Zero-carbon photovoltaic drying system

Abstract

The application relates to the drying technical field, and particularly discloses a zero-carbon photovoltaic drying system, wherein an energy storage module is connected with a photovoltaic photo-thermal module and an air energy heat pump module, the air energy heat pump module is located in a heat control chamber, an air outlet of the photovoltaic photo-thermal module is connected with a first air inlet of a heat storage chamber, an air outlet of the heat storage chamber is connected with an air inlet of the heat control chamber, a first air outlet of the heat control chamber is connected with an air inlet of the photovoltaic photo-thermal module, a second air outlet of the heat control chamber is connected with an air inlet of a drying chamber, and an air outlet of the drying chamber is connected with a second air inlet of the heat storage chamber; the photo-thermal part comprises a micro-channel gravity heat pipe, the micro-channel gravity heat pipe is connected with a photovoltaic part, and the upper end of the micro-channel gravity heat pipe is located on an air duct of the photovoltaic photo-thermal module to perform convection heat exchange; the photovoltaic photo-thermal module is integrated and combined, so that daily light energy can be utilized, daily light heat can be stored through the heat storage chamber, the energy efficiency is optimized, and zero-carbon operation is realized.

Description

Technical Field

[0001] This invention relates to the field of drying technology, and more particularly to a zero-carbon photovoltaic drying system. Background Technology

[0002] In the field of drying technology, several problems exist: First, existing photovoltaic systems suffer from reduced overall power generation efficiency due to temperature variations under prolonged sunlight. Furthermore, these systems typically do not employ cooling management or passive evaporative cooling using absorbent materials, resulting in complete consumption of solar thermal energy and significant energy waste. Second, existing dual-ring drying systems are powered by 220V high-voltage electricity. When a photovoltaic system needs to be connected to the drying system for power, an inverter is required, but existing inverters are expensive and have low energy conversion efficiency. Third, existing air-source heat pumps have limitations in their energy utilization methods. The current solution for the single characteristic is to use a dual-ring solar thermal and air energy system for multi-energy complementarity. However, the solar collector in the collector + heat pump drying system can only play a role when drying is needed. When it is not turned on, the loss of solar thermal energy is large and the use is greatly affected by the weather. When the temperature is not high, electric auxiliary heating is used, which consumes a lot of electricity. Fourth, in remote areas without electricity or wireless, the drying system cannot be used normally. It is usually dried by direct sun drying or by burning fuels such as coal. These methods usually consume a lot of energy, emit a lot of carbon, and cause irreversible environmental pollution. Summary of the Invention

[0003] To address the aforementioned problems of wasted solar thermal energy, low energy conversion efficiency, and huge carbon emissions, this invention provides a zero-carbon photovoltaic drying system. It adopts an integrated photovoltaic and solar thermal module, which enables the utilization of daily solar energy and the storage of daily solar thermal energy through a heat storage chamber, thereby optimizing energy efficiency and achieving zero-carbon operation.

[0004] To solve the above-mentioned technical problems, the specific solution provided by the present invention is as follows:

[0005] A zero-carbon photovoltaic drying system includes a control module, a drying chamber, a heat storage chamber, a heat control chamber, a photovoltaic thermal module, an air source heat pump module, and an energy storage module;

[0006] The control module is connected to the thermal storage chamber, the photovoltaic thermal module, and the air source heat pump module. The energy storage module is connected to the photovoltaic thermal module and the air source heat pump module. The air source heat pump module is located in the thermal control chamber.

[0007] The air outlet of the photovoltaic thermal module is connected to the first air inlet of the heat storage chamber, the air outlet of the heat storage chamber is connected to the air inlet of the heat control chamber, the first air outlet of the heat control chamber is connected to the air inlet of the photovoltaic thermal module, the second air outlet of the heat control chamber is connected to the air inlet of the drying chamber, and the air outlet of the drying chamber is connected to the second air inlet of the heat storage chamber.

[0008] The photovoltaic-thermal module includes a photovoltaic part and a solar-thermal part. The solar-thermal part includes a microchannel gravity heat pipe. The microchannel gravity heat pipe is connected to the photovoltaic part, and the upper end of the microchannel gravity heat pipe is located on the air duct of the photovoltaic-thermal module for convective heat exchange.

