CN217464630U - Solar photovoltaic photo-thermal system - Google Patents
Solar photovoltaic photo-thermal system Download PDFInfo
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- CN217464630U CN217464630U CN202221097272.4U CN202221097272U CN217464630U CN 217464630 U CN217464630 U CN 217464630U CN 202221097272 U CN202221097272 U CN 202221097272U CN 217464630 U CN217464630 U CN 217464630U
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Abstract
The utility model provides a solar photovoltaic photo-thermal system relates to heating heat supply technical field, this solar photovoltaic photo-thermal system includes solar photovoltaic photo-thermal collector, ground source heat pump well, the ground source heat pump, user's demand heat source end and controller, acquire solar photovoltaic photo-thermal collector through the controller, the temperature of ground source heat pump well and user's demand heat source end, and control opening of each circulating pump and stop, can store the heat that solar photovoltaic photo-thermal collector produced to ground source heat pump well in high-efficiently, and supply for user's demand heat source end as required through the heat of ground source heat pump with the heat of storage in the ground source heat pump well, consequently, the comprehensive utilization of the energy has been improved.
Description
Technical Field
The utility model belongs to the technical field of heating heat supply technique and specifically relates to a solar photovoltaic photo-thermal system is related to.
Background
At present, global energy situation is tense, climate warming seriously threatens economic development and people's life health, all countries in the world seek how to fully utilize energy, improve efficiency and develop low-carbon economy all the time to obtain sustainable development and obtain an advantage. Solar energy has the obvious advantages of cleanness, continuous source, safety and the like, but the generating efficiency of photovoltaic solar energy is more than twenty percent, most energy is wasted, and how to comprehensively utilize the energy is a direction which can be deeply researched.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a solar photovoltaic light and heat system to improve the comprehensive utilization ratio of the energy.
The embodiment of the utility model provides a solar photovoltaic photo-thermal system, include: the system comprises a solar photovoltaic photo-thermal collector, a ground source heat pump well, a ground source heat pump, a user heat demand source end and a controller;
an outlet of the solar photovoltaic photo-thermal collector is communicated with a first inlet of the ground source heat pump well through a first pipeline, and an inlet of the solar photovoltaic photo-thermal collector is communicated with a first outlet of the ground source heat pump well through a second pipeline; a second outlet of the ground source heat pump well is communicated with a first inlet of the ground source heat pump through a third pipeline, and a second inlet of the ground source heat pump well is communicated with a first outlet of the ground source heat pump through a fourth pipeline; a second outlet of the ground source heat pump is communicated with an inlet of the user heat demand source end through a fifth pipeline, and a second inlet of the ground source heat pump is communicated with an outlet of the user heat demand source end through a sixth pipeline;
a first temperature sensor is arranged on the first pipeline, a first circulating pump is arranged on the second pipeline, a second circulating pump is arranged on the third pipeline, a third circulating pump is arranged on the fifth pipeline, a second temperature sensor is arranged in the ground source heat pump well, and a third temperature sensor is arranged in the user heat demand source end;
the first temperature sensor, the second temperature sensor, the third temperature sensor, the first circulating pump, the second circulating pump and the third circulating pump are respectively connected with the controller; the controller is used for respectively acquiring temperature data detected by the first temperature sensor, the second temperature sensor and the third temperature sensor and controlling the start and stop of the first circulating pump, the second circulating pump and the third circulating pump.
Further, when the difference between a first temperature value detected by the first temperature sensor and a second temperature value detected by the second temperature sensor is greater than or equal to a preset first difference value, the first circulating pump is started so that heat generated by the solar photovoltaic photo-thermal collector is stored in the ground source heat pump well;
and when the third temperature value detected by the third temperature sensor is smaller than the preset required temperature value, the second circulating pump and the third circulating pump are started, so that the ground source heat pump extracts heat from the ground source heat pump well and supplies the heat to the user required heat source end.
Furthermore, a first three-way valve is connected to the third pipeline, and a first inlet, a second inlet and an outlet of the first three-way valve are respectively communicated with an outlet of the solar photovoltaic photo-thermal collector, a second outlet of the ground source heat pump well and the second circulating pump; a second three-way valve is connected to the fourth pipeline, and an inlet, a first outlet and a second outlet of the second three-way valve are respectively communicated with a first outlet of the ground source heat pump, an inlet of the solar photovoltaic photo-thermal collector and a second inlet of the ground source heat pump well; the first pipeline is provided with a first electromagnetic valve;
the first three-way valve, the second three-way valve and the first electromagnetic valve are respectively connected with the controller, and the controller is also used for controlling the conduction state of the first three-way valve and the second three-way valve and the opening and closing state of the first electromagnetic valve.
Further, when a first temperature value detected by the first temperature sensor is greater than or equal to a preset lower temperature limit and a third temperature value detected by the third temperature sensor is less than a preset required temperature value, a first inlet and an outlet of the first three-way valve are communicated, a second inlet of the first three-way valve is closed, an inlet and a first outlet of the second three-way valve are communicated, a second outlet of the second three-way valve is closed, the first electromagnetic valve is in a closed state, and the second circulating pump and the third circulating pump are started, so that heat generated by the solar photovoltaic photo-thermal collector is supplied to a user required heat source end through the ground source heat pump;
when the first temperature value is smaller than the preset lower temperature limit and the third temperature value is smaller than the required temperature value, the second inlet and the outlet of the first three-way valve are communicated, the first inlet of the first three-way valve is closed, the inlet and the second outlet of the second three-way valve are communicated, the first outlet of the second three-way valve is closed, the first electromagnetic valve is in a closed state, and the second circulating pump and the third circulating pump are started, so that the heat stored in the ground source heat pump well is supplied to a user required heat source end through the ground source heat pump;
when the first temperature value is greater than or equal to the preset lower temperature limit and the third temperature value is greater than or equal to the required temperature value, the first electromagnetic valve is in an open state, and the first circulating pump is started, so that heat generated by the solar photovoltaic photo-thermal collector is stored in the ground source heat pump well.
