Multi-source heat pump cooperative heat supply method and device for single building

Abstract

The invention discloses a multi-source heat pump cooperative heat supply method and device for a single building, relates to the technical field of heat supply, and can improve the stability and continuity of overall heat output of a heat supply device and reduce the energy consumption cost and operation cost of building heat supply. The method comprises the steps that the photo-thermal module is started to supply heat to the water tank, and the outdoor temperature is detected; when the outdoor temperature is higher than the first preset temperature, the air source heat pump is used for supplying heat; when the outdoor temperature is lower than or equal to the first preset temperature and higher than the second preset temperature, heat is supplied through the air source heat pump and the ground source heat pump; when the outdoor temperature is lower than or equal to a second preset temperature, low-temperature water in the water tank is subjected to heat exchange through the heat exchanger, medium-temperature water subjected to heat exchange enters the biomass boiler through the circulating water pump, and the biomass boiler generates electricity through the micro gas turbine to drive the ground source heat pump and heat the flowing-in medium-temperature water; and the heated high-temperature water is mixed with the low-temperature water in the water tank and flows into the heat supply pipeline to supply heat.

Description

Technical Field

[0001] This application relates to the field of heating technology, and in particular to a multi-source heat pump coordinated heating method and device for a single building. Background Technology

[0002] With the advancement of energy structure transformation and upgrading in northern my country and the increasing urgency of reducing air pollution, promoting clean energy heating has become an important development direction. Biomass energy, as a form of energy with "zero carbon emissions" throughout its life cycle, demonstrates high adaptability and broad prospects for biomass boilers using briquettes as a heat source in northern China. Meanwhile, heat pump heating systems, utilizing natural heat sources such as outdoor air and geothermal energy and achieving efficient heating with minimal electricity consumption, are also attracting increasing attention. In related technologies, traditional heating systems often rely on a single heat pump (such as an air-source heat pump), while biomass boilers are often operated independently to provide heat. However, the heating efficiency of a single heat pump (such as an air-source heat pump) drops significantly when the outdoor temperature is below -5°C, requiring reliance on high-energy-consuming electric auxiliary heating, leading to a sharp increase in operating costs. Furthermore, biomass boilers, when used alone, require continuous high-temperature combustion, resulting in high fuel consumption. Therefore, a multi-source heat pump synergistic heating method and heating device are urgently needed to reduce energy consumption. Summary of the Invention

[0003] In view of this, this application provides a multi-source heat pump synergistic heating method and device for a single building. The main purpose is to solve the problems that the heating efficiency of a single heat pump (such as an air source heat pump) drops significantly when the outdoor temperature is below -5°C, requiring reliance on high-energy-consuming electric auxiliary heating, which leads to a sharp increase in operating costs, while biomass boilers require continuous high-temperature combustion when used alone, resulting in high fuel consumption.

[0004] According to a first aspect of this application, a multi-source heat pump coordinated heating method for a single building is provided, the method comprising:

[0005] The solar thermal module is activated to replenish the water tank with heat and to detect the outdoor temperature.

[0006] When the outdoor temperature is higher than the first preset temperature, the low-temperature water in the water tank flows into the air source heat pump through the heat exchanger for heating, and the heated high-temperature water flows into the water tank through the confluencer. The high-temperature water in the water tank flows into the heating pipeline through the first valve for heating.

[0007] When the outdoor temperature is lower than or equal to the first preset temperature and higher than the second preset temperature, the low-temperature water in the water tank flows into the air source heat pump and the ground source heat pump through the heat exchanger for heating, and the heated high-temperature water flows into the water tank through the confluence valve, and the high-temperature water in the water tank flows into the heating pipeline through the first valve for heating.

[0008] When the outdoor temperature is lower than or equal to the second preset temperature, the low-temperature water in the water tank undergoes heat exchange through a heat exchanger. The medium-temperature water after heat exchange enters the biomass boiler through a circulating water pump. The biomass boiler generates electricity through a micro gas turbine to drive a ground source heat pump and heat the incoming medium-temperature water. The heated high-temperature water mixes with the low-temperature water in the water tank and flows into the heating pipeline for heating.

