CN219531037U - Thermoelectric coupling energy supply system - Google Patents
Thermoelectric coupling energy supply system Download PDFInfo
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- CN219531037U CN219531037U CN202223193444.0U CN202223193444U CN219531037U CN 219531037 U CN219531037 U CN 219531037U CN 202223193444 U CN202223193444 U CN 202223193444U CN 219531037 U CN219531037 U CN 219531037U
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Abstract
The utility model provides a thermoelectric coupling energy supply system, comprising: a buried pipe circulation subsystem, a heat pump circulation subsystem, an energy supply end circulation subsystem and a plurality of PVT circulation subsystems; the buried pipe circulation subsystem is buried at the bottom of a preset area related to a user; the heat pump circulation subsystem is respectively connected with the energy supply tail end circulation subsystem and the buried pipe circulation subsystem; the PVT circulation subsystems are respectively arranged at the tops of houses of different users and connected with the buried pipe circulation subsystem; the PVT circulation subsystem is used for providing domestic hot water and electric energy for a user room where the PVT circulation subsystem is installed; the solar energy heat-storage system is also used for carrying out heat exchange with shallow geothermal energy through the buried pipe circulation subsystem and carrying out solar energy cross-season energy storage; after heat exchange is carried out on the energy supply tail end circulation subsystem and the heat pump circulation subsystem, cooling and heating are carried out on all user rooms through the ground buried pipe circulation subsystem; realizing the integration of energy source production, supply and storage.
Description
Technical Field
The utility model belongs to the fields of solar photovoltaics, photo-thermal and heat pumps, and particularly relates to a thermoelectric coupling energy supply system.
Background
With the rapid development of urban land, the buildings adopting regional centralized energy supply are increasingly increased, and the regional energy supply system has important roles in improving the energy utilization efficiency, realizing the large-scale development of renewable energy and promoting the regional energy supply revolution as an important link for constructing an urban intelligent energy network. The regional energy system can comprehensively consider regional energy utilization characteristics according to local conditions and utilize renewable energy sources of the region nearby, and combines energy storage, cogeneration technology, heat pump technology and the like to refrigerate and heat and provide domestic hot water for the building in the region, so that the regional energy system can be a good supplement for central heating, the flexibility of the system is improved, and the carbon emission is reduced.
Solar energy is used as a renewable energy source, the cost of the solar energy is reduced by about 70% in the past ten years, and the electricity generation cost of a large-scale photovoltaic power station is close to that of the traditional fossil fuel energy source. At the same time of rapid development of the traditional Photovoltaic industry, photovoltaic photo-thermal (PVT) technology is also a brand-new corner, and the heat exchange device is arranged on the back of the Photovoltaic panel to recover and utilize heat energy while generating electricity and can radiate and refrigerate at night. PVT has cooling effect to the battery in daytime, can alleviate "temperature effect" and the hot spot phenomenon of photovoltaic, has improved the generating efficiency of subassembly, has prolonged the subassembly life-span, can utilize space radiation refrigeration at night, has realized the cogeneration of heat and power throughout the day, has improved the utilization ratio and the productivity of subassembly by a wide margin.
The ground source heat pump system is an efficient and stable energy utilization system, can heat and cool simultaneously, but has larger initial investment, is often used in scenes with larger load demands, is suitable for regional energy supply systems, and has larger energy efficiency ratio influenced by the temperature of the source side.
Disclosure of Invention
To overcome the above-mentioned shortcomings of the prior art, the present utility model proposes a thermoelectric coupling energy supply system comprising: a buried pipe circulation subsystem, a heat pump circulation subsystem, an energy supply end circulation subsystem and a plurality of PVT circulation subsystems;
the buried pipe circulation subsystem is buried at the bottom of a preset area related to a user; the heat pump circulation subsystem is respectively connected with the energy supply tail end circulation subsystem and the buried pipe circulation subsystem; the PVT circulation subsystems are respectively arranged at the tops of houses of different users and connected with the buried pipe circulation subsystem;
the PVT circulation subsystem is used for providing domestic hot water and electric energy for a user room where the PVT circulation subsystem is installed; the solar energy heat-storage system is also used for carrying out heat exchange with shallow geothermal energy through the buried pipe circulation subsystem and carrying out solar energy cross-season energy storage;
and after heat exchange is carried out on the energy supply tail end circulation subsystem and the heat pump circulation subsystem, cooling and heating are carried out on all user rooms through the ground buried pipe circulation subsystem.
Preferably, the PVT circulation subsystem includes at least one or more of the following: the energy storage system comprises a PVT assembly (1), an energy storage inverter (2), an energy storage battery (3), a heat collection water tank (4), a heat exchanger (5), a domestic hot water tank (6), a first electronic three-way valve (7) and a first circulating pump (P1);
the inlet of the first electronic three-way valve (7) is connected with the outlet of the first circulating pump (P1);
the curved flow outlet of the first electronic three-way valve (7) is connected with the inlet of the heat collecting water tank (4), the water outlet of the heat collecting water tank (4) is connected with the domestic hot water tank (6), and the domestic hot water tank (6) is connected with a user hot water supply pipeline (25) and a hot water return pipeline (26);
the direct outflow port of the first electronic three-way valve (7) is connected with a first inlet (5-1) of a heat exchanger (5), a first outlet (5-2) of the heat exchanger (5) is respectively connected with a pipeline inlet of the PVT assembly (1) and an inlet of a hot water tank (4), and a pipeline outlet of the PVT assembly (1) is connected with an inlet of the first circulating pump (P1);
the PVT assembly (1) is electrically connected with the energy storage inverter (2) and the energy storage battery (3) in sequence; the second inlet (5-3) of the heat exchanger (5) and the second outlet (5-4) of the heat exchanger (5) are connected to positions with different water pressures of the buried pipe circulation subsystem;
the domestic hot water tank (6) is used for providing domestic hot water for users and supplementing water in a flowing way through natural gravity;
the PVT assembly (1) is used for supplying power to a user.
