Photovoltaic thermodynamic system

Abstract

The invention provides a photovoltaic thermodynamic system, which relates to the technical field of thermodynamic, and comprises a heat collection module, a heat exchange module, a heat storage module, a heating module, a domestic water circulation module, an electric heating module and a control module, the heat collection module is used for collecting solar heat; the heat storage module is used for exchanging heat energy with the heat collection module through the heat exchange plate and storing the heat energy; the heating module is used for obtaining the heat energy in the heat storage module and dissipating the heat for heating; the domestic water circulation module is used for exchanging heat energy in the heat storage module into domestic water; the electric heating module is connected with the heating module; the control module is connected with all the other modules and used for obtaining operation parameters of all the modules. Solar heat is collected through the heat collection module, transmitted to the heat storage module and subjected to heat exchange to the heating module and the domestic water circulation module, the operation states of all the modules are controlled according to operation parameters, and efficient solar energy collection is achieved.

Description

Technical Field

[0001] The present application relates to the field of thermal technology, and in particular to a photovoltaic thermal system. Background Art

[0002] Under the background of promoting energy revolution and striving to build a "clean, low-carbon, safe and efficient" modern energy system, China's new energy has been developing rapidly in recent years. At the same time, the problem of wind and solar power abandonment in some areas has become increasingly serious, especially in the "Northwest" region of my country. Due to the high proportion of coal-fired thermal power, poor conditions for peak-shaving power supply construction, and serious wind abandonment, the new energy consumption capacity of the power system has become a key factor restricting the development of renewable energy in my country. Therefore, building a heat storage system on the power generation side for peak regulation, using the power of the generator set to convert the power into heat energy to supplement the heat network, can achieve deep peak regulation of the power grid without reducing the output of coal-fired thermal power units, which is of great significance to improving the power system's renewable energy consumption capacity. Summary of the invention

[0003] The present application aims to solve one of the technical problems in the related art at least to some extent.

[0004] To this end, the first objective of the present application is to propose a photovoltaic thermal system.

[0005] The second objective of the present application is to provide an electronic device.

[0006] To achieve the above-mentioned purpose, the first embodiment of the present application proposes a photovoltaic thermal system, comprising:

[0007] Heat collection module, heat exchange module, heat storage module, heating module, domestic water circulation module, electric heating module, control module;

[0008] The heat collection module is connected to the first end of the heat exchange plate through a first circulation loop, and is used to collect solar heat;

[0009] The heat storage module is connected to the second end of the heat exchange plate through a second circulation loop, and is used to exchange heat energy with the heat collection module through the heat exchange plate and store heat energy;

[0010] The heating module is connected to the heat storage module through a third circulation loop, and is used to obtain heat energy in the heat storage module and emit heat for heating;

[0011] The domestic water circulation module is connected to the heat storage module via a fourth circulation loop, and is used to exchange heat energy in the heat storage module into domestic water;

[0012] The electric heating module is connected to the heating module;

[0013] The control module is connected to all other modules, and is used to obtain the operating parameters of each module and control the operating status of each module according to the operating parameters.

[0014] Optionally, the heat collection module includes a heat collector, an expansion tank, a heat collection circulation pump, a plurality of first sensor modules, a liquid replenishment tank, and a first liquid replenishment pump connected by the first circulation loop;

[0015] The fluid replenishment tank is connected to the first circulation loop through a fluid replenishment pipeline, and the first fluid replenishment pump is located in the fluid replenishment pipeline.

[0016] Optionally, the heat storage module includes a plurality of second sensor modules, a heat exchange circulation pump, a heat storage water tank, a second liquid replenishment pump, and a solenoid valve connected by the second circulation loop;

[0017] The second liquid replenishing pump is connected to the hot water storage tank through a liquid replenishing pipeline, and the solenoid valve is located in the liquid replenishing pipeline.

[0018] Optionally, the heating module includes a plurality of third sensor modules, a heating circulation pump, and a terminal device connected by the third circulation loop;

[0019] Part of the pipeline in the third circulation loop passes through the interior of the hot water storage tank;

[0020] The terminal device is used to exchange the heat of the liquid in the third circulation loop into the air.

