CN220038797U - Solar photovoltaic photo-thermal and green hydrogen building application triple co-generation system - Google Patents

Abstract

The utility model provides a solar photovoltaic photo-thermal and green hydrogen building application triple supply system, which comprises: the PV/T heat collection device is provided with a photovoltaic module and a heat collection module which are integrated into a whole; the photo-thermal subsystem comprises a hot water collecting unit connected with the heat collecting assembly through a heat collecting pipeline, a hot water supply assembly connected with the water outlet end of the hot water collecting unit, and hot water equipment connected with the water outlet end of the hot water supply assembly; the photovoltaic subsystem comprises an inversion module electrically connected with the photovoltaic module and electric equipment connected with the downstream of the inversion module through a power supply line; the hydrogen production subsystem comprises hydrogen production equipment electrically connected with the photovoltaic assembly and hydrogen utilization equipment connected downstream of the hydrogen production equipment. The solar photovoltaic photo-thermal and green hydrogen building application triple supply system provided by the utility model can realize comprehensive application of hot water, power supply, hydrogen production and the like in a building, and solves the problems of difficult energy storage, low utilization rate and difficult hydrogen storage and use in the solar energy utilization process.

Description

Solar photovoltaic photo-thermal and green hydrogen building application triple co-generation system

Technical Field

The utility model relates to the technical field of solar energy utilization, in particular to a solar photovoltaic photo-thermal and green hydrogen building application triple supply system.

Background

At present, PV/T (Solar photovoltaic/thermal) technology has been widely used in civil buildings, mainly for providing solar hot water and photovoltaic power, and can improve solar energy conversion efficiency and utilization rate compared with a single solar hot water system or a solar photovoltaic system.

However, the existing energy supply system based on the PV/T technology still has the problems of difficult electric energy storage, low electric energy and heat energy utilization rate and high electric energy and energy storage cost when being applied to vast buildings in rural areas or remote mountain areas, especially civil buildings.

In addition, the current electrolytic water hydrogen production technology is mature, but the hydrogen energy is stored and transported, so that the hydrogen production amount is small for the distributed hydrogen production, and the economic and safety problems exist in the centralized storage and transportation.

Therefore, the above prior art has at least the following technical problems: the energy supply system based on the PV/T technology in the prior art is difficult to store electric energy, low in electric energy and heat energy utilization rate and high in electric energy storage cost when applied to buildings in rural areas or remote mountain areas; meanwhile, the hydrogen production amount of the electrolytic water hydrogen production is small, and the hydrogen storage and the hydrogen utilization are difficult.

Disclosure of Invention

The embodiment of the utility model solves the technical problems of difficult energy storage, low utilization rate and difficult hydrogen storage and use in the solar energy utilization process in the prior art by providing the solar photovoltaic photo-thermal and green hydrogen building application triple supply system.

In order to solve the technical problems, an embodiment of the present utility model provides a solar photovoltaic photo-thermal and green hydrogen building application triple co-generation system, including:

the PV/T heat collection device is provided with a photovoltaic module and a heat collection module which are integrated into a whole, wherein the photovoltaic module is used for converting solar energy into electric energy, and the heat collection module is used for converting the solar energy into heat energy;

the photo-thermal subsystem comprises a hot water collecting unit connected with the heat collecting assembly through a heat collecting pipeline, a hot water supply assembly connected with the water outlet end of the hot water collecting unit, and hot water equipment connected with the water outlet end of the hot water supply assembly in a building, so that hot water is prepared by utilizing heat energy converted by solar energy and is supplied to the building;

the photovoltaic subsystem comprises an inversion module electrically connected with the photovoltaic module and electric equipment in a building which is connected with the downstream of the inversion module through a power supply line, so that electric energy converted by solar energy is utilized to supply power for the building;

the hydrogen production subsystem comprises hydrogen production equipment electrically connected with the photovoltaic assembly and hydrogen utilization equipment connected in a building at the downstream of the hydrogen production equipment, so that hydrogen is produced by utilizing electric energy converted from solar energy and is supplied to the building.