[0009] In some implementations, the photothermal component further includes an insulation layer, with the lower end of the microchannel gravity heat pipe located between the photovoltaic component and the insulation layer, to insulate the heat between the microchannel gravity heat pipe and the photovoltaic component and optimize energy efficiency.

[0010] In some implementation schemes, the air duct of the photovoltaic thermal module is a single straight air duct, which avoids the problem of increased required heat collection air pressure caused by the multi-bend air duct design in traditional photovoltaic modules, thereby optimizing energy efficiency.

[0011] In some implementations, the control module includes a controller and a first temperature sensor and a temperature and humidity sensor connected to the controller;

[0012] The first temperature sensor is installed on the photovoltaic thermal module, and the temperature and humidity sensor is installed on the heat storage chamber. This allows the controller to control the drying mode of the drying system based on the first temperature sensor and the temperature and humidity sensor, thereby optimizing energy efficiency.

[0013] In some implementations, a first fan is provided between the first air outlet of the heat control chamber and the air inlet of the photovoltaic thermal module, and a second fan is provided between the second air outlet of the heat control chamber and the air inlet of the drying chamber, so as to improve the gas flow between the heat control chamber and the photovoltaic thermal module, and between the heat control chamber and the drying chamber, to form an air duct.

[0014] In some implementations, a heating circulation duct is formed between the photovoltaic thermal module, the heat storage chamber, the heat control chamber, and the first fan;

[0015] The heat storage chamber, heat control chamber, second fan, and drying chamber form a drying circulation duct, which realizes both heating and drying circulation, thereby improving drying efficiency and energy utilization efficiency.

[0016] In some implementations, the heat control chamber is provided with an air exchange port that communicates with the outside air. The air exchange port is equipped with a third fan to increase the speed at which outside air enters the heat control chamber, thereby improving operating efficiency.

[0017] In some implementations, the air source heat pump module includes a condenser, and the control module further includes a second temperature sensor connected to the controller. The second temperature sensor is disposed on the condenser, so that the controller can control the drying mode of the drying system according to the second temperature sensor, thereby achieving optimal energy efficiency.

[0018] In some implementations, the air source heat pump module further includes an evaporator, and a fourth fan is provided in the heat control chamber, the fourth fan being arranged adjacent to the evaporator;

[0019] The control module also includes a solar irradiance sensor connected to the controller, which allows the controller to control the drying mode of the drying system based on the solar irradiance sensor, thereby optimizing energy efficiency.

[0020] In some implementations, the drying chamber is made of translucent glass material, forming a passive solar room design, which can further improve the energy-saving effect during drying.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention provides a zero-carbon photovoltaic drying system, which adopts an integrated photovoltaic thermal module. The working fluid in the microchannel gravity heat pipe is heated into a gas by the photovoltaic part. The gas then undergoes convective heat exchange with the air duct of the photovoltaic thermal module to cool down into a liquid state. Finally, it flows down under its own liquid gravity and is vaporized by the photovoltaic part during the downward flow process. This cycle allows the utilization of daily solar energy, while the daily solar heat is stored in the heat storage chamber. A heating circulation air duct is formed between the heat storage chamber, the photovoltaic thermal module, and the heat control chamber. A drying circulation air duct is formed between the heat storage chamber, the heat control chamber, and the drying chamber, achieving the effect of drying and heating simultaneously, optimizing energy efficiency, and realizing zero-carbon operation. Attached Figure Description

[0022] Figure 1 This is a front structural view of a zero-carbon photovoltaic drying system provided in an embodiment of the present invention;

[0023] Figure 2 This is a structural side view of a zero-carbon photovoltaic drying system provided in an embodiment of the present invention;

[0024] Figure 3 This is a schematic diagram of the structure of the photovoltaic thermal module provided in an embodiment of the present invention;

[0025] Figure 4 for Figure 3 A schematic diagram of the transformation of the working fluid in the microchannel gravity heat pipe in section A during convective heat transfer;

[0026] Figure 5 A schematic diagram of the multi-bend air duct inside a traditional photovoltaic module;

[0027] Figure 6 This is a schematic diagram of a single straight air duct within a photovoltaic thermal module provided in an embodiment of the present invention;

[0028] Figure 7 This is a schematic diagram of the drying process using pure solar energy provided in an embodiment of the present invention;

[0029] Figure 8 This is a schematic diagram of the drying process using a solar-plus-air-energy mode provided in an embodiment of the present invention;

[0030] Figure 9 This is a schematic diagram of the air-energy drying mode provided in an embodiment of the present invention;

[0031] Figure 10 This is a schematic diagram of another solar-plus-air-energy drying mode provided in an embodiment of the present invention;

[0032] Figure 11 for Figure 10 The connection block diagram of the corresponding drying system.