[0009] According to a second aspect of this application, a multi-source heat pump co-heating device for a single building is provided. The device includes: a solar thermal module, a heat pump heating module, a heat exchange module, and a biomass boiler heating module. The solar thermal module includes a PV / T component and a heat pump compressor. The heat pump heating module includes an air source heat pump, a ground source heat pump, and a water pump. The heat exchange module includes a water tank, a confluencer, and a heat exchanger. The biomass heating module includes a water pump, a biomass boiler, and a micro gas turbine.

[0010] By utilizing the above technical solution, this application provides a multi-source heat pump synergistic heating method and device for a single building. In this embodiment, a solar thermal module replenishes the water tank with heat, improving energy utilization. The multi-source synergistic working mode is dynamically adjusted according to the outdoor temperature. When the outdoor temperature is high, only the air-source heat pump is used for heating, fully leveraging its high energy efficiency and low cost. When the temperature drops below a first preset temperature, the air-source and ground-source heat pumps are activated for synergistic heating. Utilizing the high efficiency characteristics of the dual heat pumps in different temperature zones, the efficiency degradation of a single heat pump in low-temperature environments is avoided, achieving tiered energy utilization. When the temperature is below a second preset temperature, a biomass boiler and a micro gas turbine are introduced. Preheated medium-temperature water is supplied to the biomass boiler, significantly reducing its fuel consumption. Simultaneously, the micro gas turbine generates electricity to drive the ground-source heat pump, reducing the need for grid-connected electric auxiliary heating. In summary, the multi-heat-source collaborative operation mode allows the heat pump to bear the basic heat load, while the biomass boiler operates efficiently only during low-temperature periods. Combined with the heat supply from the solar thermal module, this significantly improves the stability and continuity of the overall heat output of the system, effectively reducing the energy consumption and operating costs of building heating.

[0011] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0012] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0013] Figure 1 This illustration shows a schematic diagram of a multi-source heat pump collaborative heating system architecture for a single building, provided in an embodiment of this application.

[0014] Figure 2 This paper illustrates a schematic diagram of a multi-source heat pump coordinated heating method for a single building according to an embodiment of this application.

[0015] Figure 3 This illustration shows another heating process provided by an embodiment of the present application;

[0016] Figure 4 This illustration shows another heating process provided by an embodiment of the present application. Detailed Implementation

[0017] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0018] Those skilled in the art will understand that, unless specifically stated otherwise, the singular forms “a,” “an,” “the,” and “the” used herein may also include the plural forms. It should be further understood that the word “comprising” as used in the specification of this application means the presence of the stated features, integers, steps, operations, elements, and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0019] It will be understood by those skilled in the art that, unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. It should also be understood that terms such as those defined in general dictionaries should be understood to have the same meaning as in the context of the prior art, and should not be interpreted in an idealized or overly formal sense unless specifically defined as herein.

[0020] Those skilled in the art will understand that the term "terminal" as used herein includes both devices that are wireless signal receivers, devices that are wireless signal receivers without transmitting capability, and devices with receiving and transmitting hardware, having receiving and transmitting hardware capable of performing bidirectional communication on a bidirectional communication link. Such devices may include: cellular or other communication devices having a single-line display, a multi-line display, or a cellular or other communication device without a multi-line display; PCS (Personal Communications Service) that can combine voice, data processing, fax, and / or data communication capabilities; PDA (Personal Digital Assistant) that may include a radio frequency receiver, pager, Internet / intranet access, web browser, notepad, calendar, and / or GPS (Global Positioning System) receiver; and conventional laptop and / or handheld computers or other devices that have and / or include a radio frequency receiver. As used herein, "terminal" can be portable, transportable, installed in a means of transportation (air, sea, and / or land), or suitable and / or configured to operate locally, and / or in a distributed manner, operating in any other location on Earth and / or in space. "Terminal" as used herein can also be a communication terminal, an internet access terminal, or a music / video playback terminal, such as a PDA, a MID (Mobile Internet Device), and / or a mobile phone with music / video playback capabilities, or a smart TV, set-top box, etc.

