Multi-tube heat storage type dual-channel ventilation control system driven by solar energy

Abstract

The present invention discloses a multi-tube heat storage type double-channel ventilation control system driven by solar energy, which relates to the field of building ventilation temperature control. The system includes an outer wall surface, a heat collection wall surface, a ceiling and a building inner wall. The ceiling is connected to the outer wall surface to form an integral outer frame, which is located outside the building whose temperature is to be controlled. The heat collection wall surface faces the outer wall surface, and there is an outer air duct between the two. There is an inner air duct between the heat collection wall surface and the building inner wall. The outer wall surface includes PC solar panels. The heat collection wall surface includes a plurality of heat storage columns arranged vertically and neatly. There is a heat storage column thermal insulation layer outside it, and a heat collection plate is arranged inside the heat storage array formed by the heat storage columns. The heat storage columns are installed on the fixing plates at the upper and lower positions. At each heat exchange place of the inner and outer air ducts, a plurality of ventilation openings are provided, and corresponding electromagnetic valves are equipped, and their opening and closing are controlled by an automatic control system. The present invention makes full use of solar energy and geothermal energy to achieve the goals of energy conservation, emission reduction and building low-carbonization while ensuring indoor thermal comfort.

Description

Technical Field

[0001] The present invention relates to the field of building ventilation temperature regulation, and particularly to a multi-tube heat storage type double-channel ventilation regulation system driven by solar energy. Background Art

[0002] A solar wall is essentially a passive solar collector directly attached to the wall of a room, usually on the south-facing exterior wall.

[0003] A traditional solar wall mainly consists of a transparent glass, a heat-absorbing wall surface (heat-collecting wall body), and an adiabatic wall surface. There is a cavity between the glass wall surface and the heat-absorbing wall surface. Solar radiation passes through the glass wall surface and enters the cavity, where it is absorbed by the heat-collecting wall body. After the heat-collecting wall body absorbs solar radiation, its temperature rises, heating the gas in the cavity, causing the gas temperature to rise and its density to decrease. The gas then flows vertically upward along the cavity and is discharged outdoors through the exhaust vent. Due to the partial gas being discharged outdoors under the action of heat pressure, a local negative pressure state appears in the cavity, and indoor gas enters the cavity through the air inlet to supplement the gas. In this way, the passive natural ventilation effect of the solar wall can be achieved.

[0004] However, the traditional solar wall has the following disadvantages: The heat storage materials of the heat-collecting wall body are mostly traditional engineering materials such as bricks and concrete, which are relatively heavy and the heat storage capacity needs to be improved; The heat-collecting wall body mostly uses dark coatings, with poor light transmission performance and affecting the building aesthetics; Ordinary glass covers are fragile and cannot solve the problem of summer sunshade. Therefore, it is necessary to improve on the basis of the existing temperature regulation of the traditional solar wall to achieve a better temperature regulation effect in buildings. Summary of the Invention

[0005] In order to solve the problems of poor temperature regulation effect and low energy efficiency caused by materials and structures of the existing traditional solar wall, the present invention provides a multi-tube heat storage type double-channel ventilation regulation system driven by solar energy.

