A solar coupling system combining bathroom wastewater and waste gas waste heat recovery

Abstract

The present invention discloses a solar coupling system for recovering waste heat of waste water and waste gas, comprising a solar photovoltaic system, a waste heat recovery unit and an air source heat pump unit, wherein the solar photovoltaic system comprises a water storage unit and an electricity storage unit; the waste heat recovery unit comprises a waste water recovery unit, a first waste gas conversion unit, a waste gas recovery unit and a second waste gas conversion unit; wherein: the water storage unit sends hot water to the waste water recovery unit through a hot water supply tank; the waste water recovery unit sends treated water to the hot water supply tank by using the waste heat of waste water through the first waste gas conversion unit; the waste gas recovery unit sends the treated water that has been energy exchanged by using the waste heat of waste gas to a water reservoir through the second waste gas conversion unit and the first waste gas conversion unit in turn; the air source heat pump unit is connected to the hot water supply tank through a valve in turn; the present invention realizes a system that couples energy supply with waste gas, waste water waste heat recovery unit, solar photovoltaic system and air source heat pump unit, makes full use of recyclable and reusable energy and renewable energy, and greatly improves energy utilization efficiency.

Description

Technical Field

[0001] The present invention belongs to the technical field of bathroom waste heat recovery and building photovoltaic integrated energy system, and in particular relates to a solar coupling system combined with waste water and exhaust gas waste heat recovery. Background Art

[0002] Energy, as an important material basis for the survival and development of human society, has greatly promoted the development of human society and economy. In response to the increase in energy demand and the limitation of traditional energy, the main measure is to increase revenue and reduce expenditure, that is, to develop new energy and save traditional energy.

[0003] Bathing water accounts for an increasing proportion of domestic hot water energy consumption, and the energy utilization rate is also the lowest. In view of the large amount of bathing wastewater and exhaust gas emissions, large amounts of waste heat, and the impact of direct emissions on the environment, it is of great significance to propose the recovery and reuse of bathroom waste heat.

[0004] Photovoltaic roof is one of the ways to integrate photovoltaic buildings. Among photovoltaic technologies, solar photovoltaic power generation technology is less restricted by geographical location and has the advantages of safety, reliability, low pollution, short construction period and easy maintenance. It is one of the most promising renewable energy technologies. Solar panels combined with phase change energy storage materials can achieve efficient conversion of solar energy and electrical energy, meet the needs of self-generation and self-use of clean energy, and at the same time, the surplus electricity can be fed into the power grid.

[0005] The air source heat pump system can realize the function of cross-season heat storage, and is an energy-saving technology that has been widely promoted and used in air conditioning industry projects in recent years. With the development of economy and technology, air source heat pump units are increasingly used in air conditioning projects. Air source heat pumps are easy to use, can make full use of low-temperature energy in the atmospheric environment, and have high energy utilization rate.

[0006] The present invention organically combines the waste heat recovery unit, the solar photovoltaic system and the air source heat pump system. On the one hand, the waste heat recovery unit is connected to the solar photovoltaic system to make full use of waste heat recovery technology and solar energy, greatly improve energy utilization efficiency, and solve the pollution caused by waste heat to the environment and the harm to human health. On the other hand, the waste heat recovery unit is combined with the air source heat pump system to solve the heat accumulation problem existing in the air source heat pump. In addition, the organic combination of the three can also realize the waste heat recovery function of the bathroom as well as the functions of heating, power supply and hot water supply at the same time, making full use of low-grade heat sources and renewable energy, and providing energy-saving technology for realizing low-carbon transformation. Summary of the invention

[0007] In view of the technical problems existing in the prior art, the present invention provides a system integrating bathroom waste heat, PV panels and air source heat pumps. It not only solves the pollution to the environment and the harm to human health caused by bathroom waste heat, but also solves the heat accumulation problem existing in air source heat pumps; in addition, it can also realize the functions of heating, power supply and hot water supply at the same time, make full use of low-grade heat sources and renewable energy, combine bathroom waste water and waste gas waste heat, photovoltaic power generation technology and air source heat pump system, achieve complementary advantages and reasonable utilization, realize energy cascade utilization, improve system energy utilization rate while taking into account system stability.