[0021] The multi-source heat pump co-heating method for single-building structures provided in this application is applicable to multi-source heat pump co-heating devices for single-building structures. It uses solar thermal modules to replenish heat to the water tank, improving energy utilization. The method dynamically adjusts the multi-source co-operation mode based on outdoor temperature. When outdoor temperatures are high, only the air-source heat pump is used for heating, fully leveraging its high energy efficiency and low cost. When the temperature drops below a first preset temperature, the air-source and ground-source heat pumps are activated for co-heating. Utilizing the high efficiency of dual heat pumps in different temperature zones avoids the efficiency degradation of a single heat pump in low-temperature environments, achieving tiered energy utilization. When the temperature is below a second preset temperature, a biomass boiler and a micro gas turbine are introduced. Preheated medium-temperature water is supplied to the biomass boiler, significantly reducing its fuel consumption. Simultaneously, the micro gas turbine generates electricity to drive the ground-source heat pump, reducing the need for grid-connected electric auxiliary heating. In summary, the multi-heat-source collaborative operation mode allows the heat pump to bear the basic heat load, while the biomass boiler operates efficiently only during low-temperature periods. Combined with the heat supply from the solar thermal module, this significantly improves the stability and continuity of the overall system's heat output, effectively reducing the energy consumption and operating costs of building heating. The heating device structure is as follows: Figure 1 As shown, it includes a solar thermal module, a heat pump heating module, a heat exchange module, and a biomass boiler heating module. The solar thermal module includes a PV / T component and a heat pump compressor; the heat pump heating module includes an air source heat pump, a ground source heat pump, and a water pump; the heat exchange module includes a water tank, a confluencer, and a heat exchanger; and the biomass heating module includes a water pump, a biomass boiler, and a micro gas turbine.

[0022] Specifically, such as Figure 1 As shown, the return water pipe is connected to the water tank, the supply water pipe is connected to the water tank via the first valve, the confluencer is connected to the water tank via the second valve, the heat exchanger is connected to the water tank, the heat exchanger is connected to the confluencer via the third valve, the heat exchanger is connected to the air source heat pump via a water pump, the heat exchanger is connected to the ground source heat pump via a water pump, the heat exchanger is connected to the biomass boiler via a circulating water pump, the PV / T module is connected to the heat pump compressor via the fourth valve, the heat pump compressor is connected to the water tank, the biomass boiler is connected to the micro gas turbine via the fifth valve, the micro gas turbine is connected to the ground source heat pump, and the biomass boiler is connected to the supply water pipe.

[0023] When the outdoor temperature is higher than the first preset temperature, the air source heat pump is activated, opening valves one, two, and four, while valves three and five are closed. When the outdoor temperature is lower than or equal to the first preset temperature but higher than the second preset temperature, the air source heat pump and ground source heat pump are activated, opening valves one, two, and four, while valves three and five are closed. When the outdoor temperature is lower than or equal to the second preset temperature, the air source heat pump, ground source heat pump, and biomass boiler are activated, opening valves one, three, four, and five, while valve two is closed. The system shares the same water pump and piping, switching heat sources via valves to reduce redundant equipment.

[0024] This application provides a multi-source heat pump coordinated heating method for a single building, such as... Figure 2 As shown, the method includes:

[0025] 201. Start the solar thermal module to replenish the water tank with heat and detect the outdoor temperature.

[0026] In this embodiment, the collaborative heating system can collect outdoor temperature data via a temperature sensor and activate the dynamic photothermal module in the multi-source heat pump collaborative heating device of a single building to replenish heat to the water tank, thereby improving heating efficiency. Specifically, when the outdoor temperature is higher than a first preset temperature, step 202 is executed to heat the single building. When the outdoor temperature is lower than or equal to the first preset temperature but higher than a second preset temperature, step 203 is executed to heat the single building. When the outdoor temperature is lower than or equal to the second preset temperature, step 204 is executed to heat the single building.

