A room temperature control method using a wall

Abstract

The application discloses a room temperature control method using a wall body, and the method is characterized in that when the indoor temperature is in a human comfortable temperature range and the outdoor temperature is lower than the human comfortable temperature range, the hollow structure inside the wall body is used to block the heat transfer between the inside and the outside of the wall body; when the indoor temperature is lower than the human comfortable temperature range and the outdoor temperature is higher than the human comfortable temperature range, the flowing of the gas-liquid phase change material is used to transfer the outdoor heat energy to the indoor. The application has the advantages of not needing additional energy consumption and better utilizing the outdoor heat source to realize the indoor temperature control, and is especially suitable for the implementation and application in high-altitude areas with large diurnal temperature range.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of building indoor temperature control, and particularly relates to a room temperature control method realized by a wall. BACKGROUND

[0002] With the progress of society and the improvement of people's living quality, more and more people pursue a more comfortable living environment. The most significant factor affecting indoor living comfort is the control of indoor temperature. The conventional method for controlling indoor temperature includes installing an air conditioning system or a floor heating system, etc. However, such methods will cause a large energy loss.

[0003] The most common way to control indoor temperature without increasing additional energy loss is to use a hollow wall to insulate the room. In this way, the heat transfer between the indoor and outdoor is blocked when the outdoor is cold or hot, so as to ensure that the indoor temperature is in a more comfortable temperature range. However, when the indoor temperature is lower than the comfortable range of the human body and the outdoor temperature is higher, the heat transfer from the outdoor to the indoor is also blocked by the hollow wall, and additional heating equipment is needed to increase the temperature, resulting in energy loss and failure to fully utilize the natural heat source of the outdoor.

[0004] In addition, there are some technologies in the prior art that 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 discloses a phase change material wall structure with adjustable phase change temperature; CN200520047532.7 discloses a thermal insulation wall material containing phase change materials; CN201811074391.6 discloses a thermal insulation board with a phase change material interlayer and a wall using the thermal insulation board, etc. These patents belong to similar technical solutions. However, such walls that rely on phase change materials to store and release heat to regulate indoor temperature still have the following defects: 1. The volume of the phase change material will expand greatly due to vaporization, so the capacity of the phase change material in the wall is limited, resulting in limited heat storage and release temperature regulation performance. 2. The phase change material is usually used to achieve 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 temperature transfer effect cannot be achieved immediately.

[0005] Therefore, how to design a room temperature control method that can better utilize outdoor air energy to regulate indoor temperature has become a problem to be considered and solved by those skilled in the art. SUMMARY

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

[0007] To solve the above technical problems, the present application adopts the following technical solutions:

[0008] A room temperature control method using a wall, when the indoor temperature is in the human comfort zone temperature range and the outdoor temperature is lower than the human comfort zone temperature range, 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 lower than the human comfort zone temperature range and the outdoor temperature is higher than the human comfort zone temperature range, the flow of the gas-liquid phase change material is used to transfer the heat energy from the outside to the inside.

[0009] In this way, the method simultaneously uses the heat insulation effect of the hollow structure of the wall and the heat transfer effect of the flow of the phase change material, can maintain the isolation effect when it is necessary to isolate the heat conduction between the inside and outside, and can maintain the heat transfer effect when it is necessary to transfer the heat from the outside to the inside, so that no additional energy is consumed, and the outdoor air energy source is better utilized to realize the temperature regulation of the indoor.

[0010] Further, in the method, when the indoor temperature is higher than the human comfort zone temperature range and the outdoor temperature is lower than the human comfort zone temperature range, the flow of the gas-liquid phase change material is used to transfer the heat energy from the inside to the outside. In this way, the temperature regulation of the indoor can be better realized.

[0011] Further, the human comfort zone temperature range is between 18℃ and 28℃.

[0012] Further, the method is realized by an automatic temperature control wall structure, the automatic temperature control wall structure comprising an outer wall and an inner wall arranged vertically and horizontally, a heat blocking cavity being formed between the outer wall and the inner wall, an outer interlayer cavity being arranged on the outer wall, an inner interlayer cavity being arranged on the inner wall, the upper ends of the inner interlayer cavity and the outer interlayer cavity being communicated through a gas passing interlayer cavity, the lower ends of the inner interlayer cavity and the outer interlayer cavity being communicated through a liquid storage interlayer cavity and constituting a loop-shaped phase change material circulation flow channel, the liquid storage interlayer cavity being filled with a gas-liquid phase change material, the phase change temperature of the gas-liquid phase change material being at or above the upper limit temperature of the human comfort zone temperature range.