[0008] The present invention adopts the following technical solution:

[0009] A solar coupling system for recovering waste heat from waste water and waste gas, comprising a solar photovoltaic system, a waste heat recovery unit and an air source heat pump unit, wherein the solar photovoltaic system comprises a water storage unit and an electricity storage unit; the waste heat recovery unit comprises a waste water recovery unit, a first waste gas conversion unit, a waste gas recovery unit and a second waste gas conversion unit; wherein: the water storage unit delivers hot water to the waste water recovery unit through a hot water supply tank; the waste water recovery unit delivers treated water to the hot water supply tank using waste heat from waste water through the first waste gas conversion unit; the waste gas recovery unit delivers treated water that has been subjected to energy exchange using waste heat from waste gas to a water reservoir through the second waste gas conversion unit and the first waste gas conversion unit in turn; and the air source heat pump unit is connected to the hot water supply tank through a valve in turn.

[0010] Furthermore, the water storage unit and the power storage unit both include solar photovoltaic modules; the water storage unit also includes a temperature sensor, an electric heater, a water storage tank, a valve and a water pump; the power storage unit also includes a battery and an inverter; wherein:

[0011] The solar photovoltaic module is connected to a temperature sensor and an electric heater in sequence, the outlet of the electric heater is connected to the water inlet of the water storage tank, and the water outlet of the water storage tank is connected to a water pump and a valve in sequence to connect to a hot water tank to realize a water supply function;

[0012] The solar photovoltaic components are connected to the battery and the inverter in sequence, and are connected to the electric heater and the water pump electrical equipment through the power supply pipeline. Another pipeline at the inverter outlet is connected to the indoor electrical equipment to realize the power supply function.

[0013] Furthermore, the wastewater recovery unit includes a filter screen, a filter, a decontaminant, a water reservoir, and a heat pipe heat exchanger; the first exhaust gas conversion unit includes an evaporator, a compressor, a condenser, and a throttle valve; wherein:

[0014] The wastewater recovery unit drains the generated wastewater to the wastewater return pipe and then connects it to the inlet of the filter. The filter filters the garbage residue in the wastewater and then transports the treated wastewater to the filter, the decontaminant remover and the water pump through its outlet. The outlet of the water pump is connected to the inlet of the water reservoir. After being treated, it flows through the inlet of the heat pipe heat exchanger and exchanges heat therein. A pipeline is led out from the outlet of the heat pipe heat exchanger and connected to the valve and the water pump in sequence and then connected to the inlet of the evaporator; a pipeline is led out from the water outlet of the evaporator and then connected to the water inlet of the compressor; the water outlet of the compressor is connected to the water inlet of the condenser through a pipeline; a pipeline is led out from the water outlet of the condenser and connected to a throttle valve, another pipeline at the water outlet of the condenser is connected to the hot water tank, and the hot water tank is connected to the bathroom, thereby forming a cycle.

[0015] Furthermore, the exhaust gas recovery unit includes a filter, a heat pipe heat exchanger and a temperature sensor; the second exhaust gas unit includes an evaporator, a throttle valve, a compressor and a condenser; wherein: the exhaust gas recovery unit sends the generated exhaust gas to a pipeline and connects it to the inlet of the filter; the filter filters the residue in the exhaust gas and then transports the treated exhaust gas through its outlet to the inlet of the heat pipe heat exchanger and performs heat exchange therein; a pipeline is led out from the outlet of the heat pipe heat exchanger and connected to a temperature sensor, a water pump and a valve in sequence; the valve outlet is connected to the water inlet of the evaporator; a pipeline is led out from the water outlet of the evaporator and connected to the water inlet of the compressor; the water outlet of the compressor is connected to the water inlet of the condenser through a pipeline; a pipeline is led out from the water outlet of the condenser and connected to the throttle valve, and the water outlet of the condenser is connected to the lower part of the water reservoir.

[0016] Furthermore, the solar photovoltaic module includes an outer glass cover, an air layer, a monocrystalline silicon photovoltaic cell module, a fin tube, an air channel, and an internal enclosure structure wall; the internal enclosure structure wall is provided with a phase change energy storage material and an atmospheric water reservoir; an air layer is provided between the monocrystalline silicon photovoltaic cell module and the glass cover; a monocrystalline silicon photovoltaic cell module is provided in the air layer channel; and a fin tube is provided between the internal enclosure structure wall and the air layer.