[0027] In this step, such as Figure 3 As shown, the solar collector converts solar energy into direct current (DC) through a photovoltaic array. This DC is then converted into alternating current (AC) by a high-frequency inverter and transmitted to the intelligent distribution controller. Based on system requirements, the controller drives the heat pump compressor to generate heat and directs the generated heat to the water tank, completing the heat supply. In this process, the low-temperature water in the tank is first preheated by the PV / T modules and then flows into the heat pump compressor through the fourth valve. The intelligent distribution controller precisely controls the compressor's operating parameters, ensuring that the preheated water heats up during compression. The heated water then flows back to the water tank, further increasing the tank's water temperature.

[0028] Understandably, the intelligent distribution controller has power optimization management functions. When the system generates surplus power, the controller automatically inputs the power into the phase change thermal storage unit to complete the thermal energy storage. When the outdoor temperature drops to or below the second preset temperature, i.e., when entering the severe cold condition in the middle of the heating season, the phase change thermal storage unit releases the stored thermal energy to assist the solar thermal module in replenishing the water tank with heat, ensuring that the system can still operate stably and efficiently in extreme environments, effectively reducing energy consumption.

[0029] 202. When the outdoor temperature is higher than the first preset temperature, the low-temperature water in the water tank flows into the air source heat pump through the heat exchanger for heating. The heated high-temperature water flows into the water tank through the confluencer. The high-temperature water in the water tank flows into the heating pipeline through the first valve for heating.

[0030] In this embodiment, when the outdoor temperature is higher than a first preset temperature, i.e., when the system determines that it is in the initial or final stage of heating, the air source heat pump is automatically activated as the sole heating device. At this time, the system simultaneously opens the first, second, and fourth valves, and closes the third and fifth valves, establishing a dedicated heating circulation path. The returned heating water is collected in the water tank via the return water pipe. The low-temperature water in the tank flows into the heat exchanger under the drive of the water pump, and then is transported to the air source heat pump for heating through the heat exchanger channel. It should be noted that the water tank adopts a layered heat storage design, with the upper layer storing high-temperature hot water and the lower layer storing low-temperature cold water. The high-temperature water heated by the air source heat pump is combined through a confluencer and reinjected into the upper layer of the water tank via the second valve. Subsequently, the high-temperature hot water in the upper layer flows into the heating pipe through the first valve, completing the heat transfer to the end user. It should be noted that in traditional heating systems, when the outdoor temperature is below -5°C, the heating efficiency of a single air source heat pump drops sharply, requiring reliance on energy-intensive electric auxiliary heating equipment to maintain heating, thus significantly increasing operating costs. Based on this, the first preset temperature is set to -5°C. When the outdoor ambient temperature is higher than this threshold, the heating demand can be met by using a single air source heat pump, thanks to its significant advantages of high energy efficiency and low installation cost. However, when the outdoor temperature drops to -5°C or below, the system will execute step 203 below. Through the dynamic coordinated operation of the air source heat pump and the ground source heat pump, the efficiency degradation problem of a single heat pump in low-temperature environments is effectively compensated, ensuring the continuous, stable, and efficient operation of the heating system.

[0031] 203. When the outdoor temperature is lower than or equal to the first preset temperature and higher than the second preset temperature, the low-temperature water in the water tank flows into the air source heat pump and the ground source heat pump through the heat exchanger for heating. The heated high-temperature water flows into the water tank through the confluencer, and the high-temperature water in the water tank flows into the heating pipeline through the first valve for heating.

[0032] In this embodiment, when the outdoor temperature is lower than or equal to a first preset temperature but higher than a second preset temperature, the system automatically determines that it has entered a colder operating condition and immediately starts the combined heating mode of the air source heat pump and the ground source heat pump. At this time, the system simultaneously opens the first, second, and fourth valves and closes the third and fifth valves, establishing a specific heating circulation path. The returned heating water is collected in the water tank via the return water pipe. The low-temperature water in the tank flows into the heat exchanger under the drive of the water pump, and then flows along the heat exchanger channel, entering the air source heat pump and the ground source heat pump in parallel for heat energy conversion. The high-temperature water formed by the combined heating of the two heat pumps is merged through the confluencer and then reinjected into the water tank through the second valve. At this time, the high-temperature water in the tank flows orderly into the heating pipe with the help of the first valve, ultimately achieving heat delivery to the end user. This operating mode, through the efficient cooperation of the two heat pumps, constructs a closed-loop heating system, ensuring that the system can complete heat transfer and supply in a stable and efficient manner in colder environments.