[0006] The present invention is realized through the following technical solutions: A multi-tube heat storage type double-channel ventilation control system driven by solar energy, comprising an outer wall surface, a heat collection wall surface, a ceiling and a building inner wall. The ceiling is connected to the outer wall surface to form an integral outer frame, which is located outside the building whose temperature is to be controlled and surrounds the heat collection wall surface; the outer wall surface faces south and is located on the sunny side; the heat collection wall surface faces the outer wall surface, and there is an outer air duct between the two, and there is an inner air duct between the heat collection wall surface and the building inner wall; the outer wall surface comprises a PC sunlight plate, and the PC sunlight plate is transparent; the heat collection wall surface comprises a plurality of vertically and neatly arranged heat storage columns, a heat storage column heat insulation layer is arranged outside the heat storage columns, and a heat collection plate is arranged inside the heat storage array formed by the heat storage columns; the heat storage columns are installed on fixing plates at upper and lower positions, the fixing plates at upper and lower positions are respectively connected to the ceiling and the ground, a heat collection side upper air inlet is arranged between the fixing plate at the upper position and the ceiling, a heat collection side lower air inlet is arranged between the fixing plate at the lower position and the ground, and a heat collection side middle ventilation opening is arranged at the middle position of the heat collection plate; an outer side upper air inlet is arranged at the position corresponding to the outer air duct on the ceiling; an inner side upper air inlet is arranged between the building inner wall and the ceiling, an inner side lower air inlet is arranged between the building inner wall and the ground, and an inner side middle ventilation opening is also arranged at the middle of the building inner wall.

[0007] A multi-tube heat storage type double-channel ventilation control system driven by solar energy designed by the present invention realizes temperature control according to the functional requirements of buildings under different seasonal working conditions. The system includes an outer wall surface, a heat collection wall surface, a ceiling and a building inner wall. The outer wall surface is used for dust prevention and protection. The heat collection wall surface is used for heat collection. The building inner wall is provided with certain ventilation openings and is communicated with an inner air duct. The ceiling is connected to the outer wall surface to form an integral outer frame, which is located outside the building whose temperature is to be controlled and surrounds the heat collection wall surface. The outer wall surface faces south and is located on the sunny side. The heat collection wall surface faces the outer wall surface. The sun shines through the outer wall surface and hits the heat collection wall surface, enabling the heat collection wall surface to store heat. An outer air duct is arranged between the heat collection wall surface and the outer wall surface, and an inner air duct is arranged between the heat collection wall surface and the building inner wall. The traditional air flow channel is divided into the outer air duct and the inner air duct by heat storage columns. On the one hand, it is beneficial to optimize the air flow organization and effectively improve the indoor air quality. On the other hand, it is beneficial to reduce the heat transfer of the building structure at night in winter, significantly reduce the heat loss, and achieve the heat preservation goal. The specific structure of the outer wall surface is as follows: it includes a PC sunlight plate, which is transparent and has the advantages of high light transmittance, strong heat insulation effect, strong chemical resistance and long service life. The sun rays shine on the PC sunlight plate and enter the outer air duct. The heat collection wall surface collects the solar radiation heat. The heat collection wall surface includes multiple vertically and neatly arranged heat storage columns. Heat collection is realized through the heat storage columns. A heat storage column thermal insulation layer is arranged outside the heat storage columns. A heat collection plate is arranged inside the heat storage array formed by the heat storage columns. The heat collection plate connects different heat storage columns to store and exchange heat to a greater extent, extend the heating time at night in winter, and maintain the indoor temperature within a suitable range. The installation of the heat storage columns is realized through fixing plates at the upper and lower positions, and the fixing plates at the upper and lower positions are respectively connected to the ceiling and the ground. A plurality of air vents are arranged on each wall surface, wall or heat collection wall surface communicated with the inner and outer air ducts. Through these air vents, the air flow in the inner and outer air duct cavities is realized, so as to realize the heat flow. The specific air vent settings are as follows: a heat collection side upper air vent is arranged between the upper fixing plate and the ceiling, a heat collection side lower air vent is arranged between the lower fixing plate and the ground, and a heat collection side middle ventilation opening is arranged at the middle position of the heat collection plate; an outer side upper air vent is arranged at the position corresponding to the outer air duct on the ceiling; an inner side upper air vent is arranged between the building inner wall and the ceiling, an inner side lower air vent is arranged between the building inner wall and the ground, and an inner side middle ventilation opening is also arranged in the middle of the building inner wall. The heat collection wall surface absorbs solar radiation and the temperature rises, heating the gas in the inner and outer air ducts. The gas is heated and generates buoyancy, flowing upward along the cavity, and is discharged to the outside or flows back into the room again according to the opening and closing of each air vent of the system; the cavity presents a negative pressure state due to the outflow of part of the gas, prompting the indoor gas to flow into the inner and outer air ducts through multiple air vents, so as to complete the gas supplement, and thus realize the passive natural ventilation effect of the system by circulation.

