Household photovoltaic photo-thermal combined hot water supply system

Abstract

The utility model discloses a household photovoltaic photo-thermal combined hot water supply system which comprises a solar PVT integrated plate, the solar PVT integrated plate is connected with a water tank through a first photo-thermal heat circulating pipe and a second photo-thermal heat circulating pipe, and a heating module and a spiral heat exchange pipe or a jacket heat exchanger are arranged in the water tank. One end of the spiral heat exchange pipe or the jacket heat exchanger is communicated with the first photo-thermal heat circulating pipe, the other opposite end of the spiral heat exchange pipe or the jacket heat exchanger is communicated with the second photo-thermal heat circulating pipe, and a hot water supply pipe is arranged at a water outlet of the water tank. The solar water heater can provide domestic hot water with low energy consumption, has multiple hot water production capacities of photo-thermal and direct-current photoelectric conversion heating and mains supply heating, improves the comprehensive utilization efficiency of solar energy, realizes low-carbon emission, and is simple in overall structure, low in cost and suitable for industrial popularization and use.

Description

Technical Field

[0001] This utility model belongs to the field of photovoltaic and solar thermal technology, specifically relating to a household photovoltaic and solar thermal combined supply hot water system. Background Technology

[0002] In cold regions of my country, residents typically rely on coal, firewood, or electricity to obtain hot water. This method is not only time-consuming and poses safety hazards, but it also damages the ecological environment. As people's living standards improve and their demands for living comfort increase, these traditional methods of hot water supply are gradually being abandoned, and the adoption of clean hot water supply methods is becoming a new trend.

[0003] Based on this, this utility model discloses a household photovoltaic-thermal combined supply hot water system. Utility Model Content

[0004] To address the technical problems existing in the prior art, the purpose of this utility model is to provide a household photovoltaic-thermal combined heat and water supply system.

[0005] To achieve the above objectives and technical effects, the technical solution adopted by this utility model is as follows:

[0006] A household photovoltaic-thermal combined heat and water supply system is characterized by comprising an integrated solar PVT panel, wherein the integrated solar PVT panel is connected to a water tank via a first solar thermal circulation pipe and a second solar thermal circulation pipe, the water tank having a built-in heating module and a spiral heat exchange pipe or a jacketed heat exchanger, one end of the spiral heat exchange pipe or jacketed heat exchanger being connected to the first solar thermal circulation pipe and the other end being connected to the second solar thermal circulation pipe, and a hot water supply pipe being provided at the outlet of the water tank.

[0007] Furthermore, the inlet of the integrated solar PVT panel is connected to one end of the spiral heat exchanger tube via a first solar thermal circulation tube, and the outlet of the integrated solar PVT panel is connected to the other end of the spiral heat exchanger tube via a second solar thermal circulation tube.

[0008] Furthermore, the second photothermal heat circulation pipe is equipped with a circulation pump and a liquid storage tank.

[0009] Furthermore, the inner wall of the water tank is provided with an insulation layer with a thickness of 2-5mm.

[0010] Furthermore, the outer wall of the water tank is provided with a nano-level negative ion powder layer (anti-scaling layer) with a thickness of 1mm.

[0011] Furthermore, the hot water supply pipe is equipped with a domestic hot water booster pump, a domestic hot water pressure detector, and a domestic hot water control valve.

[0012] Furthermore, the water tank is also equipped with a liquid level sensor, a temperature sensor, a municipal water supply control valve, and a vent. The liquid level sensor detects the water level in the tank in real time, the temperature sensor detects the water temperature in the tank in real time, and the municipal water supply control valve replenishes the tank with tap water.

[0013] Furthermore, the solar PVT integrated panel is used to convert solar radiation energy into direct current, which is then used to power the DC heater via the MTTP maximum power tracking output control board (when it is cloudy or the temperature does not reach the set temperature), and the AC mains power is used to start the heating module to provide hot water supply.

[0014] Furthermore, the household photovoltaic hot water system also includes a controller, which is connected to a heat circulation pump, a heating module, a liquid level sensor, a temperature sensor, a municipal water supply control valve, a domestic hot water booster pump, a domestic hot water control valve, and a domestic hot water pressure detector. The controller communicates bidirectionally with the client via Bluetooth, 4G, or 5G.