[0033] 204. When the outdoor temperature is lower than or equal to the second preset temperature, the low-temperature water in the water tank exchanges heat through the heat exchanger. The medium-temperature water after heat exchange enters the biomass boiler through the circulating water pump. The biomass boiler generates electricity through a micro gas turbine to drive the ground source heat pump and heat the incoming medium-temperature water. The heated high-temperature water mixes with the low-temperature water in the water tank and flows into the heating pipeline for heating.

[0034] In this embodiment, when the outdoor temperature is lower than or equal to the second preset temperature, the system automatically determines that a severe cold period has begun, at which point the heating process is in the middle stage of heating. The system then activates the coordinated operation mode of the air source heat pump, ground source heat pump, and biomass boiler, simultaneously opening the first, third, fourth, and fifth valves and closing the second valve. The returned heating water flows into the water tank via the return water pipe. The low-temperature water in the tank flows into the heat exchanger under the drive of the water pump, and then is split and flows in parallel into the air source heat pump and ground source heat pump for preheating. After being heated by the dual heat pumps, the water temperature rises to a medium temperature of approximately 40°C. This medium-temperature water is combined through a confluencer and then flows back to the heat exchanger through the third valve. Next, the medium-temperature water in the heat exchanger is transported to the biomass boiler by a circulating water pump. In this way, the biomass boiler receives preheated medium-temperature water, rather than untreated cold water, significantly reducing biomass fuel consumption and effectively controlling operating costs. This heating mode utilizes heat pumps to handle the basic heat load, allowing biomass boilers to operate efficiently only when necessary, significantly improving the overall heat output stability of the system. Simultaneously, this operating strategy optimizes energy utilization efficiency, further reducing carbon emissions per unit of heat supplied, achieving the dual goals of energy conservation, emission reduction, and economical operation.

[0035] In biomass boilers, such as Figure 4As shown, biomass pellets, as raw materials, undergo a gasification reaction in a gasifier at 850°C, generating combustible gas (H2+CO) and high-temperature flue gas at 600°C. The combustible gas is fed into a micro gas turbine to generate electricity, which drives a ground source heat pump. The high-temperature flue gas is fed into a waste heat boiler, heating the medium-temperature water (e.g., 40°C) in the boiler to a preset water temperature (e.g., 80°C). The heated high-temperature water is then mixed with low-temperature water flowing out of a water tank (e.g., 55°C) and flows into the heating pipeline for heating. The low-temperature water in the water tank flows out through a first valve, mixes with the high-temperature water, and flows into the heating pipeline for heating.

[0036] The method provided in this application provides heat to the water tank through a solar thermal module, improving energy utilization. It dynamically adjusts the multi-heat source collaborative operation mode based on outdoor temperature. When the outdoor temperature is high, only the air source heat pump is used for heating, fully leveraging its high energy efficiency and low cost. When the temperature drops below a first preset temperature, the air source and ground source heat pumps are activated for collaborative heating. Utilizing the high efficiency of the dual heat pumps in different temperature zones avoids the efficiency degradation of a single heat pump in low-temperature environments, achieving tiered energy utilization. When the temperature is below a second preset temperature, a biomass boiler and a micro gas turbine are introduced. Preheated medium-temperature water is supplied to the biomass boiler, significantly reducing its fuel consumption. Simultaneously, the micro gas turbine generates electricity to drive the ground source heat pump, reducing the need for grid-connected electric auxiliary heating. In summary, the multi-heat source collaborative operation mode allows the heat pump to bear the basic heat load, while the biomass boiler operates efficiently only during low-temperature periods. Combined with the heat supply from the solar thermal module, this significantly improves the stability and continuity of the overall system heat output, effectively reducing the energy consumption and operating costs of building heating.