[0021] Optionally, the domestic water circulation module includes a domestic water circulation pump connected by the fourth circulation loop, a plurality of fourth sensors, and a second expansion tank;

[0022] Part of the pipeline in the fourth circulation loop passes through the interior of the hot water storage tank;

[0023] The second liquid replenishing pump is connected to the fourth circulation loop through the liquid replenishing pipeline, and the fourth circulation loop outputs water through the water delivery pipeline.

[0024] Optionally, the first sensing module is used to obtain at least one of the following parameters in the first circulation loop: pipeline temperature, pressure, and flow rate;

[0025] The second sensor module is used to obtain at least one of the following parameters in the second circulation loop: pipeline temperature, hot water storage tank temperature, hot water storage tank water level, pressure, and flow rate;

[0026] The third sensor module is used to obtain at least one of the following parameters in the third circulation loop: pipeline temperature, pressure, and flow rate;

[0027] The fourth sensing module is used to obtain at least one of the following parameters of the fourth circulation loop: pipeline temperature, pressure, and flow rate.

[0028] Optionally, the control module is used to adjust the switching state of the first fluid infusion pump according to the pressure in the first circulation loop;

[0029] The control module is also used to adjust the operating states of the heat collection circulation pump and the heat exchange circulation pump according to the temperature of the hot water storage tank in the second circulation loop and the temperature of the pipe in the first circulation loop;

[0030] The control module is also used to control the operating state of the electric heating module according to the temperature of the hot water storage tank in the second circulation loop.

[0031] Optionally, the control module is used to control the operating state of the first fluid infusion pump according to the pressure in the first circulation loop;

[0032] The control module is also used to control the switching state of the electromagnetic switch according to the water level of the hot water storage tank in the second circulation loop.

[0033] Optionally, the control module is used to control the operating state of the heating circulation pump according to the water level of the hot water storage tank in the second circulation loop and the temperature of the hot water storage tank;

[0034] The control module is used to control the operating state of the domestic water circulation pump according to the pipeline temperature in the fourth circulation loop.

[0035] Optionally, the control module is used to control the operating state of the heating circulation pump according to the pipe temperature in the third circulation loop;

[0036] The control module is used to control the operating state of the heat exchange circulation pump according to the pipe temperature in the second circulation loop.

[0037] To achieve the above-mentioned purpose, a second aspect of the present application provides an electronic device, including: a processor, and a memory communicatively connected to the processor;

[0038] The memory stores computer-executable instructions;

[0039] The processor executes the computer-executable instructions stored in the memory to implement the system as described in any one of the first aspects.

[0040] The photovoltaic thermal system provided in the present application collects solar heat through a heat collection module and transmits it to a heat storage module and performs heat exchange to a heating module and a domestic water circulation module, and controls the operating status of each of the modules according to operating parameters, thereby achieving efficient solar energy collection.

[0041] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0043] Figure 1 A schematic diagram of the structure of a photovoltaic thermal system provided in an embodiment of the present application.

[0044] The figure includes: a heat collection module 10, a heat exchange module 20, a heat storage module 30, a heating module 40, a domestic water circulation module 50, an electric heating module 60, and a control module 70; a heat collector 11, an expansion tank 12, a heat collection circulation pump 13, and a first sensor module 14; a liquid replenishment tank 15, a first liquid replenishment pump 16; a second sensor module 31, a heat exchange circulation pump 32, and a hot water storage tank 33; a second liquid replenishment pump 34, and a solenoid valve 35; a third sensor module 41, a heating circulation pump 42, and a terminal device 43; a domestic water circulation pump 51, multiple fourth sensors 52, and a second expansion tank 53. DETAILED DESCRIPTION

[0045] Embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0046] The embodiment of the present application provides a photovoltaic thermal system, Figure 1 This is a schematic diagram of the structure of a photovoltaic thermal system provided in an embodiment of the present application. Figure 1 As shown, the system includes: a heat collection module 10, a heat exchange module 20, a heat storage module 30, a heating module 40, a domestic water circulation module 50, an electric heating module 60, and a control module 70;

[0047] The heat collection module 10 is connected to the first end of the heat exchange plate through a first circulation loop, and is used to collect solar heat;