Further, a first outlet of the second three-way valve is communicated with an inlet of the solar photovoltaic photo-thermal collector through a first circulating pump; the outlet of the first three-way valve is also communicated with the inlet of the user heat demand source end through a seventh pipeline; the fourth pipeline is connected with the sixth pipeline through a third three-way valve and a fourth three-way valve, a first inlet, a second inlet and an outlet of the third three-way valve are respectively communicated with a first outlet of the ground source heat pump, a second outlet of the fourth three-way valve and an inlet of the second three-way valve, and an inlet and a first outlet of the fourth three-way valve are respectively communicated with an outlet of a user heat demand source end and a second inlet of the ground source heat pump; a second electromagnetic valve is arranged on the seventh pipeline, and a third electromagnetic valve is arranged on the pipeline between the second circulating pump and the ground source heat pump;
the third three-way valve, the fourth three-way valve, the second electromagnetic valve and the third electromagnetic valve are respectively connected with the controller; the controller is also used for controlling the conducting state of the third three-way valve and the fourth three-way valve and the opening and closing state of the second electromagnetic valve and the third electromagnetic valve.
Further, when the difference between the first temperature value detected by the first temperature sensor and the preset required temperature value is greater than or equal to a preset second difference value, and the third temperature value detected by the third temperature sensor is smaller than the required temperature value, the first inlet and the outlet of the first three-way valve are communicated, the second inlet of the first three-way valve is closed, the inlet and the second outlet of the fourth three-way valve are communicated, the first outlet of the fourth three-way valve is closed, the second inlet and the outlet of the third three-way valve are communicated, the first inlet of the third three-way valve is closed, the inlet and the first outlet of the second three-way valve are communicated, the second outlet of the second three-way valve is closed, the first electromagnetic valve and the third electromagnetic valve are in a closed state, the second electromagnetic valve is in an open state, and the first circulating pump is started, so that heat generated by the solar photovoltaic photo-thermal collector is supplied to the user required heat source end.
Further, the user demand heat source is one or more.
Further, the user demand heat source end comprises a hot water tank and heating equipment; and a second outlet of the ground source heat pump is respectively communicated with an inlet of the heat exchange coil of the hot water tank and an inlet of a heating heat exchanger of the heating equipment through a fifth pipeline, and a second inlet of the ground source heat pump is respectively communicated with an outlet of the heat exchange coil and an outlet of the heating heat exchanger through a sixth pipeline.
Further, the solar photovoltaic photo-thermal collector comprises a solar photovoltaic photo-thermal plate and a tube plate structure arranged on the back of the solar photovoltaic photo-thermal plate, and heat generated by the solar photovoltaic photo-thermal plate is transferred into the medium of the first pipeline through the tube plate structure.
Further, the solar photovoltaic photo-thermal system also comprises a photovoltaic inverter connected with the solar photovoltaic photo-thermal plate.
The embodiment of the utility model provides a solar photovoltaic photo-thermal system, include: the system comprises a solar photovoltaic photo-thermal heat collector, a ground source heat pump well, a ground source heat pump, a user heat demand source end and a controller; an outlet of the solar photovoltaic photo-thermal collector is communicated with a first inlet of the ground source heat pump well through a first pipeline, and an inlet of the solar photovoltaic photo-thermal collector is communicated with a first outlet of the ground source heat pump well through a second pipeline; a second outlet of the ground source heat pump well is communicated with a first inlet of the ground source heat pump through a third pipeline, and a second inlet of the ground source heat pump well is communicated with a first outlet of the ground source heat pump through a fourth pipeline; a second outlet of the ground source heat pump is communicated with an inlet of the user heat demand source end through a fifth pipeline, and a second inlet of the ground source heat pump is communicated with an outlet of the user heat demand source end through a sixth pipeline; a first temperature sensor is arranged on the first pipeline, a first circulating pump is arranged on the second pipeline, a second circulating pump is arranged on the third pipeline, a third circulating pump is arranged on the fifth pipeline, a second temperature sensor is arranged in the ground source heat pump well, and a third temperature sensor is arranged in the user heat demand source end; the first temperature sensor, the second temperature sensor, the third temperature sensor, the first circulating pump, the second circulating pump and the third circulating pump are respectively connected with the controller; the controller is used for respectively acquiring temperature data detected by the first temperature sensor, the second temperature sensor and the third temperature sensor and controlling the start and stop of the first circulating pump, the second circulating pump and the third circulating pump. According to the solar photovoltaic photo-thermal system, the temperature of the solar photovoltaic photo-thermal collector, the temperature of the ground source heat pump well and the temperature of the user demand heat source end are obtained through the controller, the start and stop of the first circulating pump, the second circulating pump and the third circulating pump are controlled, heat generated by the solar photovoltaic photo-thermal collector can be efficiently stored in the ground source heat pump well, the heat stored in the ground source heat pump well is supplied to the user demand heat source end through the ground source heat pump according to needs, and therefore the comprehensive utilization rate of energy is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a working schematic diagram of a solar photovoltaic photo-thermal system according to an embodiment of the present invention;
fig. 2 is a schematic diagram of another solar photovoltaic/thermal system according to an embodiment of the present invention;
fig. 3 is a schematic diagram of another solar photovoltaic/thermal system according to an embodiment of the present invention;
FIG. 4 is a working schematic diagram of the solar photovoltaic photo-thermal system shown in FIG. 3 under a first working condition;
FIG. 5 is a working schematic diagram of the solar photovoltaic photo-thermal system shown in FIG. 3 under a second operating condition;
FIG. 6 is a working schematic diagram of the solar photovoltaic photo-thermal system shown in FIG. 3 under a third working condition;
fig. 7 is a schematic diagram of another solar photovoltaic/thermal system according to an embodiment of the present invention;
FIG. 8 is a working schematic diagram of the solar photovoltaic photo-thermal system shown in FIG. 7 under a fourth operating condition;
FIG. 9 is a working schematic diagram of the solar photovoltaic photo-thermal system shown in FIG. 7 under a fifth operating condition;
FIG. 10 is a working schematic diagram of the solar photovoltaic photo-thermal system shown in FIG. 7 under a sixth operating condition;
fig. 11 is a working principle diagram of the solar photovoltaic photo-thermal system shown in fig. 7 under a seventh working condition.