[0013] In this way, when the indoor temperature is within or below the human comfort temperature range and the outdoor temperature is below the human comfort temperature range (night or early morning period), the gas-liquid phase change material is in liquid state and is not heated, and the wall body uses its heat-insulating cavity to insulate heat transfer, thereby achieving heat preservation for the room interior. When the outdoor temperature rises to be above the human comfort temperature range and the indoor temperature is below the human comfort temperature range, the phase change material in the external interlayer cavity is heated and vaporized by the rising temperature of the external wall body, and the vaporized phase change material in the external interlayer cavity expands and flows upward through the upper air passage interlayer cavity to the internal interlayer cavity and the inner wall body, releases heat, and is liquefied after the temperature decreases, and then flows downward into the lower liquid storage interlayer cavity, thereby achieving heat transfer (morning period) and transferring heat from the outside to the room interior to raise the temperature to the comfort zone. When the outdoor temperature rapidly decreases to be within or below the human comfort temperature range in the evening and the indoor temperature is still above the human comfort temperature range, the gas-liquid phase change material flows reversely to conduct the excess heat in the room interior to the outside, thereby lowering the temperature in the room interior to the human comfort temperature range. Therefore, the wall body does not need to consume extra energy and can automatically regulate and control the temperature in the room interior, and is especially suitable for installation and use in high-altitude areas where the sun directly shines on the room in the daytime and the temperature is very low at night.

[0014] Further, the outer interlayer cavity and the inner interlayer cavity are each provided with a wicking material layer on the outer surface of the side wall thereof and the inner surface of the side wall thereof, respectively.

[0015] In this way, the vaporization of the phase change material can be better achieved when the outer interlayer cavity and the inner interlayer cavity are heated, respectively.

[0016] Further, the outer interlayer cavity and the inner interlayer cavity are each provided with a heat conduction enhancement structure, the heat conduction enhancement structure comprises a heat conduction plate attached to the outer surface of the side wall of the outer interlayer cavity and the inner surface of the side wall of the inner interlayer cavity, and further comprises a heat conduction framework connected to the surface of the heat conduction plate, and the wicking material layer is arranged on the surface of the heat conduction plate and the surface of the heat conduction framework.

[0017] In this way, heat conduction in the outer interlayer cavity and the inner interlayer cavity can be achieved more quickly, the vaporization and liquefaction rates of the phase change material can be accelerated, and the response rate of the wall body in heat transfer and temperature control can be improved.

[0018] Further, the heat conduction plate and the heat conduction framework are made of metal material or ceramic material, so that the heat conduction efficiency can be better improved.

[0019] Further, the phase change material circulation flow channel is further provided with a high-temperature blocking 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.

[0020] In this way, when the gas-liquid phase change material in the phase change material circulation flow channel is completely gasified (at this time, the outdoor temperature is usually higher than the human comfortable temperature by a large range, and the indoor temperature is at or also higher than the human comfortable temperature by a small range), the internal temperature of the channel under the heated state will quickly rise, and at this time, the high-temperature blocking device can be used to cut off the phase change material circulation flow channel, so as to avoid the heat transfer between the indoor and outdoor through the circulation of the gas in the phase change material circulation flow channel. At this time, the wall body can be well blocked by the heat-blocking cavity between the outer wall body and the inner wall body to block the heat transfer between the indoor and outdoor.

[0021] Further, the high-temperature blocking device comprises a rectangular groove arranged at the lowest position of the lower bottom surface of the liquid storage interlayer cavity along the width direction of the liquid storage interlayer cavity, a clamping plate horizontally arranged above the groove in a matched manner, both ends of the clamping plate fixed on the top surface of the liquid storage interlayer cavity by a shape memory alloy upwards, and a blocking skin sleeve further fixedly sleeved outside the clamping plate, the upper end of the blocking skin sleeve being fixed on the top surface of the liquid storage interlayer cavity and the two sides being arranged along the two side walls of the liquid storage interlayer cavity along the width direction. When the shape memory alloy is below the deformation temperature, a communication space for liquid passing between the clamping plate and the rectangular groove is left, when the shape memory alloy reaches the deformation temperature, it is stretched downwards to make the clamping plate fall into the rectangular groove to form a block, and the deformation temperature of the shape memory alloy is 1-3℃ higher than the phase change temperature of the gas-liquid phase change material.