[0017] Beneficial Effects

[0018] 1. The bathroom waste heat recovery unit of the present invention is coupled with solar energy. By constructing a system that uses bathroom waste gas, waste water waste heat recovery, solar photovoltaic system and air source heat pump system for coupling power supply, it fully utilizes recyclable and reusable energy and renewable energy, and greatly improves energy utilization efficiency;

[0019] 2. The present invention can simultaneously realize the functions of bathroom waste heat recovery and reuse as well as heating, power supply and hot water supply;

[0020] 3. The solar photovoltaic module of the present invention is provided with a phase-change energy storage water tank, which improves the heat storage efficiency of the water tank;

[0021] 4. The present invention proposes to set up an atmospheric water reservoir behind the solar photovoltaic panel, and use the atmospheric water reservoir to take away the heat of the photovoltaic panel and provide it to the building, thereby increasing the power generation of the solar cell by more than 15%, greatly improving the efficiency of photovoltaic power generation and heat use.

[0022] 5. The waste gas heat recovery unit and waste water heat recovery unit of the present invention both adopt heat pipe heat exchangers. The partition in the heat exchanger completely separates the cold and hot fluids, realizing countercurrent heat exchange of the cold and hot fluids. The heat exchange coefficient of the flow outside the tube is much higher than the heat exchange coefficient of the flow inside the tube, which greatly improves the heat exchange efficiency of the system.

[0023] 6. The system operation mode of the present invention is divided into summer daytime and nighttime according to different seasons and time, realizing the supply demand of hot water heat in different time periods and achieving the maximum utilization rate of renewable energy;

[0024] 7. The present invention utilizes recyclable bathroom waste heat and solar energy, fully utilizes recyclable energy and clean energy, greatly improves energy utilization, and gives full play to the advantages of renewable energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Attached Figure 1 It is a schematic diagram of the present invention.

[0026] Attached Figure 2 It is a structural diagram of the solar photovoltaic component of the present invention.

[0027] Solar photovoltaic assembly 1, temperature sensor 2, electric heater 3, water storage tank 4, hot water tank 5, battery 6, inverter 7, solar photovoltaic system 8, bathroom 9, filter 10, filter 11, decontaminant 12, water reservoir 13, heat pipe heat exchanger 14, evaporator 15, compressor 16, condenser 17, throttle valve 18, air source heat pump unit 19, filter 20, heat pipe heat exchanger 21, temperature sensor 22, evaporator 23, compressor 24, condenser 25, throttle valve 26, automatic stop valve 27, water pump 28, automatic stop valve 29, water pump 30, water pump 31, valve 32, water pump 33, valve 34, three-way valve 35, 36, room 37, wastewater return pipe 38, flow regulating valve 39, 40, 41, 42, 43, 44, air duct 45.

[0028] Outer glass cover 1-1, air interlayer 1-2, monocrystalline silicon photovoltaic cell assembly 1-3, fin tube 1-4, air channel 1-5, inner enclosure structure wall 1-6, phase change energy storage material 1-7, atmospheric water storage tank 1-8. DETAILED DESCRIPTION

[0029] The present invention is described in detail below in conjunction with the accompanying drawings:

[0030] like Figure 1 As shown, the present invention is a solar-coupled air source heat pump unit that combines waste heat recovery of bathroom waste water and exhaust gas, including a waste heat recovery unit, a solar photovoltaic system 8, a hot water tank 5, a waste water return pipe 38, and an air source heat pump unit 19.

[0031] The waste heat recovery unit and the solar photovoltaic system 8 include a temperature sensor 2, an electric heater 3, a water tank 4, a valve 28, and a water pump 29 which are connected in sequence. The waste water heat recovery unit drains the waste water generated in the bathroom 9 to the waste water return pipe 38 and then connects it to the inlet of the filter 10. The filter 10 filters the garbage residue in the waste water and then transports the treated waste water through its outlet to the filter 11, the decontaminator 12, and the water pump 30. The outlet of the water pump 30 is connected to the inlet of the water reservoir 13. After being treated, the waste water flows through the inlet of the heat pipe heat exchanger 14 and exchanges heat therein. A pipeline is drawn out from the outlet of the heat pipe heat exchanger 14 and connected to the valve 31 and the water pump 32 in sequence, and then connected to the inlet of the evaporator 15. The water outlet of the evaporator 15 reaches the water reservoir 13 through the flow regulating valve 40.