[0033] 1-Control module; 11-Controller; 12-First temperature sensor; 13-Temperature and humidity sensor; 14-Second temperature sensor; 15-Solar irradiance sensor;

[0034] 2-Drying chamber;

[0035] 3-Heat storage chamber;

[0036] 4-Heat control chamber;

[0037] 5-Photovoltaic thermal module; 51-Photovoltaic section; 52-Solar thermal section; 521-Microchannel gravity heat pipe; 522-Insulation layer;

[0038] 6-Air source heat pump module; 61-Condenser; 62-Evaporator;

[0039] 7-Energy storage module;

[0040] 8-First fan;

[0041] 9-Second fan;

[0042] 10-Third fan;

[0043] 20 - Fourth fan. Detailed Implementation

[0044] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. The described embodiments are some, but not all, of the embodiments of the present invention.

[0045] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0046] For example, a zero-carbon photovoltaic drying system includes a control module, a drying chamber, a heat storage chamber, a heat control chamber, a photovoltaic thermal module, an air source heat pump module, and an energy storage module. The control module is connected to the heat storage chamber, the photovoltaic thermal module, and the air source heat pump module. The energy storage module is connected to the photovoltaic thermal module and the air source heat pump module. The air source heat pump module is located in the heat control chamber. The air outlet of the photovoltaic thermal module is connected to the first air inlet of the heat storage chamber. The air outlet of the heat storage chamber is connected to the air inlet of the heat control chamber. The first air outlet of the heat control chamber is connected to the air inlet of the photovoltaic thermal module. The second air outlet of the heat control chamber is connected to the air inlet of the drying chamber. The air outlet of the drying chamber is connected to the second air inlet of the heat storage chamber. The photovoltaic thermal module includes a photovoltaic part and a thermal part. The thermal part includes a microchannel gravity heat pipe. The microchannel gravity heat pipe is connected to the photovoltaic part, and the upper end of the microchannel gravity heat pipe is located on the air duct of the photovoltaic thermal module for convective heat exchange.

[0047] This embodiment provides a zero-carbon photovoltaic drying system that uses integrated photovoltaic and photothermal modules, enabling the utilization of daily solar energy and the storage of daily solar heat through a heat storage chamber, thereby optimizing energy efficiency and achieving zero-carbon operation.

[0048] Example 1:

[0049] like Figures 1-4 As shown, a zero-carbon photovoltaic drying system includes a control module 1, a drying chamber 2, a heat storage chamber 3, a heat control chamber 4, a photovoltaic thermal module 5, an air source heat pump module 6, and an energy storage module 7.

[0050] The control module 1 connects the heat storage chamber 3, the photovoltaic thermal module 5, and the air source heat pump module 6. The energy storage module 7 connects the photovoltaic thermal module 5 and the air source heat pump module 6. The air source heat pump module 6 is located in the heat control chamber 4. The control module 1 is used to control the start-up or stop operation of the heat storage chamber 3, the photovoltaic thermal module 5, and the air source heat pump module 6. It can be controlled manually or set to automatic control mode. In automatic control mode, it can be combined with the set start-up or stop operation conditions, such as light intensity or temperature. The energy storage module 7 connects the photovoltaic thermal module 5 and the air source heat pump module 6. The energy storage module 7 stores the energy generated by the photovoltaic thermal module 5 and is used to supply power to the air source heat pump module 6. The air source heat pump module 6 is located in the heat control chamber 4 and works with the drying chamber 2 to perform drying operations.

[0051] The air outlet of the photovoltaic thermal module 5 is connected to the first air inlet of the heat storage chamber 3, the air outlet of the heat storage chamber 3 is connected to the air inlet of the heat control chamber 4, the first air outlet of the heat control chamber 4 is connected to the air inlet of the photovoltaic thermal module 5, the second air outlet of the heat control chamber 4 is connected to the air inlet of the drying chamber 2, and the air outlet of the drying chamber 2 is connected to the second air inlet of the heat storage chamber 3.