[0015] Furthermore, the household photovoltaic hot water system can be either integrated or split-type.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] This utility model discloses a household photovoltaic-thermal combined heating and hot water system. Its key function is to use direct sunlight combined with photovoltaic power generation. In sunny weather, the controller uses MPPT (Maximum Power Point Tracking) technology to provide a stable DC power supply, enabling the DC heating module and sunlight to work together to achieve near-zero energy consumption for domestic hot water supply. In cloudy or rainy weather, the system uses ultraviolet light penetrating through clouds and AC mains power to work together to achieve low energy consumption for domestic hot water supply, resulting in higher carbon emission levels. The overall structure is simple and the cost is low, making it suitable for industrial-scale promotion and use. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model. Detailed Implementation

[0019] The present invention will now be described in detail so that its advantages and features can be more easily understood by those skilled in the art, thereby providing a clearer and more definite definition of the scope of protection of the present invention.

[0020] The following provides a brief overview of one or more aspects to offer a basic understanding of them. This overview is not an exhaustive summary of all conceived aspects, nor is it intended to identify key or decisive elements of all aspects, nor to define the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified form to prepare for the more detailed descriptions that follow.

[0021] like Figure 1 As shown, this utility model discloses a household photovoltaic-thermal combined heating and water supply system, including a solar PVT integrated panel 1. The solar PVT integrated panel 1 is connected to a water tank 4 through a first solar thermal heat circulation pipe 2 and a second solar thermal heat circulation pipe 3. A heat circulation pump 5 is installed on the second solar thermal heat circulation pipe 3. The inner wall of the water tank 4 is provided with a heat insulation layer 41 with a thickness of 2-5mm to reduce heat loss. The water tank 4 contains a spiral heat exchange pipe 6 and a heating module 7. The spiral heat exchange pipe 6 can be replaced by a jacketed heat exchanger. One end of the spiral heat exchange pipe 6 is connected to the first solar thermal heat circulation pipe 2, and the other end is connected to the second solar thermal heat circulation pipe 3. The solar thermal circulation pipe 3 is connected, and the heating module 7 is used to heat the water in the water tank 4. A hot water supply pipe 8 is installed at the outlet of the water tank 4. The hot water supply pipe 8 is equipped with a domestic hot water booster pump, a domestic hot water pressure detector 9, and a domestic hot water control valve to supply domestic hot water. The water tank 4 is also equipped with a liquid level sensor 10, a temperature sensor 11, a municipal water supply control valve 12, and a vent 13. The liquid level sensor 10 detects the water level in the water tank 4 in real time, the temperature sensor 11 detects the water temperature in the water tank 4 in real time, and the municipal water supply control valve 12 replenishes the water tank 4 with tap water.

[0022] In some embodiments, to avoid the expansion of the liquid volume due to temperature differences during winter and summer and during operation, which could cause the pipe to expand or crack due to the lack of a release point, the present invention provides a liquid storage tank 14 in the second photothermal heat circulation pipe 3.

[0023] In some embodiments, the outlet of the second solar thermal circulation tube 3 is also equipped with a heat outlet temperature sensing probe 15, which is used to detect the temperature of the antifreeze flowing out of the solar PVT integrated panel 1 in real time.

[0024] In some embodiments, the insulation layer 41 is preferably an aluminum silicate insulation layer.

[0025] In some embodiments, the outer wall of the water tank 4 is provided with a nano-level negative ion powder layer with a thickness of 1 mm. The nano-level negative ion powder layer may or may not be provided according to actual needs.

[0026] In some embodiments, the outlet end of the hot water supply pipe 8 can be equipped with a filter structure according to actual needs. The filter structure is preferably a commercially available filter or a multi-layer graphene filter layer, which is used to purify water quality and improve water quality. The thickness of the graphene filter layer is 2-6mm.

[0027] To achieve intelligent operation, the heat circulation pump 5, heating module 7, liquid level sensor 10, temperature sensor 11, municipal water supply control valve 12, domestic hot water pressure detector 9, and domestic hot water control valve are connected to the controller (using a microcontroller, PLC, etc.). The controller controls the opening and closing, opening degree, and / or speed of the heat circulation pump 5, heating module 7, municipal water supply control valve 12, and domestic hot water control valve. To achieve remote control, the controller can communicate bidirectionally with the client (smartphone, tablet, etc.) via Bluetooth module, 4G, or 5G.

[0028] Heating module 7 is an AC / DC dual electric heating module. Preferably, heating module 7 is an electric heater.

[0029] The household photovoltaic water heating system of this utility model can be either integrated or split-type. Integrated means that both the solar PVT integrated panel 1 and the water tank 4 are outdoors. Split-type means that the water tank 4 is indoors, while the solar PVT integrated panel 1 is outdoors.