Preferably, a water supplementing inlet (27) is arranged at the bottom of the heat collecting water tank (4), and the water supplementing inlet (27) is used for municipal water supply.
Preferably, the heat collecting water tank (4) is a pressure-bearing water tank, and a heat exchange coil is arranged in the heat collecting water tank (4);
an electric heater is arranged in the domestic hot water tank (6);
the energy storage battery (3) is a lead-acid storage battery or a lithium ion battery.
Preferably, the heat pump cycle subsystem comprises at least one or more of the following: the device comprises a first heat exchanger (12), a second heat exchanger (14), a compressor (16), a four-way valve (15) and an expansion valve (13);
the inlet of the four-way valve (15) is connected with the compressor (16) and then is connected with the second outflow outlet (15-2) of the four-way valve (15);
after a first outflow outlet (15-1) of the four-way valve (15) is communicated with a first inlet (14-1) of a second heat exchanger (14), the first outflow outlet is connected with a second inlet (12-3) of a first heat exchanger (12) through a first outlet (14-2) of the second heat exchanger (14) and an expansion valve (13) in sequence, and a second outlet (12-4) of the first heat exchanger (12) is connected with a third outflow outlet (15-3) of the four-way valve (15);
a first inlet (12-1) of the first heat exchanger (12) is connected to a water outlet of the buried pipe circulation subsystem, and a first outlet (12-2) of the first heat exchanger (12) is connected to a water inlet of the buried pipe circulation subsystem;
a second inlet (14-3) of the second heat exchanger (14) is connected to a water outlet of the energy supply end circulation subsystem, and a second outlet (14-4) of the second heat exchanger (14) is connected to a water inlet of the energy supply end circulation subsystem;
when the heat pump circulation subsystem is in a heating mode, the four-way valve (15) is electrified, the first heat exchanger (12) works as an evaporator, and the second heat exchanger (14) works as a condenser; at the moment, a first outflow outlet (15-1) of the four-way valve (15) is communicated with an inlet of the four-way valve, a second outflow outlet (15-2) of the four-way valve (15) is communicated with a third outflow outlet (15-3) of the four-way valve (15), and the heat pump circulation subsystem realizes heating control by heat exchange with the ground pipe circulation subsystem;
when the heat pump circulation subsystem is in a refrigeration mode, the four-way valve (15) is not electrified, the first heat exchanger (12) works as a condenser, and the second heat exchanger (14) works as an evaporator; at the moment, a third flow bending outlet (15-3) of the four-way valve (15) is communicated with an inlet of the four-way valve, a first flow bending outlet (15-1) of the four-way valve (15) is communicated with a second flow bending outlet (15-2) of the four-way valve (15), and the heat pump circulation subsystem realizes refrigeration control by heat exchange with the ground pipe circulation subsystem.
Preferably, the powered end circulation subsystem includes at least one or more of the following: a constant temperature water tank (17), a water separator (18), a plurality of energy supply end modules, a water collector (23) and a third circulating pump (P3); the heat pump side outlet (17-2) of the constant temperature water tank (17) is connected with the inlet of a third circulating pump (P3), the outlet of the third circulating pump (P3) is connected with the second inlet (14-3) of the second heat exchanger (14), and the second outlet (14-4) of the second heat exchanger (14) is connected with the heat pump side inlet (17-1) of the constant temperature water tank (17) to form loop heat exchange;
the user side water outlet (17-4) of the constant temperature water tank (17) is connected with the water inlet of the water separator (18), and a plurality of water outlets of the water separator (18) are respectively connected with the inlet of one energy supply end module;
the outlets of the energy supply tail end modules are respectively connected with the inlets corresponding to the water collectors (23), and the outlets of the water collectors (23) are connected with the user side water inlets (17-3) of the constant temperature water tank (17);
a plurality of energy supply end modules are respectively installed in rooms of different users.
Preferably, the energy supply end module includes: a fourth circulation pump (P4), a heating branch and a refrigerating branch;
an inlet of the fourth circulating pump (P4) is connected with an outlet corresponding to the water separator (18);
the outlet of the fourth circulating pump (P4) is connected with the inlet of the heating branch, the outlet of the heating branch is connected with the inlet of the water collector (23), and the heating branch is used for heating a user;
the outlet of the fourth circulating pump (P4) is connected with the inlet of the refrigerating branch, the outlet of the refrigerating branch is connected with the inlet of the water collector (23), and the refrigerating branch is used for refrigerating a user.
Preferably, the heating branch includes: a fifth electromagnetic valve (20) and a floor heating coil pipe (22) are connected.
Preferably, the refrigeration branch includes: a fourth solenoid valve (19) and a fan coil (21) are connected.
Preferably, the buried pipe circulation subsystem comprises at least one or more of the following: the system comprises a second electronic three-way valve (8), a first electromagnetic valve (9), a second electromagnetic valve (10), a third electromagnetic valve (11), a second circulating pump (P2), a fifth circulating pump (P5) and a buried pipe heat exchanger (24);
the outflow outlet of the second electronic three-way valve (8), the fifth circulating pump (P5), the second electromagnetic valve (10), the buried pipe heat exchanger (24), the second circulating pump (P2), the first electromagnetic valve (9) and the inlet of the second electronic three-way valve (8) are sequentially connected through pipelines;
the direct outflow port of the second electronic three-way valve (8) is connected with the inlet of the PVT circulation subsystem, and the outlet of the PVT circulation subsystem is connected with the inlet of the fifth circulation pump (P5);
the third electromagnetic valve (11) is connected between the first electromagnetic valve (9) and the second circulating pump (P2).
Preferably, the first inlet (12-1) of the first heat exchanger (12) is connected to the outlet of the second electromagnetic valve (10), and the first outlet (12-2) of the first heat exchanger (12) is connected to the inlet of the third electromagnetic valve (11).
