A double-row louvered heat collection wall device and its usage method

Abstract

This invention discloses a double-row venetian blind heat-collecting wall device and its usage method, comprising a light-transmitting glass and a heat-storage wall, and two rows of venetian blinds disposed between an air gap formed by the light-transmitting glass and the heat-storage wall; one or more electric heating plates are provided at the top of the air gap; a phase change material is placed inside the air gap; the inner and outer rows of venetian blinds are respectively fixed to a first shaft and a second shaft via a rotating shaft, the two ends of the first shaft and the second shaft being fixed to the roof and the floor respectively; each outer row of venetian blinds has a solar panel on its front and a heat reflector on its back; each inner row of venetian blinds has a light reflector on its front and a solar panel on its back; both the first solar panel and the second solar panel are connected to the electric heating plates via wires. This invention can effectively avoid excessively high indoor temperatures in summer and low indoor temperatures in winter, improve photoelectric conversion efficiency, reduce energy conversion losses, and provide people with a comfortable living environment.

Description

Technical Field

[0001] This invention belongs to the field of green building technology, and in particular relates to a double-row louvered heat collection wall device and its usage method. Background Technology

[0002] The Trombe wall, also known as a heat-collecting wall, is the most typical structure of a passive solar house. It utilizes sunlight shining onto a glass-enclosed heat-storage wall, heating the air between the transparent cover and the thick outer surface of the wall. This air is then forced into the room through thermal pressure, supplying heat to the interior. Simultaneously, the wall itself releases heat into the room directly through heat conduction and stores some energy. At night, the energy stored in the wall is released back into the room. Conversely, the heat is lost to the outside through conduction, convection, and radiation via the glass cover. Heat-collecting wall solar houses are particularly suitable for regions in northern my country with abundant solar energy resources and large diurnal temperature variations, such as Tibet and Xinjiang. They will significantly improve living conditions and reduce heating energy consumption.

[0003] Thermal walls are effective for heating in cold winters and hot summers, such as Xinjiang, but they can cause excessively high indoor temperatures in summer. How to prevent thermal walls from causing excessive indoor temperatures in summer is receiving increasing attention.

[0004] For photovoltaic power generation technology, if photovoltaic cells are used solely for power generation, their photoelectric conversion efficiency can only reach 10% to 15%. The remaining 80% or more of the energy is converted into heat energy, which is dissipated into the surrounding environment, causing the cell temperature to rise and reducing the cell's power generation efficiency. In photovoltaic and solar thermal heating wall technologies on the market, photovoltaic panels are placed outdoors, which is not conducive to the system's utilization of solar heat, especially in cold regions during winter when outdoor temperatures are too low and the system suffers severe heat loss. Summary of the Invention

[0005] The purpose of this invention is to provide a double-row louvered heat collection wall device and its usage method, which can effectively solve the problems of excessively high indoor temperature in summer, low indoor temperature in winter, and energy loss.

[0006] The present invention provides a double-row louvered heat collection wall device, comprising a light-transmitting glass and a heat storage wall, and two rows of louvered blinds disposed between an air gap formed by the light-transmitting glass and the heat storage wall; the light-transmitting glass faces south, and the heat storage wall is located to the north of the light-transmitting glass.

[0007] Ventilation openings are provided at both the top and bottom of the translucent glass, and the two ventilation openings are respectively equipped with corresponding openable upper and lower outer baffles;

[0008] Ventilation openings are provided at both the top and bottom of the heat storage wall, and the upper and lower ventilation openings are respectively equipped with corresponding openable and closable inner upper baffles and inner lower baffles;

[0009] One or more electric heating plates are provided at the top of the air interlayer;

[0010] The air interlayer contains a phase change material with a phase change temperature of 25-35 degrees Celsius.

[0011] Each outer row of venetian blinds has a solar panel on its front side, i.e., the first solar panel, and a heat reflector on its back side.

[0012] Each inner row of venetian blinds has a light reflector on the front and a solar panel, i.e., a second solar panel, on the back.

[0013] Both the first and second solar panels are connected to the electric heating plate via wires.