[0022] In this way, when there is still liquid phase change material in the liquid storage interlayer cavity, the shape memory alloy will not deform, ensuring the communication of the liquid storage interlayer cavity. When the phase change material in the liquid storage interlayer cavity is completely gasified, under the condition that the outdoor temperature continues to conduct heat inward, the temperature in the phase change material circulation flow channel will quickly rise, at this time, the shape memory alloy is stretched downwards to pull the clamping plate downwards into the rectangular groove, and the blocking skin sleeve is used to block the phase change material circulation flow channel, so as to avoid the heat transfer between the indoor and outdoor due to the circulation of the gas. Therefore, the above-mentioned high-temperature blocking device has the advantages of simple, ingenious and reasonable structure, and can realize the blocking control of the phase change material circulation flow channel without additional energy power. Of course, in the embodiment, the high-temperature blocking device can also directly use an automatic temperature control electric switch device to realize, but this will cause additional energy consumption.

[0023] In summary, the present application has the advantages of not needing additional energy consumption and being able to better utilize the outdoor heat source to realize the indoor temperature regulation, and is particularly suitable for implementation and application in high-altitude areas with large diurnal temperature difference. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 This is a schematic diagram of the automatic temperature-controlled wall structure used during implementation.

[0025] Figure 2 for Figure 1 Enlarged structural diagram at point A in the middle. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to specific embodiments.

[0027] In specific implementation: A room temperature control method using walls. In this method, 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. The feature is that when the indoor temperature is below the human comfort zone and the outdoor temperature exceeds the human comfort zone, the flow of gas-liquid phase change material is used to transfer outdoor heat energy to the indoor temperature.

[0028] In this way, the method utilizes both the heat insulation effect of the hollow wall structure and the heat transfer effect of the phase change material flow. It can maintain the insulation effect when it is necessary to isolate the heat conduction between the inside and outside, and maintain the heat transfer effect when it is necessary to transfer heat from the outside to the inside. Therefore, no additional energy is required, and the outdoor air source heat source is better utilized to achieve indoor temperature control.

[0029] In practice, when the indoor temperature is above the human comfort zone and the outdoor temperature is below the human comfort zone, the flow of the gas-liquid phase change material is used to transfer indoor heat to the outdoors. This allows for better control of indoor temperature.

[0030] In practice, the temperature range of the human body's comfort zone is between 18℃ and 28℃.

[0031] In practice, this method relies on an automatic temperature-controlled wall structure; see [link / reference]. Figures 1-2 As shown, the automatic temperature-controlled wall structure includes an outer wall 1 and an inner wall 2 arranged vertically and horizontally at intervals. A heat-insulating cavity 3 is formed between the outer wall 1 and the inner wall 2. An external interlayer cavity 4 is also attached to the outer wall, and an internal interlayer cavity 5 is attached to the inner wall. The upper ends of the internal interlayer cavity 5 and the external interlayer cavity 4 are connected by an air-permeable interlayer cavity 6. The lower ends of the internal interlayer cavity and the external interlayer cavity are connected by a liquid-storage interlayer cavity 7, forming a U-shaped phase change material circulation channel. The liquid-storage interlayer cavity is filled with gas-liquid phase change material, and the phase change temperature of the gas-liquid phase change material is at or above the upper limit of the human comfort zone temperature range.