Icon: 110-solar photovoltaic photo-thermal collector; 120-ground source heat pump well; 130-ground source heat pump; 140-user demand heat source end; 141-a hot water tank; 1411-heat exchange coil; 1412-hot water pipe; 1413-a water supply pipe; 1414-an exhaust valve; 142-heating equipment; 1421-heat exchanger for heating; 150-a controller; 160-a photovoltaic inverter; 200-national grid; c1 — first line; c2 — second line; c3 — third line; c4 — fourth line; c5-fifth line; c6 — sixth line; c7 — seventh line; p1-first circulation pump; p2-second circulation pump; p3-third circulation pump; t1 — first temperature sensor; t2 — second temperature sensor; t3 — third temperature sensor; T31-Hot Water tank temperature Probe; t32-heating equipment temperature probe; m1-first three-way valve; m2 — a second three-way valve; m3-third three-way valve; m4 — a fourth three-way valve; k1-first solenoid valve; k2-second solenoid valve; k3-third solenoid valve; k4-fourth solenoid valve; k5-fifth solenoid valve; k6-sixth solenoid valve; k7-seventh solenoid valve.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Unable make full use of solar energy of present solar photovoltaic light and heat board, the comprehensive utilization of the energy is lower, based on this, the embodiment of the utility model provides a pair of solar photovoltaic light and heat system can improve the comprehensive utilization of the energy.
To facilitate understanding of the present embodiment, a solar photovoltaic photo-thermal system disclosed in the embodiments of the present invention is described in detail below.
Referring to the working schematic diagram of a solar photovoltaic photo-thermal system shown in fig. 1, an embodiment of the present invention provides a solar photovoltaic photo-thermal system, which includes: the system comprises a solar photovoltaic photo-thermal collector 110, a ground source heat pump well 120, a ground source heat pump 130, a user demand heat source end 140 and a controller 150.
Specifically, the outlet of the solar photovoltaic photo-thermal collector 110 is communicated with the first inlet of the ground source heat pump well 120 through a first pipeline C1, and the inlet of the solar photovoltaic photo-thermal collector 110 is communicated with the first outlet of the ground source heat pump well 120 through a second pipeline C2; the second outlet of the ground source heat pump well 120 is communicated with the first inlet of the ground source heat pump 130 through a third pipeline C3, and the second inlet of the ground source heat pump well 120 is communicated with the first outlet of the ground source heat pump 130 through a fourth pipeline C4; the second outlet of the ground source heat pump 130 is communicated with the inlet of the consumer demand heat source 140 through a fifth pipeline C5, and the second inlet of the ground source heat pump 130 is communicated with the outlet of the consumer demand heat source 140 through a sixth pipeline C6.
A first temperature sensor T1 is arranged on the first pipeline C1, a first circulating pump P1 is arranged on the second pipeline C2, a second circulating pump P2 is arranged on the third pipeline C3, a third circulating pump P3 is arranged on the fifth pipeline C5, a second temperature sensor T2 is arranged in the ground source heat pump well 120, and a third temperature sensor T3 is arranged in the user demand heat source end 140; the first temperature sensor T1, the second temperature sensor T2, the third temperature sensor T3, the first circulation pump P1, the second circulation pump P2 and the third circulation pump P3 are connected to the controller 150, respectively. The controller 150 is configured to acquire temperature data detected by the first temperature sensor T1, the second temperature sensor T2, and the third temperature sensor T3, and control start and stop of the first circulation pump P1, the second circulation pump P2, and the third circulation pump P3.
A medium for transferring heat, which may be, but not limited to, an antifreeze solution, flows through the pipes (C1 to C6). Through the flowing of media in the first pipeline C1 and the second pipeline C2, heat generated by the solar photovoltaic photo-thermal collector 110 can be transferred to the ground source heat pump well 120, and the ground source heat pump well 120 is used for storing the heat transferred by the solar photovoltaic photo-thermal collector 110; the ground source heat pump 130 can extract heat in the ground source heat pump well 120 through the flow of the medium in the third pipeline C3 and the fourth pipeline C4, and the ground source heat pump 130 can also heat the medium in the fifth pipeline C5 as required and supply the heat to the user demand heat source end 140 through the flow of the medium in the fifth pipeline C5 and the sixth pipeline C6.
The first temperature sensor T1 may sense whether the temperature of the medium in the first pipe C1 (i.e., the temperature of the solar photovoltaic photo-thermal collector 110) may be utilized, and preferably, the first temperature sensor T1 may be disposed at the outlet of the solar photovoltaic photo-thermal collector 110. The second temperature sensor T2 may sense the temperature of the ground source heat pump well 120, and the third temperature sensor T3 may sense the temperature of the user's desired heat source end 140. The circulation pumps (P1, P2, P3) are used for promoting the circulation flow of the medium in the corresponding pipelines, and the on and off of each circulation pump are controlled by the controller 150 based on the temperature data detected by each temperature sensor (T1, T2, T3), so that the heat generated by the solar photovoltaic photo-thermal collector 110 can be efficiently stored in the ground source heat pump wells 120, and the heat stored in the ground source heat pump wells 120 can be supplied to the user demand heat source end 140 through the ground source heat pumps 130. In addition, the solar photovoltaic photo-thermal system shown in fig. 1 is simple to operate and low in control cost.
