Heat exchange enhancement and heat storage system using heat pipe

Abstract

The present invention discloses a heat exchange and enhanced heat storage system using a heat pipe, which relates to the field of variable heat storage technology, and includes an evaporation module, which is used for a liquid working medium to absorb heat and evaporate into a gaseous state to achieve heat transfer; a cooling module, which is used to achieve condensation of the gaseous working medium to achieve heat release; a conversion module, which is used to promote the circulation of the working medium in the system to achieve heat absorption and release; a monitoring module, which automatically adjusts the air flow and working medium circulation according to temperature changes; a liquid storage module: used to store liquid refrigerant to achieve refrigeration system cyclic operation; a phase change heat transfer module: used to store phase change materials. The present invention allows the system to operate flexibly under different heat load conditions and adapt to different cooling and heating requirements through the coordination between the cooling module, the evaporator and the conversion module, thereby improving the heat conduction efficiency and ensuring the overall energy storage and release efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of variable heat storage, and in particular to a heat exchange enhanced heat storage system using a heat pipe. Background Art

[0002] Phase change thermal storage technology is an effective way to store thermal energy, using materials to absorb or release large amounts of heat during phase change. This technology is widely used in renewable energy systems, building heating, cooling, and cogeneration. Phase change thermal storage systems can store thermal energy during peak loads and release it during peak demand, thereby improving energy efficiency. Although the prior art has made some progress in the field of phase change thermal storage, it still has the following defects: low thermal conduction efficiency, and the low thermal conductivity of many phase change materials, resulting in slow heat transfer, which affects the overall energy storage and release efficiency. Therefore, a phase change thermal storage system using heat pipes for heat exchange enhancement is proposed. Summary of the invention

[0003] Therefore, the technical problem to be solved by the present invention is that the existing variable heat storage technology has low heat conduction efficiency, which affects the efficiency of overall energy storage and release.

[0004] The above technical problem is solved by the following technical solution: The present invention proposes a heat pipe heat exchange enhanced heat storage system, which includes a condenser and an evaporator, the condenser and the evaporator are connected through a pipeline, and the condenser and the evaporator are connected to a phase change storage tank through a pipeline;

[0005] A cooling module is provided in the condenser, a conversion module is provided inside the phase change storage tank, and the cooling module cooperates with the conversion module.

[0006] In a preferred embodiment of the heat exchange enhanced heat storage system of the heat pipe of the present invention: the phase change storage tank is located on the right side of the condenser, and the phase change storage tank is located on the top of the evaporator.

[0007] In a preferred embodiment of the heat exchange enhanced heat storage system of the heat pipe of the present invention: the cooling module includes condensing fins arranged on the outer wall of the condenser, and the interior of the condenser is provided with a first working medium layer, a cooling water layer and a second working medium layer.

[0008] In a preferred embodiment of the heat exchange enhanced heat storage system of the heat pipe of the present invention: the cooling water layer is wrapped by the first working medium layer and the second working medium layer, and the cooling water layer is located between the first working medium layer and the second working medium layer.

[0009] In a preferred embodiment of the heat exchange enhanced heat storage system using heat pipes according to the present invention: the conversion module includes a liquid storage tank, a downcomer, a first liquid pipe and a second liquid pipe, the liquid storage tank is arranged on the right side of the first working fluid layer, and the liquid storage tank is connected to the bottom of the first working fluid layer through the downcomer.

[0010] In a preferred embodiment of the heat exchange enhanced heat storage system of the heat pipe of the present invention: the liquid storage tank is connected to the working fluid pump through the first liquid pipe, the working fluid pump is connected to the working fluid valve through the second liquid pipe, and the working fluid pump is connected to the second working fluid layer through a pipeline.

[0011] In a preferred embodiment of the heat exchange enhanced heat storage system using heat pipes of the present invention: evaporation fins are provided on the outer wall of the evaporator, and the evaporation fins are used to increase the heat exchange area.

[0012] In a preferred embodiment of the heat exchange and heat storage system for heat pipes of the present invention, it also includes a monitoring module, which can automatically adjust the air flow and working medium circulation according to temperature changes.