[0037] Those skilled in the art will understand that the steps, measures, and solutions in the various operations, methods, and processes discussed in this application can be alternated, modified, combined, or deleted. Furthermore, other steps, measures, and solutions in the various operations, methods, and processes discussed in this application can also be alternated, modified, rearranged, decomposed, combined, or deleted. Furthermore, steps, measures, and solutions in the prior art that are similar to those disclosed in this application can also be alternated, modified, rearranged, decomposed, combined, or deleted.

[0038] The above description is only a partial embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A multi-source heat pump collaborative heating method for a single building, characterized in that, The method is suitable for independent buildings, including: starting the heat supply of the water tank by the light heat module and detecting the outdoor temperature; when the outdoor temperature is higher than a first preset temperature, low-temperature water in the water tank flows into the air source heat pump through the heat exchanger for heating, and high-temperature water after heating flows into the water tank through the flow combiner, and the high-temperature water in the water tank flows into the heat supply pipeline through the first valve for heat supply; when the outdoor temperature is lower than or equal to the first preset temperature and higher than a second preset temperature, low-temperature water in the water tank flows into the air source heat pump and the ground source heat pump through the heat exchanger for heating, and high-temperature water after heating flows into the water tank through the flow combiner, and the high-temperature water in the water tank flows into the heat supply pipeline through the first valve for heat supply; when the outdoor temperature is lower than or equal to the second preset temperature, low-temperature water in the water tank is heat-exchanged by the heat exchanger, and the medium-temperature water after heat-exchanging enters the biomass boiler through the circulating water pump, the biomass boiler generates electricity by the micro gas turbine to drive the ground source heat pump, and heats the medium-temperature water flowing in, and the high-temperature water after heating is mixed with the low-temperature water in the water tank and flows into the heat supply pipeline for heat supply.

2. The method of claim 1, wherein, The method is suitable for independent buildings, including: when the outdoor temperature is higher than a first preset temperature, low-temperature water in the water tank flows into the air source heat pump through the heat exchanger for heating, and high-temperature water after heating flows into the water tank through the flow combiner, and the high-temperature water in the water tank flows into the heat supply pipeline through the first valve for heat supply; when the outdoor temperature is higher than the first preset temperature, the air source heat pump is started, the first valve, the second valve and the fourth valve are opened, and the third valve and the fifth valve are closed; heat supply return water flows into the water tank through the return water pipeline, low-temperature water in the water tank flows into the heat exchanger through the water pump, and flows into the air source heat pump through the heat exchanger channel for heating, wherein the upper layer of the water tank stores high-temperature water, and the lower layer stores low-temperature water; 3. The method of claim 1, wherein, high-temperature water after heating passes through the flow combiner and flows into the water tank through the second valve. The method is suitable for independent buildings, including: when the outdoor temperature is lower than or equal to the first preset temperature and higher than a second preset temperature, low-temperature water in the water tank flows into the air source heat pump and the ground source heat pump through the heat exchanger for heating, and high-temperature water after heating flows into the water tank through the flow combiner, and the high-temperature water in the water tank flows into the heat supply pipeline through the first valve for heat supply; 4. The method of claim 1, wherein, when the outdoor temperature is lower than or equal to the first preset temperature and higher than the second preset temperature, the air source heat pump and the ground source heat pump are started, the first valve, the second valve and the fourth valve are opened, and the third valve and the fifth valve are closed, wherein the first preset temperature is minus 5 degrees; heat supply return water flows into the water tank through the return water pipeline, low-temperature water in the water tank flows into the heat exchanger through the water pump, and flows into the air source heat pump and the ground source heat pump through the heat exchanger channel in parallel for heating, and high-temperature water after heating passes through the flow combiner and flows into the water tank through the second valve. The method is suitable for independent buildings, including: when the outdoor temperature is lower than or equal to the second preset temperature, low-temperature water in the water tank is heat-exchanged by the heat exchanger, and the medium-temperature water after heat-exchanging enters the biomass boiler through the circulating water pump, When the outdoor temperature is lower than or equal to the second preset temperature, the air source heat pump, the ground source heat pump and the biomass boiler are started, the first valve, the third valve, the fourth valve and the fifth valve are opened, and the second valve is closed; The heat supply return water flows into the water tank through the return water pipeline, the low-temperature water in the water tank flows into the heat exchanger through the water pump, and the low-temperature water flows into the air source heat pump and the ground source heat pump in parallel after passing through the heat exchanger, and the medium-temperature water after being heated flows into the heat exchanger through the third valve; The medium-temperature water in the heat exchanger flows into the biomass boiler through the circulating water pump.