[0052] As can be seen from the above, the heat storage chamber 3 has two air inlets, namely the first air inlet and the second air inlet. The first air inlet of the heat storage chamber 3 is used to establish a connection with the air outlet of the photovoltaic thermal module 5, so that the air in the photovoltaic thermal module 5 can enter the heat storage chamber 3 through the first air inlet of the heat storage chamber 3 to achieve the effect of heating the air in the heat storage chamber 3. The second air inlet of the heat storage chamber 3 is used to establish a connection with the air outlet of the drying chamber 2, so that the air in the drying chamber 2 can enter the heat storage chamber 3 through the second air inlet of the heat storage chamber 3 for heat exchange.

[0053] The photovoltaic thermal module 5 collects and utilizes daily sunlight and solar thermal energy, converting sunlight into electricity, which is then stored in the energy storage module 7 to power the air source heat pump module 6. Solar thermal energy is stored in the heat storage chamber 3 and used for drying operations. The heat control chamber 4 works in conjunction with the drying chamber 2 to regulate the required drying temperature, for example, by coordinating the heating cycle with the heat storage chamber 3 and the photovoltaic thermal module 5, and by coordinating the drying cycle with the heat storage chamber 3 and the drying chamber 2.

[0054] The photovoltaic-thermal module 5 includes a photovoltaic section 51 and a solar thermal section 52. The photovoltaic section 51 is connected to the energy storage module 7 and is used to convert daily sunlight into electrical energy and store it in the energy storage module 7. The solar thermal section 52 is used to collect the heat from the photovoltaic section 51 under sunlight. The solar thermal section 52 includes a microchannel gravity heat pipe 521, which is connected to the photovoltaic section 51, and the upper end of the microchannel gravity heat pipe 521 is located on the air duct of the photovoltaic-thermal module 5 for convective heat exchange.

[0055] The photovoltaic and solar thermal module 5 can utilize lightweight batteries currently on the market, greatly reducing the weight and cost of the entire drying system. Furthermore, due to its modular design, it can be quickly integrated into systems on the market, improving overall energy efficiency.

[0056] In one application scenario, the lower end of the microchannel gravity heat pipe 521 is attached to the photovoltaic component 51. The heat from the photovoltaic component 51 heats the lower end of the microchannel gravity heat pipe 521, causing the working fluid inside the microchannel gravity heat pipe 521 to be heated and turn into a gaseous state, rising to the upper end of the microchannel gravity heat pipe 521. Since the upper end of the microchannel gravity heat pipe 521 is located on the air duct of the photovoltaic thermal module 5, it can exchange heat with the air in the air duct of the photovoltaic thermal module 5 through convection. The gaseous state after the convection heat exchange is cooled into a liquid state, and finally flows down due to its own liquid gravity. During the downward flow, it is heated again by the heat from the photovoltaic component 51, and then vaporized again, thus creating a cycle.

[0057] The air duct of the photovoltaic thermal module 5 refers to the path through which air enters the interior of the photovoltaic thermal module 5 through the air inlet and is then discharged through the air outlet of the photovoltaic thermal module 5. After entering the interior of the photovoltaic thermal module 5 through the air inlet, the air undergoes convective heat exchange with the upper end of the microchannel gravity heat pipe 521 to heat the air. After heating the air, it is discharged through the air outlet of the photovoltaic thermal module 5 to the first air inlet of the heat storage chamber 3, where the heat is stored.

[0058] When drying is required, air is discharged from the outlet of the heat storage chamber 3 to the inlet of the heat control chamber 4, and then from the first outlet of the heat control chamber 4 to the inlet of the photovoltaic thermal module 5. Subsequently, the air is discharged from the outlet of the photovoltaic thermal module 5 back to the first inlet of the heat storage chamber 3, thus forming a heating circulation air duct, which continuously passes through the photovoltaic thermal module 5 for convective heat exchange. At the same time, after air is discharged from the outlet of the heat storage chamber 3 to the inlet of the heat control chamber 4, it is also discharged from the second outlet of the heat control chamber 4 to the inlet of the drying chamber 2 to dry the material in the drying chamber 2. Then, the material is discharged from the outlet of the drying chamber 2 back to the heat control chamber 4 for convective heat exchange, thus forming a drying circulation air duct.

