Low-energy-consumption house heating system based on solar energy

Abstract

The utility model discloses a low-energy-consumption house heating system based on solar energy, which comprises a photovoltaic photo-thermal device installed outdoors, a water interlayer of the photovoltaic photo-thermal device is connected with a heat storage water tank in series through a pipeline to form a heat storage circulation pipeline, and the low-energy-consumption house heating system is characterized in that the lower end of the heat storage water tank is further provided with a heat release water outlet; the heat release water outlet is connected with a heat release water pipe, the heat release water pipe is arranged in the house floor in a back-and-forth winding mode and connected back to the heat release water return port in the heat storage water tank, and a second power pump is installed on the heat release water pipe. By means of the unique indoor floor structure and the combination of the photovoltaic photo-thermal device, indoor heating and temperature rising in multiple modes can be achieved, heating requirements under various conditions can be better met, heat conversion and utilization of solar energy are more efficiently achieved, and house environment temperature control energy consumption is reduced.

Description

Technical Field

[0001] This utility model relates to the field of low-energy building indoor temperature control technology, and in particular to a low-energy house heating system based on solar energy. Background Technology

[0002] With rapid socio-economic development and continuous social progress, energy conservation has become a social consensus. Traditional heating systems, reliant on fossil fuels such as coal, have exposed drawbacks such as enormous energy consumption and severe pollution, making them unsuitable for the demands of modern development. Among numerous renewable energy sources, solar energy stands out due to its wide availability, clean and pollution-free operation, and sustainable supply. Photovoltaic power generation technology, as a clean and renewable energy utilization method, has been widely applied in the building sector in recent years. Traditional photovoltaic power generation systems primarily convert solar energy into electricity, while unused heat energy is often lost through radiators or natural convection, resulting in low energy efficiency. To improve the overall energy efficiency of photovoltaic power generation systems, researchers have proposed photovoltaic-thermal (PVT) technology, which integrates heat exchangers on the back of photovoltaic modules to use the generated heat energy for building heating or hot water supply. However, existing PVT systems typically heat water and then directly deliver it to a hot water tank for domestic hot water backup, resulting in low heat utilization efficiency and a significant waste of solar heat.

[0003] Temperature control is a core factor in improving indoor living comfort. Geothermal systems are a common method for indoor temperature control, but conventional geothermal systems use electric heating films, which consume a significant amount of electricity. Therefore, the applicant considers that in areas with large temperature differences between day and night and a need for indoor temperature control at night, hot water obtained through a PVT system can be introduced into the geothermal system to better utilize solar energy for indoor temperature control and reduce energy consumption for temperature control. Utility Model Content

[0004] In view of the shortcomings of the prior art, the technical problem to be solved by this utility model is: how to provide a low-energy-consumption house heating system based on solar energy that can better utilize solar energy to control the temperature of the house's interior environment and reduce the energy consumption of house temperature control.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A low-energy-consumption house heating system based on solar energy includes an outdoor photovoltaic thermal device. The photovoltaic thermal device includes a photovoltaic panel, the power output end of which is connected to a storage battery. A water jacket is provided on the lower surface of the photovoltaic panel. The water jacket is connected in series with a hot water storage tank via pipes to form a heat storage circulation pipeline. A first power pump is provided at the outlet of the hot water storage tank in the heat storage circulation pipeline. The system is characterized in that a heat release outlet is also provided at the lower end of the hot water storage tank. A hot water release pipe is connected to the heat release outlet. The hot water release pipe is arranged back and forth inside the house floor and connects back to the heat release return outlet on the hot water storage tank. A second power pump is installed on the hot water release pipe.

[0007] In this way, the photovoltaic thermal system can provide solar power for the battery and solar hot water for the hot water storage tank. At the same time, when there is a need to raise the temperature inside the house, the second power pump can be turned on to allow the hot water in the storage tank to heat the floor of the house, thereby raising the temperature of the interior environment and reducing the energy consumption for house temperature control.

[0008] Furthermore, the hot water storage tank is also connected to an external hot water pipe for domestic use.

[0009] In this way, the hot water storage tank can provide hot water for residents' daily use at the same time.

[0010] Furthermore, the heat storage circulation pipeline is connected to an inlet pipe with a switch valve on the pipe located between the first power pump and the water jacket, and the inlet pipe is connected to the municipal pipe network.

[0011] In this way, water can be supplied to the water jacket for heating, and water can be replenished to the hot water storage tank.

[0012] Furthermore, a phase change material layer is installed inside the floor of the house, and the phase change temperature of the phase change material layer is consistent with the comfortable indoor temperature.

[0013] In this way, when the indoor temperature reaches a comfortable temperature and heating is not required, the excess heat from the hot water pipe can be converted into phase change energy through the phase change of the phase change material and stored in the phase change material layer. When the indoor temperature is lower than the comfortable temperature, the phase change of the phase change material layer can be used to release energy, thus achieving better temperature control.

[0014] Furthermore, airflow ducts are horizontally coiled around the floor of the house, with fans installed inside the ducts. The air outlets of the ducts are located below the inner side wall of the house, and the hot water pipe is inserted and installed inside the airflow ducts.

