Room temperature control method achieved through wall

Abstract

The invention discloses a room temperature control method achieved through a wall, and the method comprises the steps that when the indoor temperature is within the temperature range of a human body comfort area, and the outdoor temperature is within the temperature range lower than the temperature range of the human body comfort area, heat transfer inside and outside the wall is blocked through a hollow structure in the wall. When the indoor temperature is lower than the temperature range of the human body comfort area and the outdoor temperature is higher than the temperature range of the human body comfort area, the outdoor heat energy is transferred to the indoor space through flowing of the gas-liquid phase change material. The method has the advantages that energy does not need to be additionally consumed, an outdoor heat source can be better utilized to achieve indoor temperature regulation and control, and the method is particularly suitable for being implemented and applied to high-altitude areas with the large day and night temperature difference.

Description

Technical Field

[0001] The invention relates to the technical field of indoor temperature control in buildings, and in particular to a room temperature control method realized by using a wall. Background Art

[0002] With the progress of society and the improvement of people's quality of life, the pursuit of a more comfortable living environment has become more and more a material life demand of the public. The most significant factor affecting indoor living comfort is the control of indoor temperature. Conventional methods for controlling indoor temperature include installing air conditioning systems or floor heating systems, but these methods will result in a large loss of energy.

[0003] The most common way to control indoor temperature without increasing extra energy loss is to use hollow walls to insulate the room. This way, when it is cold or hot outside, the heat transfer between the indoor and outdoor areas is isolated, ensuring that the indoor temperature is within a more comfortable temperature range. However, this temperature control method with hollow walls also cuts off the heat transfer from the outdoor to the indoor area when the indoor temperature is lower than the human comfort zone and the outdoor temperature is higher. The indoor area still needs additional heating equipment to increase the temperature, resulting in energy loss and failure to fully utilize the outdoor natural heat source.

[0004] In addition, some existing technologies use phase change materials in the wall to achieve indoor temperature regulation by using the heat storage function of the phase change materials. For example, CN201811043662.1 once disclosed a phase change material wall structure with adjustable phase change temperature; CN200520047532.7 once disclosed a thermal insulation wall material containing phase change materials; CN201811074391.6 once disclosed an insulation board with a phase change material sandwich layer and a wall using the insulation board, etc., all of which belong to similar technical solutions. However, this wall that relies on phase change materials to store and release heat to achieve indoor temperature regulation still has the following defects: 1. Since the gasification of phase change materials will cause a large expansion in volume, the capacity of the phase change materials in the wall is limited, resulting in limited heat storage and release temperature regulation performance. 2. Phase change materials usually realize the temperature regulation process of heat storage and release. When the outdoor temperature is high and the indoor temperature is lower than the comfortable temperature, the immediate temperature transfer effect cannot be achieved.

[0005] Therefore, how to design a room temperature control method that can better utilize outdoor air energy to achieve indoor temperature control has become a problem that technicians in this field need to consider and solve. Summary of the invention

[0006] In view of the above-mentioned deficiencies of the prior art, the technical problem to be solved by the present invention is: how to provide a room temperature control method using walls that does not require additional energy consumption and can better utilize outdoor air energy to achieve indoor temperature control.

[0007] In order to solve the above technical problems, the present invention adopts the following technical solutions: A room temperature control method using a wall. In this method, when the indoor temperature is within the temperature range of a human comfort zone and the outdoor temperature is below the temperature range of the human comfort zone, the hollow structure inside the wall is used to block the heat transfer between the inside and outside of the wall. The method is characterized in that when the indoor temperature is below the temperature range of a human comfort zone and the outdoor temperature is above the temperature range of the human comfort zone, the flow of gas-liquid phase change material is used to transfer the outdoor heat energy to the indoor.

[0008] In this way, this method simultaneously utilizes the thermal insulation effect of the hollow structure of the wall and the heat transfer effect of the flow of phase change materials. It can maintain the isolation effect when it is necessary to isolate the internal and external heat conduction, and maintain the heat transfer effect when it is necessary to transfer the external heat to the room. Therefore, there is no need to consume additional energy, and better utilization of outdoor air energy heat sources can be achieved to achieve indoor temperature control.

[0009] Furthermore, in this method, when the indoor temperature is higher than the human comfort zone and the outdoor temperature is lower than the human comfort zone, the flow of the gas-liquid phase change material is used to transfer the indoor heat energy to the outdoor, so that the indoor temperature can be better controlled.

[0010] Furthermore, the temperature range of the human body comfort zone is between 18°C ​​and 28°C.