[0013] In a preferred embodiment of the heat exchange enhanced heat storage system of the heat pipe of the present invention: the monitoring module includes a temperature sensor, a central controller and a frequency converter, the temperature sensor is connected to the liquid storage tank, and the frequency converter is connected to the working fluid pump.

[0014] In a preferred embodiment of the heat exchange enhanced heat storage system of the heat pipe of the present invention: the temperature sensor is used to monitor the temperature change in the system;

[0015] The central controller is used to receive data monitored by the temperature sensor and control the operation of the entire system;

[0016] The frequency converter is used to adjust the operating speed of the working fluid pump.

[0017] The beneficial effect of the present invention is that: through the coordination between the cooling module, the evaporator and the conversion module, the present invention allows the system to operate flexibly under different heat load conditions and adapt to different refrigeration and heating needs, thereby improving the heat conduction efficiency and ensuring the overall energy storage and release efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments of the present invention are briefly introduced below. Obviously, the drawings described below only relate to some embodiments of the present invention, but are not intended to limit the present invention. Among them:

[0019] Figure 1 A flow chart of a heat exchange enhancement heat storage system using a heat pipe is shown;

[0020] Figure 2 The overall structural diagram of the condenser is shown;

[0021] Figure 3 A schematic diagram of the structure of a phase change storage tank is shown;

[0022] Figure 4 A schematic diagram of the structure of the monitoring module is shown. DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to better understand the present invention, the present invention is further described in detail below in conjunction with specific implementation methods and drawings.

[0024] The terms used in the present invention are those general terms currently widely used in the art in consideration of the functions of the present invention, but these terms may vary according to the intention of a person of ordinary skill in the art, precedents, or new technologies in the art. In addition, specific terms may be selected by the applicant, and in this case, their detailed meanings will be described in the detailed description of the present invention. Therefore, the terms used in the specification should not be understood as simple names, but rather as a general description based on the meaning of the terms and the present invention.

[0025] Reference Figure 1 The present embodiment provides a heat pipe heat exchange enhanced heat storage system, including a condenser 1 and an evaporator 2. Through the cooperation between the condenser 1 and the evaporator 2, the system is allowed to operate flexibly under different heat load conditions and adapt to different cooling and heating requirements, thereby improving the heat conduction efficiency and ensuring the overall energy storage and release efficiency. The condenser 1 is connected to the evaporator 2 through a pipeline 4, and the condenser 1 and the evaporator 2 are connected to the phase change storage tank 3 through the pipeline 4. The phase change storage tank 3 is located on the right side of the condenser 1, and the phase change storage tank 3 is located on the top of the evaporator 2. The phase change storage tank 3 is used to receive the gaseous working medium and condense it into a liquid phase for thermal energy storage. The phase change storage tank 3 is filled with a phase change material for storage. The phase change material is a mixture of calcium chloride hexahydrate and organic PCMs, which can improve thermal conductivity and stability.

[0026] The condenser 1 is provided with a cooling module 11, and the phase change storage tank 3 is provided with a conversion module 31. The cooling module 11 cooperates with the conversion module 31. Through the setting of the cooling module 11, the gaseous working medium in the conversion module 31 can be condensed, the heat can be released, and the normal operation of the system can be ensured. Through the setting of the conversion module 31, the system can flexibly adjust the working medium flow rate according to the actual heat load demand. The system can operate stably, reduce the risk of failure, ensure the effective circulation of the working medium in the system, and realize the efficient absorption and release of heat, thereby improving the energy utilization efficiency and reliability of the entire heat storage and refrigeration system and reducing the overall energy consumption;

[0027] Through the setting of the conversion module 31, the generated gaseous working medium can be transmitted to the phase change storage tank 3 through the pipeline 4. In the phase change storage tank 3, the gaseous working medium contacts the inner wall of the tank, releases heat and starts the condensation process. The working medium is completely condensed into liquid in the phase change storage tank 3, storing thermal energy and ready to be released when needed. When the system needs heat, the liquid working medium absorbs heat in the phase change storage tank, evaporates into gas again, and flows back to the conversion module through the downcomer to release heat.