[0014] The inner and outer rows of Venetian blinds are controlled to rotate by a first pull cord and a second pull cord, respectively, with one end of each cord extending into the room.

[0015] Furthermore, the inner Venetian blinds are installed behind the outer Venetian blinds at an angle of 25 to 45 degrees, that is, the angle between the line connecting the projection points of the second axis and the first axis on the floor and the north-south direction is 30 degrees.

[0016] Furthermore, one or more electric heating panels are located at the top between the translucent glass and the first row of venetian blinds; when there are multiple electric heating panels, they are arranged along an east-west direction.

[0017] Furthermore, the phase change material is located at the bottom of the air gap formed by the outer and inner venetian blinds, and is arranged along the east-west direction.

[0018] Furthermore, an air channel is left in the middle when the front and back of each Venetian blind slat are connected.

[0019] The method of using the above-mentioned double-row venetian blind heat collection wall device provided by the present invention is applicable to winter daytime. The outer upper baffle and outer lower baffle are closed, and the inner upper baffle and inner lower baffle are opened. The outer venetian blinds and inner venetian blinds are controlled by the first pull rope and the second pull rope, so that the first solar panel on the outer venetian blinds and the second solar panel on the inner venetian blinds are tilted towards the light-transmitting glass.

[0020] The method of using the above-mentioned double-row louvered heat collection wall device provided by the present invention is suitable for use on winter nights. All baffles are closed, and the outer and inner louvered slats are controlled by the first and second pull ropes so that the outer louvered slats are parallel to the heat storage wall and the heat reflector is facing the heat storage wall.

[0021] The method of using the above-mentioned double-row venetian blind heat collection wall device provided by the present invention is applicable to summer daytime. The method involves closing the outer lower baffle and the inner upper baffle, and opening the outer upper baffle and the inner lower baffle. The outer and inner venetian blinds are controlled by the first and second pull ropes, so that the first solar panel of the outer venetian blind is tilted towards the light-transmitting glass, and the light reflector of the inner venetian blind is tilted towards the light-transmitting glass.

[0022] The method of using the above-mentioned double-row venetian blind heat collection wall device provided by the present invention is suitable for use on summer nights. The inner upper baffle and inner lower baffle are closed, and the outer upper baffle and outer lower baffle are opened. The outer venetian blinds and inner venetian blinds are controlled by the first pull rope and the second pull rope, so that the heat reflector of the outer venetian blinds is parallel and facing the light-transmitting glass. The second solar panel of the inner venetian blinds is tilted towards the light-transmitting glass.

[0023] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0024] This invention can effectively avoid excessively high indoor temperatures in summer and low indoor temperatures in winter, improve photoelectric conversion efficiency, reduce energy conversion losses, and provide people with a comfortable living environment. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the double-row louvered heat collection wall device in Example 1;

[0026] Figure 2 This is a schematic diagram of the overall structure of the outer Venetian blinds in Example 1;

[0027] Figure 3 This is a schematic diagram of the inner venetian blind slats in Example 1;

[0028] Figure 4 This is an enlarged schematic diagram of the air gap between the two rows of venetian blinds in Example 1;

[0029] Figure 5 This is a schematic diagram showing the relative positions of the outer and inner Venetian blinds in Example 1;

[0030] Figure 6 This is a schematic diagram of the structure of the outer Venetian blind slats in Example 1;

[0031] Figure 7 This is a schematic diagram of the structure of the inner venetian blind slats in Example 1;

[0032] Figure 8 This is a schematic diagram showing the connection between the first solar panel, the heat reflector, and the outer venetian blind in Example 1;

[0033] Figure 9 This is a control diagram of the first pull rope and the first rotating shaft in Embodiment 1;

[0034] Figure 10 This is a schematic diagram of the operation of the heat collection wall device during the daytime in winter in Example 2;

[0035] Figure 11 This is a schematic diagram of the operation of the heat collection wall device in Example 2 during a winter night;

[0036] Figure 12 This is a schematic diagram of the operation of the heat collection wall device in Example 2 during the summer daytime;

[0037] Figure 13 This is a schematic diagram of the operation of the heat collection wall device in Example 2 during summer nights.