[0011] Furthermore, the method is implemented by an automatic temperature control wall structure, which includes an outer wall and an inner wall arranged vertically and horizontally at intervals, a heat-resistant cavity is formed between the outer wall and the inner wall, an external interlayer cavity is also arranged on the outer wall, and an internal interlayer cavity is arranged on the inner wall. The upper ends of the internal interlayer cavity and the external interlayer cavity are connected by an air interlayer cavity, and the lower ends of the internal interlayer cavity and the external interlayer cavity are connected by a liquid storage interlayer cavity to form a zigzag phase change material circulation flow channel, and the liquid storage interlayer cavity is filled with a gas-liquid phase change material, and the phase change temperature of the gas-liquid phase change material is at or exceeds the upper limit temperature of the human body comfort zone temperature range.

[0012] In this way, when the indoor temperature is within or below the human comfort zone, and the outdoor temperature is below the human comfort zone (at night or early morning), the gas-liquid phase change material is in liquid state and is not heated. The wall uses its own heat-resistant cavity to isolate heat transfer and achieve heat preservation inside the room. When the outdoor temperature rises to exceed the human comfort zone, and the indoor temperature is below the human comfort zone, the temperature of the outer wall rises to heat the phase change material in the outer interlayer cavity, causing it to vaporize. The vaporized phase change material in the outer interlayer cavity expands due to heat and flows upward through the upper air interlayer cavity to the inner interlayer cavity and the inner wall. After releasing heat and lowering the temperature, it is liquefied and flows downward into the liquid storage interlayer cavity at the lower end. In this way, heat transfer is achieved in a cycle (morning time period), and the heat from the outside is transferred into the room to raise the temperature to the comfort zone. When the outdoor temperature drops rapidly to within or below the human comfort zone in the evening, while the indoor temperature is still above the human comfort zone, the gas-liquid phase change material flows in the opposite direction, transferring the excess indoor heat to the outdoors, cooling the indoor temperature down to the human comfort zone. Therefore, this wall does not require additional energy consumption and can better achieve automatic control of the room temperature. It is especially suitable for installation and use in high-altitude areas where the temperature is high during the day under direct sunlight but drops to very low temperatures at night.

[0013] Furthermore, a layer of wetting material is respectively arranged on the outward side wall surface of the external interlayer cavity and the indoor side wall surface of the internal interlayer cavity, and the lower end of the wetting material layer is connected to the liquid storage interlayer cavity.

[0014] In this way, when the outer interlayer cavity and the inner interlayer cavity are heated respectively, the phase change material can be better vaporized.

[0015] Furthermore, a heat conductivity enhancement structure is respectively provided in the external interlayer cavity and the internal interlayer cavity, and the heat conductivity enhancement structure includes a heat conductive plate attached to the outward side wall surface of the external interlayer cavity and the indoor side wall surface of the internal interlayer cavity, and also includes a heat conductive skeleton connected to the surface of the heat conductive plate, and the wetting material layer is arranged on the surface of the heat conductive plate and the surface of the heat conductive skeleton.

[0016] In this way, heat conduction can be achieved more quickly in the external interlayer cavity and the internal interlayer cavity, the gasification and liquefaction rates of the phase change material can be accelerated, and the reaction rate of the wall heat transfer temperature control can be improved.

[0017] Furthermore, the heat conducting plate and the heat conducting frame are made of metal material or ceramic material, which can better improve the heat conduction efficiency.

[0018] Furthermore, the phase change material circulation flow channel is also provided with a high temperature barrier device, which is used to automatically cut off the phase change material circulation flow channel when the temperature is higher than the phase change temperature by a certain range.

[0019] In this way, when the gas-liquid phase change material in the phase change material circulation flow channel is completely vaporized (at this time, the temperature outside the room is usually higher than the human body's comfortable temperature in a large range, and the indoor temperature is at or above the human body's comfortable temperature in a small range), the temperature inside the channel will rise rapidly under the heating state. At this time, the phase change material circulation flow channel can be isolated by the high-temperature barrier device to prevent heat transfer between the inside and outside of the room through the gas circulation flow in the phase change material circulation flow channel. At this time, the wall can well block the transfer of heat inside and outside the room by the heat-insulating cavity between the outer wall and the inner wall.