[0059] As can be seen from the heating circulation duct and drying circulation duct formed above, both involve a heat control chamber 4. Therefore, when the temperature in the heat storage chamber 3 cannot meet the drying requirements or the temperature of the photovoltaic thermal module 5 cannot meet the heating circulation requirements, the air source heat pump system in the heat control chamber 4 can be started to supply heat and realize drying operations under different modes.

[0060] For the outer frame of drying chamber 2, light-transmitting glass material can be used, i.e., passive solar room design, which can further improve the energy-saving effect during drying.

[0061] This example provides a zero-carbon photovoltaic drying system that utilizes an integrated photovoltaic thermal module 5. The working fluid within the microchannel gravity heat pipe 521 is heated to a gas by the photovoltaic section 51. The gas then undergoes convective heat exchange with the air duct of the photovoltaic thermal module 5, cooling to a liquid state. Finally, it flows downwards under its own gravity, where it is vaporized again by the photovoltaic section 51. This cycle allows for the utilization of daily solar energy, while the solar heat is stored in the heat storage chamber 3. A heating circulation duct is formed between the heat storage chamber 3, the photovoltaic thermal module 5, and the heat control chamber 4. A drying circulation duct is formed between the heat storage chamber 3, the heat control chamber 4, and the drying chamber 2, achieving simultaneous drying and heating. This optimizes energy efficiency and can meet the normal drying needs of resource-rich areas with abundant sunshine. Furthermore, by integrating this drying system with broadcasting, it can function as a small grid-connected power station or an off-grid system, achieving zero-carbon operation. Additionally, this drying system can be connected to a heating system to provide heating.

[0062] Example 2:

[0063] like Figures 3-6 As shown, the solar thermal part 52 also includes a heat insulation layer 522. The lower end of the microchannel gravity heat pipe 521 is located between the photovoltaic part 51 and the heat insulation layer 522, which insulates the heat between the microchannel gravity heat pipe 521 and the photovoltaic part 51 and optimizes energy efficiency.

[0064] The lower end of the microchannel gravity heat pipe 521 is in close contact with the photovoltaic part 51. The photovoltaic part 51 heats the lower end of the microchannel gravity heat pipe 521, causing the working fluid inside the microchannel gravity heat pipe 521 to be heated and turn into a gaseous state, rising to the upper end of the microchannel gravity heat pipe 521. During this process, the heat insulation layer 522 is used to keep the heat between the microchannel gravity heat pipe 521 and the photovoltaic part 51 warm, thus optimizing energy efficiency. Of course, the heat insulation layer 522 can also be extended to the upper end of the microchannel gravity heat pipe 521, and the air duct of the photovoltaic thermal module 5 can be located between the photovoltaic part 51 and the heat insulation layer 522 to keep the convective heat transfer process warm.

[0065] refer to Figure 5 and Figure 6 The photovoltaic thermal module 5 features a single, straight air duct, avoiding the problem of increased required heat collection air pressure caused by the multi-bend air duct design in traditional photovoltaic modules, thus optimizing energy efficiency. Traditional air ducts employ a multi-bend design, which extends heat transfer time by adding airflow paths to maximize heat transfer to the collector air. However, this requires increasing air pressure to boost airflow, resulting in significant energy loss. In contrast, this example uses a single, straight air duct within the photovoltaic thermal module, eliminating the need to increase airflow by raising air pressure. Therefore, it effectively reduces energy loss and improves energy utilization efficiency.

[0066] Example 3:

[0067] refer to Figure 1 The control module 1 includes a controller 11 and a first temperature sensor 12 and a temperature and humidity sensor 13 connected to the controller 11. The first temperature sensor 12 is installed on the photovoltaic thermal module 5, and the temperature and humidity sensor 13 is installed on the heat storage chamber 3, so that the controller 11 can control the drying mode of the drying system according to the first temperature sensor 12 and the temperature and humidity sensor 13, so that the energy efficiency can reach the optimal state.

[0068] An automated control mode is achieved by setting a first temperature sensor 12 and a temperature and humidity sensor 13. For example, the temperature of the photovoltaic thermal module 5 is collected by the first temperature sensor 12 and heated in the absence of sunlight. When the temperature exceeds the set value, the heat storage chamber 3 is opened to store the generated daily solar heat. When the temperature of the photovoltaic thermal module 5 is lower than the set value by the first temperature sensor 12, the heat storage chamber 3 is closed and the absence of sunlight continues. This cycle provides heat to the heat storage chamber 3. Therefore, the heat storage chamber 3 can store heat for a long time.