[0038] In the picture:

[0039] 100 - Transparent glass, 101 - Upper outer baffle, 102 - Lower outer baffle;

[0040] 200 - External Venetian blind slats, 201 - First axis, 202 - First solar panel, 203 - Heat reflector, 204 - First rotating axis, 205 - First pull cord.

[0041] 300 - Inner Venetian blind slats; 301 - Second axis; 302 - Light reflector; 303 - Second solar panel; 304 - Second rotating axis; 305 - Second pull cord.

[0042] 400 - Thermal storage wall; 401 - Inner upper baffle; 402 - Inner lower baffle;

[0043] 500-Electric heating plate;

[0044] 600 - Phase change materials;

[0045] 701 - First conductor, 702 - Second conductor. Detailed Implementation

[0046] To more clearly illustrate the technical solution and effects of the present invention, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are merely embodiments of the present invention. For those skilled in the art, other drawings and other embodiments can be obtained based on these drawings without any creative effort.

[0047] It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. Furthermore, the technical features involved in the various embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

[0048] The embodiments of the present invention are described in detail below. These embodiments are implemented based on the technical solution of the present invention, and provide detailed implementation methods and specific operation processes. However, the scope of protection of the present invention is not limited to the following embodiments.

[0049] Example 1

[0050] like Figures 1-4 As shown, the double-row venetian blind heat-collecting wall device in this embodiment consists of, from the outside to the inside, a translucent glass 100, an outer venetian blind 200, an inner venetian blind 300, and a heat-collecting wall 400. The outer venetian blind 200 is fixed to the first shaft 201, and the inner venetian blind 300 is fixed to the second shaft 301. The two ends of the first shaft 201 and the second shaft 301 are respectively fixed to the roof and the floor. In this embodiment, both the first shaft 201 and the second shaft 301 are hollow shafts. Preferably, the inner venetian blind 300 is installed at a 30-degree angle behind the outer venetian blind 200, that is, the angle between the line connecting the projection points of the second shaft 301 and the first shaft 201 on the floor and the north-south direction is 30 degrees. See details below. Figure 5 As shown.

[0051] In practical application, the heat collection wall device should face south, with the transparent glass 100 facing south and the heat storage wall 400 located north of the transparent glass 100. In this invention, an air gap exists between the transparent glass 100 and the heat storage wall 400. Two rows of louvered blinds are placed within this air gap, and an electric heating plate 500 is positioned at the top of the air gap. Specifically, the electric heating plate 500 is positioned along a north-south direction between the transparent glass 100 and the outer louvered blinds 200. A phase change material 600 is placed between the two rows of louvered blinds along an east-west direction. In this embodiment, the electric heating plate 500 is a mica electric heating plate, and the phase change material 600 is Na(CH3COO)·3H2O or tetradecyl alcohol-fatty acid phase change material with a phase change temperature of 29 degrees Celsius. The number of electric heating plates 500 and phase change materials 600 is determined based on the coldness of the region; the colder the region, the more units should be used.

[0052] In this embodiment, the light-transmitting glass 100 is high-purity silica glass, which has good light transmittance across the entire spectrum from ultraviolet to infrared, with a visible light transmittance of over 95%, and a maximum transmittance of over 85% in the ultraviolet spectral region. Warm-edge Swiggle tape is used as the sealing edge for the insulated glass window.

[0053] See Figures 6-7Each outer venetian blind slat 200 has a solar panel on its front side, designated as the first solar panel 202; and a heat reflector 203 on its back side. In this embodiment, the outer venetian blind slat 200 is made of aluminum alloy, the first solar panel 202 is a monocrystalline silicon solar panel, and the heat reflector is a ZnO-Fe2O3-Na2O-P2O5 composite material. Screw holes are drilled in the outer venetian blind slat 200, and then the first solar panel 202 and the heat reflector 203 are fixed to the outer venetian blind slat 200 using screws. See [details omitted]. Figure 8 In this embodiment, the outer venetian blind slat 200 is made into a rectangular plate shape.