Further, the heat collecting pipeline comprises a first sub-pipeline connected with the water outlet of the heat collecting component and the water inlet end of the hot water collecting unit, and a second sub-pipeline connected with the water outlet end of the hot water collecting unit and the water inlet of the heat collecting component, and a first pumping unit is arranged on the second sub-pipeline and used for pumping water of the hot water collecting unit back flow into the heat collecting component.

Further, the hot water supply assembly comprises a hot water tank connected with the water supply end of the hot water collecting unit and a heating mechanism arranged on the hot water tank, wherein the heating mechanism is used for heating water in the hot water tank, and the hot water equipment is connected with the water supply end of the hot water tank.

Further, a second pumping unit is arranged between the hot water collecting unit and the hot water tank, and the second pumping unit is used for pumping water in the hot water collecting unit to the hot water tank.

Further, the hot water tank is connected with the hot water equipment through a heat supply pipeline, and a third pumping unit is connected to the heat supply pipeline and used for pumping water in the hot water tank to the hot water equipment.

Further, the inverter module is integrated into a power grid through a grid connection line, and the grid connection line and the power supply line are arranged in parallel.

Further, the hydrogen production equipment comprises an electrolytic water hydrogen production device connected with the photovoltaic assembly through a first photovoltaic circuit; and/or the hydrogen-using device comprises a cooker using natural gas as fuel, and the hydrogen produced by the hydrogen-using device is conveyed to the hydrogen-using device and mixed into the natural gas to jointly serve as the fuel of the cooker.

Further, the hydrogen production equipment comprises a hydrogen storage unit connected with the electrolytic water hydrogen production device through a hydrogen transmission pipeline; the electrolytic water hydrogen production device and/or the hydrogen storage unit are/is connected with the hydrogen utilization equipment through a hydrogen supply pipeline.

Further, a control subsystem is included that is capable of controlling the operating states of the PV/T heat collection device, the photo-thermal subsystem, the photovoltaic subsystem, and the hydrogen production subsystem.

Further, the control subsystem is provided with an acquisition module which can acquire the running states of the PV/T heat collecting device, the photo-thermal subsystem, the photovoltaic subsystem and the hydrogen production subsystem.

One or more technical solutions provided in the embodiments of the present utility model at least have the following technical effects or advantages:

(1) The PV/T heat collection device, the photo-thermal subsystem, the photovoltaic subsystem and the hydrogen production subsystem are matched for use, so that comprehensive application of hot water, power supply, hydrogen production and the like in a building can be realized, a triple supply mode is realized, solar energy conversion efficiency and utilization rate are improved, the problems of difficult energy storage, low utilization rate and difficult hydrogen storage and hydrogen utilization in the solar energy utilization process are solved, the application range of solar photovoltaic photo-thermal in rural areas or remote areas is expanded, meanwhile, the hot water collection unit and the hot water supply assembly are matched for arrangement, the collection and supply separation use modes of the solar water heating system can be realized, and the storage and the on-demand use of hot water are facilitated, so that the solar water heating system has a good use effect.

(2) The cooperation of first sub-pipeline and second sub-pipeline does benefit to and forms circulation loop between heat collecting component and hot water collection unit for can flow back to heat collecting component again when hot water collection unit's water temperature is lower and heat, and then can avoid using other firing equipment, in order to do benefit to energy saving and emission reduction, and the setting of first pumping unit does benefit to hot water collection unit's water and flows back smoothly to heat collecting component in.

(3) The hot water supply assembly adopts the hot water tank and the heating mechanism, can heat water in the hot water tank, avoids the defect of insufficient water temperature supplied to the hot water equipment, influences the use effect of the combined application of the photo-thermal subsystem and the building, and has the advantages of simple structure, low cost and easiness in manufacturing.

(4) The second pumping unit is arranged, so that the water can be pressurized, the water in the hot water collecting unit can be smoothly pumped to the hot water tank, the purpose of long-distance pumping can be achieved, and the arrangement requirements of different distances of the hot water tank can be met.

(5) The arrangement of the heating pipeline and the third pumping unit is beneficial to meeting the long-distance conveying purpose of the hot water tank and the hot water equipment and ensuring the smooth conveying of water between the hot water tank and the hot water equipment.