The embodiment of the utility model provides a solar photovoltaic photo-thermal system, acquire solar photovoltaic photo-thermal heat collector 110 through controller 150, the temperature of ground source heat pump well 120 and user demand heat source end 140, and control first circulating pump P1, opening of second circulating pump P2 and third circulating pump P3 stops, can store the heat that solar photovoltaic photo-thermal heat collector 110 produced to ground source heat pump well 120 high-efficiently, and supply the heat of storage for user demand heat source end 140 in ground source heat pump well 120 as required through ground source heat pump 130, consequently, the comprehensive utilization of the energy has been improved.
In some possible embodiments, in order to further improve the comprehensive utilization rate of energy, when the difference between the first temperature value detected by the first temperature sensor T1 and the second temperature value detected by the second temperature sensor T2 is greater than or equal to a preset first difference value, the controller 150 activates the first circulation pump P1, so that the heat generated by the solar photovoltaic photo-thermal collector 110 is stored in the ground source heat pump well 120 for use at any time or in different seasons, and the circulation path of the medium is as follows: the solar photovoltaic photo-thermal collector 110 → the first temperature sensor T1 → the ground source heat pump well 120 → the first circulation pump P1 → the solar photovoltaic photo-thermal collector 110. When the third temperature value detected by the third temperature sensor T3 is less than the preset demand temperature value (i.e. when the user demand heat source end 140 needs heat), the controller 150 starts the second circulation pump P2 and the third circulation pump P3, so that the ground source heat pump 130 extracts heat from the ground source heat pump well 120 and supplies the heat to the user demand heat source end 140, where the circulation path of the medium is: the ground source heat pump well 120 → the second circulation pump P2 → the ground source heat pump 130 → the ground source heat pump well 120, the ground source heat pump 130 → the third circulation pump P3 → the user heat demand source end 140 → the ground source heat pump 130.
It should be noted that, both the first difference value and the required temperature value may be set according to an actual requirement, and are not limited herein. For example, the first difference is 10 ℃ and the desired temperature value is 50 ℃.
Optionally, the solar photovoltaic photo-thermal collector 110 includes a solar photovoltaic photo-thermal plate and a tube plate structure disposed on the back of the solar photovoltaic photo-thermal plate, and heat generated by the solar photovoltaic photo-thermal plate is transferred into the medium of the first pipeline C1 through the tube plate structure.
Further, as shown in fig. 1, the solar photovoltaic photo-thermal system further includes a photovoltaic inverter 160 connected to the solar photovoltaic photo-thermal plate, and electricity generated by the solar photovoltaic photo-thermal plate can be connected to the national power grid 200 through the photovoltaic inverter 160, so as to be directly used by a user or uniformly allocated by the national power grid 200.
Optionally, the user demand heat source 140 may be one or more. For example, referring to the working schematic diagram of another solar photovoltaic photo-thermal system shown in fig. 2, the user demand heat source end 140 includes a hot water tank 141 and a heating device 142; specifically, the second outlet of the ground source heat pump 130 is respectively communicated with the inlet of the heat exchange coil 1411 of the hot water tank 141 and the inlet of the heating heat exchanger 1421 of the heating device 142 through a fifth pipeline C5, and the second inlet of the ground source heat pump 130 is respectively communicated with the outlet of the heat exchange coil 1411 and the outlet of the heating heat exchanger 1421 through a sixth pipeline C6; the third temperature sensor T3 includes a hot water tank temperature probe T31 provided in the hot water tank 141 and a heating equipment temperature probe T32 provided in the heating equipment 142. When the hot water tank 141 requires heat (e.g., the hot water tank temperature value detected by the hot water tank temperature probe T31 is less than the preset first required temperature value) and/or the heating equipment 142 requires heat (e.g., the heating equipment temperature value detected by the heating equipment temperature probe T32 is less than the preset second required temperature value), the ground source heat pump 130 directly extracts heat from the ground source heat pump well 120 and heats up for use.
As shown in fig. 2, the hot water tank 141 further includes a hot water pipe 1412, a water supply pipe 1413, and an exhaust valve 1414, and the cold water entering the hot water tank 141 from the water supply pipe 1413 is heated by the heat medium in the heat exchange coil 1411, and the heated hot water flows out of the hot water pipe 1412 for use by a user. The exhaust valve 1414 may be an automatic exhaust valve for exhausting the exhaust gas generated in the hot water tank 141.
As shown in fig. 2, the fifth pipeline C5 includes two branch pipelines respectively connected to the inlet of the heat exchanging coil 1411 and the inlet of the heating heat exchanger 1421, the two branch pipelines are respectively provided with a fourth solenoid valve K4 and a sixth solenoid valve K6, the fourth solenoid valve K4 is a heat medium switch of the hot water tank 141 for controlling whether to supply heat to the hot water tank 141, and the sixth solenoid valve K6 is a heat medium switch of the heating equipment 142 for controlling whether to supply heat to the heating equipment 142. The fourth solenoid valve K4 and the sixth solenoid valve K6 are connected to the controller 150, respectively, and the controller 150 is also used to control the open and closed states of the fourth solenoid valve K4 and the sixth solenoid valve K6. The fourth solenoid valve K4 and the sixth solenoid valve K6 may be opened individually or at the same time, that is, they may be opened individually or at the same time to supply heat to the hot water tank 141 or the heating equipment 142.
