An active double-layer embedded pipe water-permeable wooden wall

Abstract

The present application discloses an active double-layer embedded pipe water-permeable wooden wall, which relates to the field of new energy utilization technology. In summer, the sky radiation panel is used for cooling, effectively delaying the rise of indoor temperature; in winter, the solar water heater is used for heating, reducing the temperature difference between the wall and the room, and reducing the building energy consumption throughout the year. The device includes a wall assembly, a sky radiation panel and a solar thermal collection assembly; the wall assembly includes an exterior wall finishing layer, a summer phase change layer, an insulation layer group, a winter phase change layer and an interior wall finishing layer; the summer phase change layer is embedded with a first pipe network; the winter phase change layer is embedded with a second pipe network connected to the first pipe network; the water outlet of the sky radiation panel is connected to the first pipe network, and the water inlet of the sky radiation panel is connected to the second pipe network; the sky radiation panel can cool the water entering it; the water outlet of the solar thermal collection assembly is connected to the second pipe network, and the water inlet of the solar thermal collection assembly is connected to the first pipe network; the solar thermal collection assembly can heat the water entering it.

Description

Technical Field

[0001] The present application relates to the technical field of new energy utilization, and in particular to an active double-layer embedded pipe water-permeable wooden wall. Background Art

[0002] Wood is a naturally available, green, renewable resource. When used as a building material, it not only has many advantages such as good thermal insulation, strong seismic resistance, and a short processing cycle, but also absorbs carbon throughout its life cycle, making it a "negative carbon" material. The carbon dioxide emissions of wooden buildings are lower than those of buildings made of other materials, and they have great application potential.

[0003] Phase change layers utilize the property of materials to absorb or release large amounts of heat during phase changes to store cold or heat. They offer high energy storage density, high thermal efficiency, and constant temperature during the phase change process. They are easy to use and require no energy input. Combining a phase change layer with an external envelope can significantly increase its heat capacity. By absorbing and storing heat during the solid-to-liquid transition, the layer lowers the surrounding temperature. Once the surrounding air temperature drops, the layer can then return from liquid to solid, releasing the stored heat. This solid-liquid cycle achieves energy conservation in buildings. However, a complete heat storage and release cycle is difficult to achieve with a phase change layer alone. Therefore, it can be combined with renewable energy sources.

[0004] Solar energy has the advantages of being widely distributed, having relatively mature utilization technology and being inexhaustible. Research on solar thermal collection technology has always been the focus of research in the field of building energy conservation in my country.

[0005] The temperature of outer space is about 4K, which is an excellent natural cold source. The atmosphere is transparent to the infrared band of 8 to 13 microns, which is the "atmospheric window". The principle of sky radiation cooling technology is to increase the emissivity of this band to increase the efficiency of radiation heat transfer, thereby reducing the temperature of the heat source.

[0006] When using a cold or heat source for cooling or heating within a building, high temperature requirements are often met. However, the temperature of the building envelope is often higher than that of the interior in summer and lower in winter. This creates an opportunity for many low-quality heat and cold sources, one of which is the embedded pipe structure. The concept of the embedded pipe structure is to embed pipes within concrete slabs or brick layers, using circulating water to transfer heat or cold. The wall itself acts as an energy storage device, reducing external energy loss and lowering building energy consumption, resulting in excellent energy-saving effects.

[0007] Currently, there are numerous research cases involving phase change thermal storage technology, embedded tube technology, sky radiation cooling technology, and solar thermal collection technology, but relatively few products integrate these technologies to meet the varying load demands of winter and summer. Furthermore, most embedded tube structures are single-layer, which cannot adequately meet the comfort requirements of indoor occupants under year-round use conditions. However, given the varying temperature levels of different wall components, the recycled water after a single cycle still has value for further use. Therefore, this application proposes an active double-layer embedded tube water-permeable wall system, which offers higher energy efficiency and can be used year-round, creating a comfortable indoor thermal environment year-round. Summary of the Invention

[0008] An embodiment of the present application provides an active double-layer embedded pipe water-permeable wooden wall, which is cooled by sky radiation panels in summer. Cold water first passes through the first pipe network to store cold for the phase change layer in summer, and then flows through the second pipe network to absorb indoor heat, effectively delaying the increase in indoor temperature; in winter, solar water heaters are used for heating. Hot water first passes through the second pipe network to radiate heating to the room and stores heat for the phase change layer in winter, and then flows through the second pipe network to form a "thermal barrier" inside the wall, reducing the temperature difference between the wall and the room, preventing the loss of indoor heat to the outside, and reducing the building energy consumption throughout the year.