(6) The inversion module is connected with a power grid through a grid connection line, and can directly connect the electric energy converted by the photovoltaic module with the power grid for supplying power, so that the electric energy utilization rate, namely the solar energy utilization rate, is improved.

(7) The hydrogen production device by adopting the electrolytic water has the advantages of cleanness, environmental protection, high energy utilization rate, good hydrogen production flexibility, high safety and the like.

(8) The hydrogen supply pipeline is beneficial to realizing the purpose of hydrogen storage, and the hydrogen produced by the hydrogen production equipment is doped into natural gas to be used as fuel together, so that the green hydrogen dispersion type application mode of hydrogen storage and hydrogen combination can be realized, the application scheme of hydrogen doping of building natural gas is also realized, and the problems of hydrogen storage, transportation and application in the building are solved. Meanwhile, the emission of carbon dioxide can be effectively reduced, and the influence on the environment is reduced. In addition, the hydrogen is doped to improve the combustion temperature and the combustion speed, thereby improving the energy utilization efficiency.

(9) Through setting up control subsystem, can control the running state of PV/T heat collection device, photo-thermal subsystem, photovoltaic subsystem and hydrogen manufacturing subsystem, and then do benefit to the realization solar energy and supply power, supply hot water and the random switching between the three kinds of application modes of hydrogen manufacturing in the building, promote solar energy utilization ratio.

(10) And the acquisition module is used for acquiring the running states of the PV/T heat collection device, the photo-thermal subsystem, the photovoltaic subsystem and the hydrogen production subsystem, so that the intelligent control aim of the control subsystem is fulfilled.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a solar photovoltaic photo-thermal and green hydrogen building application triple co-generation system in an embodiment of the utility model;

FIG. 2 is a schematic diagram of a photo-thermal subsystem according to an embodiment of the present utility model;

FIG. 3 is a schematic diagram of a photovoltaic subsystem according to an embodiment of the present utility model;

FIG. 4 is a schematic diagram of a hydrogen production subsystem in an embodiment of the utility model.

Reference numerals illustrate:

1. PV/T heat collection device; 11. a photovoltaic module; 12. a heat collecting assembly;

2. a photo-thermal subsystem; 21. a hot water collecting unit; 22. a hot water tank; 23. a heating mechanism; 24. a first sub-line; 25. a second sub-line; 26. a first pumping unit; 27. a second pumping unit; 28. a third pumping unit; 29. a heating pipeline;

3. a photovoltaic subsystem; 31. an inversion module; 32. a power supply line; 33. a first photovoltaic circuit; 34. a second photovoltaic circuit;

4. a hydrogen production subsystem; 41. a hydrogen production device by water electrolysis; 42. a hydrogen delivery pipeline; 43. a hydrogen storage unit; 44. a hydrogen supply pipeline.

Detailed Description

The embodiment of the utility model solves the technical problems that the energy supply system in the prior art is difficult to store electric energy, the utilization rate of electric energy and heat energy is low, the storage cost of electric energy and energy is high, and meanwhile, the hydrogen production amount by water electrolysis and hydrogen production is small and the hydrogen storage and use are difficult when the energy supply system is applied to a building (particularly a civil building in a rural area or a remote mountain area).

The technical scheme in the embodiment of the utility model aims to solve the technical problems, and the overall thought is as follows:

the PV/T heat collection device 1, the photo-thermal subsystem 2, the photovoltaic subsystem 3 and the hydrogen production subsystem 4 are matched for use, so that collection, storage and supply after solar energy is converted into hot water (heat energy) can be realized, application in power supply and hydrogen production after solar energy is converted into electric energy can be realized, namely, combined storage and supply of hot water, power supply, hydrogen production and the like in a building are realized, a triple supply mode is realized, further, the conversion efficiency and the utilization rate of solar energy are improved, the problems of difficult energy storage, low utilization rate and difficult hydrogen storage and hydrogen utilization in the solar energy utilization process are solved, the application range of solar photovoltaic photo-thermal is expanded, and particularly, application in civil buildings in rural areas and remote areas is expanded, wherein the hot water collection unit 21 and the hot water supply assembly are matched for use, the collection and the supply of the solar hot water system are realized, the hot water storage and the use mode for separation are realized, the hot water storage and the use as required are realized, the good use effect is realized, and the problems of difficult energy storage, the difficulty in hydrogen storage, the civil energy storage and the hydrogen production and the hydrogen storage in the rural area and the building in the rural areas are solved, and the hydrogen storage and the hydrogen production cost is low.