[0020] Furthermore, the high-temperature barrier device includes a rectangular groove located at the lowest position of the lower bottom surface of the liquid storage interlayer cavity and arranged along the width direction of the liquid storage interlayer cavity. A card plate is arranged horizontally above the groove in a matching manner. Both ends of the card plate are fixed upward on the top surface of the liquid storage interlayer cavity through shape memory alloys. A partition skin sleeve is also fixedly provided outside the card plate. The upper end of the partition skin sleeve is fixed on the top surface of the liquid storage interlayer cavity and the two sides are arranged along the side walls of the liquid storage interlayer cavity in the width direction. When the shape memory alloy is below the deformation temperature, a connecting space for liquid to pass is reserved between the card plate and the rectangular groove. When the shape memory alloy reaches the deformation temperature, it extends downward so that the card plate falls into the rectangular groove to form a partition. The deformation temperature of the shape memory alloy is 1-3°C higher than the phase change temperature of the gas-liquid phase change material.

[0021] In this way, when there is still liquid phase change material in the liquid storage interlayer cavity, the shape memory alloy will not be deformed, ensuring the connectivity of the liquid storage interlayer cavity. When the phase change material in the liquid storage interlayer cavity is completely vaporized, the temperature in the phase change material circulation flow channel will rise rapidly under the condition that the outdoor temperature continues to conduct heat inward. At this time, the shape memory alloy moves to extend downward, driving the card plate to be inserted downward into the rectangular groove, and the phase change material circulation flow channel is isolated by the partition leather cover, avoiding the indoor and outdoor heat transfer due to the circulation of gas. Therefore, the above-mentioned high-temperature barrier device has a simple, ingenious and reasonable structure, and can realize the isolation control of the phase change material circulation flow channel when needed without additional energy and power. Of course, in the implementation method, the high-temperature barrier device can also be directly implemented by an automatic temperature control electric switch device, but this will result in additional energy consumption.

[0022] In summary, the present invention has the advantages of not requiring additional energy consumption and being able to better utilize outdoor heat sources to achieve indoor temperature control, and is particularly suitable for application in high-altitude areas with large temperature differences between day and night. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the structure of the automatic temperature control wall structure used during implementation.

[0024] Figure 2 for Figure 1 Enlarged structural diagram at A in the middle. DETAILED DESCRIPTION

[0025] The present invention is further described in detail below in conjunction with specific implementation modes.

[0026] When implemented specifically: A room temperature control method using a wall. In this method, when the indoor temperature is within the temperature range of the human comfort zone and the outdoor temperature is below the temperature range of the human comfort zone, the hollow structure inside the wall is used to block the heat transfer between the inside and outside of the wall. The method is characterized in that when the indoor temperature is below the temperature range of the human comfort zone and the outdoor temperature is above the temperature range of the human comfort zone, the flow of gas-liquid phase change material is used to transfer the outdoor heat energy to the indoor.

[0027] In this way, this method simultaneously utilizes the thermal insulation effect of the hollow structure of the wall and the heat transfer effect of the flow of phase change materials. It can maintain the isolation effect when it is necessary to isolate the internal and external heat conduction, and maintain the heat transfer effect when it is necessary to transfer the external heat to the room. Therefore, there is no need to consume additional energy, and better utilization of outdoor air energy heat sources can be achieved to achieve indoor temperature control.

[0028] During implementation, in this method, when the indoor temperature is higher than the human comfort zone and the outdoor temperature is lower than the human comfort zone, the flow of the gas-liquid phase change material is used to transfer the indoor heat energy to the outdoor. This can better achieve indoor temperature control.

[0029] During implementation, the temperature range of the human body comfort zone is between 18°C ​​and 28°C.

[0030] In practice, the method relies on an automatic temperature-controlled wall structure, see Figure 1-2 As shown, the automatic temperature control wall structure includes an outer wall 1 and an inner wall 2 arranged vertically and horizontally at intervals, a heat-resistant cavity 3 is formed between the outer wall 1 and the inner wall 2, an external interlayer cavity 4 is also arranged on the outer wall, and an internal interlayer cavity 5 is arranged on the inner wall. The upper ends of the internal interlayer cavity 5 and the external interlayer cavity 4 are connected through an air interlayer cavity 6, and the lower ends of the internal interlayer cavity and the external interlayer cavity are connected through a liquid storage interlayer cavity 7 to form a zigzag phase change material circulation flow channel, and the liquid storage interlayer cavity is filled with a gas-liquid phase change material, and the phase change temperature of the gas-liquid phase change material is at or exceeds the upper limit temperature of the human body comfort zone temperature range.