[0009] To achieve the above-mentioned objectives, an embodiment of the present application provides an active double-layer embedded pipe water-permeable wooden wall, including a wall component, a sky radiation panel and a solar thermal collection component; the wall component includes an exterior wall finishing layer, a summer phase change layer, an insulation layer group, a winter phase change layer and an interior wall finishing layer arranged in sequence from the outside to the inside; the summer phase change layer is embedded with a first pipe network; the winter phase change layer is embedded with a second pipe network connected to the first pipe network; the water outlet of the sky radiation panel is connected to the first pipe network, and the water inlet of the sky radiation panel is connected to the second pipe network; the sky radiation panel can cool the water entering it; the water outlet of the solar thermal collection component is connected to the second pipe network, and the water inlet of the solar thermal collection component is connected to the first pipe network; the solar thermal collection component can heat the water entering it.

[0010] Furthermore, the summer phase change layer and the winter phase change layer are both made of wood impregnated with liquid paraffin; the phase change temperature of the summer phase change layer is 32°C, and the phase change temperature of the winter phase change layer is 20°C.

[0011] Furthermore, the first pipe network and the second pipe network each include a plurality of capillaries arranged in parallel, the upper parts of the plurality of capillaries are connected through a top capillary trunk tube, and the lower parts are connected through a bottom capillary trunk tube.

[0012] Furthermore, the plurality of capillaries are straight tube sections arranged in the vertical direction and are arranged at equal intervals in the horizontal direction.

[0013] Furthermore, the plurality of capillaries are all sinusoidal continuous curved wavy structures.

[0014] Furthermore, the wall assembly also includes a first OBS board and a second OBS board; the first OBS board is located between the exterior wall finishing layer and the summer phase change layer; the second OBS board is located between the insulation layer group and the winter phase change layer.

[0015] Furthermore, the insulation layer group includes a wooden keel and insulation material filled therein.

[0016] Furthermore, the solar thermal collection assembly includes a solar water heater and a water tank; the water tank is connected to the second pipe network through a water supply main pipe; the water tank is connected to the first pipe network through a return water main pipe; a first switch valve is provided on the water supply main pipe; and a circulating water pump and a second switch valve are provided on the return water main pipe.

[0017] Furthermore, a first auxiliary pipeline is provided between the inlet of the first switch valve and the outlet of the second switch valve, and a third switch valve is provided on the first auxiliary pipeline; a second auxiliary pipeline is provided between the outlet of the first switch valve and the inlet of the second switch valve, and a fourth switch valve is provided on the second auxiliary pipeline.

[0018] Furthermore, the water storage tank is also connected to the domestic hot water pipeline and the water supply pipe.

[0019] Compared with the prior art, this application has the following beneficial effects:

[0020] 1. The active double-layer embedded pipe water-passing wooden wall of the embodiment of the present application is provided with a sky radiation panel and a solar water heater, and a summer phase change layer embedded with a first pipe network and a winter phase change layer embedded with a second pipe network are provided in the wooden structure wall. In the summer, cooling is performed by the sky radiation panel, and cold water first passes through the first pipe network to store cold for the summer phase change layer, and then flows through the second pipe network to absorb indoor heat, effectively delaying the increase in indoor temperature; heating is performed by the solar water heater in the winter, and hot water first passes through the second pipe network to radiate heating to the room and stores heat for the winter phase change layer, and then flows through the second pipe network to form a "thermal barrier" in the wall, reducing the temperature difference between the wall and the room, and preventing the loss of indoor heat to the outside.

[0021] 2. The active double-layer embedded pipe water-permeable wooden wall in the embodiment of the present application can meet the two different load requirements of cooling and heating in winter and summer, effectively improving the performance of the wooden structure enclosure, contributing to the creation of a comfortable indoor thermal environment, and reducing the building energy consumption throughout the year.

[0022] 3. Compared with the traditional single-tube embedded wall, when the position of the water pipe in the wall is determined, only the heat transfer medium within the corresponding temperature range can be used. The active double-layer embedded pipe water-through wooden wall in the embodiment of the present application can allocate the heat transfer medium according to its actual grade, which has higher flexibility and comfort.