5. The method of claim 4, wherein, The biomass boiler generates electricity through the micro gas turbine to drive the ground source heat pump, and heats the medium-temperature water flowing in, and the high-temperature water after being heated is mixed with the low-temperature water in the water tank and flows into the heat supply pipeline for heat supply, comprising: In the biomass boiler, biomass particles as raw materials undergo gasification reaction in the gasification furnace to generate combustible gas and high-temperature flue gas; The combustible gas is introduced into the micro gas turbine to generate electricity to drive the ground source heat pump; The high-temperature flue gas is introduced into the waste heat boiler to heat the medium-temperature water in the waste heat boiler to a preset water temperature, and the high-temperature water after being heated is mixed with the low-temperature water flowing out of the water tank and flows into the heat supply pipeline for heat supply, wherein the low-temperature water in the water tank flows out through the first valve and is mixed with the high-temperature water.

6. The method of claim 1, wherein, The starting light-heat module supplies heat to the water tank, comprising: The photovoltaic array of the solar collector outputs direct current, the direct current is inverted into alternating current by the high-frequency inverter and then transmitted to the intelligent distribution controller, the intelligent distribution controller drives the heat pump compressor to operate heating, and the heating energy is delivered to the water tank to supply heat to the water tank; When there is excess electricity, the intelligent distribution controller inputs the electricity into the phase change heat storage unit for heat storage, and the stored heat is used to supply heat to the water tank after being released.

7. The method of claim 1, wherein, The intelligent distribution controller drives the heat pump compressor to operate heating, and the heating energy is delivered to the water tank to supply heat to the water tank, comprising: The low-temperature water in the water tank is preheated by the PV / T assembly, the preheated water flows into the heat pump compressor through the fourth valve, the intelligent distribution controller drives the heat pump compressor to compress and heat, and the water after being compressed and heated flows into the water tank to supply heat to the water tank.

8. A multi-source heat pump cogeneration device, characterized by comprising: Comprising: The light-heat module, the heat pump heating module, the heat exchange module, the biomass boiler heating module, wherein the light-heat module comprises a PV / T assembly and a heat pump compressor; the heat pump heating module comprises an air source heat pump, a ground source heat pump and a water pump; the heat exchange module comprises a water tank, a flow combiner and a heat exchanger; and the biomass heating module comprises a water pump, a biomass boiler and a micro gas turbine.

9. The apparatus of claim 8, wherein, The backwater pipe is connected with the water tank, the water supply pipe is connected with the water tank through a first valve, the combiner is connected with the water tank through a second valve, the heat exchanger is connected with the water tank, the heat exchanger is connected with the combiner through a third valve, the heat exchanger is connected with the air source heat pump through a water pump, the heat exchanger is connected with the ground source heat pump through a water pump, the heat exchanger is connected with the biomass boiler through a circulating water pump, the PV / T assembly is connected with the heat pump compressor through a fourth valve, the heat pump compressor is connected with the water tank, the biomass boiler is connected with the micro gas turbine through a fifth valve, the micro gas turbine is connected with the ground source heat pump, and the biomass boiler is connected with the water supply pipe.

10. The apparatus of claim 9, wherein, When the outdoor temperature is higher than the first preset temperature, the air source heat pump is started, the first valve, the second valve and the fourth valve are opened, and the third valve and the fifth valve are closed; when the outdoor temperature is lower than or equal to the first preset temperature and higher than the second preset temperature, the air source heat pump and the ground source heat pump are started, the first valve, the second valve and the fourth valve are opened, and the third valve and the fifth valve are closed; when the outdoor temperature is lower than or equal to the second preset temperature, the air source heat pump, the ground source heat pump and the biomass boiler are started, the first valve, the third valve, the fourth valve and the fifth valve are opened, and the second valve is closed.

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