[0008] Preferably, the ventilation control system further includes a tunnel ventilation duct, which includes buried pipes. The buried pipes are provided with tunnel ventilation air inlets for air intake. The outside of the buried pipes is wrapped with a tunnel ventilation insulation layer. There is an outside lower air inlet between the air outlet of the buried pipes and the outside air duct. The air outlet of the buried pipes enters the indoor fresh air flow channel through the indoor fresh air inlet. The indoor fresh air flow channel is buried under the ground surface, and its air outlet is connected to the building interior through a fresh air diffuser. Geothermal energy utilizes the characteristics that the temperature of the soil at a certain depth is lower than the average temperature of the hottest month and higher than the average temperature of the coldest month to preheat and precool the indoor air, effectively combining solar energy and geothermal energy, making the heat exchange of the system more sufficient and achieving the functional requirements under different working conditions. Tunnel ventilation is sent into the ventilation duct through the outside lower air inlet under the winter daytime working condition, rises due to heat under the action of solar radiation, and brings heat into the room to achieve the goal of passive heating in winter; tunnel ventilation flows through the indoor fresh air flow channel and is sent into the room through the fresh air diffuser under the summer working condition to supplement fresh air for the room.

[0009] Preferably, the heat storage column is a vacuum heat storage column, including a heat storage pipe. A vacuum tube is sleeved outside the heat storage pipe. The vacuum heat storage column uses calcium chloride hexahydrate as the phase change material, and 3.0% barium hydroxide is contained in the calcium chloride hexahydrate, with a phase change temperature of 28.1°C. As the heat storage column absorbs solar radiation and the temperature rises, reaching the phase change temperature, calcium chloride hexahydrate changes from a solid state to a liquid state, storing a large amount of heat; as the temperature drops at night, calcium chloride hexahydrate changes from a liquid state to a solid state, releasing a large amount of latent heat absorbed during the day. Calcium chloride hexahydrate has the advantages of large phase change enthalpy value, comfortable phase change temperature, and strong heat storage capacity.

[0010] Preferably, the PC solar panel is processed from polycarbonate resin, with high light transmittance, strong heat insulation effect, strong chemical resistance, and long service life; the heat insulation effect is significantly improved, reducing heat loss, and it has better temperature adaptability, impact resistance, long service life, reducing investment as well as operation and maintenance costs.

[0011] Preferably, a dust-proof film is pasted on the outside of the PC solar panel. The dust-proof film is transparent, which can effectively prevent dust accumulation on the outer surface of the glass layer and further ensure the radiant heat gain of the solar energy heat storage panel.

[0012] Preferably, electromagnetic solenoid valves are provided at the upper air inlet of the heat collection side, the lower air inlet of the heat collection side, the middle ventilation opening of the heat collection side, the upper air inlet on the outside, the upper air inlet on the inside, the lower air inlet on the inside, the middle ventilation opening on the inside, and the lower air inlet on the outside, and are controlled to open and close through the electromagnetic solenoid valves. Further, a temperature sensor and an automatic control device are provided in the building interior where the temperature is to be regulated; by monitoring the indoor temperature, the operation of the automatic control components is controlled, enabling the system to switch working conditions under different weather conditions and achieving a balance between indoor thermal comfort and energy conservation.

[0013] Preferably, green plants are cultivated on the ground outside the building above the buried pipes; in the summer working condition, the transpiration of plant leaves is used to reduce the ground temperature, the temperature of the tunnel air further drops, providing a more sufficient cold source and accelerating the dissipation of the waste heat in the room in summer.