[0048] The heat storage module 30 is connected to the second end of the heat exchange plate through a second circulation loop, and is used to exchange heat energy with the heat collection module 10 through the heat exchange plate and store heat energy;

[0049] The heating module 40 is connected to the heat storage module 30 through a third circulation loop, and is used to obtain heat energy in the heat storage module 30 and emit heat for heating;

[0050] The domestic water circulation module 50 is connected to the heat storage module 30 via a fourth circulation loop, and is used to exchange heat energy in the heat storage module 30 to domestic water;

[0051] The electric heating module 60 is connected to the heating module 40;

[0052] The control module 70 is connected to all other modules, and is used to obtain the operating parameters of each module and control the operating status of each module according to the operating parameters.

[0053] In this embodiment, the photovoltaic thermal system is constructed with a large flat panel collector as the heat collection device and antifreeze as the heat collection medium. The first circulation loop of the heat collection pipeline and the second circulation loop of the heat storage pipeline are physically isolated by a plate heat exchanger. The heat storage module 30 realizes the heat storage function of the system and also plays a buffering role. The hot water generated by the photovoltaic thermal system is divided into two uses, one is for room living water, such as washing hands, washing faces, and washing feet; the other is used for room heating. The two hydraulic pipelines are physically isolated by the coils built into the water storage tank to ensure their respective water quality.

[0054] Optionally, the heat collection module 10 includes a heat collector 11, an expansion tank 12, a heat collection circulation pump 13, a plurality of first sensor modules 14, a liquid replenishment tank 15, and a first liquid replenishment pump 16 connected by the first circulation loop;

[0055] The fluid replenishment tank is connected to the first circulation loop through a fluid replenishment pipeline, and the first fluid replenishment pump is located in the fluid replenishment pipeline.

[0056] Optionally, the heat storage module 30 includes a plurality of second sensor modules 31, a heat exchange circulation pump 32, a hot water storage tank 33, a second liquid replenishment pump 34, and a solenoid valve 35 connected by the second circulation loop;

[0057] The second liquid replenishing pump is connected to the hot water storage tank through a liquid replenishing pipeline, and the solenoid valve is located in the liquid replenishing pipeline.

[0058] In thermal systems, the expansion tank is an important auxiliary device used to deal with the volume expansion of liquid (usually water) when heated. The expansion tank is designed to absorb the volume increase of the liquid in the system due to the increase in temperature, thereby avoiding excessive pressure in the system and ensuring the safe and stable operation of the system.

[0059] Functions of the expansion tank 1. Absorb volume expansion: When water or other liquids in the system are heated, their volume expands. The expansion tank provides additional space to accommodate this part of the increased volume to prevent pipes or equipment from being damaged due to excessive pressure. 2. Pressure regulation: In a closed system, the expansion tank prevents excessive pressure by regulating the pressure in the system. When the liquid expands, part of the liquid enters the expansion tank, thereby reducing the pressure rise in the system. 3. Exhaust: In some designs, the expansion tank can also help exhaust air in the system. The presence of air will affect the efficiency and stability of the system, and the expansion tank can exhaust the air through the exhaust valve. 4. Constant pressure: In some systems, the expansion tank is also equipped with an inflation device (usually nitrogen) to maintain a constant pressure in the system. This design helps to keep the system pressure stable and prevent pressure fluctuations caused by temperature changes.

[0060] There are two main types of expansion tanks: 1. Open expansion tank: · This expansion tank is usually installed at the highest point of the system and is connected to the atmosphere. When the liquid in the system expands due to heat, part of the liquid will flow into the expansion tank, and the excess air will also be discharged through the expansion tank. · The advantage is that the structure is simple and easy to install and maintain; the disadvantage is that the heat loss is large, because the expansion tank is connected to the atmosphere, which will cause heat loss through evaporation and convection. 2. Closed expansion tank: · This expansion tank is isolated from the atmosphere and is usually equipped with a diaphragm or capsule to separate the gas (usually nitrogen) from the liquid. When the liquid in the system expands due to heat, the liquid compresses the gas in the diaphragm or capsule, and the gas buffers the expansion of the liquid through pre-pressurization. · The advantage is that it can reduce heat loss and improve the efficiency of the system; the disadvantage is that it is relatively complicated and requires regular inspection and maintenance.