[0054] Each inner venetian blind slat 300 has a light reflector 302 on its front side and a solar panel, referred to as the second solar panel 303, on its back side. In this embodiment, the inner venetian blind slat 300 is made of aluminum alloy, the second solar panel 303 is a monocrystalline silicon solar panel, and the light reflector 302 is made of TiO2 / PC composite material. The method by which the light reflector 302 and the second solar panel 303 are fixed to the inner venetian blind slat 300 is the same as that for the outer venetian blind slat 200.

[0055] Each first solar panel 202 is connected to a first wire 701 located within the first shaft 201. The output end of the first wire 701 is connected to the electric heating plate 500 to supply power to the electric heating plate 500. Each second solar panel 303 is connected to a second wire 702 located within the second shaft 301. The output end of the first wire 702 is also connected to the electric heating plate 500 to supply power to the electric heating plate 500.

[0056] See Figure 9 The outer Venetian blind 200 is controlled by a first pull cord 205. The outer Venetian blind 200 is mounted on the first shaft 201 via a first rotating shaft 204 fixed to the first shaft 201. The first pull cord 205 is connected to the first rotating shaft 204, and controls the first rotating shaft 204, thereby switching the front and back of the outer Venetian blind 200. Similarly, the inner Venetian blind 300 is controlled by a second pull cord 305. The inner Venetian blind 300 is mounted on the second shaft 301 via a second rotating shaft 304 fixed to the second shaft 301. The second pull cord 305 is connected to the second rotating shaft 304, and controls the second rotating shaft 304, thereby switching the front and back of the inner Venetian blind 300.

[0057] Preferably, an air channel is left in the middle when the inner and outer venetian blinds are connected on the front and back sides, so as to facilitate the dissipation of heat from the solar panel on the front and improve the photoelectric conversion efficiency. Specifically, the inner and outer venetian blinds are hollow cuboid structures with openings at two opposite ends, thus forming an air channel, as shown in [reference needed]. Figures 6-7 .

[0058] For aesthetic and tidying purposes, the first pull rope 205 and the second pull rope 305 are respectively located within the first shaft 201 and the second shaft 301. For ease of use, portions of the first pull rope 205 and the second pull rope 305 extend into the interior.

[0059] The light-transmitting glass 100 is located on the south side of the air gap, and is provided with an upper outer baffle 101 and a lower outer baffle 102 above and below it, respectively; the heat storage wall 400 is located on the north side of the air gap, and is provided with an upper inner baffle 401 and a lower inner baffle 402 above and below it, respectively.

[0060] Example 2

[0061] This embodiment provides a method of using the double-row louvered heat collection wall device. During use, the switching modes of the outer upper baffle 101, outer lower baffle 102, inner upper baffle 401, inner lower baffle 402, outer louvered curtain 200, and inner louvered curtain 300 are manually adjusted according to the four working modes of winter daytime, winter nighttime, summer daytime, and summer nighttime.

[0062] See Figure 10 The arrows in the diagram indicate the direction of airflow. In the daytime operating mode during winter, the outer upper baffle 101 and outer lower baffle 102 on the translucent glass 100 are closed, while the inner upper baffle 401 and inner lower baffle 402 on the heat storage wall 400 are opened. The outer venetian blinds 200 and inner venetian blinds 300 are controlled via the first pull cord 205 and the second pull cord 305, respectively, so that the first solar panel 202 on the outer venetian blinds 200 and the second solar panel 303 on the inner venetian blinds 300 face the translucent glass 100 to absorb solar energy, thereby generating heat and electricity. The electricity is transmitted to the electric heating plate 500 through the first conductor 701 and the second conductor 702. Due to the good light transmission performance of the translucent glass 100, the temperature in the air gap between the translucent glass 100 and the heat storage wall 400 will rise. When the temperature rises to the phase change temperature of the phase change material 600, the phase change material 600 begins to undergo a phase change, storing heat through this phase change. At this time, the air density in the air gap decreases due to the increased temperature, while the air density in the room is higher due to the lower temperature. Based on the "chimney effect", the hot air in the air gap flows into the room from the inner upper baffle 401, and the cold air in the room flows into the air gap from the inner lower baffle 402, thus exchanging heat.