[0032] The first exhaust gas conversion unit includes an evaporator 15, a compressor 16, a condenser 17 and a throttle valve 18 which are connected in a circular manner. The water outlet of the evaporator 15 is connected to the water inlet of the compressor 16 through a pipeline; the water outlet of the compressor 16 is connected to the water inlet of the condenser 17 through a pipeline; a pipeline is led out from the water outlet of the condenser 17 and connected to the throttle valve 18, and another pipeline at the water outlet of the condenser 17 is connected to the hot water tank 5, and the hot water tank 5 is connected to the bathroom 9, thereby forming a cycle; the hot water storage tank 4 is only a temporary container for hot water, and all hot water prepared by the system will be stored in the hot water supply tank 5. The hot water storage tank 5 exchanges heat with the refrigerant medium in the heat exchange coil 43 and the hot water in the water tank through the heat exchange coil 43.

[0033] The waste gas recovery unit conveys the waste gas generated by the bathroom 9 to the air duct 45 and then connects it to the inlet of the filter 20. After filtering the residue in the waste gas, the filter 20 conveys the treated waste gas through its outlet to the inlet of the heat pipe heat exchanger 21 and performs heat exchange therein. A pipeline is led out from the outlet of the heat pipe heat exchanger 21 and connected to the temperature sensor 22, the water pump 33, and the valve 34 in sequence. The outlet of the valve 34 is connected to the water inlet of the evaporator 23. The water outlet of the evaporator 23 passes through the flow regulating valve 39 to the inlet of the tubular heat exchanger 21 to complete a cycle. A pipeline is led out from the evaporator 23 and connected to the water inlet of the compressor 24. The water outlet of the compressor 24 is connected to the water inlet of the condenser 25 through a pipeline. A pipeline is led out from the water outlet of the condenser 25 and connected to the throttle valve 26. The water outlet of the condenser 25 is connected to the lower part of the water reservoir 13.

[0034] A pipeline is led out from the water outlet of the copper tube on the back of the solar photovoltaic module and connected to the temperature sensor 2 and the electric heater 3. The outlet of the electric heater 3 is connected to the water inlet of the water tank 4. The water outlet of the water tank 4 is connected to the water pump 28 and the valve 29 in sequence. The valve 29 is connected to the hot water tank 5. The photovoltaic cells of the solar photovoltaic system 8 are connected to the battery 6 and the inverter 7 in sequence, and are connected to the electric heater 3 and the water pump 28 electrical equipment through the power supply pipeline. Another pipeline at the outlet of the inverter 7 is connected to the electrical equipment in the room 37 to realize the system power supply function.

[0035] The solar photovoltaic system, air source heat pump unit and waste heat recovery unit are connected in parallel through the hot water tank 5. The air source heat pump unit and the waste heat recovery unit are connected by three-way valves 35 and 36. Each system has an independent circulation pump, which can provide sufficient power for heat exchange.

[0036] The solar photovoltaic module 1 includes an outer glass cover 1-1, an air interlayer 1-2, a monocrystalline silicon photovoltaic cell module 1-3, a fin tube 1-4, an air channel 1-5, and an inner enclosure structure wall 1-6; wherein the inner enclosure structure wall is provided with a phase change energy storage material 1-7 and an atmospheric water reservoir 1-8; an air interlayer 1-2 is provided between the monocrystalline silicon photovoltaic cell module 1-3 and the glass cover 1-1; a monocrystalline silicon photovoltaic cell module 1-3 is provided in the channel of the air interlayer 1-2; and a fin tube 1-4 is provided between the inner enclosure structure wall 1-6 and the air interlayer 1-2.

[0037] The waste gas recovery unit and the waste water recovery unit both use a heat pipe heat exchanger. The heat pipe heat exchanger can completely separate the cold and hot fluids through the middle partition of the heat exchanger, making it easier to achieve countercurrent heat exchange of the cold and hot fluids. Both the cold and hot fluids flow outside the tube, and the heat transfer coefficient of the flow outside the tube is much higher than the heat transfer coefficient of the flow inside the tube, so the heat transfer efficiency is high.