[0015] This is because while the phase change material layer can store excess heat, it can cause a lag in the indoor temperature control response. With this airflow duct setup, when the indoor temperature is below the comfortable ambient temperature and temperature control is needed, the fan can be turned on simultaneously with the second power pump. The hot water pipe directly exchanges heat with the airflow in the airflow duct, and hot air is blown out from the airflow duct outlet, quickly achieving indoor temperature control. Once the indoor temperature reaches the comfortable ambient temperature, the fan can be turned off, allowing the heat from the hot water pipe to accumulate in the phase change material layer. Once the phase change material layer is fully heated and its temperature rises, the second power pump can be turned off, ceasing heat input to the floor. By incorporating airflow channels into the heated floor and utilizing forced convection to accelerate the heat exchange rate of the radiant floor heating system, the heat storage and release process of the floor can be accelerated, improving heating flexibility. Furthermore, the convection-radiation coupled heating technology combines the comfort of radiant heating with the efficiency of convection heating, significantly improving heating performance.

[0016] Furthermore, the air return vent of the airflow duct is installed on the upper part of the inner wall of the building.

[0017] This better corresponds to the rising of hot indoor air and more efficiently controls the increase in indoor temperature.

[0018] Furthermore, an electric heating film is horizontally laid inside the floor, and the electric heating film and the power output terminal of the battery are connected to form a power supply circuit.

[0019] In this way, the solar power generated by the photovoltaic thermal device can be used to heat the floor, assisting in indoor temperature control and improving the response rate of indoor temperature control. The installed electric heating film radiant heating emits infrared rays directly into the room through the floor surface, allowing people and objects to absorb heat and providing a comfortable feeling. Convection heating, on the other hand, uses airflow to quickly transfer heat to every corner of the room, improving heating efficiency.

[0020] Furthermore, the heating film includes a shallow heating film located in the floor above the hot water pipe and a deep heating film located in the floor below the hot water pipe.

[0021] In this way, when rapid temperature control is needed indoors, the shallow heating film can be activated to assist in heating and quickly raise the indoor temperature. Once the indoor temperature is comfortable, the shallow heating film can be turned off, and the deep heating film can be activated for steady-state heating and heat storage. Excess electrical energy is converted and stored in the phase change material layer and slowly released as heat to keep the room warm. Therefore, indoor heating control can be achieved more flexibly.

[0022] In summary, this utility model, through its unique indoor floor structure combined with a photovoltaic thermal device, can achieve multiple methods of indoor heating and temperature rise, better meet heating needs in various situations, more efficiently realize the thermal conversion and utilization of solar energy, and reduce energy consumption for indoor temperature control. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the preferred embodiment of the present invention.

[0024] Figure 2 for Figure 1 A magnified structural diagram of the floor of a single house in China.

[0025] Figure 3 This is a top view of the base plate structure. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to specific embodiments.

[0027] Optimal Implementation: See Figure 1-3 As shown, a low-energy-consumption house heating system based on solar energy includes an outdoor photovoltaic thermal device. The photovoltaic thermal device includes a photovoltaic panel 1, the power output terminal of which is connected to a battery 2. A water jacket 3 is provided on the lower surface of the photovoltaic panel. The water jacket is connected in series with a hot water storage tank 4 to form a heat storage circulation pipeline 5. A first power pump 6 is provided at the outlet of the hot water storage tank in the heat storage circulation pipeline 5. The system is characterized in that a heat release outlet is also provided at the lower end of the hot water storage tank 4. A hot water release pipe 7 is connected to the heat release outlet. The hot water release pipe 7 is arranged back and forth inside the house floor 12 and connects back to the heat release return outlet on the hot water storage tank 4. A second power pump 8 is installed on the hot water release pipe.

[0028] In this way, the photovoltaic thermal system can provide solar power for the battery and solar hot water for the hot water storage tank. At the same time, when there is a need to raise the temperature inside the house, the second power pump can be turned on to allow the hot water in the storage tank to heat the floor of the house, thereby raising the temperature of the interior environment and reducing the energy consumption for house temperature control.

[0029] Among them, the hot water storage tank 4 is also connected to a domestic hot water pipe 9.

[0030] In this way, the hot water storage tank can provide hot water for residents' daily use at the same time.

[0031] The heat storage circulation pipeline 5 is connected to an inlet pipe 10 with a switch valve, which is located between the first power pump 6 and the water jacket 3. The inlet pipe 10 is connected to the municipal pipe network.

[0032] In this way, water can be supplied to the water jacket for heating, and water can be replenished to the hot water storage tank.

[0033] The floor 12 also contains a phase change material layer 11, the phase change temperature of which is consistent with the indoor comfort temperature.

[0034] In this way, when the indoor temperature reaches a comfortable level and heating is not required, the excess heat from the hot water pipe can be converted into phase change energy through the phase change of the phase change material and stored in the phase change material layer. When the indoor temperature drops below the comfortable level, the phase change of the phase change material layer is used to release the energy, thus achieving better temperature control. In implementation, the phase change material layer 11 is made of phase change mortar, which is existing technology and will not be described in detail here.