In order to better understand the above technical solutions, the following detailed description will refer to the accompanying drawings and specific embodiments.

According to one or more embodiments of the utility model, a solar photovoltaic photo-thermal and green hydrogen building application triple supply system is provided, the energy storage problem in solar energy utilization is solved, the comprehensive application of solar photovoltaic and photo-thermal technology in rural or remote mountain civil buildings is promoted, the solar energy utilization efficiency is improved by more than 20%, the combined storage and supply of hot water, power supply, hydrogen production and the like of the building are realized in the use process, the solar energy conversion efficiency and utilization rate are improved, and the application range of solar photovoltaic photo-thermal in rural and remote areas can be further expanded.

As shown in fig. 1, the solar photovoltaic photo-thermal and green hydrogen building application triple co-generation system according to the embodiment of the utility model comprises a PV/T heat collection device 1, a photo-thermal subsystem 2, a photovoltaic subsystem 3 and a hydrogen production subsystem 4, wherein:

the PV/T heat collector 1 has an integrated photovoltaic module 11 and a heat collector module 12, wherein the photovoltaic module 11 is used for converting solar energy into electric energy and the heat collector module 12 is used for converting solar energy into heat energy.

The photo-thermal subsystem 2 comprises a hot water collecting unit 21 connected with the heat collecting assembly 12 through a heat collecting pipeline, a hot water supply assembly connected with the water outlet end of the hot water collecting unit 21, and hot water equipment connected with the water outlet end of the hot water supply assembly in a building, so that hot water is prepared by utilizing heat energy converted by solar energy and is supplied to the building.

The photovoltaic subsystem 3 comprises an inverter module 31 electrically connected with the photovoltaic module 11 and electric equipment (i.e. electric facilities) in a building which is connected with the downstream of the inverter module 31 through a power supply line 32, so as to supply power for the building by utilizing electric energy converted from solar energy.

The hydrogen production subsystem 4 comprises hydrogen production equipment electrically connected with the photovoltaic module 11 and hydrogen utilization equipment connected in a building downstream of the hydrogen production equipment, so as to produce hydrogen by utilizing electric energy converted by solar energy and supply the hydrogen to the building.

It should be noted that in the embodiments of the present utility model, the inverter module 31 may be a common inverter, and the PV/T heat collecting device 1 may refer to a PV/T heat collector known to those skilled in the art, so as to facilitate the combination of the photovoltaic module 11 and the heat collecting module 12, and achieve a high solar energy utilization.

Based on the above overall description, in this embodiment, as an exemplary structure, as shown in fig. 2, the heat collecting pipe includes a first sub-pipe 24 connecting the water outlet of the heat collecting assembly 12 and the water inlet of the hot water collecting unit 21, and a second sub-pipe 25 connecting the water outlet of the hot water collecting unit 21 and the water inlet of the heat collecting assembly 12, and a first pumping unit 26 is disposed on the second sub-pipe 25, and the first pumping unit 26 is used for pumping the water of the hot water collecting unit 21 back into the heat collecting assembly 12 for reheating.

It will be appreciated that, by the cooperation of the first sub-pipeline 24 and the second sub-pipeline 25, a circulation loop is formed between the heat collecting assembly 12 and the hot water collecting unit 21, so that the water of the hot water collecting unit 21 can flow back into the heat collecting assembly 12 again for reheating when the temperature of the water is low, solar energy in the heat collecting assembly 12 is fully utilized, energy saving and emission reduction are facilitated, and meanwhile, the arrangement of the first pumping unit 26 facilitates that the water of the hot water collecting unit 21 has enough water pressure to flow back into the heat collecting assembly 12.

Specifically, in the embodiment of the present utility model, the first pumping unit 26 is a common water pump, the hot water collecting unit 21 is preferably a water tank capable of collecting hot water, and it should be noted that the water tank and/or the heat collecting assembly 12 is also connected to a water supply source to supply cold water or normal temperature water to the entire photo-thermal subsystem 2, so as to ensure normal use of the entire photo-thermal subsystem 2.

