A thermal switch intelligent phase change wall

Abstract

The present application relates to a kind of hot switch intelligent phase change wall, including heat transfer control board block with heat pipe as core, energy storage board block with phase change wall as core, characterized by: the indoor and outdoor sides of the hot switch intelligent phase change wall are heat transfer control board block, and gravity heat pipe is arranged in, the working medium is in the heat pipe, the inner surface of the heat transfer cavity is provided with low emissivity material, the heat transfer cavity of the heat pipe is provided with control device, control device is made of multiple groups of connecting pieces, can be switched by changing the space position state of connecting piece and heat pipe disconnect or connection state, to control the heat transfer of heat pipe start-stop and the heat transfer direction of heat pipe when working.The phase change energy storage board block is located in the middle of heat transfer control board block on the inside and outside of wall, can store / release heat using the high latent heat performance of phase change material, and the phase change wall is provided with metal fin.

Description

Technical Field

[0001] This invention relates to the field of energy-saving building walls, and more particularly to a heat-switching intelligent phase change wall based on heat pipes. Background Technology

[0002] Improving the thermal performance of building envelopes to effectively reduce building cooling and heating loads is one method to achieve building energy conservation. To this end, some patents utilize the high latent heat value of phase change materials (PCMs) to design PCM energy storage walls. These walls absorb and store heat during the day (in high-temperature environments) and release energy at night (in low-temperature environments), achieving a certain degree of building energy conservation and emission reduction. However, because the heat absorption / release of PCMs is affected by the ambient temperature, the heat transfer efficiency is often low and difficult to control. This leads to many inconveniences in the practical use of such inventions. For example, during use, heat absorption and release may occur too slowly, too early, too late, or at inappropriate times, resulting in the ineffective utilization of some heat energy and failing to fully utilize the energy storage and release potential of the PCM walls.

[0003] Heat pipes, as high-thermal-conductivity heat transfer elements, can rapidly transfer heat through the heat absorption and release processes of the working fluid during evaporation and condensation within a fully enclosed vacuum tube. They are widely used in building equipment such as heat exchangers and air conditioning systems. Combining heat pipes with phase change materials (PCMs) to create a thermal switch with the heat pipe as the core could significantly improve the control of heat absorption and release in PCMs. Although some patents have attempted to combine heat pipes with PCMs, these patents mostly employ uncontrolled heat transfer modes. Problems include: the heat transfer direction of heat pipes is fixed during operation, making them suitable only for specific periods of the year, such as summer or winter, and difficult to adapt to the varying climatic conditions throughout the year, limiting their applicability; PCM walls are affected by ambient temperature and can only passively store or release energy, making it impossible to control the timing of heat storage and release in PCMs. This results in existing patents being idle for extended periods during actual building operation, low utilization rates, and insufficient full utilization of the energy in passively stored / released PCM walls.

[0004] To address this, the present invention utilizes bidirectional implanted heat pipes to create a thermal switch, intelligently controlling and regulating the on / off state and direction of heat transfer through the heat pipes. Combined with phase change materials, this forms a thermal switch-based intelligent phase change wall. This not only improves the energy absorption and release efficiency of the phase change wall but also, by controlling the on / off state of heat transfer through the heat pipes and their working direction, regulates the heat storage and release process of the phase change material and the overall thermal resistance of the wall in different directions. This allows the wall to better adapt to energy-saving and energy storage / release requirements under various complex environmental conditions, reducing building energy consumption and enhancing the building's flexible energy utilization potential. Summary of the Invention

[0005] The purpose of this invention is to provide an energy-saving wall based on a bidirectional implanted heat pipe to form a heat switch for intelligent heat transfer and a phase change material for controllable energy storage. This wall can intelligently control the storage and release of energy according to indoor and outdoor temperatures and the needs of the indoor living environment, thereby improving indoor thermal comfort, reducing building energy consumption, and enhancing the building's flexible energy use potential.