[0028] Furthermore, the conversion module 31 transmits the generated gas to the cooling module 11 through the pipeline 4 to complete the condensation process of the working medium.

[0029] It should be noted that in the conversion module, the working fluid absorbs heat in the evaporator and changes from liquid to gas. The gaseous working fluid is transmitted to the cooling module through pipeline 4 to prepare for the condensation process. In the cooling module, the gaseous working fluid first exchanges heat with the external environment in the first working fluid layer to start the condensation process. Subsequently, the working fluid enters the cooling water layer and exchanges heat with the cooling water for further condensation. Finally, the working fluid completes the condensation process in the second working fluid layer and changes to liquid. The condensed liquid working fluid flows back to the liquid storage tank through the downcomer to complete the cycle.

[0030] When in use, when cooling, in situations where the temperature needs to be lowered, such as in air conditioning systems or industrial cooling processes, the evaporator 2 absorbs heat, transfers the heat to the condenser 1 through the pipeline 4 for release, and the liquid refrigerant flows back to the evaporator 2 to complete the cycle.

[0031] When storing heat, during periods of low electricity demand, the system is operated using off-peak electricity prices, and the phase change material in the phase change storage tank 3 absorbs heat and stores heat through phase change, and the heat is transferred to the phase change storage tank 3 through the evaporator 2 and the pipeline 4.

[0032] When releasing heat, during periods of high electricity demand, the phase change storage tank 3 releases the stored heat and provides thermal energy through the evaporator 2 and the pipeline 4 for use in heating or air conditioning systems during peak heat demand periods, thereby optimizing energy use and reducing energy waste. Efficient heat exchange and energy storage reduce energy consumption and can reduce operating costs in the long run.

[0033] It should be noted that these modules work together to ensure that the system can effectively absorb, store and release heat, while achieving automation and optimized operation through intelligent control systems.

[0034] In summary, the beneficial effect of the present invention is that through the cooperation between the evaporation module and the cooling module, the system is allowed to operate flexibly under different heat load conditions and adapt to different cooling and heating needs, thereby improving the heat conduction efficiency and ensuring the overall energy storage and release efficiency. At the same time, through the setting of the phase change energy storage module, thermal energy is stored when the power demand is low and released during peak hours, thereby optimizing energy use and reducing energy waste. Efficient heat exchange and energy storage reduce energy consumption, which can reduce operating costs in the long run.

[0035] Reference Figure 1 As an optional embodiment, an evaporator 2 is provided with an evaporator fin 21 on the outer wall. The evaporator fin 21 is used to increase the heat exchange area. The evaporator 2 can effectively absorb the heat from the environment or a specific heat source, evaporate the liquid refrigerant into a gaseous state, and realize heat transfer. The evaporator fin 21 is provided to increase the heat exchange area, thereby improving the heat exchange efficiency.

[0036] It should be noted that the fins can optimize the path of airflow or liquid flowing through the evaporator, making the heat exchange more complete and improving the overall heat exchange efficiency. The fins also help achieve a more uniform temperature distribution on the evaporator surface and reduce hot spots or cold spots, which is crucial to maintaining system efficiency and preventing local overheating.

[0037] Reference Figure 2 In one embodiment provided in the present application, the cooling module 11 includes condensing fins 111 arranged on the outer wall of the condenser 1. The arrangement of the condensing fins 111 increases the heat exchange area, improves the heat exchange efficiency, and helps the system reach thermal equilibrium faster. The interior of the condenser 1 is provided with a first working fluid layer 112, a cooling water layer 113 and a second working fluid layer 114. The cooling water layer 113 is wrapped by the first working fluid layer 112 and the second working fluid layer 114. The cooling water layer 113 is located between the first working fluid layer 112 and the second working fluid layer 114. Through the cooperation between the first working fluid layer 112, the cooling water layer 113 and the second working fluid layer 114, condensation is performed step by step, and the system can operate more stably, reducing the thermal stress caused by excessive temperature difference. Through multi-stage condensation and heat exchange, the system can utilize energy more efficiently. At the same time, the efficient heat exchange and condensation process improves the refrigeration capacity of the refrigerant.