[0014] Compared with the prior art, the present invention has the following beneficial effects: The multi-tube heat storage type double-flow channel ventilation control system driven by solar energy provided by the present invention, ① The present invention uses PC sunlight plates to replace ordinary glass covers, significantly improving the heat insulation effect, reducing heat loss, and having better temperature adaptability, impact resistance, long service life, and reducing investment as well as operation and maintenance costs; an automatic control system is set up, enabling the system to automatically switch working modes under different seasonal working conditions without manually adjusting the air valves, saving labor resources and achieving intelligence. The system plans to cultivate green plants above the buried pipes, and in summer, the transpiration of plant leaves is used to reduce the surface temperature, thereby further reducing the temperature of the tunnel air and providing a more sufficient cold source; ② The present invention designs a tunnel air heat exchange and air supply component, taking advantage of the fact that at a certain depth, the temperature of the soil in the hottest month is lower than the annual average temperature, and the temperature in the coldest month is higher than the annual average temperature, effectively utilizing the geothermal energy and giving full play to the pre-cooling and pre-heating effects of the tunnel air to meet the cooling and heating requirements in different seasons. The system uses parallelly arranged vacuum heat storage columns to replace the traditional heat storage wall, selects calcium chloride hexahydrate as the phase change material, utilizes the latent heat released by the phase change of the material, and connects the heat collection plates between different heat storage columns to store and exchange heat to a greater extent, extending the heating time at night in winter and maintaining a suitable indoor temperature to achieve the heat preservation goal. The multi-tube heat storage structure of the system effectively improves the problems of volatility and delay existing in solar radiation; ③ A double-air duct air flow channel is adopted. In the summer working condition, the double-air duct plays a role in strengthening natural ventilation, accelerating the outflow of indoor air and the supplement of fresh tunnel air, being beneficial to the optimization of the air flow organization and improving the indoor air quality; in the winter working condition, the double-air duct plays a role in strengthening heat exchange, and is beneficial to reducing the heat transfer of the building structure at night in winter, significantly reducing the heat loss and achieving the heat preservation goal.

[0015] Under the current social and technological background, the present invention has the following significance: ① In China, building energy consumption accounts for 35% of the total energy consumption, and energy conservation in the building sector is a key point for the country's energy conservation and emission reduction. The energy consumption of the heating, ventilation, and air conditioning (HVAC) system accounts for about 65% of the total building energy consumption. Therefore, the utilization of renewable energy in buildings is of great significance for building energy conservation. How to reasonably utilize clean energy in buildings and how to innovatively design the heating and ventilation system to achieve building energy conservation and low-carbonization are important directions for the development of the HVAC industry; ② Solar energy and geothermal energy are both clean energies that are easy to utilize. The earth tunnel ventilation uses shallow geotechnical layers as natural cold and heat sources, exchanges heat with the soil, and sends the pre-heated or cooled air into the room. On the one hand, the system directly uses solar energy to heat the air in the tunnel, thereby bearing the indoor heating and cooling loads; on the other hand, the system combines solar radiation with natural ventilation and uses the thermal pressure or wind pressure caused by the temperature difference to drive the natural flow of indoor air, thereby meeting the requirements of thermal comfort and air quality. It is an environmentally friendly passive ventilation energy-saving technology; ③ As one of the widely used renewable energies at present, solar energy has disadvantages such as volatility, delay, and instability, and is restricted by multiple natural conditions such as day and night, seasons, geographical latitude, and altitude, with a low utilization efficiency. The proposal of this work can effectively solve problems such as the instability and delay of solar energy. The system uses parallelly arranged vacuum heat storage columns to replace the traditional heat storage wall, and connects the heat storage columns through a heat collection plate to further enhance the heat storage capacity of the system. The heat generated by the sunlight during the day is stored, and the latent heat is released through the phase change of the material at night, so as to maintain a relatively comfortable temperature at night in winter. The system uses a double-flow channel to replace the traditional single-flow channel, further optimizing the air flow organization of the system. The distinction between the inner and outer flow channels has good benefits for heat preservation at night in winter.