[0023] 4. The active double-layer embedded pipe water-permeable wooden wall in the embodiment of the present application overcomes the shortcomings of existing embedded pipe structure walls, wooden walls and phase change walls, and improves the thermal comfort in the building throughout the year. At the same time, the wall makes full use of renewable energy sources such as solar energy and natural low-temperature cold sources in space to produce energy. While retaining the aesthetics of wooden structure buildings, it has significant energy-saving and emission reduction effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0025] Figure 1 This is a structural diagram of an active double-layer embedded pipe water-permeable wooden wall according to an embodiment of the present application;

[0026] Figure 2 This is a schematic structural diagram of a wall assembly in an active double-layer embedded pipe water-through wooden wall according to an embodiment of the present application;

[0027] Figure 3 This is a schematic diagram of the exploded structure of the wall assembly in the active double-layer embedded pipe water-permeable wooden wall according to an embodiment of the present application;

[0028] Figure 4 This is a top cross-sectional view of a wall assembly in an active double-layer embedded pipe water-through wooden wall according to an embodiment of the present application;

[0029] Figure 5 This is a schematic diagram of the structure of the wooden keel in the active double-layer embedded pipe water-permeable wooden wall according to an embodiment of the present application;

[0030] Figure 6 This is a schematic structural diagram of the first pipe network in the active double-layer embedded pipe water-through wooden wall in an embodiment of the present application. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0032] In the description of this application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0033] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "install", "connect", and "connect" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0034] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. Throughout this application, unless otherwise specified, "plurality" means two or more.

[0035] Reference Figure 1 An embodiment of the present application provides an active double-layer embedded pipe water-through wooden wall, including a wall component 1, a sky radiation panel 2 and a solar heat collection component 3.

[0036] Reference Figure 2 The wall assembly 1 includes an exterior wall finishing layer 11, a first OBS board 12, a summer phase change layer 13, an insulation layer group 14, a second OBS board 15, a winter phase change layer 16 and an interior wall finishing layer 17, which are arranged in sequence from the outside to the inside.

[0037] The summer phase change layer 13 and the winter phase change layer 16 are both made of wood impregnated with liquid paraffin; the phase change temperature of the summer phase change layer 13 is 32°C, and the phase change temperature of the winter phase change layer 16 is 20°C.

[0038] Reference Figure 1 and Figure 5The insulation layer group 14 includes a wooden keel 141 and an insulation material 142 filled therein. The wooden structure material can be reasonably changed according to the local wood, preferably poplar or pine. The insulation material 142 can be prepared by foamed polyurethane or polystyrene board. Therefore, since wood is a porous material, its thermal insulation performance is better than that of concrete, which can prevent the loss of indoor heat in winter. Combined with the heat release of the phase change layer 16 and the embedded pipe in winter, it can play a role in keeping warm and cold. It can also effectively isolate the hot air outside in summer. Combined with the heat absorption of the phase change layer 13 and the embedded pipe in summer, it can keep the room comfortable and cool.

[0039] Reference Figures 1 to 4 Grooves are provided in both the summer phase change layer 13 and the winter phase change layer 16 , wherein a first pipe network 131 is embedded in the groove of the summer phase change layer 13 , and a second pipe network 161 communicating with the first pipe network 131 is embedded in the groove of the winter phase change layer 16 .

[0040] The first OBS board 12 can protect the capillary tube and play a supporting role in the entire wall. The second OBS board 15 can level the insulation layer and play a supporting role in the entire wall.

[0041] Reference Figure 3 and Figure 6 First pipe network 131 and second pipe network 161 each include multiple capillary tubes 18 arranged in parallel. The upper portions of the capillary tubes 18 are connected via a top capillary trunk tube 181, and the lower portions are connected via a bottom capillary trunk tube 182. The bottom capillary trunk tube 182 of first pipe network 131 and the bottom capillary trunk tube 182 of second pipe network 161 are connected in series. To improve thermal conductivity, in some embodiments, first pipe network 131 and second pipe network 161 both utilize copper tubes with a diameter of DN10.

[0042] Specifically, in some embodiments, the plurality of capillaries 18 are straight tube sections arranged in the vertical direction and are equidistantly arranged in the horizontal direction, thereby ensuring the stability of heat exchange and forming a stable temperature distribution inside the wall.

[0043] In other embodiments, the capillaries 18 are all sinusoidally curved and wavy, thereby achieving a larger heat exchange area and better heat exchange performance. It should be noted that in this case, the grooves of the summer phase change layer 13 or the winter phase change layer 16 should also be adapted to the pipes. The specific processing method is conventional and will not be described in detail here.