In some possible embodiments, in order to further improve the comprehensive utilization rate of energy, taking the user demand heat source end 140 including the hot water tank 141 and the heating device 142 as an example, referring to an operation schematic diagram of another solar photovoltaic photo-thermal system shown in fig. 3, in the solar photovoltaic photo-thermal system, the third pipeline C3 is connected with a first three-way valve M1, and the first inlet 1, the second inlet 3, and the outlet 2 of the first three-way valve M1 are respectively communicated with the outlet of the solar photovoltaic photo-thermal collector 110, the second outlet of the geothermal pump well 120, and the second circulation pump P2; the fourth pipeline C4 is connected with a second three-way valve M2, and an inlet 5, a first outlet 4 and a second outlet 6 of the second three-way valve M2 are respectively communicated with the first outlet of the ground source heat pump 130, the inlet of the solar photovoltaic photo-thermal collector 110 and the second inlet of the ground source heat pump well 120; the first line C1 is provided with a first solenoid valve K1. The first three-way valve M1, the second three-way valve M2, and the first solenoid valve K1 are respectively connected to the controller 150, and the controller 150 is also configured to control the conduction states of the first three-way valve M1 and the second three-way valve M2, and the open-close state of the first solenoid valve K1. In addition, a fifth solenoid valve K5 and a seventh solenoid valve K7 are respectively disposed on two branch pipes of the sixth pipeline C6, the fifth solenoid valve K5 is a refrigerant return switch of the hot water tank 141, and the seventh solenoid valve K7 is a refrigerant return switch of the heating equipment 142. The fifth electromagnetic valve K5 and the seventh electromagnetic valve K7 are connected to the controller 150, respectively, and the controller 150 is also used to control the open and close states of the fifth electromagnetic valve K5 and the seventh electromagnetic valve K7. When the fourth solenoid valve K4 and the fifth solenoid valve K5 are both open, heat can be supplied to the hot water tank 141; when the sixth solenoid valve K6 and the seventh solenoid valve K7 are both open, heat can be supplied to the heating equipment 142; when the fourth, fifth, sixth, and seventh solenoid valves K4, K5, K6, and K7 are all open, heat can be supplied to the hot water tank 141 and the heating apparatus 142. The solar photovoltaic photo-thermal system has a plurality of operating conditions, which are exemplarily described in detail below with reference to fig. 4 to 6.
When the first temperature value detected by the first temperature sensor T1 is greater than or equal to the preset lower temperature limit (that is, the solar photovoltaic photo-thermal collector 110 meets the heat supply requirement), and the third temperature value detected by the third temperature sensor T3 is less than the preset required temperature value (that is, the user requires heat from the heat source end 140, for example, the hot water tank temperature value detected by the hot water tank temperature probe T31 is less than the preset first required temperature value and/or the heating equipment temperature value detected by the heating equipment temperature probe T32 is less than the preset second required temperature value), the solar photovoltaic photo-thermal system is in the first operating condition, as shown in fig. 4, at this time, the first inlet 1 and the outlet 2 of the first three-way valve M1 are connected, the second inlet 3 of the first three-way valve M1 is closed, the inlet 5 and the first outlet 4 of the second three-way valve M2 are connected, the second outlet 6 of the second three-way valve M2 is closed, and the first electromagnetic valve K1 is in the closed state, the controller 150 starts the second circulation pump P2 and the third circulation pump P3, so that the heat generated by the solar photovoltaic photo-thermal collector 110 is supplied to the user demand heat source 140 through the ground source heat pump 130, that is, the heat generated by the solar photovoltaic photo-thermal collector 110 is heated by the ground source heat pump 130 and is supplied to the user demand heat source 140 for use. Taking the hot water tank 141 requiring heat, the first outlet 4 of the second three-way valve M2 is communicated with the inlet of the solar photovoltaic photo-thermal collector 110 through the first circulating pump P1, at this time, the first circulating pump P1 can be further started, and the circulation path of the medium is: the solar photovoltaic photo-thermal collector 110 → the first temperature sensor T1 → the first three-way valve M1(1, 2 way, 3 off) → the second circulation pump P2 → the ground source heat pump 130 → the second three-way valve M2(4, 5 way, 6 off) → the first circulation pump P1 → the solar photovoltaic photo-thermal collector 110, the ground source heat pump 130 → the third circulation pump P3 → the fourth electromagnetic valve K4 → the hot water tank 141 → the fifth electromagnetic valve K5 → the ground source heat pump 130.
It should be noted that the preset lower temperature limit, the first required temperature value and the second required temperature value may be set according to actual requirements, and are not limited herein. For example, the lower temperature limit is set to 5 ℃, the first desired temperature value is set to 50 ℃, and the second desired temperature value is set to 40 ℃.
When the first temperature value is less than the preset lower temperature limit (that is, the solar photovoltaic photo-thermal collector 110 does not meet the heat supply requirement), and the third temperature value is less than the required temperature value, the solar photovoltaic photo-thermal system is in the second working condition, as shown in fig. 5, at this time, the second inlet 3 and the outlet 2 of the first three-way valve M1 are conducted, the first inlet 1 of the first three-way valve M1 is closed, the inlet 5 and the second outlet 6 of the second three-way valve M2 are conducted, the first outlet 4 of the second three-way valve M2 is closed, the first electromagnetic valve K1 is in the closed state, and the controller 150 starts the second circulating pump P2 and the third circulating pump P3, so that the heat stored in the ground source heat pump well 120 is supplied to the user required heat source end 140 through the heat pump 130. Taking the example that the heating equipment 142 needs heat, the circulation path of the medium at this time is: the ground source heat pump well 120 → the first three-way valve M1(2, 3 way, 1 off) → the second circulation pump P2 → the ground source heat pump 130 → the second three-way valve M2(5, 6 way, 4 off) → the ground source heat pump well 120, the ground source heat pump 130 → the third circulation pump P3 → the sixth electromagnetic valve K6 → the heating facility 142 → the seventh electromagnetic valve K7 → the ground source heat pump 130.