[0038] When in use, first start the condenser 1 to condense the high-temperature and high-pressure gaseous refrigerant into liquid. The temperature and pressure of the refrigerant can be reduced through preliminary condensation to prepare for the subsequent heat exchange process. Then, heat is exchanged with the outside through the first working fluid layer 112 inside the condenser 1 to form a preliminary condensed gaseous working fluid. The preliminary condensation helps to reduce the temperature difference inside the system and improve the heat exchange efficiency. Then, the cooling water layer 113 exchanges heat with the first working fluid layer 112 to further condense the working fluid. Through water cooling, heat can be more effectively taken away and the condensation process can be accelerated. Finally, the second working fluid layer 114 exchanges heat with the cooling water layer 113 to complete the condensation process of the working fluid, ensure that the working fluid is completely condensed, and prepare for the next stage of thermal energy storage or release.

[0039] Reference Figure 3 In some embodiments, the conversion module 31 includes a liquid storage tank 311, a downcomer 312, a first liquid pipe 313, and a second liquid pipe 314. The liquid storage tank 311 is arranged on the right side of the first working medium layer 112, and the liquid storage tank 311 is connected to the bottom of the first working medium layer 112 through the downcomer 312. Through the arrangement of the liquid storage tank 311, liquid refrigerant can be effectively stored to realize the refrigeration system cycle operation, provide necessary storage space for the working medium cycle, provide necessary flexibility and stability for the system, ensure that the system can operate efficiently and reliably, and prevent the phenomenon of system operation interruption caused by working medium shortage. The liquid storage tank 311 The first liquid pipe 313 is connected to the working fluid pump 315. Through the setting of the working fluid pump 315, the working fluid can be effectively promoted to circulate in the system to improve the heat exchange efficiency. The working fluid pump 315 is connected to the working fluid valve 316 through the second liquid pipe 314. Through the setting of the working fluid valve 316, the flow direction and flow rate of the working fluid can be effectively and accurately controlled to adapt to different heat load requirements. The working fluid pump 315 is connected to the second working fluid layer 114 through the pipeline 4. Through the cooperation between the first liquid pipe 313 and the second liquid pipe 314, the liquid working fluid can be effectively transported and the working fluid pump and the liquid storage tank can be connected, thereby optimizing the working fluid transportation efficiency and reducing energy loss.

[0040] During use, when the evaporator 2 needs working fluid, the working fluid pump 315 is first started to start the circulation of the working fluid. Secondly, the working fluid pump 315 pushes the liquid working fluid through the liquid pipe and is transported from the liquid storage tank 311 to the evaporator 2. Then the working fluid absorbs heat in the evaporator 2 and evaporates into a gas. Then the gaseous working fluid flows to the condenser 1 through the pipeline 4, releases heat and condenses into a liquid in the condenser 1, and finally the liquid working fluid flows back to the liquid storage tank 311 through the pipeline 4 to complete the cycle.

[0041] Reference Figure 3 and Figure 4In some embodiments, a monitoring module 5 is further included, and the monitoring module 5 can automatically adjust the air flow and working fluid circulation according to temperature changes. The monitoring module 5 includes a temperature sensor 51, a central controller 52 and a frequency converter 53. The temperature sensor 51 is connected to the liquid storage tank 311, and the frequency converter 53 is connected to the working fluid pump 315. The temperature sensor 51 is used to monitor the temperature changes in the system; the central controller 52 is used to receive the data monitored by the temperature sensor 51 and control the operation of the entire system; the frequency converter 53 is used to adjust the operating speed of the working fluid pump 315. Through the setting of the monitoring module 5, the temperature and pressure of key components such as the evaporator 2, the condenser 1, and the phase change storage tank 3 can be monitored in real time. At the same time, according to the data fed back by the temperature sensor, the operating speed of the working fluid pump 315 is automatically adjusted to control the working fluid flow rate.