[0016] The feasibility of the present invention is as follows: ① The present invention utilizes solar thermal radiation heat to achieve natural ventilation in summer and supplement indoor heat in winter, reducing the consumption of non-renewable energy. China has rich solar energy resources. In more than two-thirds of the country's total area, the annual sunshine hours are greater than 2000 hours, and the annual radiation is above 5000 MJ / ㎡. Except for some plateau areas in Guizhou, all regions in China are areas where solar energy resources can be utilized. By comprehensively utilizing solar energy and fully realizing the comprehensive utilization of solar thermal and photovoltaic energy, the energy consumption of buildings can be effectively reduced, and the use of non-renewable energy can be decreased. ② Shallow geothermal energy, as a new type of high-quality clean energy, has the characteristics of being renewable, widely distributed, large in reserves, clean and environmentally friendly, economical and affordable, strong in safety, and convenient to utilize. China has had a history of nearly 30 years in using shallow geothermal energy. Through the absorption and reference of foreign advanced technologies and the continuous accumulation of experience, the development and utilization technologies of shallow geothermal energy have been continuously innovated and improved. In the hottest month, the temperature of the soil at a certain depth is actually lower than the annual average temperature. While in the coldest month, the temperature at this point is higher than the annual average temperature. Therefore, the heat exchange between geothermal energy and air can be utilized to pre-cool the summer air and pre-heat the winter air, achieving the cold and heat supplement under different working conditions; ③ The present invention can be applied to (1) industrial workshops (2) data rooms and computer rooms (3) rural buildings (4) small railway station waiting halls (5) small highway service areas (6) tourist scenic area service centers; it has a wide range of application prospects and good economic and ecological benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a structural cross-sectional view of the present invention.

[0018] Figure 2 is a structural schematic diagram of the heat collection wall surface of the present invention.

[0019] Figure 3 is a structural schematic diagram of the vacuum heat storage column of the present invention.

[0020] Figure 4 is a schematic diagram of the air flow situation when the present invention is in working condition one.

[0021] Figure 5 is a schematic diagram of the air flow situation when the present invention is in working condition two (heat release stage).

[0022] Figure 6 is a schematic diagram of the air flow situation when the present invention is in working condition two (heat preservation stage).

[0023] Figure 7 is a schematic diagram of the air flow situation when the present invention is in working condition three.

[0024] Figure 8It is a schematic diagram of the air flow situation when the present invention is in working condition four.

[0025] The markings in the figure are as follows: 1 - PC sunlight panel; 2 - dust-proof film; 3 - heat storage column; 4 - heat storage column thermal insulation layer; 5 - outer air duct; 6 - outer upper air inlet; 7 - heat collection side upper air inlet; 8 - inner upper air inlet; 9 - outer lower air inlet; 10 - heat collection side lower air inlet; 11 - inner lower air inlet; 12 - fixing plate; 13 - heat collection plate; 14 - building inner wall; 15 - inner air duct; 16 - heat storage pipe; 17 - vacuum tube; 18 - buried pipe; 19 - tunnel ventilation air inlet; 20 - tunnel ventilation thermal insulation layer; 21 - heat collection side middle ventilation opening; 22 - inner middle ventilation opening; 23 - indoor fresh air inlet; 24 - indoor fresh air flow channel; 25 - fresh air diffuser; 26 - ceiling. Specific embodiments

[0026] The present invention will be further described below in conjunction with specific embodiments.