Preferably, the pipe burying mode of the ground pipe burying heat exchanger (24) at least comprises one or more of the following: horizontal burial and vertical burial.
Compared with the closest prior art, the utility model has the following beneficial effects:
1. the utility model provides a thermoelectric coupling energy supply system, comprising: a buried pipe circulation subsystem, a heat pump circulation subsystem, an energy supply end circulation subsystem and a plurality of PVT circulation subsystems; the buried pipe circulation subsystem is buried at the bottom of a preset area related to a user; the heat pump circulation subsystem is respectively connected with the energy supply tail end circulation subsystem and the buried pipe circulation subsystem; the PVT circulation subsystems are respectively arranged at the tops of houses of different users and connected with the buried pipe circulation subsystem; the PVT circulation subsystem is used for providing domestic hot water and electric energy for a user room where the PVT circulation subsystem is installed; the solar energy heat-storage system is also used for carrying out heat exchange with shallow geothermal energy through the buried pipe circulation subsystem and carrying out solar energy cross-season energy storage; and after heat exchange is carried out on the energy supply tail end circulation subsystem and the heat pump circulation subsystem, cooling and heating are carried out on all user rooms through the ground buried pipe circulation subsystem. The utility model utilizes the advantages of the PVT circulation subsystem, the buried pipe circulation subsystem, the heat pump circulation subsystem and the energy supply terminal circulation subsystem to carry out the integration of production, supply and storage on energy, and a user can be an energy consumption party or a capacity party, so that the dynamic balance of the supply and the demand of the system is better ensured; the PVT circulation subsystem, the buried pipe circulation subsystem, the heat pump circulation subsystem and the energy supply terminal circulation subsystem in the system are convenient for the existing user to directly incorporate and use, are convenient for equipment upgrading and updating, and are convenient for operation and maintenance personnel to operate and maintain.
2. The PVT circulation subsystem of the user is combined with the heat pump circulation subsystem and the buried pipe circulation subsystem of the preset area, so that the defects of high manufacturing cost, low energy efficiency, unbalanced ground source temperature and the like of a single-user heat pump system are overcome, and meanwhile, the thermoelectric cooling capacity of the PVT circulation subsystem of each user can be further improved. The system can provide high-economical and high-stability energy supply for users for a long time, and has the characteristics of high energy efficiency and environmental protection.
Drawings
FIG. 1 is a connection structure diagram of subsystem components of a thermoelectric coupling energy supply system provided by the utility model;
FIG. 2 is a flow chart of a method for providing thermal electric coupling energy;
reference numerals illustrate:
1-PVT assembly; 2-an energy storage inverter; 3-an energy storage battery; 4-a heat collecting water tank; a 5-heat exchanger; 5-1 is the first inlet of the heat exchanger; 5-2 is the first outlet of the heat exchanger; 5-3 is the second inlet of the heat exchanger; 5-4 is the second outlet of the heat exchanger; 6-a domestic hot water tank; 7-a first electronic three-way valve; 8-a second electronic three-way valve; 9-a first solenoid valve; 10-a second solenoid valve; 11-a third solenoid valve; 12-a first heat exchanger; 12-1 is a first inlet of a first heat exchanger; 12-2 is the first outlet of the heat exchanger; 12-3 is the second inlet of the heat exchanger; 12-4 is the second outlet of the heat exchanger; 13-an expansion valve; 14-a second heat exchanger; 14-1 is a first inlet of a first heat exchanger; 14-2 is the first outlet of the heat exchanger; 14-3 is the second inlet of the heat exchanger; 14-4 is the second outlet of the heat exchanger; 15-a four-way valve; a 16-compressor; 17-constant temperature water tank; 18-a water separator; 19-a fourth solenoid valve; 20-a fifth solenoid valve; 21-a fan coil; 22-floor heating coil pipe; 23-water collector; 24-a buried pipe heat exchanger; t12 is room temperature, T13 is ground source temperature; p1-first circulation pump, P2-second circulation pump, P3-third circulation pump, P4-fourth circulation pump and P5-fifth circulation pump.
Detailed Description
The following describes the embodiments of the present utility model in further detail with reference to the drawings.
Example 1:
the utility model provides a thermoelectric coupling energy supply system, as shown in figure 1, comprising:
a buried pipe circulation subsystem, a heat pump circulation subsystem, an energy supply end circulation subsystem and a plurality of PVT circulation subsystems;
the buried pipe circulation subsystem is buried at the bottom of a preset area related to a user; the heat pump circulation subsystem is respectively connected with the energy supply tail end circulation subsystem and the buried pipe circulation subsystem; the PVT circulation subsystems are respectively arranged at the tops of houses of different users and connected with the buried pipe circulation subsystem;
the PVT circulation subsystem is used for providing domestic hot water and electric energy for a user room where the PVT circulation subsystem is installed; the solar energy heat-storage system is also used for carrying out heat exchange with shallow geothermal energy through the buried pipe circulation subsystem and carrying out solar energy cross-season energy storage;
and after heat exchange is carried out on the energy supply tail end circulation subsystem and the heat pump circulation subsystem, cooling and heating are carried out on all user rooms through the ground buried pipe circulation subsystem.