When the first temperature value is greater than or equal to the preset lower temperature limit and the third temperature value is greater than or equal to the required temperature value (i.e., the user required heat source end 140 does not need heat), the solar photovoltaic photo-thermal system is in the third working condition, as shown in fig. 6, at this time, the first electromagnetic valve K1 is in an open state, and the controller 150 starts the first circulating pump P1, so that the heat generated by the solar photovoltaic photo-thermal collector 110 is stored in the ground source heat pump well 120, i.e., the surplus heat generated by the solar photovoltaic photo-thermal collector 110 is stored in the ground source heat pump well 120 for use at any time or in different seasons. The circulation path of the medium at this time is: the solar photovoltaic photo-thermal collector 110 → the first temperature sensor T1 → the first solenoid valve K1 → the ground source heat pump well 120 → the first circulation pump P1 → the solar photovoltaic photo-thermal collector 110.
Further, in order to further improve the comprehensive utilization rate of energy, taking the user demand heat source end 140 including the hot water tank 141 and the heating device 142 as an example, refer to an operation principle diagram of another solar photovoltaic photo-thermal system shown in fig. 7, in the solar photovoltaic photo-thermal system, the first outlet 4 of the second three-way valve M2 is communicated with the inlet of the solar photovoltaic photo-thermal collector 110 through the first circulating pump P1; the outlet 2 of the first three-way valve M1 is also communicated with the inlet of the user demand heat source end 140 through a seventh pipe C7 (i.e. the outlet 2 of the first three-way valve M1 is communicated with the inlet of the heat exchange coil 1411 and the inlet of the heating heat exchanger 1421 through a seventh pipe C7, respectively); the fourth pipeline C4 is connected with the sixth pipeline C6 through a third three-way valve M3 and a fourth three-way valve M4, a first inlet 11, a second inlet 12 and an outlet 10 of the third three-way valve M3 are respectively communicated with a first outlet of the ground source heat pump 130, a second outlet 7 of the fourth three-way valve M4 and an inlet 5 of the second three-way valve M2, and an inlet 9 and a first outlet 8 of the fourth three-way valve M4 are respectively communicated with an outlet of the user heat demand source end 140 and a second inlet of the ground source heat pump 130; a second electromagnetic valve K2 is arranged on the seventh pipeline C7, and a third electromagnetic valve K3 is arranged on the pipeline between the second circulating pump P2 and the ground source heat pump 130; the third three-way valve M3, the fourth three-way valve M4, the second electromagnetic valve K2 and the third electromagnetic valve K3 are respectively connected with the controller 150; the controller 150 is also used to control the conduction states of the third three-way valve M3 and the fourth three-way valve M4, and the open-close states of the second solenoid valve K2 and the third solenoid valve K3. The solar photovoltaic photo-thermal system has a plurality of operating conditions, which are exemplarily described in detail below with reference to fig. 8 to 11.
When the difference between the first temperature value detected by the first temperature sensor T1 and the preset required temperature value is greater than or equal to a preset second difference value (i.e., the temperature of the medium detected by the first temperature sensor T1 is high and can be directly used for heating), and the third temperature value detected by the third temperature sensor T3 is less than the required temperature value (i.e., the heat source end 140 required by the user needs heat), the solar photovoltaic photo-thermal system is in a fourth operating condition, as shown in fig. 8, at this time, the first inlet 1 and the outlet 2 of the first three-way valve M1 are communicated, the second inlet 3 of the first three-way valve M1 is closed, the inlet 9 and the second outlet 7 of the fourth three-way valve M4 are communicated, the first outlet 8 of the fourth three-way valve M4 is closed, the second inlet 12 and the outlet 10 of the third three-way valve M3 are communicated, the first inlet 11 of the third three-way valve M3 is closed, the inlet 5 and the first outlet 4 of the second three-way valve M2 are communicated, the second outlet 6 of the second three-way valve M2 is closed, the first solenoid valve K1 and the third solenoid valve K3 are in a closed state, the second solenoid valve K2 is in an open state, and the controller 150 starts the first circulation pump P1, so that the heat generated by the solar photovoltaic photo-thermal collector 110 is directly supplied to the user heat demand source terminal 140. Taking the example that the hot water tank 141 needs heat, the circulation path of the medium at this time is: the solar photovoltaic photo-thermal collector 110 → the first temperature sensor T1 → the first three-way valve M1(1, 2-way, 3-way) → the second electromagnetic valve K2 → the fourth electromagnetic valve K4 → the hot-water tank 141 → the fifth electromagnetic valve K5 → the fourth three-way valve M4(7, 9-way, 8-way) → the third three-way valve M3(10, 12-way, 11-way) → the second three-way valve M2(4, 5-way, 6-way) → the first circulation pump P1 → the solar photovoltaic photo-thermal collector 110.
It should be noted that the second difference may be set according to actual requirements, and is not limited herein. For example, the second difference is 2 ℃.
When the first temperature value is greater than or equal to the preset lower temperature limit (i.e. the solar photovoltaic photo-thermal collector 110 meets the heat supply requirement), the difference between the first temperature value and the required temperature value is smaller than the second difference value (i.e. the temperature of the medium detected by the first temperature sensor T1 is low and cannot be directly used for heat supply), and the third temperature value is smaller than the required temperature value, the solar photovoltaic photo-thermal system is in the fifth operating condition, as shown in fig. 9, at this time, the first inlet 1 and the outlet 2 of the first three-way valve M1 are communicated, the second inlet 3 of the first three-way valve M1 is closed, the inlet 9 and the first outlet 8 of the fourth three-way valve M4 are communicated, the second outlet 7 of the fourth three-way valve M4 is closed, the first inlet 11 and the outlet 10 of the third three-way valve M3 are communicated, the second inlet 12 of the third three-way valve M3 is closed, the inlet 5 and the first outlet 4 of the second three-way valve M2 are communicated, the second outlet 6 of the second three-way valve M2 is closed, the first electromagnetic valve K1 and the second electromagnetic valve K2 are in a closed state, the third electromagnetic valve K3 is in an open state, and the controller 150 starts the first circulating pump P1, the second circulating pump P2 and the third circulating pump P3, so that the heat generated by the solar photovoltaic photo-thermal collector 110 is supplied to the user heat demand source end 140 through the ground source heat pump 130. Taking the example that the heating equipment 142 needs heat, the circulation path of the medium at this time is: the solar photovoltaic photo-thermal collector 110 → the first temperature sensor T1 → the first three-way valve M1(1, 2 way, 3 off) → the second circulation pump P2 → the third electromagnetic valve K3 → the ground source heat pump 130 → the third three-way valve M3(10, 11 way, 12 off) → the second three-way valve M2(4, 5 way, 6 off) → the first circulation pump P1 → the solar photovoltaic photo-thermal collector 110, the ground source heat pump 130 → the third circulation pump P3 → the sixth electromagnetic valve K6 → the heating equipment 142 → the seventh electromagnetic valve K7 → the fourth three-way valve M4(8, 9 way, 7 off) → the ground source heat pump 130.