[0061] Application scenarios of expansion tanks 1. Heating system: In hot water heating systems of residential and commercial buildings, expansion tanks are used to absorb the volume expansion of water in the system due to heating. 2. Boiler system: In boiler systems, expansion tanks help deal with the expansion of water when heated, preventing boilers and pipes from being subjected to excessive pressure. 3. Heat exchange system: In heat exchanger systems, expansion tanks are also used to deal with the problem of liquid expansion due to heat, ensuring stable operation of the system. 4. Industrial cooling system: In industrial cooling systems, expansion tanks can prevent pressure shocks caused by cooling water to the system when heated.

[0062] Optionally, the heating module 40 includes a plurality of third sensor modules 41, a heating circulation pump 42, and a terminal device 43 connected by the third circulation loop;

[0063] Part of the pipeline in the third circulation loop passes through the interior of the hot water storage tank;

[0064] The terminal device is used to exchange the heat of the liquid in the third circulation loop into the air.

[0065] In this embodiment, terminal units refer to devices installed inside buildings, directly contacting users, and used to adjust indoor temperature, humidity, and air quality. These devices are connected to the heating, ventilation, and air conditioning (HVAC) system to transfer heat or cold energy to the indoor environment, thereby achieving the purpose of heating, cooling, or ventilation.

[0066] Common heating system terminal equipment:

[0067] 1. Fan Coil Units (FCUs): · Function: Heat or cool the air through the internal heat exchanger (coil), and then send the treated air into the room through the fan. · Application scenarios: Widely used in residential, commercial buildings and public facilities, both for heating and cooling.

[0068] 2. Radiators: · Function: Heat is dissipated into the air by flowing hot water or steam inside. · Application scenarios: Commonly found in traditional heating systems, suitable for residential and small commercial buildings.

[0069] 3. Radiant Heating Systems: · Function: Heat is generated through hot water pipes or electric heating cables under the floor, and heat is radiated directly to the indoor surface. · Application scenarios: Suitable for occasions with high requirements for comfort, such as high-end residences, hotels, etc.

[0070] 4. Unit Heaters: · Function: Heat the air through the built-in heating element (such as electric heating wire or hot water coil) and blow the hot air out through the fan. · Application scenario: Suitable for heating large areas such as industrial plants and warehouses.

[0071] 5. Wall Heaters: · Function: Small heating equipment installed on the wall, usually using electric heating or gas heating. · Application scenario: Suitable for local heating in small rooms or offices.

[0072] 6. Ceiling or Floor Heaters: · Function: Heating equipment installed in the ceiling or floor, heating the indoor air by radiation or convection. · Application scenario: Suitable for places with high requirements on aesthetics, such as modern office buildings or residences.

[0073] 7. Heat Pumps: · Function: Extract heat from the outdoor environment through a refrigerant circulation system and transfer it to the indoor space. · Application scenarios: Suitable for buildings that require year-round heating and cooling, such as homes, schools, and hospitals.

[0074] 8. Convective Heaters: · Function: Transfer heat to the room by natural convection or forced convection. · Application: Suitable for small spaces that need to be heated quickly, such as bathrooms or corridors.

[0075] The following factors need to be considered when choosing the right terminal equipment: 1. Building type and area: Different types of buildings and space areas require different heating equipment. 2. Heat load demand: Choose the right equipment based on the room's insulation performance and heat load calculation. 3. Energy efficiency requirements: Choosing equipment with high energy efficiency can save energy and reduce operating costs. 4. Installation conditions: Consider the structural characteristics of the building and the installation space limitations. 5. Budget and maintenance costs: Initial investment costs and long-term maintenance costs are also important considerations. The role of terminal equipment 1. Adjust indoor temperature: Adjust indoor temperature by heating or cooling air to maintain a comfortable living or working environment. 2. Improve air quality: Some equipment also has air purification functions to improve indoor air quality. 3. Energy saving: Energy saving and emission reduction are achieved through intelligent control technology and high-efficiency equipment. 4. Aesthetics and concealment: Modern terminal equipment is more beautiful in design and can be integrated with interior decoration. By reasonably selecting and installing terminal equipment, the efficiency and comfort of the heating system can be significantly improved, while also meeting the specific needs of different application scenarios.