Specifically, the PVT circulation subsystem includes at least one or more of the following devices: the PVT assembly 1, the energy storage inverter 2, the energy storage battery 3, the heat collection water tank 4, the heat exchanger 5, the domestic hot water tank 6, the first electronic three-way valve 7 and the first circulating pump P1;
the inlet of the first electronic three-way valve 7 is connected with the outlet of the first circulating pump P1;
the curved flow outlet of the first electronic three-way valve 7 is connected with the inlet of the heat collecting water tank 4, the water outlet of the heat collecting water tank 4 is connected with the domestic hot water tank 6, and the domestic hot water tank 6 is connected with a user hot water supply pipeline 25 and a hot water return pipeline 26;
the straight outflow port of the first electronic three-way valve 7 is connected with the first inlet 5-1 of the heat exchanger 5, the first outlet 5-2 of the heat exchanger 5 is respectively connected with the pipeline inlet of the PVT assembly 1 and the inlet of the heat collecting water tank 4, and the pipeline outlet of the PVT assembly 1 is connected with the inlet of the first circulating pump P1;
the PVT assembly 1 is electrically connected with the energy storage inverter 2 and the energy storage battery 3 in sequence; the second inlet 5-3 of the heat exchanger 5 and the second outlet 5-4 of the heat exchanger 5 are connected to positions with different water pressures of the buried pipe circulation subsystem;
the domestic hot water tank 6 is used for providing domestic hot water for users and supplementing water in a flowing way through natural gravity;
the PVT assembly 1 is used for powering a user.
The bottom of the heat collection water tank 4 is provided with a water supplementing inlet 27, and the water supplementing inlet 27 is used for municipal water supply;
the heat collecting water tank 4 is a pressure-bearing water tank, and a heat exchange coil is arranged in the heat collecting water tank 4;
an electric heater is arranged in the domestic hot water tank 6;
the energy storage battery 3 is a lead-acid storage battery or a lithium ion battery;
based on the connection, when the PVT subsystem and the heat pump circulation subsystem in summer are considered to be discharged into a ground source through the ground pipe circulation subsystem in a refrigerating mode, the temperature reduction of the PVT assembly and the refrigerating performance of the heat pump can be influenced due to the fact that excessive soil heat is accumulated and cannot be timely absorbed, the whole system is unfavorable, and therefore a part of heat energy can be absorbed by utilizing the characteristics of night radiation refrigeration and heat dissipation of the PVT assembly;
by starting the heat pump circulation subsystem, during the daytime period, such as 5-21 points, the first heat exchanger 12 is a condenser for exchanging heat with the buried pipe heat exchanger 24, and the second circulation pump P2, the second electromagnetic valve 10 and the third electromagnetic valve 11 are started;
in the night time period, for example, 22-4 points, the first heat exchanger 12 is used for exchanging heat between the condenser and the heat exchanger 5 of the PVT subsystem, the fifth circulating pump P5, the first electromagnetic valve 9 and the third electromagnetic valve 11 are started, the first circulating pump P1, the multi-user first electronic three-way valve 7 and the multi-user second electronic three-way valve 8 are started, and the multi-user PVT assembly 1 is used for heat dissipation and refrigeration.
When in the annual living hot water mode, the annual PVT circulation subsystem operates in accordance with the condition, and the PVT assembly 1 is used for collecting heat or generating electricity for the heat collection water tank 4;
when in the heat collection water mode, the temperature T1 of the PVT assembly 1 and the temperature T3 of the heat collection water tank 4 are monitored in real time through the control box, and when T1, T2 and T3 are more than 7 ℃ and T3 is less than 40 ℃, the first circulating pump P1 is started, the first electronic tee 7 is kept in a bent flow state, and the heat collection water tank 4 starts to be heated;
when T1, T2 and T3 < 3 ℃, the first circulation pump P1 is stopped. The temperature T4 of the domestic hot water tank 6 is less than 40 ℃, an electric heating device arranged in the domestic hot water tank 6 is started to heat the domestic hot water tank, and the domestic hot water tank is stopped at 50 ℃, so that the water temperature of the domestic hot water tank 6 is maintained above 40 ℃, and the domestic hot water temperature requirement is met.
Specifically, the heat pump cycle subsystem includes at least one or more of the following: a first heat exchanger 12, a second heat exchanger 14, a compressor 16, a four-way valve 15, and an expansion valve 13;
the inlet of the four-way valve 15 is connected with the compressor 16 and then connected with the second outflow outlet 15-2 of the four-way valve 15;
after the first outflow outlet 15-1 of the four-way valve 15 is communicated with the first inlet 14-1 of the second heat exchanger 14, the first outflow outlet 14-2 of the second heat exchanger 14 and the expansion valve 13 are sequentially connected to the second inlet 12-3 of the first heat exchanger 12, and the second outlet 12-4 of the first heat exchanger 12 is connected to the third outflow outlet 15-3 of the four-way valve 15;
the first inlet 12-1 of the first heat exchanger 12 is connected to the water outlet of the buried pipe circulation subsystem, and the first outlet 12-2 of the first heat exchanger 12 is connected to the water inlet of the buried pipe circulation subsystem;
the second inlet 14-3 of the second heat exchanger 14 is connected to the water outlet of the energy supply end circulation subsystem, and the second outlet 14-4 of the second heat exchanger 14 is connected to the water inlet of the energy supply end circulation subsystem;
when the heat pump circulation subsystem is in a heating mode, the four-way valve 15 is electrified, the first heat exchanger 12 works as an evaporator, and the second heat exchanger 14 works as a condenser; at this time, the first outflow outlet 15-1 of the four-way valve 15 is communicated with the inlet of the four-way valve, the second outflow outlet 15-2 of the four-way valve 15 is communicated with the third outflow outlet 15-3 of the four-way valve 15, and the heat pump circulation subsystem performs heat exchange with the ground pipe circulation subsystem to further realize heating control;
when the heat pump cycle subsystem is in a refrigeration mode, the four-way valve 15 is not energized, the first heat exchanger 12 operates as a condenser, and the second heat exchanger 14 operates as an evaporator; at this time, the third outflow port 15-3 of the four-way valve 15 is communicated with the inlet of the four-way valve, the first outflow port 15-1 of the four-way valve 15 is communicated with the second outflow port 15-2 of the four-way valve 15, and the heat pump circulation subsystem performs heat exchange with the ground pipe circulation subsystem to further realize refrigeration control.