When the first temperature value is greater than or equal to the preset lower temperature limit and the third temperature value is greater than or equal to the required temperature value (i.e., the user required heat source end 140 does not need heat), the solar photovoltaic photo-thermal system is in a sixth working condition, as shown in fig. 10, at this time, three ports of the first three-way valve M1, three ports of the second three-way valve M2, three ports of the third three-way valve M3, and three ports of the fourth three-way valve M4 are all closed, the first electromagnetic valve K1 is in an open state, the second electromagnetic valve K2 and the third electromagnetic valve K3 are in a closed state, and the controller 150 starts the first circulating pump P1, so that heat generated by the solar photovoltaic photo-thermal collector 110 is stored in the ground source heat pump well 120. The circulation path of the medium at this time is: the solar photovoltaic photo-thermal collector 110 → the first temperature sensor T1 → the first solenoid valve K1 → the ground source heat pump well 120 → the first circulation pump P1 → the solar photovoltaic photo-thermal collector 110.
When the first temperature value is lower than the preset lower temperature limit (i.e. the solar photovoltaic photo-thermal collector 110 does not satisfy the demand for heat supply), and the third temperature value is lower than the demand temperature value, the solar photovoltaic photo-thermal system is in the seventh operating condition, as shown in fig. 11, at this time, the second inlet 3 and the outlet 2 of the first three-way valve M1 are conducted, the first inlet 1 of the first three-way valve M1 is closed, the inlet 9 and the first outlet 8 of the fourth three-way valve M4 are conducted, the second outlet 7 of the fourth three-way valve M4 is closed, the first inlet 11 and the outlet 10 of the third three-way valve M3 are conducted, the second inlet 12 of the third three-way valve M3 is closed, the inlet 5 and the second outlet 6 of the second three-way valve M2 are conducted, the first outlet 4 of the second three-way valve M2 is closed, the first electromagnetic valve K1 and the second electromagnetic valve K2 are in the closed state, the third electromagnetic valve K3 is in the open state, the controller 150 starts the second circulating pump P2 and the third circulating pump P3, so that the heat stored in the geothermal pump well 120 is supplied to the user demand heat source end 140 via the geothermal pump 130. Taking the example that the hot water tank 141 needs heat, the circulation path of the medium at this time is: the ground source heat pump well 120 → the first three-way valve M1(2, 3 way, 1 off) → the second circulation pump P2 → the third electromagnetic valve K3 → the ground source heat pump 130 → the third three-way valve M3(10, 11 way, 12 off) → the second three-way valve M2(5, 6 way, 4 off) → the ground source heat pump well 120, the ground source heat pump 130 → the third circulation pump P3 → the fourth electromagnetic valve K4 → the hot water tank 141 → the fifth electromagnetic valve K5 → the fourth three-way valve M4(8, 9 way, 7 off) → the ground source heat pump 130.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In addition, in the description of the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (10)
1. A solar photovoltaic photo-thermal system, comprising: the system comprises a solar photovoltaic photo-thermal collector, a ground source heat pump well, a ground source heat pump, a user heat demand source end and a controller;
an outlet of the solar photovoltaic photo-thermal collector is communicated with a first inlet of the ground source heat pump well through a first pipeline, and an inlet of the solar photovoltaic photo-thermal collector is communicated with a first outlet of the ground source heat pump well through a second pipeline; the second outlet of the ground source heat pump well is communicated with the first inlet of the ground source heat pump through a third pipeline, and the second inlet of the ground source heat pump well is communicated with the first outlet of the ground source heat pump through a fourth pipeline; a second outlet of the ground source heat pump is communicated with an inlet of the user heat demand source end through a fifth pipeline, and a second inlet of the ground source heat pump is communicated with an outlet of the user heat demand source end through a sixth pipeline;
a first temperature sensor is arranged on the first pipeline, a first circulating pump is arranged on the second pipeline, a second circulating pump is arranged on the third pipeline, a third circulating pump is arranged on the fifth pipeline, a second temperature sensor is arranged in the ground source heat pump well, and a third temperature sensor is arranged in the user heat demand source end;
the first temperature sensor, the second temperature sensor, the third temperature sensor, the first circulating pump, the second circulating pump and the third circulating pump are respectively connected with the controller; the controller is used for respectively acquiring temperature data detected by the first temperature sensor, the second temperature sensor and the third temperature sensor and controlling the start and stop of the first circulating pump, the second circulating pump and the third circulating pump.
2. The solar photovoltaic photo-thermal system according to claim 1, wherein when a difference between a first temperature value detected by the first temperature sensor and a second temperature value detected by the second temperature sensor is greater than or equal to a preset first difference value, the first circulation pump is started to store heat generated by the solar photovoltaic photo-thermal collector into the ground source heat pump well;
and when a third temperature value detected by the third temperature sensor is smaller than a preset required temperature value, starting the second circulating pump and the third circulating pump so that the ground source heat pump extracts heat from the ground source heat pump well and supplies the heat to the user required heat source end.