[0031] In this way, when the indoor temperature is within or below the human comfort zone, and the outdoor temperature is below the human comfort zone (at night or early morning), the gas-liquid phase change material is in liquid state and is not heated. The wall uses its own heat-resistant cavity to isolate heat transfer and achieve heat preservation inside the room. When the outdoor temperature rises to exceed the human comfort zone, and the indoor temperature is below the human comfort zone, the temperature of the outer wall rises to heat the phase change material in the outer interlayer cavity, causing it to vaporize. The vaporized phase change material in the outer interlayer cavity expands due to heat and flows upward through the upper air interlayer cavity to the inner interlayer cavity and the inner wall. After releasing heat and lowering the temperature, it is liquefied and flows downward into the liquid storage interlayer cavity at the lower end. In this way, heat transfer is achieved in a cycle (morning time period), and the heat from the outside is transferred into the room to raise the temperature to the comfort zone. When the outdoor temperature drops rapidly to within or below the human comfort zone in the evening, while the indoor temperature is still above the human comfort zone, the gas-liquid phase change material flows in the opposite direction, transferring the excess indoor heat to the outdoors, cooling the indoor temperature down to the human comfort zone. Therefore, this wall does not require additional energy consumption and can better achieve automatic control of the room temperature. It is especially suitable for installation and use in high-altitude areas where the temperature is high during the day under direct sunlight but drops to very low temperatures at night.

[0032] A layer of infiltrating material is respectively arranged on the outward side wall surface of the external interlayer cavity 4 and the indoor side wall surface of the internal interlayer cavity 5, and the lower end of the infiltrating material layer is connected to the liquid storage interlayer cavity.

[0033] In this way, when the outer interlayer cavity and the inner interlayer cavity are heated respectively, the phase change material can be better vaporized.

[0034] Among them, the external interlayer cavity and the internal interlayer cavity are each provided with a heat conductivity enhancement structure, and the heat conductivity enhancement structure includes a heat conductive plate 8 attached to the outward side wall surface of the external interlayer cavity and the indoor side wall surface of the internal interlayer cavity, and also includes a heat conductive skeleton 9 connected to the surface of the heat conductive plate, and the wetting material layer is arranged on the surface of the heat conductive plate and the surface of the heat conductive skeleton.

[0035] In this way, heat conduction can be achieved more quickly in the external interlayer cavity and the internal interlayer cavity, the gasification and liquefaction rates of the phase change material can be accelerated, and the reaction rate of the wall heat transfer temperature control can be improved.

[0036] The heat conducting plate 8 and the heat conducting frame 9 are made of metal material or ceramic material, which can better improve the heat conduction efficiency.

[0037] The phase change material circulation flow channel is also provided with a high temperature barrier device, which is used to automatically cut off the phase change material circulation flow channel when the temperature is higher than the phase change temperature within a certain range.

[0038] In this way, when the gas-liquid phase change material in the phase change material circulation flow channel is completely vaporized (at this time, the temperature outside the room is usually higher than the human body's comfortable temperature in a large range, and the indoor temperature is at or above the human body's comfortable temperature in a small range), the temperature inside the channel will rise rapidly under the heating state. At this time, the phase change material circulation flow channel can be isolated by the high-temperature barrier device to prevent heat transfer between the inside and outside of the room through the gas circulation flow in the phase change material circulation flow channel. At this time, the wall can well block the transfer of heat inside and outside the room by the heat-insulating cavity between the outer wall and the inner wall.

[0039] Among them, the high-temperature barrier device includes a rectangular groove 10 located at the lowest position of the lower bottom surface of the liquid storage interlayer cavity and arranged along the width direction of the liquid storage interlayer cavity. A card plate 11 is horizontally arranged above the groove 10 in a matching manner. The two ends of the card plate 11 are fixed upward on the top surface of the liquid storage interlayer cavity through shape memory alloys 12. A partition skin cover 13 is also fixedly sleeved outside the card plate. The upper end of the partition skin cover 13 is fixed on the top surface of the liquid storage interlayer cavity and the two sides are arranged along the side walls of the liquid storage interlayer cavity in the width direction. When the shape memory alloy is below the deformation temperature, a connecting space for liquid to pass through is reserved between the card plate and the rectangular groove. When the shape memory alloy reaches the deformation temperature, it extends downward so that the card plate falls into the rectangular groove to form a partition. The deformation temperature of the shape memory alloy is 1-3°C higher than the phase change temperature of the gas-liquid phase change material.