[0076] In a possible embodiment, a fan coil unit is selected as the terminal device. The fan coil unit (Fan Coil Unit, FCU) is a common terminal device, which is mainly used to adjust the indoor temperature and humidity. The functions of the fan coil unit in the heating circuit mainly include the following aspects: 1. Adjusting the indoor temperature: Heating: In winter or cold weather, the fan coil unit transfers heat to the air passing through the coil by passing hot water or steam through the heat exchanger in the coil, thereby heating the indoor air. Cooling: In summer or hot weather, the fan coil unit can use cold water or refrigerant to cool the air passing through the coil, thereby reducing the indoor temperature. 2. Air circulation and distribution: The fan built into the fan coil unit can evenly distribute the processed air into the room, ensuring that the temperature of the entire room is evenly distributed. Air circulation also helps to improve the indoor air quality by continuously introducing fresh air and exhausting dirty air. 3. Humidity control: In heating mode, the fan coil unit can help reduce the relative humidity in the room because the heated air can hold more moisture. ·In cooling mode, fan coils can remove moisture from the air by condensation, thereby reducing indoor humidity. 4. Noise control: ·Modern fan coil designs usually focus on reducing operating noise so that they do not cause noticeable interference to the living environment during operation. 5. Energy saving: ·Fan coils can adjust wind speed and water flow according to actual needs, thereby achieving on-demand heating or cooling and reducing energy waste. ·Some high-end fan coils are also equipped with variable frequency technology, which can automatically adjust the fan speed according to the indoor temperature to further improve energy efficiency.

[0077] The fan coil unit mainly consists of the following parts: 1. Coil (heat exchanger): · The inside of the coil passes hot water, cold water or refrigerant, and the heat or cold is transferred to the air passing through the coil through the heat exchanger. 2. Fan: · The fan draws air into and passes through the coil, so that the air exchanges heat with the medium in the coil, and then blows the treated air into the room. 3. Filter: · The filter can remove dust and particulate matter from the air and improve the indoor air quality. 4. Control device: · The control device is used to adjust the speed of the fan and the flow of the medium in the coil to achieve the desired temperature and humidity level.

[0078] Optionally, the domestic water circulation module 50 includes a domestic water circulation pump 51 connected by the fourth circulation loop, a plurality of fourth sensors 52, and a second expansion tank 53;

[0079] Part of the pipeline in the fourth circulation loop passes through the interior of the hot water storage tank;

[0080] The second liquid replenishing pump is connected to the fourth circulation loop through the liquid replenishing pipeline, and the fourth circulation loop outputs water through the water delivery pipeline.

[0081] Optionally, the first sensing module is used to obtain at least one of the following parameters in the first circulation loop: pipeline temperature, pressure, and flow rate;

[0082] The second sensor module is used to obtain at least one of the following parameters in the second circulation loop: pipeline temperature, hot water storage tank temperature, hot water storage tank water level, pressure, and flow rate;

[0083] The third sensor module is used to obtain at least one of the following parameters in the third circulation loop: pipeline temperature, pressure, and flow rate;

[0084] The fourth sensing module is used to obtain at least one of the following parameters of the fourth circulation loop: pipeline temperature, pressure, and flow rate.

[0085] Optionally, the control module 70 is used to adjust the on / off state of the first infusion pump according to the pressure in the first circulation loop;

[0086] In this embodiment, the switch of the first replenishment pump is associated with pressure. When it is detected that the pressure in the pipeline of the heat collection system is lower than the set pressure (such as 0.1MPa, adjustable), the first replenishment pump starts; when a certain amount of working fluid is injected, the pressure in the pipeline reaches the set pressure (such as 0.15MPa, adjustable), and the first replenishment pump stops. In a possible embodiment, the replenishment pump is integrated with the pressure switch, and this function can be automatically realized after the pump is powered on.