[0069] A first fan 8 is installed between the first air outlet of the heat control chamber 4 and the air inlet of the photovoltaic thermal module 5, and a second fan 9 is installed between the second air outlet of the heat control chamber 4 and the air inlet of the drying chamber 2, so as to improve the gas flow between the heat control chamber 4 and the photovoltaic thermal module 5, and between the heat control chamber 4 and the drying chamber 2, so as to form an air duct.

[0070] like Figure 7 As shown, when the first temperature sensor 12 detects that the temperature of the photovoltaic thermal module 5 exceeds the set value and the temperature and humidity sensor 13 detects that the temperature of the heat storage chamber 3 is below the set humidity and within the set temperature range, the first fan 8 and the second fan 9 are turned on. Air enters the heat storage chamber 3 through the photovoltaic thermal module 5, and then enters the heat control chamber 4 and the drying chamber 2 from the heat storage chamber 3 to dry the material in the drying chamber 2, realizing a drying cycle. At this time, the drying chamber 2 is in a closed-loop operation state. At the same time, after the air enters the heat control chamber 4 through the heat storage chamber 3, it also returns to the photovoltaic thermal module 5 through the heat control chamber 4 for convection heat exchange, realizing a heating cycle.

[0071] As can be seen from the above drying mode, a heating circulation duct is formed between the photovoltaic thermal module 5, the heat storage chamber 3, the heat control chamber 4 and the first fan 8, which continuously circulates and heats the air; a drying circulation duct is formed between the heat storage chamber 3, the heat control chamber 4, the second fan 9 and the drying chamber 2, which continuously dries the material in the drying chamber 2, realizing heating circulation while drying circulation, improving drying efficiency and energy utilization efficiency, which belongs to the drying operation state of open-loop pure solar energy mode.

[0072] Example 4:

[0073] like Figure 2 As shown, the heat control chamber 4 is provided with an air exchange port that communicates with the outside air. The air exchange port is equipped with a third fan 10, which increases the speed at which the outside air enters the heat control chamber 4, thereby improving the operating efficiency.

[0074] refer to Figure 7 Based on the pure solar energy mode operation of the drying system using the photovoltaic thermal module 5 for heating and circulation as described in Example 3, when the temperature and humidity sensor 13 detects that the temperature of the heat storage chamber 3 exceeds the set required temperature range, the third fan 10 at the ventilation port can be turned on to introduce relatively low-temperature outdoor air for mixing. That is, under normal circumstances, the temperature of the outdoor air is lower than the temperature inside the heat control chamber 4 at this time. After the relatively low-temperature outdoor air is introduced for mixing, the temperature inside the heat storage chamber 3 is reduced to the required temperature range. When the temperature and humidity sensor 13 detects that the humidity inside the heat control chamber 4 is higher than the set humidity value, the third fan 10 at the ventilation port is turned on to reduce the humidity inside the heat control chamber 4. When the humidity inside the heat control chamber 4 reaches below the set humidity value, the third fan 10 at the ventilation port can be turned off to continue the closed-loop humidification operation.

[0075] Understandably, a range of values ​​can be set for the temperature and humidity inside the heat storage chamber 3, such as a minimum operating temperature of A, a maximum operating temperature of A1, and an operating humidity of B. When the temperature and humidity sensor 13 detects that the temperature inside the heat storage chamber 3 is higher than A but lower than A1, and the humidity is lower than B, the operating mode in Embodiment 3 is activated. That is, a heating circulation duct is formed between the photovoltaic thermal module 5, the heat storage chamber 3, the heat control chamber 4, and the first fan 8 to continuously circulate and heat the air; a drying circulation duct is formed between the heat storage chamber 3, the heat control chamber 4, the second fan 9, and the drying chamber 2 to continuously dry the material in the drying chamber 2. When the temperature and humidity sensor 13 detects that the temperature inside the heat storage chamber 3 is higher than A1 or the humidity is higher than B, the third fan 10 is activated. After mixing with relatively low-temperature outdoor air introduced by the third fan 10, the temperature inside the heat storage chamber 3 is reduced to the required temperature range or the humidity inside the heat control chamber 4 is reduced to below the set humidity value. Then, the third fan 10 is turned off, and the closed-loop humidification operation continues.