[0027] A multi-tube heat storage type double-flow channel ventilation control system driven by solar energy, as Figure 1 and Figure 2 shown: It includes an outer wall surface, a heat collection wall surface, a ceiling 26 and a building inner wall 14. The ceiling 26 is connected to the outer wall surface to form an integral outer frame, which is located on the outer side of the building whose temperature is to be controlled and surrounds the heat collection wall surface; the outer wall surface faces south and is located on the sunny side; the heat collection wall surface faces the outer wall surface, and there is an outer air duct 5 between the two, and there is an inner air duct 15 between the heat collection wall surface and the building inner wall 14; the outer wall surface includes a PC sunlight panel 1, and the PC sunlight panel 1 is transparent; the heat collection wall surface includes a plurality of vertically and neatly arranged heat storage columns 3, and a heat storage column thermal insulation layer 4 is provided outside the heat storage columns 3, and a heat collection plate 13 is provided inside the heat storage array formed by the heat storage columns 3; the heat storage columns 3 are installed on the fixing plates 12 at the upper and lower positions, and the fixing plates 12 at the upper and lower positions are respectively connected to the ceiling 26 and the ground. There is a heat collection side upper air inlet 7 between the fixing plate 12 at the upper position and the ceiling 26, and a heat collection side lower air inlet 10 between the fixing plate 12 at the lower position and the ground. A heat collection side middle ventilation opening 21 is provided at the middle position of the heat collection plate 13; an outer upper air inlet 6 is provided at the position on the ceiling 26 corresponding to the outer air duct 5; an inner upper air inlet 8 is provided between the building inner wall 14 and the ceiling 26, and an inner lower air inlet 11 is provided between the building inner wall 14 and the ground. An inner middle ventilation opening 22 is also provided in the middle of the building inner wall 14.

[0028] In this embodiment, the following preferred solutions are also adopted: The system further includes a tunnel air duct, the tunnel air duct includes a buried pipe 18, the buried pipe 18 is provided with a tunnel air inlet 19 for air intake, the outside of the buried pipe 18 is wrapped with a tunnel air heat preservation layer 20, and an outside lower air inlet 9 is provided between the air outlet of the buried pipe 18 and the outside air duct 5. The air outlet of the buried pipe 18 enters the indoor fresh air flow channel 24 through the indoor fresh air inlet 23. The indoor fresh air flow channel 24 is buried under the ground surface, and its air outlet is communicated with the building interior through a fresh air diffuser 25. The heat storage column 3 is a vacuum heat storage column. As Figure 3 shown, it includes a heat storage pipe 16, a vacuum tube 17 is sleeved outside the heat storage pipe 16. The vacuum heat storage column uses calcium chloride hexahydrate as the phase change material, and 3.0% barium hydroxide is contained in the calcium chloride hexahydrate, and the phase change temperature is 28.1 °C. The PC sunlight panel 1 is processed from polycarbonate resin. A dust-proof film 2 is pasted on the outside of the PC sunlight panel 1, and the dust-proof film 2 is transparent. Electromagnetic on-off valves are provided at the heat collection side upper air inlet 7, heat collection side lower air inlet 10, heat collection side middle ventilation opening 21, outside upper air inlet 6, inside upper air inlet 8, inside lower air inlet 11, inside middle ventilation opening 22 and outside lower air inlet 9, and the opening and closing are controlled by the electromagnetic on-off valves. A temperature sensor and an automatic control device are provided in the building interior where the temperature is to be regulated. Green plants are cultivated on the ground outside the building above the buried pipe 18.

[0029] In the specific working process of this embodiment, according to the differences in seasons and day and night, the system is divided into four working conditions: winter day, winter night, summer day, and summer night, which are sequentially named as working condition one, working condition two, working condition three, and working condition four.