In some embodiments, the hot water supply assembly includes a hot water tank 22 connected to a water supply end of the hot water collecting unit 21, and a heating mechanism 23 provided on the hot water tank 22, the heating mechanism 23 for heating water in the hot water tank 22, and a hot water apparatus connected to the water supply end of the hot water tank 22.

Here, the hot water supply assembly adopts the hot water tank 22 and the heating mechanism 23, can carry out the secondary heating to the water in the hot water tank 22 to prevent to influence the result of use that photo-thermal subsystem 2 and building jointly used because of supplying to the temperature of hot water equipment is not enough, and have simple structure, low cost and easy advantage of making.

Specifically, as a preferred embodiment, a second pumping unit 27 is provided between the hot water collecting unit 21 and the hot water tank 22, and the second pumping unit 27 is used to pump water in the hot water collecting unit 21 into the hot water tank 22.

The second pumping unit 27 can boost the pressure of water, is favorable for pumping the water in the hot water collecting unit 21 to the hot water tank 22 smoothly, can realize long-distance water supply, and meets the arrangement requirements of the hot water tank 22 at different distances.

Also as a preferred embodiment, the hot water tank 22 and the hot water apparatus are connected by a heating line 29, and a third pumping unit 28 is connected to the heating line 29, and the third pumping unit 28 is used to pump water in the hot water tank 22 to the hot water apparatus.

By arranging the heating pipeline 29 and the third pumping unit 28, the long-distance conveying purpose of the hot water tank 22 and the hot water equipment is favorably met, and smooth conveying of water between the hot water tank and the hot water equipment is ensured.

Of course, as understood, the cooperation of the second pumping unit 27 and the third pumping unit 28 can exert a pressurizing effect when delivering water, so that the distances among the hot water collecting unit 21, the hot water tank 22 and the hot water apparatus can be set according to the need.

In particular, the water heating device may be a residential domestic water heating device within a building, such as a water heating appliance.

In some embodiments, as shown in fig. 3, the inverter module 31 is incorporated into the power grid through a grid-tie line, and the grid-tie line is disposed in parallel with the power supply line 32.

So set up, can directly incorporate the electric energy after photovoltaic module 11 conversion into the electric wire netting power supply to can cooperate with power supply line 32 and consumer, and then improve the electric energy utilization, also solar energy utilization.

Of course, in the embodiment of the utility model, the electric equipment can be electric equipment related to household electricity, such as electric lamps and televisions.

Furthermore, in some embodiments, referring to FIG. 4, the hydrogen plant includes an electrolyzed water hydrogen plant 41 coupled to the photovoltaic module 11 via a first photovoltaic circuit 33. The electrolytic water hydrogen production device 41 has the advantages of cleanness, environmental protection, high energy utilization rate, good hydrogen production flexibility, high safety and the like.

Meanwhile, the hydrogen-using device includes a cooker using natural gas as a fuel, and hydrogen gas produced by the hydrogen-producing device is supplied to the hydrogen-using device and mixed into the natural gas to be used together as a fuel for the cooker.

Specifically, the hydrogen is added into the gas for the cooker, so that the carbon dioxide emission can be effectively reduced, and the influence on the environment is reduced. In addition, the hydrogen is doped to improve the combustion temperature and the combustion speed, thereby improving the energy utilization efficiency.

And it is worth mentioning that green hydrogen refers to hydrogen obtained by decomposing water by using renewable energy sources (electric energy converted by solar energy in the utility model), only water is generated during combustion, and zero emission of carbon dioxide is realized from the source, so that the green hydrogen is a pure green new energy source.

Therefore, the hydrogen prepared by the hydrogen production equipment is doped into the natural gas to be used as fuel together, so that a green hydrogen dispersion type application mode combining hydrogen storage and hydrogen utilization can be realized, an application scheme of building natural gas hydrogen doping is also realized, and the problems of hydrogen storage, transportation and application in the building are solved.