[0038] The water storage tank is a phase change water storage tank, which improves the heat storage efficiency of the water tank. Its hot water return port is located at a lower position in the lower part of the water storage tank, and the drain port is located at the bottom of the water tank, wherein the drain port and the cold water inlet are shared, and the overflow port of the water storage tank is located at the upper part of the water tank, and its position is higher than the hot water inlet.

[0039] The following is combined with Figure 1 , Attachment Figure 2 The present invention will be further described:

[0040] When the present invention is operated in summer, the operation modes during the day and at night are respectively:

[0041] 1. Daytime operation mode

[0042] (1) When the solar energy is abundant during the day, the solar photovoltaic system 8 is started to store heat. The water outlet of the copper pipe on the back of the solar photovoltaic panel 1 is connected to the temperature sensor 2, the electric heater 3, the water storage tank 4, the water pump 28, the automatic stop valve 29, the hot water tank 5 and the water inlet on the back of the solar photovoltaic panel. The heat energy released by the solar photovoltaic module 1 is brought into the water storage tank by the water in the copper pipe on the back. The temperature sensor 2 is used to detect the temperature of the water storage tank 4. When the temperature in the water storage tank 4 is higher than the temperature of the hot water tank 5, the electric heater 3 and the water pump 28 will no longer work and the automatic stop valve 29 will be closed. In this way, the purpose of maximizing the use of solar energy can be achieved. The specific process is: the water outlet on the back of the solar photovoltaic panel 1 - temperature sensor 2 - electric heater 3 - water storage tank 4 - water pump 28 - automatic stop valve 29 - hot water tank 5 - water inlet on the back of the solar photovoltaic panel 1.

[0043] (2) When the water storage volume of the bathroom reaches a certain amount, the solar photovoltaic heat collection system 8 is switched to the sewage source heat pump heating system, and the wastewater of the bathroom 9 flows through the wastewater pipe 38, the filter 10, the filter 11, the decontaminant 12, and the water pump 30 to reach the water reservoir 13; at the same time, the high-temperature gas of the bathroom 9 comes out of the air duct 45 and is processed by the filter 20, and then is transported to the inlet of the heat pipe heat exchanger 21 and heat exchange is carried out therein, and then reaches the temperature sensor 22 to detect the temperature of the gas, and then leads out of the pipeline and connects the water pump 33 and the valve 34 in sequence, and the waste gas heat recovery unit replenishes the excess heat to the lower part of the water reservoir 13, thereby solving the problem of water temperature stratification between the upper and lower parts of the water reservoir 13 and realizing energy cascade utilization. The specific process is: high-temperature gas in the bathroom 9 - air duct 45 - filter 20 - heat pipe heat exchanger 21 - temperature sensor 22 - water pump 33 - automatic stop valve 34 - water reservoir 13. The water in the water reservoir 13 reaches the inlet of the heat pipe heat exchanger 14 and exchanges heat therein, and then is led out through a pipeline connected to the water pump 31 and the valve 32 to reach the evaporator 15, and is circulated in sequence to connect the evaporator 15, the compressor 16, the condenser 17 and the throttle valve 18, thereby realizing the function of waste heat recovery in the bathroom.

[0044] (3) The working process of the refrigerant in the sewage source heat pump unit is as follows: the refrigerant vaporizes in the evaporator 15, and then enters the compressor 16 to compress the low-temperature dry refrigerant vapor into high-temperature and high-pressure saturated steam. The refrigerant vapor releases heat in the condenser 17 with the help of the cooling medium, and the tap water and the refrigerant exchange heat. The refrigerant liquefies into a liquid refrigerant at room temperature in this process, and then enters the evaporator 15 after the pressure is reduced by the throttle valve 18 to complete a refrigerant cycle. The heat of the sewage is used to prepare high-temperature hot water to reach the hot water tank 5. If the heating temperature of the sewage source heat pump does not meet the heating requirements, the air source heat pump system 19 is started to assist in heating. This process is combined with the above two processes to achieve the coupling of the three systems of solar photovoltaic system, air source heat pump system and sewage source heat pump system, and maximize the use of bathroom waste heat and solar energy, thereby achieving the functions of hot water production and hot water supply.