Specifically, the energy supply end circulation subsystem at least comprises one or more of the following devices: a constant temperature water tank 17, a water separator 18, a plurality of energy supply end modules, a water collector 23 and a third circulating pump P3; the heat pump side outlet 17-2 of the constant temperature water tank 17 is connected with the inlet of the third circulating pump P3, the outlet of the third circulating pump P3 is connected with the second inlet 14-3 of the second heat exchanger 14, and the second outlet 14-4 of the second heat exchanger 14 is connected with the heat pump side inlet 17-1 of the constant temperature water tank 17 to form loop heat exchange;
the user side water outlet 17-4 of the constant temperature water tank 17 is connected with the water inlet of the water separator 18, and a plurality of water outlets of the water separator 18 are respectively connected with the inlet of one energy supply end module;
the outlets of the energy supply tail end modules are respectively connected with the inlets corresponding to the water collectors 23, and the outlets of the water collectors 23 are connected with the user side water inlets 17-3 of the constant temperature water tank 17;
a plurality of energy supply end modules are respectively installed in rooms of different users.
The energy supply end module comprises: the fourth circulating pump P4, a heating branch and a refrigerating branch;
an inlet of the fourth circulating pump P4 is connected with an outlet corresponding to the water separator 18;
the outlet of the fourth circulating pump P4 is connected to the inlet of the heating branch, the outlet of the heating branch is connected to the inlet of the water collector 23, and the heating branch is used for heating a user;
the outlet of the fourth circulating pump P4 is connected with the inlet of the refrigerating branch, the outlet of the refrigerating branch is connected with the inlet of the water collector 23, and the refrigerating branch is used for refrigerating a user;
the heating branch includes: a fifth solenoid valve 20 and a floor heating coil 22 connected;
the refrigeration branch circuit comprises: a fourth solenoid valve 19 and a fan coil 21 connected;
when heating season starts, an operation and maintenance person sets the system to a heating mode, the system automatically adjusts the four-way valve 15 to a heating starting mode, and the temperature of the constant-temperature water tank 17 is set to 45-55 ℃;
when the temperature T7 of the constant-temperature water tank 17 is lower than 45 ℃, a heat pump circulation subsystem is started, namely a second circulation pump P2 is started, a second electromagnetic valve 10 and a third electromagnetic valve 11 are started, the first heat exchanger 12 exchanges heat with the buried pipe heat exchanger 24, a third circulation pump P3 is started, the second heat exchanger 14 exchanges heat with the constant-temperature water tank, the temperature T7 of the constant-temperature water tank 17 is heated to 55 ℃, and the equipment is restored to a original state and stops running.
When a single user needs to supply heat, the user can set the automatic starting and stopping temperature for heating by himself, and can set the automatic starting and stopping temperature to be lower than 18 ℃ to start heating and higher than 25 ℃ to stop heating;
when the room temperature T12 is less than 18 ℃ and heating is needed, a fourth circulating pump P4 on the user side is started, a fifth electromagnetic valve 20 on the user side is opened, and hot water passes through a floor heating coil 22 to heat the room of the user;
setting the water outlet temperature of the floor heating coil pipe 22 to 35 ℃, namely stopping the operation of the fourth circulating pump P4 when T9 is more than or equal to 35 ℃, and restarting the operation of the fourth circulating pump P4 when T9 is less than 35 ℃ after heat exchange in a room to be used;
the user can adopt fan coil to heat rapidly simultaneously, but the temperature of intaking is lower, considers efficiency and energy-conserving nature and does not suggest long-term use, when other users need the heating, adopts above-mentioned same kind of mode, carries out control heating.
When the refrigerating season starts, an operation and maintenance person sets the system to be in a refrigerating mode, the system automatically adjusts the four-way valve 15 to be in a refrigerating opening mode, and the temperature of the constant-temperature water tank 17 is set to be 3-7 ℃;
when the temperature T7 of the constant-temperature water tank 17 is higher than 7 ℃, a heat pump circulation subsystem is started, the first heat exchanger 12 is a condenser and a buried pipe heat exchanger 24 or exchanges heat with the PVT circulation subsystem, a corresponding electric valve and a corresponding circulating pump are started, a third circulating pump P3 is started, the second heat exchanger 14 is an evaporator and the constant-temperature water tank exchanges heat, the temperature T7 of the constant-temperature water tank 17 is cooled to 3 ℃, the equipment is restored to a original state, the operation is stopped, and the monitoring of multiple temperature measuring points of the water tank is performed to ensure that the temperature is not less than 0 ℃;
when a single user needs to refrigerate, the user can set the automatic start-stop temperature of the refrigeration by himself, and can set the temperature to be higher than 28 ℃ to start the refrigeration and lower than 23 ℃ to stop the refrigeration;
when the room temperature T12 is more than 28 ℃ and refrigeration is needed, the fourth circulating pump P4 on the user side is started, the fourth electromagnetic valve 19 on the user side is opened, and cold water passes through the fan coil 21 to be subjected to indoor refrigeration;
when the outlet water temperature of the fan coil 21 is set to be 12 ℃, namely T9 is less than 12 ℃, the fourth circulating pump P4 stops running, after heat exchange in a standby room, when T9 is more than or equal to 12 ℃, the fourth circulating pump P4 restarts running, and when other users need to refrigerate, the same mode is adopted to control the refrigeration.