[0006] To achieve the above objectives, this invention provides a thermally switched intelligent phase change wall, comprising a thermally switched heat transfer control plate with a heat pipe as its core and a phase change energy storage plate with a phase change wall as its core. The key feature is that both the indoor and outdoor sides of the thermally switched intelligent phase change wall are equipped with thermally switched heat transfer control plates. Each thermally switched heat transfer control plate has a built-in control module, which consists of multiple sets of connectors. By changing the position of the connectors, the connection between the heat pipe and the indoor / outdoor / phase change wall, as well as the connection method, can be adjusted, thereby controlling the on / off state and direction of heat transfer. The phase change energy storage plate is located in the middle of the wall, sandwiched between the two thermally switched heat transfer control plates, and can store / release energy using the high latent heat performance of the phase change material. The phase change wall has built-in metal fins.

[0007] Furthermore, the heat transfer control module of the heat switch includes a gravity heat pipe assembly, a heat transfer cavity in which the gravity heat pipe assembly is located, and a control device. The gravity heat pipe assembly is placed in the middle of the heat transfer cavity and does not contact the heat transfer cavity.

[0008] Furthermore, the inner surface of the heat transfer cavity and the outer surface of the phase change wall are both covered with a low emissivity material.

[0009] Furthermore, a control device is placed between the gravity heat pipe assembly and the heat transfer cavity to control the connection between the heat pipe and the heat transfer cavity, thereby controlling the start and stop of heat transfer and the direction of heat transfer.

[0010] Furthermore, the gravity heat pipe assembly includes a gravity heat pipe and insulation material.

[0011] Furthermore, the vertical portion of the gravity heat pipe is encased in insulation material, isolating it from the air inside the cavity. The evaporation end of the lower horizontal portion and the condensation end of the upper horizontal portion of the gravity heat pipe are directly exposed to the air inside the cavity without insulation material. The remaining portion is encased in insulation material to minimize heat exchange between the air inside the heat transfer cavity and the heat pipe.

[0012] Furthermore, the heat pipe contains a working fluid.

[0013] Furthermore, the control device consists of multiple fixed connectors and linkage connectors.

[0014] Furthermore, the fixed connector is partially placed on the inner surface of the heat transfer cavity and partially placed on the surface of the phase change wall.

[0015] Furthermore, the linkage connector is located between the upper and lower fixed connectors, the condensing end of the upper gravity heat pipe, and the evaporating end of the lower gravity heat pipe, and can be controlled to move upward, middle, and downward.

[0016] Furthermore, the linkage connector moves downward to connect the condenser end of the gravity heat pipe to the indoor and outdoor walls / phase change walls, enabling heat transfer from the indoor and outdoor walls / phase change walls to the heat pipe; the linkage connector moves upward to connect the evaporator end of the gravity heat pipe to the indoor and outdoor walls / phase change walls, enabling heat transfer from the heat pipe to the indoor and outdoor walls / phase change walls; the linkage connector is placed between the condenser end of the previous gravity heat pipe and the evaporator end of the next gravity heat pipe, but is not connected to either of them, so the heat pipe does not transfer heat, and the heat transfer cavity serves as insulation.

[0017] Furthermore, the phase change energy storage module includes a phase change wall and metal fins. The metal fins are embedded in the middle of the phase change wall to accelerate the energy storage / release speed of the wall.

[0018] Beneficial Effects: The present invention proposes a thermal switch intelligent phase change wall that can simultaneously change the thermal resistance of each thermal switch heat transfer control plate from the outside to the inside and from the inside to the outside by controlling the position of the linkage connector. This enables switching between three working states: low thermal resistance for heat transfer from the outside to the inside, low thermal resistance for heat transfer from the inside to the outside, and high thermal resistance for heat insulation. By controlling the combination of different working states of the heat transfer control plates on both sides, the heat exchange timing between the phase change material and the outdoor and indoor environments can be targeted. The heat pipes accelerate the heat storage and release process, which can adapt to the building's energy storage or consumption needs under different seasons, different indoor and outdoor thermal environments, and different usage periods, thereby improving the building's flexible energy use and energy-saving potential. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the cross-sectional structure of the wall of the present invention.