[0030] The working principle of this utility model is as follows:

[0031] In use, the integrated solar PVT panel 1 absorbs solar energy and converts it into heat energy, which heats the antifreeze (preferably ethylene glycol) in the integrated solar PVT panel 1. The heated antifreeze is then pumped from the second solar thermal circulation pipe 3 into the spiral heat exchange pipe 6 by the heat circulation pump 5. The temperature of the antifreeze flowing out of the integrated solar PVT panel 1 is detected by the heat outlet temperature sensor 15 and transmitted to the controller for processing. The antifreeze in the spiral heat exchange pipe 6 can exchange heat with the tap water in the water tank 4. The antifreeze cools down and flows back to the integrated solar PVT panel 1 through the first solar thermal circulation pipe 2, while the tap water is heated to hot water. The domestic hot water pressure is detected. Device 9 detects the domestic hot water pressure and transmits the data to the controller for processing. A level sensor 10 monitors the water level in tank 4 in real time and transmits the data to the controller for processing. A temperature sensor 11 monitors the water temperature in tank 4 in real time and transmits the data to the controller for processing. Remote control is achieved through two-way communication between the controller and the client. The controller effectively controls the opening, closing, degree of opening, and / or speed of the circulation pump 5, heating module 7, municipal water supply control valve 12, and domestic hot water control valve. The municipal water supply control valve 12 replenishes tap water into tank 4. When hot water is needed, the domestic hot water control valve is opened to supply hot water. Simultaneously, the solar PVT integrated panel 1 absorbs sunlight and converts solar radiation energy into direct current (DC). This DC power is supplied to the DC heater via the MTTP maximum power tracking output control board (when it is cloudy or the temperature does not reach the set temperature).

[0032] The controller's control logic is as follows:

[0033] The controller receives water temperature data transmitted by temperature sensor 11 and compares it with the water temperature set value. When the water temperature in water tank 4 is lower than the water temperature set value, the controller controls the heat circulation pump 5 to start to provide heat exchange for water tank 4. However, when the outside temperature is too low and cannot guarantee heat exchange in the water tank, the controller starts the heating module 7 to provide heat for water tank 4.

[0034] The controller receives the water level data transmitted by the liquid level sensor 10 and compares it with the water level set value to analyze and determine whether water needs to be added. If so, the controller controls the municipal water supply control valve 12 to open, thereby adding tap water to the water tank 4.

[0035] The parts or structures not specifically described in this utility model can be made using existing technology or existing products, and will not be elaborated here.

[0036] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A household photovoltaic-thermal combined heat and water supply system, characterized in that, The system includes an integrated solar PVT panel, which is connected to a water tank via a first and a second solar thermal circulation pipe. The water tank contains a heating module and a spiral heat exchange pipe or a jacketed heat exchanger. One end of the spiral heat exchange pipe or the jacketed heat exchanger is connected to the first solar thermal circulation pipe, and the other end is connected to the second solar thermal circulation pipe. A hot water supply pipe is provided at the outlet of the water tank.

2. A household photovoltaic-thermal combined heat and water supply system according to claim 1, characterized in that, The inlet of the solar PVT integrated panel is connected to one end of the spiral heat exchanger tube through the first solar thermal heat circulation tube, and the outlet of the solar PVT integrated panel is connected to the other end of the spiral heat exchanger tube through the second solar thermal heat circulation tube.

3. A household photovoltaic-thermal combined heat and water supply system according to claim 1, characterized in that, A circulation pump is installed on the second photothermal heat circulation pipe.

4. A household photovoltaic-thermal combined heat and water supply system according to claim 1, characterized in that, The inner wall of the water tank is provided with an insulation layer with a thickness of 12-15mm.

5. A household photovoltaic-thermal combined heat and water supply system according to claim 3, characterized in that, The water tank is also equipped with a liquid level sensor, a temperature sensor, a municipal water supply control valve, and an air vent.

6. A household photovoltaic-thermal combined heat and water supply system according to claim 5, characterized in that, The household photovoltaic-thermal combined hot water system also includes a controller, which is connected to a circulating pump, a heating module, a liquid level sensor, a temperature sensor, and a municipal water supply control valve. The controller communicates bidirectionally with the client via Bluetooth, 4G, or 5G.

7. A household photovoltaic-thermal combined heat and water supply system according to claim 1, characterized in that, The household photovoltaic water heating system can be either integrated or split-type.

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