[0045] (4) The solar photovoltaic module 1 stores the electric energy generated by the photovoltaic cells in the storage battery 6, converting a part of the solar energy into high-quality electric energy. The direct current in the storage battery 6 is converted into alternating current through the inverter 7 and supplied to the temperature sensor 2, the electric heater 3, and the water pump 28 in turn to form a power supply working cycle, and the storage battery 7 supplies power to the room, thereby realizing the power supply function.

[0046] (5) The solar photovoltaic module 1 described above uses finned tubes 1-4. The contact area between this type of tube and the monocrystalline silicon photovoltaic cell module 1-3 is larger than that of ordinary circular tubes. It has an extended secondary surface, which accelerates the heat exchange between the photovoltaic panel and the energy storage material 1-7, and thus can take away the heat of the photovoltaic cell panel more quickly; the use of phase change energy storage material 1-7 can absorb the heat of the air and reduce the surface temperature; the atmospheric water reservoir 1-8 in the solar photovoltaic module 1 transfers the heat to the cooling layer of the atmospheric water reservoir as the solar panel heats up during the day. This heat in turn drives the evaporation of the water stored in the atmospheric water reservoir 1-8 to consume the waste heat of the photovoltaic panel and evaporate the absorbed water as energy. Since the enthalpy value of water is relatively high, the evaporation of water will take away a large amount of heat, thereby reducing the temperature of the photovoltaic panel.

[0047] 2. Night operation mode

[0048] (1) The functions realized by the bathroom waste heat recovery unit, solar photovoltaic system, and air source heat pump system coupling part, as well as the functions of hot water production and supply, and power supply are the same as above;

[0049] (2) When solar energy is insufficient, the solar photovoltaic system 8 is started to store heat. A pipeline is led out from the water outlet of the copper pipe on the back of the solar photovoltaic module 1 and connected in sequence to the temperature sensor 2, the electric heater 3, the water storage tank 4, the water pump 28, the automatic stop valve 29, and the hot water tank 37, and then connected to the water inlet on the back of the solar photovoltaic panel 1. The heat energy released by the solar photovoltaic module 1 is brought into the water storage tank 4 by the water in the copper pipe on its back. The temperature sensor 2 is used to detect the temperature of the water storage tank 4. When the temperature in the water storage tank 4 is lower than the temperature of the hot water tank 5, the temperature sensor 2, the electric heater 3, and the water pump 28 start working, and the automatic stop valve 29 opens. When the water storage volume accumulates to a certain level, the solar photovoltaic system is turned off, and the sewage source heat pump heating system and the air source heat pump system are turned on. The air source heat pump is connected to the hot water tank through a three-way valve, and heats in parallel with the sewage source heat pump heating system. The air source heat pump system assists the sewage source heat pump heating system in heating. At this time, the start and stop of the air source heat pump system are selected according to the heating temperature.

[0050] (3) The atmospheric water reservoir 1-8 in the solar photovoltaic module 1 collects water vapor in the atmosphere at night. As the solar cell module 1-3 heats up, it transfers heat to the cooling layer of the reservoir. This heat in turn drives the evaporation of water stored in the reservoir to consume the waste heat of the photovoltaic panel, and as an energy source, the absorbed water evaporates and takes away a large amount of heat, thereby lowering the temperature of the photovoltaic panel. It is possible to collect water vapor in the atmosphere at night based on an adsorption method. Since the atmospheric water reservoir 1-8 is directly connected to the back of the photovoltaic panel, it is able to extract and store a large amount of water from the air, even when the photovoltaic panel is not working at night.

[0051] The above detailed description of the daytime and nighttime operation modes of the system proves that the technical solution of the present invention can solve the problem of waste gas generated by the bathroom causing harm to the environment and human health; the daytime operation mode proves that the system can realize the functions of heating, power supply and hot water supply while realizing the waste heat recovery and utilization of the bathroom; the nighttime operation mode utilizes the low power consumption at night to start the sewage source heat pump unit to heat hot water, and store the prepared hot water in the hot water supply tank for heat storage. The device can also recover the waste heat of the bathroom and recycle it to make domestic hot water suitable for bathroom use.