[0020] Figure 2 for Figure 1 Additional explanatory diagram with annotations.

[0021] Figure 3 for Figure 1 Enlarged schematic diagram of the structure of point A (external heat switch heat transfer control plate control device).

[0022] Figure 4 for Figure 1 Enlarged schematic diagram of the structure of point B (internal heat switch heat transfer control plate control device).

[0023] Explanation of reference numerals in the attached figures:

[0024] 1000-Phase Change Wall Panel

[0025] 1100-Phase Change Wall

[0026] 1200-Metal Fin

[0027] 2000-Outdoor side thermal switch heat transfer control panel

[0028] 2100-Outdoor side thermal switch heat transfer control panel control device

[0029] 2110-Outdoor side thermal switch heat transfer control panel external fixed connection parts

[0030] 2111-External fixed connector at the evaporator end of the external heat transfer control panel of the external heat switch

[0031] 2112-External fixed connector at the condenser end of the external heat transfer control panel of the external heat switch

[0032] 2120-Inner fixed connection of outdoor side thermal switch heat transfer control panel

[0033] 2121-Internal fixed connector at the evaporator end of the external heat transfer control panel

[0034] 2122-Internal fixed connector at the condenser end of the external heat transfer control panel

[0035] 2130-Outdoor side thermal switch heat transfer control panel linkage connector

[0036] 2131-External linkage connector for external heat transfer control panel of external heat switch

[0037] 2132-Interlocking connector within the external heat transfer control panel of the heat exchange switch

[0038] 2200-Outdoor side thermal switch heat transfer control plate heat pipe

[0039] 2210 - External Heat Switch Heat Transfer Control Plate Heat Pipe Outer Side

[0040] 2211-External Heat Switch Heat Transfer Control Board Heat Pipe External Evaporation End

[0041] 2212-External Heat Switch Heat Transfer Control Panel Heat Pipe External Condensation End

[0042] 2220 - External heat switch heat transfer control plate heat pipe inner side

[0043] 2221-External heat switch heat transfer control plate heat pipe internal evaporator end

[0044] 2222-External heat transfer control panel, heat pipe internal condenser end

[0045] 2300-Outdoor Side Heat Transfer Chamber

[0046] 2400-Insulation Material

[0047] 2500 - Low emissivity material for the inner surface of the heat transfer cavity

[0048] 3000-Indoor Side Thermal Switch Heat Transfer Control Panel

[0049] 3100-Indoor side thermal switch heat transfer control panel control device

[0050] 3110 - External Fixed Connector for Indoor Thermal Switch Heat Transfer Control Panel

[0051] 3111-External fixed connector at the evaporator end of the internal heat transfer control panel

[0052] 3112-External fixed connector at the condenser end of the internal heat transfer control panel

[0053] 3120-Indoor side thermal switch heat transfer control panel internal fixed connection parts

[0054] 3121-Internal fixed connector at the evaporator end of the internal heat transfer control panel

[0055] 3122-Internal fixed connector at the condenser end of the internal heat transfer control panel of the internal heat switch

[0056] 3130-Indoor side thermal switch heat transfer control panel linkage connector

[0057] 3131-Internal heat switch heat transfer control panel external linkage connector

[0058] 3132-Internal linkage connector for internal heat transfer control panel

[0059] 3200-Indoor side thermal switch heat transfer control plate heat pipe

[0060] 3210-Internal heat switch heat transfer control plate heat pipe outer side

[0061] 3211-Internal heat transfer control plate, heat pipe external evaporator end

[0062] 3212-Internal heat transfer control plate, heat pipe external condenser end

[0063] 3220-Internal Heat Switch Heat Transfer Control Plate Heat Pipe Inner Side

[0064] 3221-Internal Heat Switch Heat Transfer Control Plate Heat Pipe Internal Evaporation End