In a specific structure, the hydrogen production equipment comprises a hydrogen storage unit 43 connected with the electrolytic water hydrogen production device 41 through a hydrogen transmission pipeline 42, and the electrolytic water hydrogen production device 41 or the hydrogen storage unit 43 is connected with the hydrogen utilization equipment through a hydrogen supply pipeline 44.

It can be appreciated that the arrangement of the hydrogen delivery line 42 and the storage unit is advantageous for achieving the purpose of storing hydrogen, and the arrangement of the hydrogen supply line 44 is advantageous for achieving the transportation of hydrogen, and such an arrangement also has the advantages of simple structure and easy arrangement.

Moreover, in the embodiment of the present utility model, specifically, the hydrogen storage unit 43 may employ a hydrogen storage device known to those skilled in the art, such as a hydrogen storage tank.

In addition, referring still to fig. 1, in some embodiments, the solar photovoltaic photo-thermal and green hydrogen building applications triple co-generation system of the present utility model includes a control subsystem capable of controlling the operating states of PV/T heat collection device 1, photo-thermal subsystem 2, photovoltaic subsystem 3, and hydrogen production subsystem 4.

Through setting up control subsystem, can control the running state of PV/T heat collection device 1, photo-thermal subsystem 2, photovoltaic subsystem 3 and hydrogen manufacturing subsystem 4, and then do benefit to the realization solar energy and supply power, supply hot water and the random switching between the three kinds of application modes of hydrogen manufacturing in the building, promote solar energy utilization ratio.

And, as a preferred modification, the control subsystem has an acquisition module therein capable of acquiring the operating states of the PV/T heat collector 1, the photo-thermal subsystem 2, the photovoltaic subsystem 3 and the hydrogen production subsystem 4.

Therefore, the operation states of the PV/T heat collection device 1, the photo-thermal subsystem 2, the photovoltaic subsystem 3 and the hydrogen production subsystem 4 can be collected by utilizing the collection module, and the intelligent control purpose of the control subsystem can be realized.

It should be mentioned that, as a preferred embodiment, the control subsystem may control the operation states of the PV/T heat collection device 1, the photo-thermal subsystem 2, the photovoltaic subsystem 3 and the hydrogen production subsystem 4 by the cooperation of the controller and the collection module.

In a development, the collecting module may include temperature sensors for collecting temperature signals of the first sub-pipeline 24, the second sub-pipeline 25 and the hot water tank 22, flow sensors for collecting gas flow signals of the hydrogen conveying pipeline 42 and the hydrogen supplying pipeline 44, pressure sensors for collecting pressure signals of the hydrogen storage unit 43, liquid level sensors for collecting liquid level signals in the hot water collecting unit 21 and the hot water tank 22, and the like;

meanwhile, the controller may be connected to the pumping units such as the first pumping unit 26, the second pumping unit 27 and the third pumping unit 28, and connect the grid-connected line, the power supply line 32 and each electric control switch on the first photovoltaic circuit 33, and connect the hydrogen transmission line 42 and the electric flow valve on the hydrogen supply line 44, and of course, if necessary, a second photovoltaic circuit 34 with electric control switch may be disposed between the photovoltaic module 11 and the inverter module 31, and the controller is also connected to the switch on the second photovoltaic circuit 34;

by the arrangement, the controller can control the operation states of the PV/T heat collection device 1, the photo-thermal subsystem 2, the photovoltaic subsystem 3 and the hydrogen production subsystem 4 based on the related information collected by the collection module, or the solar photovoltaic photo-thermal and green hydrogen building application triple supply system can freely switch and operate among the photo-thermal subsystem 2, the photovoltaic subsystem 3 and the hydrogen production subsystem 4 according to the requirements of hot water, power supply and hydrogen consumption of users in the building, so that the operation process and the control system design of the building comprehensive application triple supply system for producing hydrogen by photovoltaic, photo-thermal and electrolyzed water are realized, namely the intelligent control of the whole system.

The solar photovoltaic photo-thermal and green hydrogen building application triple supply system can realize three functions of solar photovoltaic power supply operation, solar photo-thermal hot water supply operation and solar photovoltaic electrolyzed water hydrogen supply operation. The solar photovoltaic power supply operation process comprises the following steps: the photovoltaic module 11 in the PV/T heat collection device 1 collects solar irradiation energy, converts the solar energy into electric energy, stabilizes the voltage through the inverter module 31 and outputs the voltage to power electric equipment in the building.