[0035] The floor 12 of the house is also equipped with a horizontally coiled airflow duct 13. A fan 14 is installed at the air outlet of the airflow duct 13. The air outlet of the airflow duct is located at the lower part of the inner side wall of the house. The hot water pipe 7 is inserted into the airflow duct 13.

[0036] This is because while the phase change material layer can store excess heat, it can cause a lag in the indoor temperature control response. With this airflow duct setup, when the indoor temperature is below the comfortable ambient temperature and temperature control is needed, the fan can be turned on simultaneously with the second power pump. The hot water pipe directly exchanges heat with the airflow in the airflow duct, and hot air is blown out from the airflow duct outlet, quickly achieving indoor temperature control. Once the indoor temperature reaches the comfortable ambient temperature, the fan can be turned off, allowing the heat from the hot water pipe to accumulate in the phase change material layer. Once the phase change material layer is fully heated and its temperature rises, the second power pump can be turned off, ceasing heat input to the floor. By incorporating airflow channels into the heated floor and utilizing forced convection to accelerate the heat exchange rate of the radiant floor heating system, the heat storage and release process of the floor can be accelerated, improving heating flexibility. Furthermore, the convection-radiation coupled heating technology combines the comfort of radiant heating with the efficiency of convection heating, significantly improving heating performance.

[0037] The air return vent 15 of the airflow duct is installed on the upper part of the inner wall of the building.

[0038] This better corresponds to the rising of hot indoor air and more efficiently controls the increase in indoor temperature.

[0039] The floor 12 is also horizontally laid with an electric heating film, which is connected to the power output terminal of the battery 2 to form a power supply circuit.

[0040] In this way, the solar power generated by the photovoltaic thermal device can be used to heat the floor, assisting in indoor temperature control and improving the response rate of indoor temperature control. The installed electric heating film radiant heating emits infrared rays directly into the room through the floor surface, allowing people and objects to absorb heat and providing a comfortable feeling. Convection heating, on the other hand, uses airflow to quickly transfer heat to every corner of the room, improving heating efficiency.

[0041] The electric heating film includes a shallow electric heating film 16 located in the floor above the hot water pipe and a deep electric heating film 17 located in the floor below the hot water pipe.

[0042] In this way, when rapid temperature control is needed indoors, the shallow heating film can be activated to assist in heating and quickly raise the indoor temperature. Once the indoor temperature is comfortable, the shallow heating film can be turned off, and the deep heating film can be activated for steady-state heating and heat storage. Excess electrical energy is converted and stored in the phase change material layer and slowly released as heat to keep the room warm. Therefore, indoor heating control can be achieved more flexibly.

Claims

1. A low-energy-consumption house heating system based on solar energy, comprising an outdoor photovoltaic thermal device, the photovoltaic thermal device including a photovoltaic panel, the power output terminal of the photovoltaic panel connected to a storage battery, a water jacket disposed on the lower surface of the photovoltaic panel, the water jacket being connected in series with a hot water storage tank via pipes to form a heat storage circulation pipeline, a first power pump disposed at the outlet of the hot water storage tank in the heat storage circulation pipeline, characterized in that, The lower end of the hot water storage tank is also equipped with a heat release outlet, from which a hot water release pipe is connected. The hot water release pipe is coiled back and forth inside the house floor and connects back to the heat release return outlet on the hot water storage tank. A second power pump is installed on the hot water release pipe.

2. The low-energy-consumption house heating system based on solar energy as described in claim 1, characterized in that, The hot water storage tank is also connected to an external hot water pipe for domestic use.

3. The low-energy-consumption house heating system based on solar energy as described in claim 1, characterized in that, The heat storage circulation pipeline is also connected to an inlet pipe with a switch valve on the pipe located between the first power pump and the water jacket. The inlet pipe is connected to the municipal pipe network.

4. The low-energy-consumption house heating system based on solar energy as described in claim 1, characterized in that, The floor of the house is also equipped with a phase change material layer, and the phase change temperature of the phase change material layer is consistent with the comfortable temperature of the indoor environment.

5. The low-energy-consumption house heating system based on solar energy as described in claim 4, characterized in that, The floor of the house is also equipped with horizontally coiled airflow ducts, with fans installed inside the airflow ducts. The airflow duct outlets are located at the lower part of the inner side wall of the house, and the hot water pipe is inserted and installed inside the airflow ducts.

6. The low-energy-consumption house heating system based on solar energy as described in claim 5, characterized in that, The air return vent of the airflow duct is installed on the upper part of the inner wall of the building.

7. The low-energy-consumption house heating system based on solar energy as described in claim 5, characterized in that, An electric heating film is also laid horizontally inside the floor, and the electric heating film is connected to the power output terminal of the battery to form a power supply circuit.

8. The low-energy-consumption house heating system based on solar energy as described in claim 7, characterized in that, The heating film includes a shallow heating film located in the floor above the hot water pipe and a deep heating film located in the floor below the hot water pipe.

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