Specifically, the buried pipe circulation subsystem at least comprises one or more of the following devices: a second electronic three-way valve 8, a first electromagnetic valve 9, a second electromagnetic valve 10, a third electromagnetic valve 11, a second circulating pump P2, a fifth circulating pump P5 and a buried pipe heat exchanger 24;
the curved flow outlet of the second electronic three-way valve 8, the fifth circulating pump P5, the second electromagnetic valve 10, the buried pipe heat exchanger 24, the second circulating pump P2, the first electromagnetic valve 9 and the inlet of the second electronic three-way valve 8 are sequentially connected through pipelines;
the straight outflow port of the second electronic three-way valve 8 is connected with the inlet of the PVT circulation subsystem, and the outlet of the PVT circulation subsystem is connected with the inlet of the fifth circulation pump P5;
the third electromagnetic valve 11 is connected between the first electromagnetic valve 9 and the second circulating pump P2;
the first inlet 12-1 of the first heat exchanger 12 is connected to the outlet of the second electromagnetic valve 10, and the first outlet 12-2 of the first heat exchanger 12 is connected to the inlet of the third electromagnetic valve 11;
the pipe laying mode of the ground heat exchanger 24 at least comprises one or more of the following: horizontal and vertical burial pipes;
when the underground pipe circulation subsystem is in a heat storage mode, the control box monitors the outlet temperature T1 of the PVT component 1, the temperature T3 of the heat collection water tank 4 and the ground source temperature T13 in real time, when the temperature T3 is more than 40 ℃ and the temperature T1 is more than 40 ℃, the first circulation pump P1 and the second circulation pump P2 are started, the first electronic three-way valve 7 and the second electronic three-way valve 8 are opened, the first electromagnetic valve 9 and the second electromagnetic valve 10 are opened, heat exchange and heat storage of the underground pipe circulation subsystem are started, the working temperature of the PVT component is 40 ℃ at most, and the electricity production efficiency of the PVT component is improved.
When the heat storage mode of the ground pipe burying circulation subsystem and the heating mode of the heat pump circulation subsystem control conflict, the heating mode is set to operate preferentially.
Example 2: the thermoelectric coupling energy supply method provided by the utility model is shown in figure 2, and comprises the following steps:
domestic hot water and electric energy are respectively provided for a user room through a plurality of PVT circulating subsystems arranged at the top of houses of different users;
the PVT circulation subsystem is connected with a buried pipe circulation subsystem buried in the ground of a preset area related to a user, and can exchange heat with shallow ground through the buried pipe circulation subsystem and store energy of solar energy in a cross-season mode;
the heat pump circulation subsystem is respectively connected with the energy supply terminal circulation subsystem and the ground buried pipe circulation subsystem, and after heat exchange is carried out on the energy supply terminal circulation subsystem and the heat pump circulation subsystem, the heat pump circulation subsystem is used for refrigerating and heating rooms of all users through the ground buried pipe circulation subsystem.
The PVT loop subsystem includes at least one or more of the following: the PVT assembly 1, the energy storage inverter 2, the energy storage battery 3, the heat collection water tank 4, the heat exchanger 5, the domestic hot water tank 6, the first electronic three-way valve 7 and the first circulating pump P1;
the inlet of the first electronic three-way valve 7 is connected with the outlet of the first circulating pump P1;
the curved flow outlet of the first electronic three-way valve 7 is connected with the inlet of the heat collecting water tank 4, the water outlet of the heat collecting water tank 4 is connected with the domestic hot water tank 6, and the domestic hot water tank 6 is connected with a user hot water supply pipeline 25 and a hot water return pipeline 26;
the straight outflow port of the electronic three-way valve 7 is connected with the first inlet 5-1 of the heat exchanger 5, the first outlet 5-2 of the heat exchanger 5 is respectively connected with the pipeline inlet of the PVT assembly 1 and the inlet of the heat collecting tank 4, and the pipeline outlet of the PVT assembly 1 is connected with the inlet of the first circulating pump P1;
the PVT assembly 1 is electrically connected with the energy storage inverter 2 and the energy storage battery 3 in sequence; the second inlet 5-3 of the heat exchanger 5 and the second outlet 5-4 of the heat exchanger 5 are connected to positions with different water pressures of the buried pipe circulation subsystem;
the domestic hot water tank 6 is used for providing domestic hot water for users and carrying out flowing water supplementing through natural gravity;
the user is powered by the PVT assembly 1.
The heat pump cycle subsystem includes at least one or more of the following: a first heat exchanger 12, a second heat exchanger 14, a compressor 16, a four-way valve 15, and an expansion valve 13;
the inlet of the four-way valve 15 is connected with the compressor 16 and then connected with the second outflow outlet 15-2 of the four-way valve 15;
after the first outflow outlet 15-1 of the four-way valve 15 is communicated with the first inlet 14-1 of the second heat exchanger 14, the first outflow outlet 14-2 of the second heat exchanger 14 and the expansion valve (13) are sequentially connected to the second inlet 12-3 of the first heat exchanger 12, and the second outlet 12-4 of the first heat exchanger 12 is connected to the third outflow outlet 15-3 of the four-way valve 15;
the first inlet 12-1 of the first heat exchanger 12 is connected to the water outlet of the buried pipe circulation subsystem, and the first outlet 12-2 of the first heat exchanger 12 is connected to the water inlet of the buried pipe circulation subsystem;
the second inlet 14-3 of the second heat exchanger 14 is connected to the water outlet of the energy supply end circulation subsystem, and the second outlet 14-4 of the second heat exchanger 14 is connected to the water inlet of the energy supply end circulation subsystem;
when the heat pump circulation subsystem is in a heating mode, the four-way valve 15 is electrified, the first heat exchanger 12 works as an evaporator, and the second heat exchanger 14 works as a condenser; at this time, the first outflow outlet 15-1 of the four-way valve 15 is communicated with the inlet of the four-way valve, the second outflow outlet 15-2 of the four-way valve 15 is communicated with the third outflow outlet 15-3 of the four-way valve 15, and the heat pump circulation subsystem performs heat exchange with the ground pipe circulation subsystem to further realize heating control;
when the heat pump cycle subsystem is in a refrigeration mode, the four-way valve 15 is not energized, the first heat exchanger 12 operates as a condenser, and the second heat exchanger 14 operates as an evaporator; at this time, the third outflow port 15-3 of the four-way valve 15 is communicated with the inlet of the four-way valve, the first outflow port 15-1 of the four-way valve 15 is communicated with the second outflow port 15-2 of the four-way valve 15, and the heat pump circulation subsystem performs heat exchange with the ground pipe circulation subsystem to further realize refrigeration control.