The solar photo-thermal hot water supply operation process comprises the following steps: the heat generated in the photovoltaic conversion process is transferred to the hot water through the heat collecting assembly 12 in the PV/T heat collecting device 1 and stored in the hot water collecting unit 21, and when the hot water produced by solar energy reaches the water supply temperature, the second pumping unit 27 is started through the controller to transfer the hot water into the hot water tank 22; if the hot water produced by solar energy does not reach the water supply temperature and the water quantity in the hot water tank 22 is insufficient, the control system also starts the second pumping unit 27 to transfer the hot water which does not reach the water supply temperature into the hot water tank 22 and auxiliary heat the water to the water supply temperature by starting the heating mechanism 23.

The operation process of preparing hydrogen by solar photovoltaic electrolyzed water comprises the following steps: the photovoltaic module 11 in the PV/T heat collection device 1 collects solar irradiation energy and converts the solar energy into electric energy, when no electricity consumption needs or the electricity consumption needs are smaller than the generated energy of the photovoltaic module 11 in the daytime, the system can supply power for power supply equipment through the inversion module 31 and simultaneously supply power for the electrolyzed water hydrogen production device 41 to prepare green hydrogen, but the direct current is usually adopted when the electrolyzed water is needed, and the current can be regulated through the voltage stabilizer if necessary.

In addition, the prepared green hydrogen can be stored in a special hydrogen storage unit 43 under the condition of no pipeline fuel gas (natural gas), and then provided for civil buildings or suitable users according to the needs, for example, the green hydrogen can be used in near combustion or can be used after centralized collection treatment; under the condition of pipeline fuel gas, green hydrogen can be mixed into the pipeline fuel gas nearby in proper quantity for use together with the fuel gas, and the mixing quantity needs to be controlled to ensure that the fuel gas burns normally, so that the fuel gas appliance can be used stably.

The three operation processes are integrated, and when the solar photovoltaic photo-thermal and green hydrogen building application triple supply system is practically applied, two operation modes are commonly used, namely a solar photovoltaic power supply and solar photo-thermal hot water supply mode and a solar photovoltaic electrolyzed water hydrogen production and solar photo-thermal hot water supply mode. In the two modes, electric energy and heat energy generated by solar energy photovoltaics are effectively utilized, the purpose of comprehensive application of power supply, hot water supply, hydrogen supply and the like in civil buildings is achieved, and the problems of solar energy storage are solved by utilizing grid-connected power supply, hot water storage, preparation, hydrogen energy storage and the like.

It will be understood that, although the terms "first," "second," etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another element. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, without departing from the scope of example embodiments.

The terms of orientation such as external, intermediate, internal, etc. mentioned or possible to be mentioned in this specification are defined with respect to the configurations shown in the drawings, which are relative concepts, and thus may be changed accordingly depending on the different positions and different states of use in which they are located. These and other directional terms should not be construed as limiting terms.

While the utility model has been described with respect to preferred embodiments thereof, it will be understood by those skilled in the art that various modifications and additions may be made without departing from the scope of the utility model. Equivalent embodiments of the present utility model will be apparent to those skilled in the art having the benefit of the teachings disclosed herein, when considered in the light of the foregoing disclosure, and without departing from the spirit and scope of the utility model; meanwhile, any equivalent changes, modifications and evolution of the above embodiments according to the essential technology of the present utility model still fall within the scope of the technical solution of the present utility model.