Claims

1. A solar coupling system for waste water and waste gas waste heat recovery, comprising a solar photovoltaic system, a waste heat recovery unit and an air source heat pump unit, characterized in that: The solar photovoltaic system includes a water storage unit and an electricity storage unit; the waste heat recovery unit includes a waste water recovery unit, a first waste gas conversion unit, a waste gas recovery unit and a second waste gas conversion unit; wherein: the water storage unit sends hot water to the waste water recovery unit through a hot water tank; the waste water recovery unit uses the waste heat of waste water to send the treated water to the hot water tank through the first waste gas conversion unit; the waste gas recovery unit sequentially sends the water treated by energy exchange using the waste heat of waste gas to the water tank through the second waste gas conversion unit and the first waste gas conversion unit; the air source heat pump unit is sequentially connected to the hot water tank through a valve; the water storage unit and the electricity storage unit both include solar photovoltaic components; the water storage unit also includes a temperature sensor, an electric heater, a water storage tank, a valve and a water pump; the electricity storage unit also includes a battery and an inverter; wherein: The solar photovoltaic module is connected to a temperature sensor and an electric heater in sequence, the outlet of the electric heater is connected to the water inlet of the water storage tank, and the water outlet of the water storage tank is connected to a water pump and a valve in sequence to connect to a hot water tank to realize a water supply function; The solar photovoltaic assembly is connected to the battery and the inverter in sequence, and is connected to the electric heater and the water pump electrical equipment through the power supply pipeline. Another pipeline at the inverter outlet is connected to the indoor electrical equipment to realize the power supply function; The wastewater recovery unit includes a filter screen, a filter, a decontaminant, a water reservoir, and a heat pipe heat exchanger; the first exhaust gas conversion unit includes an evaporator, a compressor, a condenser, and a throttle valve; wherein: The wastewater recovery unit drains the generated wastewater to the wastewater return pipe and then connects it to the inlet of the filter. The filter filters the garbage residue in the wastewater and then transports the treated wastewater to the filter, the decontaminant remover and the water pump through its outlet. The outlet of the water pump is connected to the inlet of the water reservoir. After being treated, it flows through the inlet of the heat pipe heat exchanger and performs heat exchange therein. A pipeline is led out from the outlet of the heat pipe heat exchanger and connected to the valve and the water pump in sequence and then connected to the inlet of the evaporator; a pipeline is led out from the water outlet of the evaporator and then connected to the water inlet of the compressor; the water outlet of the compressor is connected to the water inlet of the condenser through a pipeline; a pipeline is led out from the water outlet of the condenser and connected to a throttle valve, another pipeline at the water outlet of the condenser is connected to the hot water tank, and the hot water tank is connected to the bathroom, thereby forming a cycle; wherein: The exhaust gas recovery unit includes a filter, a heat pipe heat exchanger and a temperature sensor; the second exhaust gas conversion unit includes an evaporator, a throttle valve, a compressor and a condenser; wherein: the exhaust gas recovery unit sends the generated exhaust gas to a pipeline and connects it to the inlet of the filter; the filter filters the residue in the exhaust gas and then transports the treated exhaust gas through its outlet to the inlet of the heat pipe heat exchanger and performs heat exchange therein; a pipeline is led out from the outlet of the heat pipe heat exchanger and connected to a temperature sensor, a water pump and a valve in sequence; the valve outlet is connected to the water inlet of the evaporator; a pipeline is led out from the water outlet of the evaporator and connected to the water inlet of the compressor; the water outlet of the compressor is connected to the water inlet of the condenser through a pipeline; a pipeline is led out from the water outlet of the condenser and connected to the throttle valve, and the water outlet of the condenser is connected to the lower part of the water reservoir.

2. A solar coupling system for waste water and waste gas waste heat recovery according to claim 1, characterized in that: The solar photovoltaic module includes an outer glass cover, an air layer, a monocrystalline silicon photovoltaic cell module, a fin tube, an air channel, and an internal enclosure structure wall; the internal enclosure structure wall is provided with a phase change energy storage material and an atmospheric water reservoir; an air layer is provided between the monocrystalline silicon photovoltaic cell module and the glass cover; a monocrystalline silicon photovoltaic cell module is provided in the air layer channel; and a fin tube is provided between the internal enclosure structure wall and the air layer.

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