The powered end circulation subsystem includes at least one or more of the following: a constant temperature water tank 17, a water separator 18, a plurality of energy supply end modules, a water collector 23 and a third circulating pump P3; the heat pump side outlet 17-2 of the constant temperature water tank 17 is connected with the inlet of the third circulating pump P3, the outlet of the third circulating pump P3 is connected with the second inlet 14-3 of the second heat exchanger 14, and the second outlet 14-4 of the second heat exchanger 14 is connected with the heat pump side inlet 17-1 of the constant temperature water tank 17 to form loop heat exchange;
the user side water outlet 17-4 of the constant temperature water tank 17 is connected with the water inlet of the water separator 18, and a plurality of water outlets of the water separator 18 are respectively connected with the inlet of one energy supply end module;
the outlets of the energy supply tail end modules are respectively connected with the inlets corresponding to the water collectors 23, and the outlets of the water collectors 23 are connected with the user side water inlets 17-3 of the constant temperature water tank 17;
a plurality of energy supply end modules are respectively installed in rooms of different users.
The buried pipe circulation subsystem at least comprises one or more of the following devices: a second electronic three-way valve 8, a first electromagnetic valve 9, a second electromagnetic valve 10, a third electromagnetic valve 11, a second circulating pump P2, a fifth circulating pump P5 and a buried pipe heat exchanger 24;
the curved flow outlet of the second electronic three-way valve 8, the fifth circulating pump P5, the second electromagnetic valve 10, the buried pipe heat exchanger 24, the second circulating pump P2, the first electromagnetic valve 9 and the inlet of the second electronic three-way valve 8 are sequentially connected through pipelines;
the straight outflow port of the second electronic three-way valve 8 is connected with the inlet of the PVT circulation subsystem, and the outlet of the PVT circulation subsystem is connected with the inlet of the fifth circulation pump P5;
the third solenoid valve 11 is connected between the first solenoid valve 9 and the second circulation pump P2.
The first inlet 12-1 of the first heat exchanger 12 is connected to the outlet of the second electromagnetic valve 10, and the first outlet 12-2 of the first heat exchanger 12 is connected to the inlet of the third electromagnetic valve 11.
It should be noted that the above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the scope of protection thereof, and although the present utility model has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that various changes, modifications or equivalents may be made to the specific embodiments of the application after reading the present utility model, and these changes, modifications or equivalents are within the scope of protection of the claims appended hereto.
Claims (12)
1. A thermoelectric coupling power supply system, comprising: a buried pipe circulation subsystem, a heat pump circulation subsystem, an energy supply end circulation subsystem and a plurality of PVT circulation subsystems;
the buried pipe circulation subsystem is buried at the bottom of a preset area related to a user; the heat pump circulation subsystem is respectively connected with the energy supply tail end circulation subsystem and the buried pipe circulation subsystem; the PVT circulation subsystems are respectively arranged at the tops of houses of different users and connected with the buried pipe circulation subsystem;
the PVT circulation subsystem is used for providing domestic hot water and electric energy for a user room where the PVT circulation subsystem is installed; the solar energy heat-storage system is also used for carrying out heat exchange with shallow geothermal energy through the buried pipe circulation subsystem and carrying out solar energy cross-season energy storage;
and after heat exchange is carried out on the energy supply end circulation subsystem and the heat pump circulation subsystem, cooling and heating are carried out on all user rooms through the energy supply end circulation subsystem.
2. The system of claim 1, wherein the PVT circulation subsystem comprises at least one or more of the following: the energy storage system comprises a PVT assembly (1), an energy storage inverter (2), an energy storage battery (3), a heat collection water tank (4), a heat exchanger (5), a domestic hot water tank (6), a first electronic three-way valve (7) and a first circulating pump (P1);
the inlet of the first electronic three-way valve (7) is connected with the outlet of the first circulating pump (P1);
the curved flow outlet of the first electronic three-way valve (7) is connected with the inlet of the heat collecting water tank (4), the water outlet of the heat collecting water tank (4) is connected with the domestic hot water tank (6), and the domestic hot water tank (6) is connected with a user hot water supply pipeline (25) and a hot water return pipeline (26);
the direct outflow port of the first electronic three-way valve (7) is connected with a first inlet (5-1) of a heat exchanger (5), a first outlet (5-2) of the heat exchanger (5) is respectively connected with a pipeline inlet of the PVT assembly (1) and an inlet of a hot water tank (4), and a pipeline outlet of the PVT assembly (1) is connected with an inlet of the first circulating pump (P1);
the PVT assembly (1) is electrically connected with the energy storage inverter (2) and the energy storage battery (3) in sequence; the second inlet (5-3) of the heat exchanger (5) and the second outlet (5-4) of the heat exchanger (5) are connected to positions with different water pressures of the buried pipe circulation subsystem;
the domestic hot water tank (6) is used for providing domestic hot water for users and supplementing water in a flowing way through natural gravity;
the PVT assembly (1) is used for supplying power to a user.
3. A system according to claim 2, characterized in that the bottom of the heat collecting water tank (4) is provided with a water replenishment inlet (27), the water replenishment inlet (27) being for municipal water supply.
4. The system according to claim 2, wherein the heat collection water tank (4) is a pressure-bearing water tank, and the heat collection water tank (4) is internally provided with a heat exchange coil;
an electric heater is arranged in the domestic hot water tank (6);
the energy storage battery (3) is a lead-acid storage battery or a lithium ion battery.