[0076] Example 5:

[0077] like Figure 1 and Figure 8 As shown, the air source heat pump module 6 includes a condenser 61, and the control module 1 also includes a second temperature sensor 14 connected to the controller 11. The second temperature sensor 14 is installed on the condenser 61, so that the controller 11 can control the drying mode of the drying system according to the second temperature sensor 14, so that the energy efficiency can reach the optimal state.

[0078] When the temperature and humidity sensor 13 detects that the temperature of the heat storage chamber 3 is not within the set temperature range, the condenser 61 is turned on. The temperature of the condenser 61 is controlled by the second temperature sensor 14, so that when the temperature and humidity sensor 13 detects that the temperature of the heat storage chamber 3 is within the set temperature range, closed-loop humidification is performed. That is, a drying circulation air duct is formed between the heat storage chamber 3, the heat control chamber 4, the second fan 9 and the drying chamber 2, and the drying chamber 2 performs closed-loop humidification operation. When the temperature and humidity sensor 13 detects that the humidity is higher than the set humidity value, the third fan 10 is turned on. The third fan 10 introduces relatively low temperature outdoor air for mixing, so that the humidity in the heat control chamber 4 is lower than the set humidity value, reducing heat loss. This is the drying operation state of open-loop solar energy plus air energy mode.

[0079] Example 6:

[0080] like Figure 1 As shown, the air source heat pump module 6 also includes an evaporator 62, and a fourth fan 20 is installed in the heat control chamber 4. The fourth fan 20 is arranged adjacent to the evaporator 62. The control module 1 also includes a solar irradiance sensor 15 connected to the controller 11, so that the controller 11 can control the drying mode of the drying system according to the solar irradiance sensor 15, so that the energy efficiency can reach the optimal state.

[0081] Of course, a display screen can also be added to the outside of the heat control chamber 4 to display the monitoring data of each temperature sensor collected by the controller 11 in real time. By presenting the monitoring data in real time, users can be provided with real-time drying efficiency, power generation, heat generation, number of runs, etc., which can effectively monitor energy.

[0082] like Figure 9 As shown, when the temperature and humidity sensor 13 detects that the temperature of the heat storage chamber 3 is lower than the set temperature range, or the humidity is higher than the set humidity value, or the solar irradiance sensor 15 detects that the solar irradiance is lower than the power generation irradiance, the condenser 61 is started to heat and the evaporator 62 is started to cool and dehumidify to achieve the drying effect. At this time, the dehumidification circulation air duct is: heat storage chamber 3-evaporator 62-condenser 61-drying chamber 2-heat storage chamber 3, which belongs to the closed-loop pure air energy mode drying operation state.

[0083] like Figure 10 and Figure 11 As shown, when the temperature and humidity sensor 13 detects that the temperature of the heat storage chamber 3 is within the set temperature range, the air is heated by the photovoltaic thermal module 5 and the condenser 61, and cooled and dehumidified by the evaporator 62 to achieve the drying effect. At this time, the air energy dehumidification and drying cycle is: heat storage chamber 3 - evaporator 62 - condenser 61 - drying chamber 2 - heat storage chamber 3; the solar energy heating cycle is: second fan 9 - drying chamber 2 - heat storage chamber 3 - second fan 9, which belongs to the closed-loop solar energy plus air energy mode drying operation state.

[0084] In one application scenario, the first fan 8, the second fan 9, and the third fan 10 are all electrically controlled fans. The first fan 8, the second fan 9, and the third fan 10 are all connected to the controller 11 to achieve an automated drying effect.

[0085] Employing a multi-mode intelligent control system can ensure the quality of dried materials, such as guaranteeing the quality of agricultural products and reducing the loss of nutritional value, greatly improving drying efficiency and enhancing the system's energy utilization efficiency.

[0086] In summary, the zero-carbon photovoltaic drying system provided by this invention employs an integrated photovoltaic-thermal module. The working fluid within the microchannel gravity heat pipe is heated to a gaseous state by the photovoltaic component. This gas then undergoes convective heat exchange with the air duct of the photovoltaic-thermal module, cooling to a liquid state. Finally, it flows downwards under its own gravity, where it is vaporized again by the photovoltaic component. This cyclical process allows for the utilization of everyday solar energy, while the solar heat is stored in a heat storage chamber. A heating circulation duct is formed between the heat storage chamber, the photovoltaic-thermal module, and the heat control chamber. A drying circulation duct is formed between the heat storage chamber, the heat control chamber, and the drying chamber, achieving simultaneous drying and heating, optimizing energy efficiency, and realizing zero-carbon operation.

