in winter, the solar PVT array (18) converts solar energy into alternating current electric energy through the inverter (19) for electric equipment to use or is integrated into a power grid; the heating heat pump unit (10) uses a second water pump (15) to lift heat extracted from the soil heat storage well (17) as a low-grade heat source to be a high-grade heat source, and hot water at 60 ℃ is produced for use by the tail end radiator system (7).
7. The cogeneration system of claim 1, wherein the cogeneration system comprises a solar PVT power generation and PVT heat pump heating mode: the third electric valve (8), the fourth electric valve (9), the seventh electric valve (13), the eighth electric valve (14), the first water pump (6), the second water pump (15), the tail end radiator system (7), the heating heat pump unit (10) and the solar heat exchanger unit (16) are opened; in winter, the solar PVT array (18) converts solar energy into alternating current electric energy through the inverter (19) for electric equipment to use or is integrated into a power grid; after solar radiation heat energy and air heat energy absorbed by the solar PVT array (18) are subjected to heat exchange through the solar heat exchange unit (16), the heat energy is conveyed to the heating heat pump unit (10) by the second water pump (15) to serve as a low-grade heat source, the heat pump unit is lifted to be a high-grade heat source by using the reverse Carnot principle, and hot water at the temperature of 60 ℃ is produced for the tail end radiator system (7).
8. The cogeneration system of claim 1, wherein the cogeneration system comprises a solar PVT power generation and municipal heat source heating mode: the municipal primary heat supply network (1), the plate heat exchanger (2), the first electric valve (4), the second electric valve (5), the first water pump (6) and the tail end radiator system (7) are opened; in winter, the solar PVT array (18) converts solar energy into alternating current electric energy through the inverter (19) for electric equipment to use or is integrated into a power grid; the municipal primary heat supply network (1) is converted into hot water at 60 ℃ by using the plate heat exchanger (2), and is used by using the first water pump (6) for the tail end radiator system (7).
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| CN202411349855.5A CN118960069A (en) | 2024-09-26 | 2024-09-26 | A cogeneration system of PVT heat pump soil cross-season energy storage coupled with municipal heat source suitable for traditional radiators |
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| CN202411349855.5A CN118960069A (en) | 2024-09-26 | 2024-09-26 | A cogeneration system of PVT heat pump soil cross-season energy storage coupled with municipal heat source suitable for traditional radiators |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN121162966A (en) * | 2025-10-20 | 2025-12-19 | 中山市爱美泰电器有限公司 | Composite water source heating method, electronic equipment, readable storage medium and computer program product |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN121162966A (en) * | 2025-10-20 | 2025-12-19 | 中山市爱美泰电器有限公司 | Composite water source heating method, electronic equipment, readable storage medium and computer program product |
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