[0044] Reference Figure 1The sky radiation panel 2 is made of metal material and is placed on the roof at a certain angle. A transparent glass cover is provided on the top surface to reduce convection and radiation losses in the surrounding environment and achieve a higher cooling effect. The sky radiation panel 2 can cool the water entering it. The side of the sky radiation panel 2 facing the sky is coated with a PET coating with high infrared emissivity. The water outlet of the sky radiation panel 2 is connected to the first pipe network 131, and the water inlet of the sky radiation panel 2 is connected to the second pipe network 161. It should be noted that the sky radiation panel 2 can work all day in the summer to circulate the cold water supply pipe network, and is closed all day in the winter.

[0045] The solar thermal collection assembly 3 includes a solar water heater 31 and a water storage tank 32, which are interconnected. The solar water heater 31 heats the water entering it and transfers it to the water storage tank 32 for storage. The water outlet of the water storage tank 32 is connected to the second pipe network 161 via a water supply main pipe 33. The water inlet of the water storage tank 32 is connected to the first pipe network 131 via a return water main pipe 34. The water storage tank 32 is also connected to a domestic hot water pipe 35 and a water supply pipe 36. Both the domestic hot water pipe 35 and the water supply pipe 36 are equipped with on / off valves.

[0046] A first switch valve 331 and a circulating water pump 332 are provided on the water supply main 33, and a second switch valve 341 is provided on the return water main 34. A first auxiliary pipeline is provided between the inlet of the first switch valve 331 and the outlet of the second switch valve 341, and a third switch valve 37 is provided on the first auxiliary pipeline. A second auxiliary pipeline is provided between the outlet of the first switch valve 331 and the inlet of the second switch valve 341, and a fourth switch valve 38 is provided on the second auxiliary pipeline. It should be noted that the solar water heater 31 can operate during the daytime all year round, circulating hot water in the winter supply network and supplying it indoors for domestic hot water use in the summer. In addition, all exposed pipes can be coated with insulation material to reduce heat loss along the way during transportation.

[0047] The working principle of the embodiment of this application is as follows:

[0048] In winter, the switch valve of the sky radiation panel 2 is closed, the sky radiation panel 2 stops working, and the switch valve of the solar water heater 31 is opened, and the first switch valve 331 and the second switch valve 341 are opened at the same time, and the third switch valve 37 and the fourth switch valve 38 are kept closed.

[0049] During sunny days, the circulating water heated by the solar water heater 31 enters the water storage tank 32 for storage. The hot water in the water storage tank 32 is first sent to the second pipe network 161 near the indoor side, where it heats the inner wall and provides radiant heat to the indoor environment. Some of this heat is directly transferred to the indoor space through the inner wall, while some is absorbed by the phase change layer 16 in winter and released at night when temperatures are lower or when the hot water supply is cut off, extending the heating period. Subsequently, after the initial heat release, the hot water flows through the first pipe network 131 near the outdoor side, where the heat is absorbed by the cooler outer wall, raising the overall internal temperature of the wall and further reducing heat loss from the indoor space to the outdoors. If the water level in the loop is insufficient, it can be replenished through the water replenishment pipe 36.

[0050] In summer, close the on / off valve of the solar water heater 31 and open the on / off valve on the domestic water pipe. This stops the hot water from flowing to the wall and instead provides domestic hot water for indoor use. Open the on / off valve of the sky radiation panel 2 to start operation. Simultaneously, open the third on / off valve 37 and the fourth on / off valve 38, while keeping the first on / off valve 331 and the second on / off valve 341 closed.

[0051] During the day, the summer phase change layer 13 absorbs radiant heat from the exterior wall, mitigating the rise in indoor temperature. The sky radiant panels 2 effectively reflect sunlight while simultaneously providing radiant cooling, cooling the circulating water to a temperature below the phase change temperature of the summer phase change layer 13. The cold water is then routed to the first pipe network 131 near the exterior, removing heat from the summer phase change layer 13 to aid cooling. This water also forms a "thermal barrier" within the wall, removing some of the heat that enters the wall and reducing the impact of the high outdoor temperature on the indoor thermal environment. At night, when the sky temperature drops, the sky radiant panels 2 can lower the circulating water temperature even further. The cold water is first routed to the first pipe network 131 near the exterior. The low-temperature cold water stores cold in the summer phase change layer 13, allowing it to fully solidify and prepare for heat absorption during the next day. This water also assists in cooling the wall. After this initial cooling process, the cold water then flows through the second pipe network 161 near the interior, absorbing heat from the interior and creating a comfortable thermal environment.