[0042] When in use, first start the central controller 52 and perform a self-check to ensure that all sensors and actuators are working properly. Then, the temperature sensor 51 continuously collects temperature data of key points in the system, and then the central controller 52 analyzes the temperature data and compares it with the preset value to determine whether it needs to be adjusted. Next, the central controller 52 automatically sends a signal to the inverter 53 based on the analysis result to adjust the operating speed of the working fluid pump 315. At the same time, the system operating status is monitored. Once a potential risk is detected, an alarm is immediately issued and safety measures are taken. The operator can view the system status through the user interface and can manually adjust the settings or receive alarm information.

[0043] Finally, it should be pointed out that the methods and devices described in detail above are only embodiments, and those skilled in the art can modify these embodiments in different ways without departing from the scope of the present invention.

Claims

1. A heat pipe heat exchange enhanced heat storage system, characterized in that: include, A condenser (1) and an evaporator (2), wherein the condenser (1) and the evaporator (2) are connected via a pipeline (4), and the condenser (1) and the evaporator (2) are connected to a phase change storage tank (3) via the pipeline (4); The condenser (1) is provided with a cooling module (11), the interior of the phase change storage tank (3) is provided with a conversion module (31), and the cooling module (11) cooperates with the conversion module (31).

2. The heat exchange and heat storage system for heat pipes according to claim 1, characterized in that: The phase change storage tank (3) is located on the right side of the condenser (1), and the phase change storage tank (3) is located on the top of the evaporator (2).

3. The heat exchange and heat storage system for heat pipes according to claim 2, characterized in that: The cooling module (11) comprises condensing fins (111) arranged on the outer wall of the condenser (1); a first working medium layer (112), a cooling water layer (113) and a second working medium layer (114) are arranged inside the condenser (1).

4. The heat exchange and heat storage system for heat pipes according to claim 3 is characterized in that: The cooling water layer (113) is wrapped by the first working fluid layer (112) and the second working fluid layer (114), and the cooling water layer (113) is located between the first working fluid layer (112) and the second working fluid layer (114).

5. The heat exchange and heat storage system for heat pipes according to claim 4, characterized in that: The conversion module (31) comprises a liquid storage tank (311), a downcomer (312), a first liquid pipe (313) and a second liquid pipe (314); the liquid storage tank (311) is arranged on the right side of the first working fluid layer (112), and the liquid storage tank (311) is connected to the bottom of the first working fluid layer (112) via the downcomer (312).

6. The heat exchange and heat storage system for heat pipes according to claim 5, characterized in that: The liquid storage tank (311) is connected to the working fluid pump (315) via the first liquid pipe (313), the working fluid pump (315) is connected to the working fluid valve (316) via the second liquid pipe (314), and the working fluid pump (315) is connected to the second working fluid layer (114) via the pipeline (4).

7. The heat exchange and heat storage system for heat pipes according to claim 1, characterized in that: Evaporation fins (21) are provided on the outer wall of the evaporator (2), and the evaporation fins (21) are used to increase the heat exchange area.

8. The heat exchange and heat storage system for heat pipes according to any one of claims 1 to 7, characterized in that: It also comprises a monitoring module (5), wherein the monitoring module (5) can automatically adjust the air flow rate and the working medium circulation according to the temperature change.

9. The heat exchange and heat storage system for heat pipes according to claim 8, characterized in that: The monitoring module (5) comprises a temperature sensor (51), a central controller (52) and a frequency converter (53); the temperature sensor (51) is connected to the liquid storage tank (311); and the frequency converter (53) is connected to the working fluid pump (315).

10. The heat exchange and heat storage system of heat pipe according to claim 9, characterized in that: The temperature sensor (51) is used to monitor temperature changes in the system; The central controller (52) is used to receive data monitored by the temperature sensor (51) and control the operation of the entire system; The frequency converter (53) is used to adjust the operating speed of the working fluid pump (315).

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