Claims (10)

1. Solar photovoltaic photo-thermal and green hydrogen building application trigeminy supplies system, characterized by comprising:

a PV/T collector (1) having an integrated photovoltaic module (11) and a collector module (12), wherein the photovoltaic module (11) is used for converting solar energy into electrical energy and the collector module (12) is used for converting solar energy into thermal energy;

the photo-thermal subsystem (2) comprises a hot water collecting unit (21) connected with the heat collecting assembly (12) through a heat collecting pipeline, a hot water supply assembly connected with the water outlet end of the hot water collecting unit (21), and hot water equipment connected with the water outlet end of the hot water supply assembly in a building, so that hot water is prepared by utilizing heat energy converted from solar energy and is supplied to the building;

the photovoltaic subsystem (3) comprises an inversion module (31) electrically connected with the photovoltaic module (11) and electric equipment in a building, which is connected with the downstream of the inversion module (31) through a power supply line (32), so as to supply power for the building by utilizing electric energy converted from solar energy;

and the hydrogen production subsystem (4) comprises hydrogen production equipment electrically connected with the photovoltaic assembly (11) and hydrogen utilization equipment connected in a building at the downstream of the hydrogen production equipment, so as to utilize electric energy converted by solar energy to produce hydrogen and supply the hydrogen to the building.

2. The solar photovoltaic photo-thermal and green hydrogen building application triple co-generation system according to claim 1, wherein the heat collecting pipeline comprises a first sub-pipeline (24) connecting a water outlet of the heat collecting assembly (12) and a water inlet end of the hot water collecting unit (21), and a second sub-pipeline (25) connecting a water outlet end of the hot water collecting unit (21) and a water inlet of the heat collecting assembly (12), and a first pumping unit (26) is arranged on the second sub-pipeline (25), wherein the first pumping unit (26) is used for pumping water reflux of the hot water collecting unit (21) into the heat collecting assembly (12).

3. The solar photovoltaic photo-thermal and green hydrogen building application triple co-generation system according to claim 1, wherein the hot water supply assembly comprises a hot water tank (22) connected with the water supply end of the hot water collecting unit (21), and a heating mechanism (23) arranged on the hot water tank (22), the heating mechanism (23) is used for heating water in the hot water tank (22), and the hot water heating device is connected with the water supply end of the hot water tank (22).

4. A solar photovoltaic photo-thermal and green hydrogen building application triple co-generation system according to claim 3, characterized in that a second pumping unit (27) is arranged between the hot water collecting unit (21) and the hot water tank (22), the second pumping unit (27) is used for pumping water in the hot water collecting unit (21) to the hot water tank (22).

5. A solar photovoltaic photo-thermal and green hydrogen building application triple co-generation system according to claim 3, characterized in that the hot water tank (22) and the hot water equipment are connected by a heating pipeline (29), and a third pumping unit (28) is connected to the heating pipeline (29), and the third pumping unit (28) is used for pumping water in the hot water tank (22) to the hot water equipment.

6. The solar photovoltaic photo-thermal and green hydrogen building application triple co-generation system according to claim 1, wherein the inverter module (31) is integrated into the grid through a grid-connected line, and the grid-connected line is arranged in parallel with the power supply line (32).

7. The solar photovoltaic photo-thermal and green hydrogen building application cogeneration system according to claim 1, wherein said hydrogen plant comprises an electrolyzed water hydrogen plant (41) connected to said photovoltaic module (11) by a first photovoltaic circuit (33); and/or the hydrogen-using device comprises a cooker using natural gas as fuel, and the hydrogen produced by the hydrogen-using device is conveyed to the hydrogen-using device and mixed into the natural gas to jointly serve as the fuel of the cooker.

8. The solar photovoltaic photo-thermal and green hydrogen building application triple co-generation system according to claim 7, characterized in that the hydrogen production plant comprises a hydrogen storage unit (43) connected to the electrolyzed water hydrogen production device (41) through a hydrogen delivery line (42); the electrolytic water hydrogen production device (41) and/or the hydrogen storage unit (43) are/is connected with the hydrogen utilization equipment through a hydrogen supply pipeline (44).

9. The solar photovoltaic photo-thermal and green hydrogen building applications triple co-generation system according to any of claims 1 to 8, comprising a control subsystem capable of controlling the operating states of the PV/T heat collection device (1), the photo-thermal subsystem (2), the photovoltaic subsystem (3) and the hydrogen production subsystem (4).

10. The solar photovoltaic photo-thermal and green hydrogen building application triple co-generation system according to claim 9, wherein the control subsystem is provided with a collection module capable of collecting the operation states of the PV/T heat collection device (1), the photo-thermal subsystem (2), the photovoltaic subsystem (3) and the hydrogen production subsystem (4).