[0087] Optionally, the control module 70 is further used to adjust the operating states of the heat collection circulation pump and the heat exchange circulation pump according to the temperature of the hot water storage tank in the second circulation loop and the temperature of the pipe in the first circulation loop;

[0088] In this embodiment, in the heat collection cycle: the system inspects the collector outlet temperature T1 and the heat storage tank temperature T2. When T1-T2≥preset temperature difference (the temperature difference can be set through the touch screen), the heat collection circulation pump and the heat exchange circulation pump are started at the same time; when T1-T2<preset temperature difference (the temperature difference can be set through the touch screen), the heat collection circulation pump A and the heat exchange circulation pump E stop circulating at the same time. Optionally, the preset temperature difference is 8°C.

[0089] Optionally, the control module 70 is further used to control the operating state of the electric heating module 60 according to the temperature of the hot water storage tank in the second circulation loop.

[0090] Before setting the heating time period (which can be controlled by timing), the system detects the temperature T2 in the water storage tank. If it is lower than the set heating temperature (which can be set by yourself through the touch screen, for example, if the water temperature is 50°C, the heating start temperature can be set to 45°C), the electric heating module 60 starts automatically: when the set temperature is reached (which can be set by yourself, such as 50°C or 60°C), the electric heating module 60 automatically turns off.

[0091] Optionally, the control module 70 is used to control the operating state of the heating circulation pump according to the water level of the hot water storage tank in the second circulation loop and the temperature of the hot water storage tank;

[0092] In the heating cycle: within the set time period, when the water tank temperature T2 ≥ the preset temperature (adjustable, for example 40°C), and the water tank water level L> the preset water level (adjustable, for example 1), the heating circulation pump starts (optional modes: Mode 1, the heating circulation pump keeps running; Mode 2, the heating circulation pump stops for 5-10 minutes after running for 20 minutes). Multiple time periods can be set every day.

[0093] Optionally, the control module 70 is used to control the operating state of the domestic water circulation pump according to the pipe temperature in the fourth circulation loop.

[0094] Domestic water circulation: within the set time period, when the water supply pipe temperature T4 ≤ the preset temperature (adjustable, such as 20°C), the domestic water circulation pump will stop after circulating for a certain period of time (adjustable, such as 2 minutes), so as to maintain the temperature of the water supply pipe.

[0095] Optionally, the control module 70 is further used to control the switching state of the electromagnetic switch according to the water level of the hot water storage tank in the second circulation loop.

[0096] A water level sensor is arranged inside the hot water storage tank to detect the water level in the tank in real time. When the water level in the tank is lower than the set low water level (which can be set by the touch screen, such as 40% or 60%), the normally closed electromagnetic switch automatically opens; when the water level reaches the full water level, the electromagnetic switch automatically closes and the system stops filling water.

[0097] Optionally, the control module 70 is used to control the operating state of the heating circulation pump according to the pipe temperature in the third circulation loop;

[0098] Heating pipe (third circulation loop) antifreeze cycle: When the heating pipe temperature T3 ≤ preset temperature (adjustable, such as 8°C), the heating circulation pump starts; when the heating pipe temperature T3 > preset temperature (adjustable, such as 13°C), the heating circulation pump stops. (At this time, T2>T3 must be satisfied, and the water tank water level L≥1)

[0099] Optionally, the control module 70 is used to control the operating state of the heat exchange circulation pump according to the pipe temperature in the second circulation loop.

[0100] Heat exchanger pipe (second circulation loop) antifreeze cycle: When the heat exchange pipe temperature T5 ≤ preset temperature (adjustable, such as 8°C), the heat exchange circulation pump starts; when the heat exchange pipe temperature T5 > preset temperature (adjustable, such as 13°C), the heat exchange circulation pump stops. (At this time, T2>T5 must be satisfied, and the water tank water level L≥1)

[0101] Optionally, the system is also provided with a heating tape. In a heating system, a heating tape (also called an electric heating tape, an electric heating tape or a heating cable) is a device used for antifreeze protection and temperature maintenance of pipes, valves and other equipment. The heating tape provides constant heat to the pipe by means of electric heating to prevent the internal fluid from freezing or to maintain the fluid within a certain temperature range.

[0102] Basic composition of heating cables Heating cables usually consist of the following parts: 1. Heating element: generally conductive plastic or metal wire, which generates heat through electric current. 2. Insulation layer: covers the outside of the heating element to prevent current leakage and protect the heating element from the influence of the external environment. 3. Shielding layer: outside the insulation layer, usually metal braid or spiral winding, plays the role of grounding protection and can improve mechanical strength. 4. Outer sheath: the outermost protective material, wear-resistant and anti-aging, providing additional protection.