[0087] By setting up a controller to accurately monitor the temperature, humidity, and solar irradiance intensity at multiple points in the drying system, and by presenting the monitoring data in real time, users can be provided with real-time drying efficiency, power generation, heat generation, and number of runs. This enables effective energy monitoring. When users need to calculate electricity consumption on or off the grid, it can efficiently conduct electricity transactions. It is suitable for ordinary factories, large desert areas, and water-based photovoltaic systems.

[0088] The drying chamber, made of translucent glass, achieves a stable output temperature under closed-loop solar and air energy drying operation.

[0089] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0090] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0091] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

Claims

1. A zero-carbon photovoltaic drying system, characterized by, It comprises a control module (1), a drying chamber (2), a heat storage chamber (3), a heat control chamber (4), a photovoltaic and photo-thermal module (5), an air energy heat pump module (6) and an energy storage module (7). The control module (1) is connected with the heat storage chamber (3), the photovoltaic and photo-thermal module (5) and the air energy heat pump module (6), the energy storage module (7) is connected with the photovoltaic and photo-thermal module (5) and the air energy heat pump module (6), and the air energy heat pump module (6) is located in the heat control chamber (4). The air outlet of the photovoltaic and photo-thermal module (5) is connected with the first air inlet of the heat storage chamber (3), the air outlet of the heat storage chamber (3) is connected with the air inlet of the heat control chamber (4), the first air outlet of the heat control chamber (4) is connected with the air inlet of the photovoltaic and photo-thermal module (5), the second air outlet of the heat control chamber (4) is connected with the air inlet of the drying chamber (2), and the air outlet of the drying chamber (2) is connected with the second air inlet of the heat storage chamber (3). The photovoltaic and photo-thermal module (5) comprises a photovoltaic part (51) and a photo-thermal part (52), the photo-thermal part (52) comprises a micro-channel gravity heat pipe (521), the micro-channel gravity heat pipe (521) is connected with the photovoltaic part (51), and the upper end of the micro-channel gravity heat pipe (521) is located on the air duct of the photovoltaic and photo-thermal module (5) to perform convective heat exchange. The first air outlet of the heat control chamber (4) and the air inlet of the photovoltaic and photo-thermal module (5) are provided with a first fan (8), and the second air outlet of the heat control chamber (4) and the air inlet of the drying chamber (2) are provided with a second fan (9). The photovoltaic and photo-thermal module (5), the heat storage chamber (3), the heat control chamber (4) and the first fan (8) form a heating circulating air duct. The heat storage chamber (3), the heat control chamber (4), the second fan (9) and the drying chamber (2) form a drying circulating air duct. The heat control chamber (4) is provided with an air exchange opening communicated with external air, and the air exchange opening is provided with a third fan (10).

2. The zero-carbon photovoltaic drying system of claim 1, wherein, The photo-thermal part (52) further comprises a heat preservation layer (522), and the lower end of the micro-channel gravity heat pipe (521) is located between the photovoltaic part (51) and the heat preservation layer (522).

3. The zero-carbon photovoltaic drying system of claim 1, wherein, The air duct of the photovoltaic and photo-thermal module (5) is a single straight air duct.

4. The zero-carbon photovoltaic drying system of claim 1, wherein, The control module (1) comprises a controller (11) and a first temperature sensor (12) and a temperature and humidity sensor (13) connected with the controller (11). The first temperature sensor (12) is arranged on the photovoltaic and photo-thermal module (5), and the temperature and humidity sensor (13) is arranged on the heat storage chamber (3).

5. The zero-carbon photovoltaic drying system of claim 1, wherein, The air energy heat pump module (6) comprises a condenser (61), and the control module (1) further comprises a second temperature sensor (14) connected with the controller (11), and the second temperature sensor (14) is arranged on the condenser (61).

6. The zero-carbon photovoltaic drying system of claim 5, wherein, The air energy heat pump module (6) further comprises an evaporator (62), and the heat control chamber (4) is provided with a fourth fan (20) arranged adjacent to the evaporator (62). The control module (1) further comprises a solar radiation intensity sensor (15) connected with the controller (11).

7. The zero-carbon photovoltaic drying system of claim 1, wherein, The drying chamber (2) is made of light-transmitting glass material.

Images