[0032] In this way, when the indoor temperature is within or below the human comfort temperature range and the outdoor temperature is below the human comfort temperature range (night or early morning period), the gas-liquid phase change material is in liquid state and is not heated, and the wall body uses its heat-insulating cavity to insulate heat transfer, thereby achieving heat preservation for the room interior. When the outdoor temperature rises to be above the human comfort temperature range and the indoor temperature is below the human comfort temperature range, the phase change material in the external interlayer cavity is heated by the rising temperature of the external wall body, and is vaporized. The vaporized phase change material in the external interlayer cavity is heated and expands upward and flows to the internal interlayer cavity and the inner wall body through the upper air passage interlayer cavity, releases heat, and is liquefied after the temperature decreases, and flows downward into the lower liquid storage interlayer cavity, thereby achieving heat transfer (morning period), and transferring the heat from the outside to the room interior to raise the temperature to the comfort zone. When the outdoor temperature rapidly decreases to be within or below the human comfort temperature range in the evening, and the indoor temperature is still above the human comfort temperature range, the gas-liquid phase change material flows reversely, conducts the excess heat in the room interior to the outside, and cools the room interior to rapidly decrease to the human comfort temperature range. Therefore, the wall body does not need to consume extra energy and can automatically regulate and control the temperature in the room interior, and is especially suitable for installation and use in high-altitude areas where the sun directly shines in the daytime and the temperature decreases to be very low at night.

[0033] The outer side wall surface of the external interlayer cavity 4 and the inner side wall surface of the internal interlayer cavity 5 are respectively provided with a layer of wicking material.

[0034] In this way, the external interlayer cavity and the internal interlayer cavity can be heated respectively, and the vaporization of the phase change material can be better achieved.

[0035] The external interlayer cavity and the internal interlayer cavity are respectively provided with a heat conduction enhancement structure. The heat conduction enhancement structure comprises a heat conduction plate 8 attached to the outer side wall surface of the external interlayer cavity and the inner side wall surface of the internal interlayer cavity, and a heat conduction framework 9 connected to the surface of the heat conduction plate. The wicking material layer is arranged on the surface of the heat conduction plate and the surface of the heat conduction framework.

[0036] In this way, heat conduction in the external interlayer cavity and the internal interlayer cavity can be more rapidly achieved, the vaporization and liquefaction rates of the phase change material can be accelerated, and the response rate of the wall body heat transfer temperature control can be improved.

[0037] The heat conduction plate 8 and the heat conduction framework 9 are made of metal materials or ceramic materials, so that the heat conduction efficiency can be better improved.

[0038] The phase change material circulation flow channel is further provided with a high-temperature blocking 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.

[0039] In this way, when the gas-liquid phase change material in the phase change material circulation flow channel is completely gasified (at this time, the temperature outside the room is usually higher than the human comfortable temperature by a large range, and the indoor temperature is at or also higher than the human comfortable temperature by a small range), the temperature inside the channel under the heated state will quickly rise, and at this time, the high-temperature blocking device can be used to block the phase change material circulation flow channel, so as to avoid the heat transfer between the indoor and outdoor through the circulation of the gas in the phase change material circulation flow channel. At this time, the wall body can be well blocked by the heat-blocking cavity between the outer wall body and the inner wall body to block the heat transfer between the indoor and outdoor.

[0040] The high-temperature blocking device comprises a rectangular groove 10 arranged at the lowest position of the lower bottom surface of the liquid storage interlayer cavity along the width direction of the liquid storage interlayer cavity, a clamping plate 11 horizontally arranged above the groove 10, shape memory alloys 12 fixed on the top surface of the liquid storage interlayer cavity at both ends of the clamping plate 11, and a blocking skin sleeve 13 fixed on the top surface of the liquid storage interlayer cavity at the upper end of the blocking skin sleeve 13 and arranged along the two side walls of the liquid storage interlayer cavity along the width direction. When the shape memory alloy is below the deformation temperature, a communication space for liquid passing between the clamping plate and the rectangular groove is left. When the shape memory alloy reaches the deformation temperature, it is stretched downward to make the clamping plate fall into the rectangular groove to form a block. The deformation temperature of the shape memory alloy is 1-3℃ higher than the phase change temperature of the gas-liquid phase change material.