[0063] See Figure 11In the winter nighttime operating mode, all baffles on the translucent glass 100 and the heat storage wall 400 (i.e., outer upper baffle 101, outer lower baffle 102, inner upper baffle 401, and inner lower baffle 402) are closed, forming a sealed cavity in the air gap. The first pull cord 205 controls the rotation of the outer venetian blind 200, making it parallel to the heat storage wall 400, with the heat reflector 203 facing the heat storage wall 400. This reduces the heat loss from the heat storage wall 400 to the air gap. In this operating mode, there are no requirements for the orientation of the inner venetian blind 300. The heat stored in the air gap during the day heats the indoor air through the heat storage wall 400. When the temperature inside the air gap drops to the phase change temperature of the phase change material 600, the phase change material 600 begins to release heat through phase change to maintain the temperature inside the air gap and simultaneously supply heat to the heat storage wall 400.

[0064] See Figure 12 The arrows in the diagram indicate the direction of airflow. During the daytime operating mode in summer, the outer lower baffle 102 on the translucent glass 100 and the inner upper baffle 401 on the heat storage wall 400 are closed, while the outer upper baffle 101 on the translucent glass 100 and the inner lower baffle 402 on the heat storage wall 400 are opened. The front of the outer venetian blind 200, i.e., the first solar panel 202, is tilted towards the translucent glass 100 to absorb solar energy and generate heat and electricity. The generated electricity is transferred to the electric heating plate 500 to generate heat. The front of the inner venetian blind 300, i.e., the light reflector 302, is tilted towards the translucent glass 100 to reflect solar energy, reducing the heat gained by the heat storage wall 400 and reducing excessive heat transfer into the room. The temperature inside the air gap gradually increases. When the temperature rises to the phase change temperature of the phase change material 600, the phase change material 600 begins to undergo a phase change, storing heat through this phase change.

[0065] During the summer daytime, the outdoor air temperature to the south of the house is higher than the indoor temperature, but the indoor air temperature is heated, making people feel uncomfortable. However, the indoor temperature is higher than the outdoor air temperature to the north. In summer daytime conditions, a large amount of heat is rapidly generated within the air gap of the wall structure of this invention, creating a "chimney effect" that continuously draws indoor air out. If the windows on the north side of the house are opened at this time, the cooler air from the north quickly enters the room. This allows the cooler air from the north to lower the indoor air temperature, making people feel comfortable.

[0066] See Figure 13In summer nighttime operation mode, the inner upper baffle 401 and inner lower baffle 402 are closed, and the outer upper baffle 101 and outer lower baffle 102 are opened. The heat reflector 203 of the outer venetian blinds is controlled to be parallel and directly facing the light-transmitting glass 100 via the first pull cord 205. The second solar panel 303 of the inner venetian blinds 300 is controlled to tilt towards the light-transmitting glass 100. When the temperature inside the air gap drops to the phase change temperature of the phase change material 600, the phase change material 600 begins to release heat through phase change. The heat accumulated by the heat-collecting wall during the day begins to dissipate heat to the air gap at night. If the temperature in the air gap is higher than that outside, airflow will form between the outside and the air gap, carrying away the heat from the heat-collecting wall and reducing the indoor heat load. If the outdoor temperature is higher than the temperature of the air gap but lower than the temperature of the heat-collecting wall, airflow will also form between the air gap and the outside, carrying away the heat from the heat-collecting wall and reducing the indoor heat load. If the outdoor temperature is higher than both the air gap and the heat collection wall, the heat reflector can reduce the transfer of outdoor heat to the indoor environment at night until a balance is reached.

