Heat storage system utilizing photovoltaic curtain wall waste heat and heating tower
Technical Field
The invention relates to the technical field of solar energy utilization, in particular to a heat storage system utilizing photovoltaic curtain wall waste heat and a heating tower.
Background
The photovoltaic curtain wall is a high-end product of photovoltaic building integration, and is a novel building energy mode for organically combining photovoltaic power generation and a building by arranging a photovoltaic module on the outer surface of a building envelope or directly replacing the building envelope. The photovoltaic curtain wall receives solar radiation, and the photovoltaic module converts the solar radiation into electric energy. The photovoltaic module generates electricity and simultaneously radiates heat to the environment near the photovoltaic curtain wall and conducts heat convection with the air flow in the air flow channel. In the operation of the photovoltaic curtain wall system, the photoelectric conversion efficiency of the solar cell is reduced along with the increase of the working temperature, and the energy conversion efficiency of the solar cell is reduced by 0.5 percent for every 1 ℃ increase of the temperature of the photovoltaic module of the crystalline silicon.
China has rich solar energy resources, and is often characterized by discontinuity, instability and the like due to the restriction of factors such as geography, seasons, day and night, weather change and the like. The utilization of heat therefore often also appears to be mismatched in time and space.
Disclosure of Invention
The invention aims to provide a heat storage system utilizing photovoltaic curtain wall waste heat and a heating tower, and solves the problem of unmatched energy supply and demand in time and space by utilizing a phase change energy storage technology.
In order to solve the technical problems, the invention adopts the following technical scheme:
the utility model provides an utilize heat accumulation system of photovoltaic curtain waste heat and heating tower which characterized in that: bury coil pipe (13) including photovoltaic box (2), geomantic omen heat exchanger (8), heating tower (17) and ground, its characterized in that: the photovoltaic curtain wall comprises a photovoltaic box body (2), a photovoltaic curtain wall panel (3) is arranged at the front part of the photovoltaic box body (2), a photovoltaic curtain wall back plate is arranged at the rear part of the photovoltaic box body (2), a plurality of groups of photovoltaic plates (1) are attached to the photovoltaic curtain wall panel (3), a closed cavity (2a) is formed in the rear part of each photovoltaic plate (1), an upper photovoltaic curtain wall outlet (4) and a lower photovoltaic curtain wall inlet (5) are respectively formed in the upper part and the lower part of the photovoltaic box body (2), the upper photovoltaic curtain wall outlet (4) is connected with a pipeline fan (7) through a galvanized steel pipe (6), the pipeline fan (7) is connected with an air-water heat exchanger (8) through the galvanized steel pipe (6), and the air-water heat exchanger (8) enters the closed cavity (2a) of the photovoltaic curtain wall from the;
the buried coil pipe (13) is connected with the wind-water heat exchanger (8) through a ground source side water return pipe (10) and a ground source side water supply pipe (11) respectively, the heating tower (17) is connected with the ground source side water return pipe (10) through a heating tower water supply pipe (14), the heating tower (17) is connected with the ground source side water supply pipe (11) through a heating tower water return pipe (15), an electric valve (16) is arranged on the heating tower water return pipe (15), and a ground source side water pump (12) is arranged on the ground source side water supply pipe (11);
the heat required by the buried coil pipe (13) is sent into the wind-water heat exchanger (8) and the heating tower (17) through a ground source side water supply pipe (11) and a ground source side water pump (12), and finally returns to the buried coil pipe (13) through a ground source side water return pipe (10).
An electric valve (9) is installed on the galvanized steel pipe (6), and the electric valve (9) is automatically opened when the wind-water heat exchanger (8) is operated in transition seasons.
The electric valve (16) is a valve for controlling the operation of any equipment of the wind-water heat exchanger (8) and the heating tower (17) according to a control strategy, and can be respectively communicated with one side of the wind-water heat exchanger (8) and one side of the heating tower (17).
The outlet of the buried coil (13) is connected with a ground source side water pump (12), and the buried coil is respectively switched to an air-water heat exchanger (8) or a heating tower (17) for heat storage according to a control strategy.
The invention has the beneficial effects that:
1. the photovoltaic curtain wall combines the wind-water heat exchanger and the automatic control technology, can generate redundant heat with the photovoltaic panel, utilizes the wind-water heat exchanger to transfer the heat to the underground, also indirectly improves the generating efficiency of the photovoltaic panel, thereby preparing for the sustainable development of renewable energy sources.
2. The wind-water heat exchanger can utilize the generated excessive heat of the photovoltaic panel, and the heating tower can store heat for a soil source to relieve the problem of cold accumulation of the soil. Therefore, the application field and the application range of the soil source heat pump are improved, and the operation efficiency and Cop of the unit are also improved.