[0065] 3222-Internal Heat Switch Heat Transfer Control Plate Heat Pipe Internal Condensation End

[0066] 3300-Indoor Side Heat Transfer Chamber

[0067] 3400 - Thermal Insulation Material

[0068] 3500 - Low emissivity material for the inner surface of the heat transfer cavity Detailed Implementation

[0069] The heat transfer control modules of the indoor and outdoor heat switches of this invention have three working states: inward, outward, and disconnected heat transfer. The combination of the two can form the following nine different working conditions, which can be intelligently adjusted according to the indoor and outdoor temperature and thermal environment requirements. The specific control process and implementation effect are shown in Table 1 and Table 2.

[0070] Operating Condition 1: Both the outdoor and indoor heat transfer control panels transfer heat from the outdoor to the indoor environment. Adjusting the external linkage connector 2131 of the external heat transfer control plate to move upward, connecting the external fixed connector 2111 at the evaporation end of the external heat transfer control plate with the external evaporation end 2211 of the heat pipe of the external heat transfer control plate; adjusting the internal linkage connector 2132 of the external heat transfer control plate to move downward, connecting the internal fixed connector 2122 at the evaporation end of the external heat transfer control plate with the internal condensation end 2222 of the heat pipe of the external heat transfer control plate; adjusting the internal linkage connector 3131 of the internal heat transfer control plate to move upward, connecting the external fixed connector 3111 at the evaporation end of the internal heat transfer control plate with the external evaporation end 3211 of the heat pipe of the internal heat transfer control plate; adjusting the internal linkage connector 3132 of the internal heat transfer control plate to move downward, connecting the internal fixed connector 3122 at the condensation end of the internal heat transfer control plate with the internal condensation end 3222 of the heat pipe of the internal heat transfer control plate, the phase change wall simultaneously stores and releases energy.

[0071] Operating Condition 2: Heat is transferred to the phase change material from both the outdoor and indoor environments. Adjust the external linkage connector 2131 of the external heat transfer control plate to move upward, connecting the external fixed connector 2111 at the evaporation end of the external heat transfer control plate with the external evaporation end 2211 of the heat pipe of the external heat transfer control plate; adjust the internal linkage connector 2132 of the external heat transfer control plate to move downward, connecting the internal fixed connector 2122 at the evaporation end of the external heat transfer control plate with the internal condensation end 2222 of the heat pipe of the external heat transfer control plate; adjust the internal linkage connector 3131 of the internal heat transfer control plate to move downward, connecting the external fixed connector 3112 at the condensation end of the internal heat transfer control plate with the external condensation end 3212 of the heat pipe of the internal heat transfer control plate; adjust the internal linkage connector 3132 of the internal heat transfer control plate to move upward, connecting the internal fixed connector 3121 at the evaporation end of the internal heat transfer control plate with the internal evaporation end 3221 of the heat pipe of the internal heat transfer control plate; phase change wall energy storage.

[0072] Operating Condition 3: Heat transfer from the outside to the phase change material, with the heat transfer of the indoor thermal switch heat transfer control plate disconnected. Adjust the external linkage connector 2131 of the external thermal switch heat transfer control plate upward to connect the external fixed connector 2111 at the evaporation end of the external thermal switch heat transfer control plate with the external evaporation end 2211 of the heat pipe of the external thermal switch heat transfer control plate; adjust the internal linkage connector 2132 of the external thermal switch heat transfer control plate downward to connect the internal fixed connector 2122 at the evaporation end of the external thermal switch heat transfer control plate with the internal condensation end 2222 of the heat pipe of the external thermal switch heat transfer control plate; adjust the internal and external linkage connectors 3131 and 3132 of the internal thermal switch heat transfer control plate to be in the middle, not connected to the internal / external fixed connectors 3110 / 3120 or the heat pipe 3200 of the internal thermal switch heat transfer control plate for phase change wall energy storage and thermal insulation.

