JP2009074794A - Heat island prevention system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a heat island prevention system structured so that the terrestrial heat accumulation is reduced by shutting off solar beams with tree leaves to form a wide shadow part on the ground surface, capable thereby of precluding an atmospheric pollution and/or occurrence of the heat island phenomenon by means of oxygen emission and the absorption of carbon dioxide by trees in the nature. <P>SOLUTION: The system includes a means 63 to shut off the solar beams with the leaves 53 of natural or artificial trees and jet in atomization a cold water from the leaves 53 or around them when the ambient atmospheric temperature has reached the preset temperature level prescribed. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a heat island prevention system, and in particular, a face plate that receives solar heat is installed in a transparent cover, water supplied from the outside is heated on the face plate, and overflowed from the face plate to be taken out from a lower water storage tank. The present invention relates to a heat island prevention system used in combination with a tree-type solar water hot water generator.

  The heat island phenomenon is generally regarded as a phenomenon in which the temperature of the atmosphere does not drop even at night when solar heat accumulates in urban residential materials or asphalt on paved roads. Furthermore, it is considered that exhaust heat from heating / cooling equipment, exhaust gas from automobiles, etc. are generated in synergy. As a preventive measure, greening the roof of the building is considered, but the effect is not clearly understood at present.

  Conventionally, as a hot water generator using solar heat, a light receiving plate called a solar panel or the like is installed facing the sun, and the light receiving plate is directly heated by sunlight during the day, and the water flowing in the light receiving plate is used. A solar system having a configuration in which it is extracted by heating and warming water is known.

  For example, a water tank is covered with a conical transparent cover so that sunlight can be collected from all directions regardless of the position of the sun during the day. There is a water heater. This is provided with a transparent outer wall plate that is substantially similar to the water tank with a vacuum layer across the entire outer surface of a stainless steel water tank whose top is hemispherical and conical on the side. A hot water outlet pipe that opens near the top of the tank is provided, and the hot water outlet pipe is extended from the bottom of the tank to the outside so that the hot water in the tank heated by solar heat is taken out. A gap is formed between the outer peripheral surface of the water storage tank and the transparent outer wall plate, and this portion is used as a vacuum layer so that the collected heat is not dissipated. The effective heat collection time of solar heat is secured by making the transparent outer wall plate conical.

In addition, as an example of a hemispherical transparent sunlight-lighting structure so as not to be affected by the shade of the building, a solar heat collecting apparatus described in Japanese Patent Application Laid-Open No. 8-303875 has been proposed. According to this, a solar light collector is installed on the roof of the building or an upper portion close thereto, and the solar heat collector comprises a heat collecting plate and a storage tank along the outer wall of the building at a position below the solar light collector. Is installed, and the sunlight collected by the solar light collecting device is irradiated to the heat collecting plate portion of the solar heat collector to obtain hot water from the solar heat collector.
JP 2002-81182 A JP-A-8-296905 JP-A-8-303875

  In recent years, global warming due to the release of carbon dioxide into the atmosphere due to the use of fossil fuels has been pointed out as a serious problem, especially at night when solar heat accumulates in urban residential materials and asphalt on paved roads. However, heat islands where the temperature of the atmosphere does not drop are a problem, but as a preventive measure, greening such as watering the streets manually or planting lawns on the roof of buildings is moderate and fundamental The reality is that it is not an ideal solution.

  In order to solve the above-mentioned problems, the present invention reduces the heat storage of the ground by blocking the sunlight with the leaves of natural or artificial trees, creating a large shaded part on the ground, and releasing oxygen by natural trees. Another object of the present invention is to provide a heat island prevention system that prevents air pollution and heat island through absorption of carbon dioxide.

  Furthermore, the present invention provides a face plate that stretches water over a wide area in the transparent cover, and directly transfers the heat of the face plate by solar heat to the water, so that hot water can be obtained with high thermal efficiency and is extremely compact. It is intended to provide a heat island prevention system that prevents overheating and warming on the ground due to solar heat and various exhaust gases, etc., in combination with a tree-type solar water hot water generator that can be configured.

  According to the present invention, sunlight is blocked by a leaf portion of a natural or artificial tree, and when ambient air temperature reaches a predetermined temperature set in advance, cold water is jetted and sprayed from the leaf portion or the periphery of the leaf portion. There is provided a heat island prevention system comprising means.