Drawings
FIG. 1 is a schematic view of a photovoltaic curtain wall of a heat storage system utilizing waste heat of the photovoltaic curtain wall and a heating tower according to the present invention;
FIG. 2 is a flow chart of the operation of the heat storage system utilizing the residual heat of the photovoltaic curtain wall and the heating tower in the transition season;
FIG. 3 is a control logic diagram of the operation of the heat storage system utilizing the residual heat of the photovoltaic curtain wall and the heating tower in the transition season according to the present invention;
in the figure, 1, a photovoltaic panel, 2, a photovoltaic box body, 2a, a closed cavity, 3, a photovoltaic curtain wall panel, 4, an upper outlet of a photovoltaic curtain wall, 5, a lower outlet of the photovoltaic curtain wall, 6, a galvanized steel pipe, 7, a pipeline fan, 8, a wind-water heat exchanger, 9, an air duct electric valve, 10, a ground source side water return pipe, 11, a ground source side water supply pipe, 12, a ground source side water pump, 13, a buried coil pipe, 14 a heating tower water supply pipe, 15 a heating tower water return pipe, 16 electric valves and 17 a heating tower.
Detailed Description
In order to make the technical means, the original characteristics, the achieved purposes and the effects of the invention easily understood, the invention is further described below with reference to the specific embodiments and the attached drawings, but the following embodiments are only the preferred embodiments of the invention, and not all embodiments. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative efforts belong to the protection scope of the present invention.
Specific embodiments of the present invention are described below with reference to the accompanying drawings.
Example 1
As shown in fig. 1-3
A heat storage system utilizing photovoltaic curtain wall waste heat and a heating tower comprises a photovoltaic box body 2, a wind-water heat exchanger 8, a heating tower 17 and an underground coil 13, wherein the front part of the photovoltaic box body 2 is provided with a photovoltaic curtain wall panel 3, the rear part of the photovoltaic box body 2 is provided with a photovoltaic curtain wall back plate, a plurality of groups of photovoltaic panels 1 are attached to the photovoltaic curtain wall panel 3, the rear part of each photovoltaic panel 1 is provided with a closed cavity 2a, the upper part and the lower part of the photovoltaic box body 2 are respectively provided with a photovoltaic curtain wall upper outlet 4 and a photovoltaic curtain wall lower inlet 5, the photovoltaic curtain wall upper outlet 4 is connected with a pipeline fan 7 through a galvanized steel pipe 6, the pipeline fan 7 is connected with the wind-water heat exchanger 8 through the galvanized steel pipe 6, and the wind-water heat exchanger 8 enters the closed cavity 2a of;
the buried coil pipe 13 is respectively connected with the wind-water heat exchanger 8 through a ground source side water return pipe 10 and a ground source side water supply pipe 11, the heating tower 17 is connected with the ground source side water return pipe 10 through a heating tower water supply pipe 14, the heating tower 17 is connected with the ground source side water supply pipe 11 through a heating tower water return pipe 15, an electric valve 16 is arranged on the heating tower water return pipe 15, and a ground source side water pump 12 is arranged on the ground source side water supply pipe 11;
the heat required by the buried coil 13 is sent to the wind-water heat exchanger 8 and the heating tower 17 through the ground source side water supply pipe 11 and the ground source side water pump 12, and finally returned to the buried coil 13 through the ground source side water return pipe 10.
An electric valve 9 is installed on the galvanized steel pipe 6, and the electric valve 9 is automatically opened when the wind-water heat exchanger 8 is operated in a transition season.
The electric valve 16 is a valve for controlling the operation of any one of the wind-water heat exchanger 8 and the heating tower 17 according to a control strategy, and can be respectively communicated with one side of the wind-water heat exchanger 8 and one side of the heating tower 17.
The outlet of the buried coil 13 is connected with a ground source side water pump 12, and the buried coil is respectively switched to the wind-water heat exchanger 8 or the heating tower 17 for heat storage according to a control strategy.
When the solar energy curtain wall is operated in excessive seasons, the soil can be stored with heat in two modes, firstly, the wind-water heat exchanger 8 is used for heat exchange, secondly, the heating tower 17 is used for heat storage, when sunlight irradiates on the photovoltaic panel 1, the photovoltaic panel 1 generates electricity and generates heat, air in the curtain wall is communicated into the wind-water heat exchanger 8 through the galvanized steel pipe 6 through the pipeline fan 7 to exchange heat with ground source side water, and water in the underground coil pipe 13 is sent into the wind-water heat exchanger 8 through the ground source side water pump to exchange heat with hot air.
The heating tower 17 stores heat in soil in such a manner that when the temperature in the heating tower 17 is high, that is, at 20 ℃ or higher, the electric valve 16 is opened, the water in the heating tower 17 is supplied to the ground through the heating tower water supply pipe 14, and the heating tower water return pipe 15 returns to the heating tower through the ground-side water pump 12, thereby storing heat in soil.
When the temperature of the air in the photovoltaic curtain wall is more than or equal to 25 ℃, the air-water heat exchanger 8 is started, and the residual heat in the curtain wall is sent to the air-water heat exchanger 8 for heat exchange with the air; when the air temperature in the photovoltaic curtain wall is less than 25 ℃ and the water temperature in the heating tower 17 is more than or equal to 20 ℃, the heating tower 17 is adopted to store heat for the soil, and the control flow chart is shown in figure 3.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.