[0073] Operating Condition 4: The phase change material transfers heat to both the outdoor and indoor environments simultaneously. Adjust the external linkage connector 2131 of the external heat transfer control plate to move downward, connecting the external fixed connector 2112 at the condensing end of the external heat transfer control plate with the external condensing end 2212 of the heat pipe of the external heat transfer control plate; move the internal linkage connector 2132 of the external heat transfer control plate upward, connecting the internal fixed connector 2121 at the evaporating end of the external heat transfer control plate with the internal evaporating end 2221 of the heat pipe of the external heat transfer control plate; adjust the internal linkage connector 3131 of the internal heat transfer control plate to move upward, connecting the external fixed connector 3111 at the evaporating end of the internal heat transfer control plate with the external evaporating end 3211 of the heat pipe of the internal heat transfer control plate; move the internal linkage connector 3132 of the internal heat transfer control plate downward, connecting the internal fixed connector 3122 at the condensing end of the internal heat transfer control plate with the internal condensing end 3222 of the heat pipe of the internal heat transfer control plate, and the phase change wall releases energy.

[0074] Operating Condition 5: Both the outdoor and indoor heat transfer control panels transfer heat from indoors to outdoors. Adjusting the external linkage connector 2131 of the external heat transfer control plate downwards connects the external fixed connector 2112 at the condensing end of the external heat transfer control plate to the external condensing end 2212 of the heat pipe of the external heat transfer control plate. Adjusting the internal linkage connector 2132 of the external heat transfer control plate upwards connects the internal fixed connector 2121 at the evaporating end of the external heat transfer control plate to the internal evaporating end 2221 of the heat pipe of the external heat transfer control plate. Adjusting the internal linkage connector 3131 of the internal heat transfer control plate downwards connects the external fixed connector 3112 at the condensing end of the internal heat transfer control plate to the external condensing end 3212 of the heat pipe of the internal heat transfer control plate. Adjusting the internal linkage connector 3132 of the internal heat transfer control plate upwards connects the internal fixed connector 3121 at the evaporating end of the internal heat transfer control plate to the internal evaporating end 3221 of the heat pipe of the internal heat transfer control plate. The phase change wall simultaneously stores and releases energy.

[0075] Condition 6: The phase change material transfers heat to the outside, and the heat transfer of the indoor thermal switch heat transfer control plate is disconnected. Adjust the external linkage connector -2131 of the external thermal switch heat transfer control plate to move it down, connecting the external fixed connector 2112 at the condensing end of the external thermal switch heat transfer control plate with the external condensing end 2212 of the heat pipe of the external thermal switch heat transfer control plate. Move the internal linkage connector 2132 of the external thermal switch heat transfer control plate up, connecting the internal fixed connector 2121 at the evaporating end of the external thermal switch heat transfer control plate with the internal evaporating end 2221 of the heat pipe of the external thermal switch heat transfer control plate. Adjust the internal and external linkage connectors 3131 and 3132 of the internal thermal switch heat transfer control plate to be in the middle, not connected to the internal / external fixed connectors 3110 / 3120 or the heat pipe 3200 of the internal thermal switch heat transfer control plate. The phase change wall releases energy and provides thermal insulation.

[0076] Condition 7: Heat transfer is disconnected from the outdoor heat switch heat transfer control panel, and the phase change material transfers heat to the indoor unit. Adjust the external and internal linkage connectors 2131 and 2132 of the outdoor heat switch heat transfer control panel to the middle position, without connecting them to the internal / external fixed connectors 2110 / 2120 or heat pipe 2200 of the outdoor heat switch heat transfer control panel; adjust the internal linkage connector 3131 of the internal heat switch heat transfer control panel upward to connect the external fixed connector 3111 at the evaporation end of the internal heat switch heat transfer control panel with the external evaporation end 3211 of the heat pipe of the internal heat switch heat transfer control panel; adjust the internal linkage connector 3132 of the internal heat switch heat transfer control panel downward to connect the internal fixed connector 3122 at the condensation end of the internal heat switch heat transfer control panel with the internal condensation end 3222 of the heat pipe of the internal heat switch heat transfer control panel, and the phase change wall releases energy.