3. The solar photovoltaic photo-thermal system according to claim 1, wherein a first three-way valve is connected to the third pipeline, and a first inlet, a second inlet and an outlet of the first three-way valve are respectively communicated with an outlet of the solar photovoltaic photo-thermal collector, a second outlet of the ground source heat pump well and the second circulating pump; a second three-way valve is connected to the fourth pipeline, and an inlet, a first outlet and a second outlet of the second three-way valve are respectively communicated with the first outlet of the ground source heat pump, the inlet of the solar photovoltaic photo-thermal collector and the second inlet of the ground source heat pump well; a first electromagnetic valve is arranged on the first pipeline;
the first three-way valve, the second three-way valve and the first electromagnetic valve are respectively connected with the controller, and the controller is further used for controlling the conduction state of the first three-way valve and the second three-way valve and the opening and closing state of the first electromagnetic valve.
4. The solar photovoltaic photo-thermal system according to claim 3, wherein when the first temperature value detected by the first temperature sensor is greater than or equal to a preset lower temperature limit and the third temperature value detected by the third temperature sensor is less than a preset required temperature value, the first inlet and the outlet of the first three-way valve are communicated, the second inlet of the first three-way valve is closed, the inlet and the first outlet of the second three-way valve are communicated, the second outlet of the second three-way valve is closed, the first electromagnetic valve is in a closed state, and the second circulating pump and the third circulating pump are started, so that the heat generated by the solar photovoltaic photo-thermal collector is supplied to the user required heat source end through the ground source heat pump;
when the first temperature value is smaller than the preset temperature lower limit and the third temperature value is smaller than the required temperature value, a second inlet and an outlet of the first three-way valve are communicated, a first inlet of the first three-way valve is closed, an inlet and a second outlet of the second three-way valve are communicated, a first outlet of the second three-way valve is closed, the first electromagnetic valve is in a closed state, and the second circulating pump and the third circulating pump are started, so that heat stored in the ground source heat pump well is supplied to the user required heat source end through the ground source heat pump;
when the first temperature value is greater than or equal to the preset lower temperature limit and the third temperature value is greater than or equal to the required temperature value, the first electromagnetic valve is in an open state, and the first circulating pump is started, so that heat generated by the solar photovoltaic photo-thermal collector is stored in the ground source heat pump well.
5. The solar photovoltaic photo-thermal system according to claim 3, wherein the first outlet of the second three-way valve is communicated with the inlet of the solar photovoltaic photo-thermal collector through the first circulation pump; the outlet of the first three-way valve is also communicated with the inlet of the user demand heat source end through a seventh pipeline; the fourth pipeline is connected with the sixth pipeline through a third three-way valve and a fourth three-way valve, a first inlet, a second inlet and an outlet of the third three-way valve are respectively communicated with a first outlet of the ground source heat pump, a second outlet of the fourth three-way valve and an inlet of the second three-way valve, and an inlet and a first outlet of the fourth three-way valve are respectively communicated with an outlet of the user heat demand source end and a second inlet of the ground source heat pump; a second electromagnetic valve is arranged on the seventh pipeline, and a third electromagnetic valve is arranged on the pipeline between the second circulating pump and the ground source heat pump;
the third three-way valve, the fourth three-way valve, the second electromagnetic valve and the third electromagnetic valve are respectively connected with the controller; the controller is also configured to control a conduction state of the third three-way valve and the fourth three-way valve, and an open/close state of the second solenoid valve and the third solenoid valve.
6. The solar photovoltaic photo-thermal system according to claim 5, wherein when a difference between a first temperature value detected by the first temperature sensor and a preset required temperature value is greater than or equal to a preset second difference value, and a third temperature value detected by the third temperature sensor is less than the required temperature value, the first inlet and the outlet of the first three-way valve are connected, the second inlet of the first three-way valve is closed, the inlet and the second outlet of the fourth three-way valve are connected, the first outlet of the fourth three-way valve is closed, the second inlet and the outlet of the third three-way valve are connected, the first inlet of the third three-way valve is closed, the inlet and the first outlet of the second three-way valve are connected, the second outlet of the second three-way valve is closed, the first solenoid valve and the third solenoid valve are in a closed state, and the second solenoid valve is in an open state, the first circulating pump is started, so that the heat generated by the solar photovoltaic photo-thermal collector is supplied to the user demand heat source end.
7. The solar photovoltaic photo-thermal system according to any one of claims 1-6, wherein said customer demand heat source end is one or more.
8. The solar photovoltaic photo-thermal system according to claim 7, wherein said user-demanded heat source end comprises a hot water tank and a heating facility; and a second outlet of the ground source heat pump is respectively communicated with an inlet of the heat exchange coil of the hot water tank and an inlet of a heating heat exchanger of the heating equipment through the fifth pipeline, and a second inlet of the ground source heat pump is respectively communicated with an outlet of the heat exchange coil and an outlet of the heating heat exchanger through the sixth pipeline.
9. The solar photovoltaic photo-thermal system according to any one of claims 1 to 6, wherein the solar photovoltaic photo-thermal collector comprises a solar photovoltaic photo-thermal plate and a tube plate structure disposed on the back of the solar photovoltaic photo-thermal plate, and heat generated by the solar photovoltaic photo-thermal plate is transferred into the medium of the first pipeline through the tube plate structure.
10. The solar photovoltaic photo-thermal system according to claim 9, further comprising a photovoltaic inverter connected to said solar photovoltaic hotplate.
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Denomination of utility model: Solar photovoltaic thermal system Effective date of registration: 20231114 Granted publication date: 20220920 Pledgee: Shizhong Branch of Qilu Bank Co.,Ltd. Pledgor: JINAN JINJIU SOLAR ENERGY EQUIPMENT CO.,LTD. Registration number: Y2023980065627 |