[0030] 1) For the winter day working condition (working condition one), the system operates in the heating mode, and the operation adjustment is as Figure 4 shown. At this time, the outside upper air inlet 6, the heat collection side middle ventilation opening 21, the inside middle ventilation opening 22, and the indoor fresh air inlet 23 are kept closed, and the rest of the air inlets are kept open; the tunnel air enters the system through the outside lower air inlet 9 and is fully mixed with the indoor cold air flowing out through the inside lower air inlet 11, playing a role in preheating the indoor air. Under the action of solar radiation, the heat storage column 3 absorbs heat and the temperature rises. The mixed air flow is divided at the heat storage column 3, part flows into the inner air duct 15, and part flows into the outside air duct 5. The heat storage column 3 heats the air in the inner air duct; the solar radiation and the heat storage column 3 act together to heat the air in the outside air duct. Under the action of the density difference and wind pressure, the system forms a double-air-duct air circulation flow, and the heat is brought into the room through the heated air flow from the inside upper air inlet 8, achieving the goal of winter passive heating. At the same time, during the day, the heat storage column 3 absorbs and stores latent heat through the phase change process. The tunnel air plays a role in supplementing indoor fresh air and preheating indoor cold air.

[0031] 2) For the winter night condition (Condition 2), the system operates in the heat preservation mode. When the latent heat stored in the heat storage column 3 during the day has not been fully released, the inner air vents 8 and 11 remain open, and the rest of the air vents remain closed; the system enters the heat release stage, and the operation adjustment is as Figure 5 shown. The heat storage column 3 releases latent heat to heat the air in the inner flow channel and sends the heat into the room.

[0032] When the latent heat of the heat storage column 3 is fully released, the thermistor senses and transmits a command to the controller. At this time, all the air vents of the system remain closed, the system shuts down and enters the heat preservation stage, and the operation adjustment is as Figure 6 shown. Due to the multi-layer heat protection of the heat storage column insulation layer 4 and the non-flowing air in the inner flow channel at this time, the system can effectively reduce the heat dissipated at night and achieve the goal of winter heat preservation.

[0033] 3) For the summer day condition (Condition 3), the system operates in the ventilation mode, and the operation adjustment is as Figure 7 shown. At this time, the inner upper air vents 8, the outer lower air vents 9, the heat collection side lower air vents 10, and the inner lower air vents 11 remain closed, and the rest of the air vents remain open; the tunnel air enters the indoor fresh air flow channel 24 from the indoor fresh air inlet 23, is sent into the room through the fresh air diffuser 25, replenishes fresh air for the room, mixes with the indoor hot air, rises to the middle position of the system, and enters the outer air duct 5 and the inner air duct 15 through the heat collection side middle air vents 21 and the inner middle air vents 22 respectively. Under the combined action of solar radiation and the heat storage column 3, the air in the double air ducts is heated and rises, and flows out of the room through the outer upper air vents 6, taking away heat at the same time. At this time, a part of the heat is absorbed by the heat storage column 3, reducing the heat flowing into the room and playing a role in cooling. The tunnel air plays the role of replenishing indoor fresh air and pre-cooling the indoor hot air.

[0034] 4) For the summer night condition (Condition 4), the system operates in the cooling mode, and the operation adjustment is as Figure 8 shown. At this time, the inner upper air vents 8, the outer lower air vents 9, the heat collection side lower air vents 10, and the inner lower air vents 11 remain closed, and the rest of the air vents remain open; the tunnel air enters the indoor fresh air flow channel 24 from the indoor fresh air inlet 23, is sent into the room through the fresh air diffuser 25, replenishes fresh air for the room, mixes with the indoor hot air, rises to the middle position of the system, and enters the outer air duct 5 and the inner air duct 15 through the heat collection side middle air vents 21 and the inner middle air vents 22 respectively. The relatively low-temperature air exchanges heat with the heat storage column 3, the air in the double air ducts is heated and rises, and flows out through the outer upper air vents 6, taking the heat out of the room. At the same time, the heat storage column 3 completes the phase change process and releases heat to prepare for absorbing heat the next day.

[0035] The scope of protection claimed by the present invention is not limited to the above specific embodiments, and for those skilled in the art, the present invention can have various deformations and modifications. Any modification, improvement and equivalent replacement made within the concept and principle of the present invention shall be included in the scope of protection of the present invention.