[0052] The embodiments of the present application overcome the shortcomings of existing wooden structure walls and phase change walls, improve the thermal comfort in the building throughout the year, and at the same time, the wall utilizes renewable energy sources such as solar energy and natural low-temperature cooling sources in space, while retaining the aesthetics of wooden structure buildings, and has significant energy-saving and emission reduction effects.

[0053] This is only a specific embodiment of the present application, but the scope of protection of this application is not limited to this. Any changes or replacements within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. An active double-layer embedded pipe water-permeable wooden wall, characterized in that: The invention comprises a wall assembly, a sky radiation panel and a solar heat collecting assembly; the wall assembly comprises an exterior wall finishing layer, a summer phase change layer, a thermal insulation layer group, a winter phase change layer and an interior wall finishing layer arranged in sequence from the outside to the inside; the summer phase change layer is embedded with a first pipe network; the winter phase change layer is embedded with a second pipe network; The water outlet of the sky radiant panel is connected to the first end of the first pipe network, and the water inlet of the sky radiant panel is connected to the first end of the second pipe network; the second end of the first pipe network is connected to the second end of the second pipe network; the sky radiant panel is capable of cooling the water entering it; The water outlet of the solar thermal collection assembly is in communication with the first end of the second pipe network, and the water inlet of the solar thermal collection assembly is in communication with the first end of the first pipe network; the solar thermal collection assembly is capable of heating the water entering it; The solar heat collection assembly supplies hot water to the first pipe network and the second pipe network for circulation in winter; The sky radiation panels work in summer and supply cold water to the first pipe network and the second pipe network for circulation.

2. The active double-layer embedded pipe water-permeable wooden wall according to claim 1 is characterized in that: The summer phase change layer and the winter phase change layer are both made of wood impregnated with liquid paraffin; the phase change temperature of the summer phase change layer is 32°C, and the phase change temperature of the winter phase change layer is 20°C.

3. The active double-layer embedded pipe water-permeable wooden wall according to claim 2 is characterized in that: The first pipe network and the second pipe network each include a plurality of capillaries arranged in parallel, the upper portions of the plurality of capillaries being connected via a top capillary trunk pipe, and the lower portions being connected via a bottom capillary trunk pipe.

4. The active double-layer embedded pipe water-permeable wooden wall according to claim 3 is characterized in that: The plurality of capillaries are all straight tube sections arranged in the vertical direction and are arranged at equal intervals in the horizontal direction.

5. The active double-layer embedded pipe water-permeable wooden wall according to claim 3 is characterized in that: The plurality of capillaries are all sinusoidal continuous curved wavy structures.

6. The active double-layer embedded pipe water-permeable wooden wall according to claim 2, characterized in that: The wall assembly further includes a first OBS board and a second OBS board; the first OBS board is located between the exterior wall finishing layer and the summer phase change layer; the second OBS board is located between the insulation layer group and the winter phase change layer.

7. The active double-layer embedded pipe water-permeable wooden wall according to claim 1, characterized in that: The thermal insulation layer group includes a wooden keel and thermal insulation materials filled therein.

8. The active double-layer embedded pipe water-permeable wooden wall according to claim 1 is characterized in that: The solar thermal collection assembly includes a solar water heater and a water tank; the water tank is connected to the second pipe network through a water supply main pipe; the water tank is connected to the first pipe network through a return water main pipe; the water supply main pipe is provided with a first switch valve and a circulating water pump; the return water main pipe is provided with a second switch valve.

9. The active double-layer embedded pipe water-permeable wooden wall according to claim 8, characterized in that: A first auxiliary pipeline is provided between an end of the first switch valve away from the second pipeline network and an end of the second switch valve close to the first pipeline network, and a third switch valve is provided on the first auxiliary pipeline; a second auxiliary pipeline is provided between an end of the first switch valve close to the second pipeline network and an end of the second switch valve away from the first pipeline network, and a fourth switch valve is provided on the second auxiliary pipeline.

10. The active double-layer embedded pipe water-permeable wooden wall according to claim 8, characterized in that: The water storage tank is also communicated with a domestic hot water pipeline and a water supply pipe.

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