[0103] The working principle of the heating cable is to maintain the temperature of the fluid inside the pipe through electrical heating. When the heating cable is powered on, the heating element generates heat and transfers the heat to the outer wall of the pipe, thereby heating the fluid inside the pipe. The heating cable is usually equipped with a temperature sensor and a controller, which can automatically adjust the heating power according to the set temperature to ensure that the temperature of the fluid in the pipe remains within the preset range.

[0104] When the heating pipe temperature T3, water supply pipe temperature T4, heat exchange pipe temperature T5, and cold water pipe temperature T6 are ≤ the preset temperature (adjustable, for example 5°C), the heating belt starts; when the above temperatures reach the preset temperature (adjustable, for example 10°C), the heating belt is turned off.

[0105] In addition to the above embodiments, the present application also proposes an electronic device, comprising: a processor, and a memory communicatively connected to the processor; the memory stores computer-executable instructions; the processor executes the computer-executable instructions stored in the memory to implement the system provided by the above embodiments.

[0106] The collection, storage, use, processing, transmission, provision and disclosure of user personal information involved in this application are in compliance with relevant laws and regulations and do not violate public order and good morals.

[0107] It should be noted that personal information from users should be collected for legitimate and reasonable purposes and should not be shared or sold outside of these legitimate uses. In addition, such collection / sharing should be carried out after receiving the user's informed consent, including but not limited to notifying the user to read the user agreement / user notice and sign the agreement / authorization including authorization of relevant user information before the user uses the function. In addition, any necessary steps should be taken to protect and safeguard access to such personal information data and ensure that others who have access to personal information data comply with its privacy policy and procedures.

[0108] The present application is expected to provide an implementation scheme for users to selectively block the use or access of personal information data. That is, the present disclosure is expected to provide hardware and / or software to prevent or block access to such personal information data. Once the personal information data is no longer needed, the risk can be minimized by limiting data collection and deleting the data. In addition, when applicable, such personal information is de-identified to protect the privacy of the user.

[0109] In the description of the aforementioned embodiments, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0110] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0111] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, fragment or portion of code comprising one or more executable instructions for implementing the steps of a custom logical function or process, and the scope of the preferred embodiments of the present application includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in the reverse order depending on the functions involved, which should be understood by technicians in the technical field to which the embodiments of the present application belong.

[0112] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as an ordered list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by an instruction execution system, device or apparatus (such as a computer-based system, a system including a processor, or other system that can fetch instructions from an instruction execution system, device or apparatus and execute instructions), or in combination with these instruction execution systems, devices or apparatuses. For the purpose of this specification, "computer-readable medium" can be any device that can contain, store, communicate, propagate or transmit a program for use by an instruction execution system, device or apparatus, or in combination with these instruction execution systems, devices or apparatuses. More specific examples of computer-readable media (a non-exhaustive list) include the following: an electrical connection with one or more wires (electronic device), a portable computer disk box (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable and programmable read-only memory (EPROM or flash memory), a fiber optic device, and a portable compact disk read-only memory (CDROM). In addition, the computer-readable medium may even be paper or other suitable medium on which the program is printed, since the program may be obtained electronically, for example, by optically scanning the paper or other medium and then editing, interpreting or processing in other suitable ways if necessary, and then stored in a computer memory.

[0113] It should be understood that the various parts of the present application can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiments, multiple steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0114] A person skilled in the art may understand that all or part of the steps in the method for implementing the above-mentioned embodiment may be completed by instructing related hardware through a program, and the program may be stored in a computer-readable storage medium, which, when executed, includes one or a combination of the steps of the method embodiment.

[0115] In addition, each functional unit in each embodiment of the present application may be integrated into a processing module, or each unit may exist physically separately, or two or more units may be integrated into one module. The above-mentioned integrated module may be implemented in the form of hardware or in the form of a software functional module. If the integrated module is implemented in the form of a software functional module and sold or used as an independent product, it may also be stored in a computer-readable storage medium.