Claims

1. A multi-tube heat storage type double-flow channel ventilation control system driven by solar energy, characterized in that: It includes a peripheral wall surface, a heat-collecting wall surface, a ceiling (26) and a building inner wall (14). The ceiling (26) is connected to the peripheral wall surface to form an integral outer frame, which is located on the outside of the building whose temperature is to be regulated and surrounds the heat-collecting wall surface. The peripheral wall surface faces south and is on the sunny side. The heat-collecting wall surface faces the peripheral wall surface, and there is an outer air duct (5) between them. There is an inner air duct (15) between the heat-collecting wall surface and the building inner wall (14). The peripheral wall surface includes a PC sunlight board (1), and the PC sunlight board (1) is transparent. The heat-collecting wall surface includes a plurality of heat storage columns (3) arranged vertically and neatly. There is a heat storage column heat insulation layer (4) outside the heat storage columns (3). There is a heat collection plate (13) inside the heat storage array formed by the heat storage columns (3). The heat storage columns (3) are installed on fixing plates (12) at upper and lower positions. The fixing plates (12) at upper and lower positions are respectively connected to the ceiling (26) and the ground. There is a heat collection side upper air inlet (7) between the fixing plate (12) at the upper position and the ceiling (26). There is a heat collection side lower air inlet (10) between the fixing plate (12) at the lower position and the ground. There is a heat collection side middle ventilation opening (21) at the middle position of the heat collection plate (13). There is an outer side upper air inlet (6) at the position on the ceiling (26) corresponding to the outer air duct (5). There is an inner side upper air inlet (8) between the building inner wall (14) and the ceiling (26). There is an inner side lower air inlet (11) between the building inner wall (14) and the ground. There is also an inner side middle ventilation opening (22) in the middle of the building inner wall (14). It also includes a tunnel wind air duct. The tunnel wind air duct includes a buried pipe (18). The buried pipe (18) is provided with a tunnel wind air inlet (19) for air intake. The outside of the buried pipe (18) is wrapped with a tunnel wind heat insulation layer (20). There is an outer side lower air inlet (9) between the air outlet of the buried pipe (18) and the outer air duct (5). The air outlet of the buried pipe (18) enters the indoor fresh air flow channel (24) through the indoor fresh air inlet (23). The indoor fresh air flow channel (24) is buried under the ground surface, and its air outlet is communicated with the building interior through a fresh air diffuser (25). The heat storage column (3) is a vacuum heat storage column, which includes a heat storage pipe (16). A vacuum tube (17) is sleeved outside the heat storage pipe (16). The vacuum heat storage column uses calcium chloride hexahydrate as a phase change material, and 3.0% barium hydroxide is contained in the calcium chloride hexahydrate, and the phase change temperature is 28.1 °C.

2. The multi-tube heat storage type double-channel ventilation regulation system driven by solar energy according to claim 1, wherein: The PC sunlight board (1) is processed from polycarbonate resin.

3. A multi-tube heat storage type double-flow channel ventilation control system driven by solar energy according to claim 1, characterized in that: A dust-proof film (2) is pasted on the outside of the PC sunlight board (1), and the dust-proof film (2) is transparent.

4. A multi-tube heat storage type double-flow channel ventilation control system driven by solar energy according to claim 1, characterized in that: Electromagnetic on-off valves are provided at the heat collection side upper air inlet (7), the heat collection side lower air inlet (10), the heat collection side middle ventilation opening (21), the outer side upper air inlet (6), the inner side upper air inlet (8), the inner side lower air inlet (11), the inner side middle ventilation opening (22) and the outer side lower air inlet (9), and the opening and closing are controlled through the electromagnetic on-off valves.

5. A multi-tube heat storage type double-channel ventilation control system driven by solar energy according to claim 4, characterized in that: A temperature sensor and an automatic control device are provided in the building interior whose temperature is to be regulated.

6. A multi-tube heat storage type double-flow channel ventilation control system driven by solar energy according to claim 1, characterized in that: Green plants are cultivated on the ground outside the building above the buried pipe (18).

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