[0040] In this way, when there is still liquid phase change material in the liquid storage interlayer cavity, the shape memory alloy will not be deformed, ensuring the connectivity of the liquid storage interlayer cavity. When the phase change material in the liquid storage interlayer cavity is completely vaporized, the temperature in the phase change material circulation flow channel will rise rapidly under the condition that the outdoor temperature continues to conduct heat inward. At this time, the shape memory alloy moves to extend downward, driving the card plate to be inserted downward into the rectangular groove, and the phase change material circulation flow channel is isolated by the partition leather cover, avoiding the indoor and outdoor heat transfer due to the circulation of gas. Therefore, the above-mentioned high-temperature barrier device has a simple, ingenious and reasonable structure, and can realize the isolation control of the phase change material circulation flow channel when needed without additional energy and power. Of course, in the implementation method, the high-temperature barrier device can also be directly implemented by an automatic temperature control electric switch device, but this will result in additional energy consumption.

Claims

1. A room temperature control method using a wall, in which when the indoor temperature is within the human comfort zone and the outdoor temperature is below the human comfort zone, the hollow structure inside the wall is used to block the heat transfer between the inside and outside of the wall, characterized in that: When the indoor temperature is below the human comfort zone and the outdoor temperature is above the human comfort zone, the flow of gas-liquid phase change materials is used to transfer the outdoor heat energy to the indoor area.

2. The room temperature control method using a wall as claimed in claim 1, characterized in that: In this method, when the indoor temperature is higher than the human comfort zone and the outdoor temperature is lower than the human comfort zone, the flow of gas-liquid phase change material is used to transfer indoor heat energy to the outdoors.

3. The room temperature control method using a wall as claimed in claim 1, characterized in that: The temperature range of the human body comfort zone is between 18°C ​​and 28°C.

4. The room temperature control method using a wall as claimed in claim 1, characterized in that: The method is implemented by an automatic temperature control wall structure, which includes an outer wall and an inner wall arranged vertically and horizontally at intervals, a heat-resistant cavity is formed between the outer wall and the inner wall, an external interlayer cavity is also arranged on the outer wall, and an internal interlayer cavity is arranged on the inner wall. The upper ends of the internal interlayer cavity and the external interlayer cavity are connected through an air interlayer cavity, and the lower ends of the internal interlayer cavity and the external interlayer cavity are connected through a liquid storage interlayer cavity to form a zigzag phase change material circulation flow channel, and the liquid storage interlayer cavity is filled with a gas-liquid phase change material, and the phase change temperature of the gas-liquid phase change material is at or exceeds the upper limit temperature of the temperature range of the human body comfort zone.

5. The room temperature control method using a wall as claimed in claim 4, characterized in that: A layer of wetting material is also arranged on the outward side wall surface of the external interlayer cavity and the indoor side wall surface of the internal interlayer cavity, and the lower end of the wetting material layer is connected to the liquid storage interlayer cavity.

6. The room temperature control method using a wall as claimed in claim 5, characterized in that: The outer interlayer cavity and the inner interlayer cavity are each provided with a heat conductivity enhancement structure, and the heat conductivity enhancement structure includes a heat conductive plate attached to the outward side wall surface of the outer interlayer cavity and the indoor side wall surface of the inner interlayer cavity, and also includes a heat conductive skeleton connected to the surface of the heat conductive plate, and the wetting material layer is arranged on the surface of the heat conductive plate and the surface of the heat conductive skeleton.

7. The room temperature control method using a wall as claimed in claim 6, characterized in that: The heat conducting plate and the heat conducting frame are made of metal material or ceramic material.

8. The room temperature control method using a wall as claimed in claim 4, characterized in that: The phase change material circulation flow channel is also provided with a high temperature barrier device, which is used to automatically cut off the phase change material circulation flow channel after the temperature is higher than the phase change temperature within a certain range.

9. The room temperature control method using a wall as claimed in claim 8, characterized in that: The high-temperature barrier device includes a rectangular groove located at the lowest position of the lower bottom surface of the liquid storage interlayer cavity and arranged along the width direction of the liquid storage interlayer cavity. A card plate is arranged horizontally above the groove in a matching manner. The two ends of the card plate are fixed upward on the top surface of the liquid storage interlayer cavity through shape memory alloy. A partition skin sleeve is also fixedly sleeved outside the card plate. The upper end of the partition skin sleeve is fixed on the top surface of the liquid storage interlayer cavity and the two sides are arranged along the side walls of the liquid storage interlayer cavity in the width direction. When the shape memory alloy is below the deformation temperature, a connecting space for liquid to pass through is reserved between the card plate and the rectangular groove. When the shape memory alloy reaches the deformation temperature, it extends downward so that the card plate falls into the rectangular groove to form a partition. The deformation temperature of the shape memory alloy is 1-3°C higher than the phase change temperature of the gas-liquid phase change material.

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