[0077] Operating Condition 8: Heat transfer is disconnected from the outdoor heat switch heat transfer control panel, and heat is transferred from the indoor unit to the phase change material. Adjust the external and internal linkage connectors 2131 and 2132 of the outdoor heat switch heat transfer control panel to the middle position, without connecting them to the internal / external fixed connectors 2110 / 2120 or heat pipe 2200 of the outdoor heat switch heat transfer control panel; adjust the internal linkage connector 3131 of the internal heat switch heat transfer control panel to move downward, connecting the external fixed connector 3112 at the condensing end of the internal heat switch heat transfer control panel with the external condensing end 3212 of the heat pipe of the internal heat switch heat transfer control panel; move the internal linkage connector 3132 of the internal heat switch heat transfer control panel upward, connecting the internal fixed connector 3121 at the evaporating end of the internal heat switch heat transfer control panel with the internal evaporating end 3221 of the heat pipe of the internal heat switch heat transfer control panel, and the phase change wall stores energy.

[0078] Condition 9: Both outdoor and indoor heat transfer modules are disconnected and no heat transfer occurs. Adjust the external and internal linkage connectors 2131 and 2132 of the external heat transfer control panel to the middle position, without connecting them to the internal / external fixed connectors 2110 / 2120 or heat pipe 2200 of the external heat transfer control panel; adjust the internal and external linkage connectors 3131 and 3132 of the internal heat transfer control panel to the middle position, without connecting them to the internal / external fixed connectors 3110 / 3120 or heat pipe 3200 of the internal heat transfer control panel, and the phase change wall will be insulated.

[0079] Table 1 Heat transfer direction during heat pipe operation

[0080]

[0081] Note: 2131 - External linkage connector of external heat switch heat transfer control panel; 2132 - Internal linkage connector of external heat switch heat transfer control panel; 3131 - External linkage connector of internal heat switch heat transfer control panel; 3132 - Internal linkage connector of internal heat switch heat transfer control panel.

[0082] Table 2

[0083]

Claims

1. A thermal switch intelligent phase change wall, comprising an outdoor thermal switch heat transfer control panel, an indoor thermal switch heat transfer control panel, and a phase change energy storage panel located between the two, characterized in that: Both the outdoor and indoor thermal switch heat transfer control panels include a heat transfer cavity, in which a gravity heat pipe assembly and a control device are installed. The control device is used to control the connection status of the heat pipe with the indoor and outdoor environment or the phase change wall, and includes a fixed connector and a movable linkage connector. The linkage connector connects or disconnects the heat pipe from the fixed connector through its displacement, thereby controlling the heat transfer opening and closing and the heat transfer direction of the heat pipe. The phase change energy storage panel includes a phase change wall and metal fins embedded in the phase change wall, used to store or release heat through the phase change material.

2. The thermal switch intelligent phase change wall according to claim 1, characterized in that: The gravity heat pipe assembly is located in the middle of the heat transfer cavity and does not contact the heat transfer cavity or the phase change wall; the inner surface of the heat transfer cavity and the outer surface of the phase change wall are both provided with low emissivity material.

3. The thermal switch intelligent phase change wall according to claim 2, characterized in that: The gravity heat pipe assembly includes a gravity heat pipe and an insulating material that wraps around it, except for the evaporation and condensation ends.

4. The thermal switch intelligent phase change wall according to claim 3, characterized in that: The gravity heat pipe is filled with a working fluid.

5. The thermal switch intelligent phase change wall according to claim 2, characterized in that: The control device includes a fixed connector located on the inner surface of the heat transfer cavity and the surface of the phase change wall, and a movable linkage connector located therebetween. The heat transfer opening and closing and direction of the heat pipe are controlled by the up and down displacement of the linkage connector.

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