5. The system of claim 1, wherein the heat pump cycle subsystem comprises at least one or more of the following: the device comprises a first heat exchanger (12), a second heat exchanger (14), a compressor (16), a four-way valve (15) and an expansion valve (13);
the inlet of the four-way valve (15) is connected with the compressor (16) and then is connected with the second outflow outlet (15-2) of the four-way valve (15);
after a first outflow outlet (15-1) of the four-way valve (15) is communicated with a first inlet (14-1) of a second heat exchanger (14), the first outflow outlet is connected with a second inlet (12-3) of a first heat exchanger (12) through a first outlet (14-2) of the second heat exchanger (14) and an expansion valve (13) in sequence, and a second outlet (12-4) of the first heat exchanger (12) is connected with a third outflow outlet (15-3) of the four-way valve (15);
a first inlet (12-1) of the first heat exchanger (12) is connected to a water outlet of the buried pipe circulation subsystem, and a first outlet (12-2) of the first heat exchanger (12) is connected to a water inlet of the buried pipe circulation subsystem;
a second inlet (14-3) of the second heat exchanger (14) is connected to a water outlet of the energy supply end circulation subsystem, and a second outlet (14-4) of the second heat exchanger (14) is connected to a water inlet of the energy supply end circulation subsystem;
when the heat pump circulation subsystem is in a heating mode, the four-way valve (15) is electrified, the first heat exchanger (12) works as an evaporator, and the second heat exchanger (14) works as a condenser; at the moment, a first outflow outlet (15-1) of the four-way valve (15) is communicated with an inlet of the four-way valve, a second outflow outlet (15-2) of the four-way valve (15) is communicated with a third outflow outlet (15-3) of the four-way valve (15), and the heat pump circulation subsystem realizes heating control by heat exchange with the ground pipe circulation subsystem;
when the heat pump circulation subsystem is in a refrigeration mode, the four-way valve (15) is not electrified, the first heat exchanger (12) works as a condenser, and the second heat exchanger (14) works as an evaporator; at the moment, a third flow bending outlet (15-3) of the four-way valve (15) is communicated with an inlet of the four-way valve, a first flow bending outlet (15-1) of the four-way valve (15) is communicated with a second flow bending outlet (15-2) of the four-way valve (15), and the heat pump circulation subsystem realizes refrigeration control by heat exchange with the ground pipe circulation subsystem.
6. The system of claim 5, wherein the energy-providing end-circulation subsystem comprises at least one or more of the following: a constant temperature water tank (17), a water separator (18), a plurality of energy supply end modules, a water collector (23) and a third circulating pump (P3); the heat pump side outlet (17-2) of the constant temperature water tank (17) is connected with the inlet of a third circulating pump (P3), the outlet of the third circulating pump (P3) is connected with the second inlet (14-3) of the second heat exchanger (14), and the second outlet (14-4) of the second heat exchanger (14) is connected with the heat pump side inlet (17-1) of the constant temperature water tank (17) to form loop heat exchange;
the user side water outlet (17-4) of the constant temperature water tank (17) is connected with the water inlet of the water separator (18), and a plurality of water outlets of the water separator (18) are respectively connected with the inlet of one energy supply end module;
the outlets of the energy supply tail end modules are respectively connected with the inlets corresponding to the water collectors (23), and the outlets of the water collectors (23) are connected with the user side water inlets (17-3) of the constant temperature water tank (17);
a plurality of energy supply end modules are respectively installed in rooms of different users.
7. The system of claim 6, wherein the energy delivery end module comprises: a fourth circulation pump (P4), a heating branch and a refrigerating branch;
an inlet of the fourth circulating pump (P4) is connected with an outlet corresponding to the water separator (18);
the outlet of the fourth circulating pump (P4) is connected with the inlet of the heating branch, the outlet of the heating branch is connected with the inlet of the water collector (23), and the heating branch is used for heating a user;
the outlet of the fourth circulating pump (P4) is connected with the inlet of the refrigerating branch, the outlet of the refrigerating branch is connected with the inlet of the water collector (23), and the refrigerating branch is used for refrigerating a user.
8. The system of claim 7, wherein the heating branch comprises: a fifth electromagnetic valve (20) and a floor heating coil pipe (22) are connected.
9. The system of claim 7, wherein the refrigeration branch comprises: a fourth solenoid valve (19) and a fan coil (21) are connected.
10. The system of claim 5, wherein the borehole circulation subsystem comprises at least one or more of the following: the system comprises a second electronic three-way valve (8), a first electromagnetic valve (9), a second electromagnetic valve (10), a third electromagnetic valve (11), a second circulating pump (P2), a fifth circulating pump (P5) and a buried pipe heat exchanger (24);
the outflow outlet of the second electronic three-way valve (8), the fifth circulating pump (P5), the second electromagnetic valve (10), the buried pipe heat exchanger (24), the second circulating pump (P2), the first electromagnetic valve (9) and the inlet of the second electronic three-way valve (8) are sequentially connected through pipelines;
the direct outflow port of the second electronic three-way valve (8) is connected with the inlet of the PVT circulation subsystem, and the outlet of the PVT circulation subsystem is connected with the inlet of the fifth circulation pump (P5);
the third electromagnetic valve (11) is connected between the first electromagnetic valve (9) and the second circulating pump (P2).
11. The system according to claim 10, wherein the first heat exchanger (12) first inlet (12-1) is connected to the outlet of the second solenoid valve (10), and the first heat exchanger (12) first outlet (12-2) is connected to the inlet of the third solenoid valve (11).
12. A system according to claim 10, wherein the borehole patterns of the borehole heat exchanger (24) include at least one or more of the following: horizontal burial and vertical burial.
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| CN202223193444.0U CN219531037U (en) | 2022-11-30 | 2022-11-30 | Thermoelectric coupling energy supply system |
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| CN202223193444.0U CN219531037U (en) | 2022-11-30 | 2022-11-30 | Thermoelectric coupling energy supply system |
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