[0041] In this way, when there is still liquid phase change material in the liquid storage interlayer cavity, the shape memory alloy will not deform, ensuring the communication of the liquid storage interlayer cavity. When the phase change material in the liquid storage interlayer cavity is completely gasified, and the outdoor temperature continues to conduct heat inward, the temperature in the phase change material circulation flow channel will quickly rise, and at this time, the shape memory alloy is stretched downward to pull the clamping plate downward into the rectangular groove, and the blocking skin sleeve is used to block the phase change material circulation flow channel, so as to avoid the heat transfer between the indoor and outdoor due to the circulation of the gas. Therefore, the above-mentioned high-temperature blocking device has a simple, ingenious and reasonable structure, and can realize the blocking control of the phase change material circulation flow channel without additional energy power. Of course, in the embodiment, the high-temperature blocking device can also directly use an automatic temperature control electric switch device to realize, but this will cause additional energy consumption.

Claims

1. A method for controlling the temperature of a room using a wall, wherein when the temperature in the room is within a range of temperatures that are comfortable for humans and the temperature outside is lower than the range of temperatures that are comfortable for humans, the hollow structure inside the wall is used to block the transfer of heat between the inside and the outside of the wall, characterized in that, When the indoor temperature is below the human comfort temperature range and the outdoor temperature is above the human comfort temperature range, the flowing of the gas-liquid phase change material is used to transfer the heat energy from the outdoor to the indoor. ​ The method is implemented by using an automatic temperature control wall structure, which comprises an outer wall and an inner wall arranged vertically and horizontally at intervals, a heat resistance cavity is formed between the outer wall and the inner wall, an outer interlayer cavity is arranged on the outer wall, an inner interlayer cavity is arranged on the inner wall, the upper ends of the inner interlayer cavity and the outer interlayer cavity are connected through an air passing interlayer cavity, the lower ends of the inner interlayer cavity and the outer interlayer cavity are connected through a liquid storage interlayer cavity to form a loop-shaped phase change material circulation channel, the liquid storage interlayer cavity is filled with gas-liquid phase change material, and the phase change temperature of the gas-liquid phase change material is at or above the upper limit of the human comfort temperature range. The phase change material circulation channel is further provided with a high-temperature blocking device, which is used to automatically cut off the phase change material circulation channel when the temperature is above the phase change temperature by a certain range. The high-temperature blocking device comprises a rectangular groove arranged in the lowest position of the lower bottom surface of the liquid storage interlayer cavity along the width direction of the liquid storage interlayer cavity, a clamping plate is horizontally arranged above the groove in a matched manner, the two ends of the clamping plate are fixed on the top surface of the liquid storage interlayer cavity through a shape memory alloy, a partition skin sleeve is further fixedly arranged outside the clamping plate, the upper end of the partition skin sleeve is fixed on the top surface of the liquid storage interlayer cavity and arranged along the two side walls of the liquid storage interlayer cavity along the width direction, a communication space for liquid passing is left between the clamping plate and the rectangular groove when the shape memory alloy is below the deformation temperature, the clamping plate falls into the rectangular groove to form a partition when the shape memory alloy reaches the deformation temperature and extends downward, and the deformation temperature of the shape memory alloy is 1-3 ℃ higher than the phase change temperature of the gas-liquid phase change material.

2. The method for controlling the temperature of a room using a wall according to claim 1, wherein, In the method, when the indoor temperature is above the human comfort temperature range and the outdoor temperature is below the human comfort temperature range, the flowing of the gas-liquid phase change material is used to transfer the heat energy from the indoor to the outdoor.

3. The method for controlling the temperature of a room using a wall according to claim 1, wherein, The human comfort temperature range is 18-28 ℃.

4. The method for controlling the temperature of a room using a wall according to claim 1, wherein, A layer of infiltration material is further arranged on the outer side wall surface of the outer interlayer cavity and the indoor side wall surface of the inner interlayer cavity.

5. The method for controlling the temperature of a room using a wall according to claim 4, wherein, A heat conduction enhancing structure is further arranged in the outer interlayer cavity and the inner interlayer cavity, the heat conduction enhancing structure comprises a heat conduction plate arranged on the outer side wall surface of the outer interlayer cavity and the indoor side wall surface of the inner interlayer cavity, and a heat conduction framework connected to the surface of the heat conduction plate, and the infiltration material layer is arranged on the surface of the heat conduction plate and the surface of the heat conduction framework.

6. The method for controlling the temperature of a room using a wall as claimed in claim 5, wherein, The heat conduction plate and the heat conduction framework are made of metal material or ceramic material.

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