[0116] The storage medium mentioned above may be a read-only memory, a magnetic disk or an optical disk, etc. Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the present application. A person of ordinary skill in the art may change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A photovoltaic thermal system, characterized in that: include: Heat collection module, heat exchange module, heat storage module, heating module, domestic water circulation module, electric heating module, control module; The heat collection module is connected to the first end of the heat exchange plate through a first circulation loop, and is used to collect solar heat; The heat storage module is connected to the second end of the heat exchange plate through a second circulation loop, and is used to exchange heat energy with the heat collection module through the heat exchange plate and store heat energy; The heating module is connected to the heat storage module through a third circulation loop, and is used to obtain heat energy in the heat storage module and emit heat for heating; The domestic water circulation module is connected to the heat storage module via a fourth circulation loop, and is used to exchange heat energy in the heat storage module into domestic water; The electric heating module is connected to the heating module; The control module is connected to all other modules, and is used to obtain the operating parameters of each module and control the operating status of each module according to the operating parameters.

2. The system according to claim 1, characterized in that The heat collection module includes a heat collector, an expansion tank, a heat collection circulation pump, a plurality of first sensor modules, a liquid replenishment tank, and a first liquid replenishment pump connected by the first circulation loop; The fluid replenishment tank is connected to the first circulation loop through a fluid replenishment pipeline, and the first fluid replenishment pump is located in the fluid replenishment pipeline.

3. The system according to claim 2, characterized in that The heat storage module includes a plurality of second sensor modules, a heat exchange circulation pump, a hot water storage tank, a second liquid replenishment pump, and a solenoid valve connected by the second circulation loop; The second liquid replenishing pump is connected to the hot water storage tank through a liquid replenishing pipeline, and the solenoid valve is located in the liquid replenishing pipeline.

4. The system according to claim 3, characterized in that The heating module includes a plurality of third sensor modules, a heating circulation pump, and a terminal device connected by the third circulation loop; Part of the pipeline in the third circulation loop passes through the interior of the hot water storage tank; The terminal device is used to exchange the heat of the liquid in the third circulation loop into the air.

5. The system according to claim 4, characterized in that The domestic water circulation module includes a domestic water circulation pump connected by the fourth circulation loop, a plurality of fourth sensors, and a second expansion tank; Part of the pipeline in the fourth circulation loop passes through the interior of the hot water storage tank; The second liquid replenishing pump is connected to the fourth circulation loop through the liquid replenishing pipeline, and the fourth circulation loop outputs water through the water delivery pipeline.

6. The system according to claim 5, characterized in that The first sensor module is used to obtain at least one of the following parameters in the first circulation loop: pipeline temperature, pressure, and flow rate; The second sensor module is used to obtain at least one of the following parameters in the second circulation loop: pipeline temperature, hot water storage tank temperature, hot water storage tank water level, pressure, and flow rate; The third sensor module is used to obtain at least one of the following parameters in the third circulation loop: pipeline temperature, pressure, and flow rate; The fourth sensing module is used to obtain at least one of the following parameters of the fourth circulation loop: pipeline temperature, pressure, and flow rate.

7. The system according to claim 6, characterized in that The control module is used to adjust the switching state of the first fluid infusion pump according to the pressure in the first circulation loop; The control module is also used to adjust the operating states of the heat collection circulation pump and the heat exchange circulation pump according to the temperature of the hot water storage tank in the second circulation loop and the temperature of the pipe in the first circulation loop; The control module is also used to control the operating state of the electric heating module according to the temperature of the hot water storage tank in the second circulation loop.

8. The system according to claim 6, characterized in that The control module is used to control the operating state of the first fluid infusion pump according to the pressure in the first circulation loop; The control module is also used to control the switching state of the electromagnetic switch according to the water level of the hot water storage tank in the second circulation loop.

9. The system according to claim 6, characterized in that The control module is used to control the operating state of the heating circulation pump according to the water level of the hot water storage tank in the second circulation loop and the temperature of the hot water storage tank; The control module is used to control the operating state of the domestic water circulation pump according to the pipeline temperature in the fourth circulation loop.

10. The system according to claim 6, characterized in that The control module is used to control the operating state of the heating circulation pump according to the pipe temperature in the third circulation loop; The control module is used to control the operating state of the heat exchange circulation pump according to the pipe temperature in the second circulation loop.

Images