[0067] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A double-row louvered heat collection wall device, which is arranged facing south, characterized in that: It includes a light-transmitting glass and a heat-storing wall, as well as two rows of louvered blinds located between the air gap formed by the light-transmitting glass and the heat-storing wall; the light-transmitting glass faces south, and the heat-storing wall is located to the north of the light-transmitting glass. Ventilation openings are provided at both the top and bottom of the translucent glass, and the two ventilation openings are respectively equipped with corresponding openable upper and lower outer baffles; Ventilation openings are provided at both the top and bottom of the heat storage wall, and the upper and lower ventilation openings are respectively equipped with corresponding openable and closable inner upper baffles and inner lower baffles; One or more electric heating plates are provided at the top of the air interlayer; The air interlayer contains a phase change material with a phase change temperature of 25-35 degrees Celsius. Each outer row of venetian blinds has a solar panel on its front side, i.e., the first solar panel, and a heat reflector on its back side. Each inner row of venetian blinds has a light reflector on the front and a solar panel, i.e., a second solar panel, on the back. Both the first and second solar panels are connected to the electric heating plate via wires. The inner and outer rows of Venetian blinds are controlled to rotate by a first pull cord and a second pull cord, respectively, with one end of each pull cord extending into the room. The outer Venetian blind slats are controlled by the first pull cord. The outer Venetian blind slats are mounted on the first shaft via a first rotating shaft fixed to the first shaft. The first pull cord is connected to the first rotating shaft, and the first pull cord controls the first rotating shaft, thereby switching the front and back of the outer Venetian blind slats. The inner venetian blinds are installed at an angle of 25 to 45 degrees behind the outer venetian blinds. One or more electric heating panels are located at the top between the light-transmitting glass and the first row of venetian blinds; when there are multiple electric heating panels, the multiple electric heating panels are arranged along an east-west direction; The phase change material is disposed at the bottom of the air gap formed by the outer venetian blinds and the inner venetian blinds, and is arranged along the east-west direction. An air passage is left in the middle when the front and back of each Venetian blind slat are connected; The outer Venetian blind is fixed on the first axis, and the inner Venetian blind is fixed on the second axis. The two ends of the first axis and the second axis are fixed to the roof and the floor, respectively. Both the first axis and the second axis are hollow shafts. The inner Venetian blind is installed behind the outer Venetian blind at an angle of 30 degrees, that is, the angle between the line connecting the projection points of the second axis and the first axis on the floor and the north-south direction is 30 degrees.

2. A method of using a double-row louvered heat-collecting wall device, based on the double-row louvered heat-collecting wall device of claim 1, characterized in that: This method of use is applicable during the daytime in winter. Close the outer upper baffle and outer lower baffle, open the inner upper baffle and inner lower baffle, and control the outer and inner Venetian blinds with the first and second pull cords so that the first solar panel on the outer Venetian blinds and the second solar panel on the inner Venetian blinds are tilted towards the light-transmitting glass.

3. A method of using a double-row louvered heat-collecting wall device, based on the double-row louvered heat-collecting wall device of claim 1, characterized in that: This method of use is suitable for winter nights. Close all the baffles and control the outer and inner Venetian blinds with the first and second pull cords so that the outer Venetian blinds are parallel to the heat storage wall and the heat reflector is facing the heat storage wall.

4. A method of using a double-row louvered heat-collecting wall device, based on the double-row louvered heat-collecting wall device of claim 1, characterized in that: This method of use is suitable for summer daytime use. Close the outer lower baffle and the inner upper baffle, and open the outer upper baffle and the inner lower baffle. Control the outer Venetian blinds and the inner Venetian blinds with the first and second pull ropes, so that the first solar panel of the outer Venetian blinds is tilted towards the light-transmitting glass, and the light reflector of the inner Venetian blinds is tilted towards the light-transmitting glass.

5. A method of using a double-row louvered heat-collecting wall device, based on the double-row louvered heat-collecting wall device of claim 1, characterized in that: This method of use is suitable for summer nights. Close the inner upper and inner lower baffles, and open the outer upper and outer lower baffles. Control the outer and inner Venetian blinds with the first and second pull cords so that the heat reflector of the outer Venetian blinds is parallel and facing the light-transmitting glass. Tilt the second solar panel of the inner Venetian blinds towards the light-transmitting glass.

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