  Further, according to the present invention, a unit case having a tray-like face plate inside and having at least a transparent upper surface is installed on the tree, and overflows from the water supply pipe for supplying water onto the tray-like face plate and the tray-like face plate. There is provided a heat island prevention system characterized in that a drain pipe for guiding water from the bottom of the unit case to the water storage tank is provided, and the ground is covered with shadows of the unit case and the leaves of the trees by sunlight.

  According to the heat island prevention system of the present invention, overheating on the ground due to solar heat and various exhaust gases, global warming can be prevented, and solar heat is accumulated in the materials of urban houses and asphalt on paved roads at night. However, the situation where the temperature of the atmosphere does not drop is solved.

The present invention will now be described with reference to the accompanying drawings for preferred embodiments.
FIG. 1 is a schematic side cross-sectional view of a tree-type solar water use hot water generator with a heat island prevention function according to an embodiment of the present invention. A tree-shaped water supply / drainage section is constituted by one main double pipe 40 extending perpendicularly to the ground and a plurality of branch double pipes 36 extending obliquely upward from a middle portion of the main double pipe 40. The The water supply pipe 6 of the water supply / drainage section passes from the water supply source (not shown) through the center of the main double pipe 40, that is, the tree-shaped trunk, and further through the center of the branch double pipe 36, that is, the tree-shaped branch. It communicates with a unit case 37 (described later) at the tip of the branch. The drainage pipe 38 of the water supply / drainage part is disposed from the unit case 37 along the outer peripheral part of the branch part and the outer peripheral part of the trunk part, and is connected to the water storage tank part 12 from the position of the trunk part. The lower part of the water storage tank 12 is connected to the main water supply pipe via the bypass pipe 13. In the illustrated example, the water supply / drainage section at the upper end of the trunk is directly connected to the unit case 37. A water supply pump 9 and a valve 10 are provided below the position of the connection portion between the bypass pipe 13 and the water supply pipe 6 (that is, the water supply source side), and a portion extending from the drain pipe 38 to the water storage tank section 12 and the bypass pipe 13 is also provided with pumps 39 and 41 in the same manner.

  The unit case 37 has a box-shaped outer shape in which a transparent cover 5 is covered on a water storage plate 50 at the bottom of the case, and a tray-like face plate 7 is provided in the box shape so as to be separated from the inner wall of the case. Have. The tip of each water pipe 6 extends into the unit case 37 and communicates with the upper surface of the tray-like face plate 7, and the drain pipe 38 communicates with the case bottom. Each unit case 37 is provided with an air pressure adjusting device (not shown). The transparent cover 5 of the case 37 is made of plastic such as tempered glass or an acrylic plate.

  The internal tray-like face plate 7 is formed of a plate having good heat storage properties such as stainless steel or aluminum. In addition, a water level meter and a thermometer (not shown) are added to the water storage tank section 12, and a control personal computer that takes in the output signals of these gauges and gives an opening / closing command of the valve can be used. It is like that.

  The operation of the tree-type hot water generator will be described. First, by the operation of the pump 9 provided in the water supply pipe 6, water is supplied from the water supply source to the upper surface of the tray-like face plate 7 in the unit case 37 through the water supply pipe 6. Here, the water on the face plate 7 is heated by sunlight irradiated through the transparent cover 5. By continuous water supply, the hot water on the tray-like face plate 7 overflows from the face plate 7 and flows down from the bottom of the unit case through the drain pipe 38 and is stored in the water storage tank portion 12 by the pump 39. The water supply pipe 6 continues to supply water until the amount of water in the water storage tank section 12 reaches a predetermined amount, but when the water level of the water storage tank section 12 exceeds the position of the bypass pipe 13, the hot water in the water storage tank section 12 is predetermined. Until the temperature is reached, the valve 10 is closed and the pump 9 is stopped by the command signal of the control personal computer, and the pump 41 is operated and the hot water in the water storage tank section 12 is supplied to the bypass pipe 13 and the water supply / drain pipe 6. , 38 circulate between the inside of the unit case 37 and the water storage tank portion 12.

  When the hot water in the water storage tank unit 12 reaches a specified temperature, the hot water is sent from the water storage tank unit 12 through the hot water discharge pipe 16 to the place of use, and at the same time, the valve 10 is opened, the operation of the pump 9 is restarted, and the bypass pipe 13 The pump 41 is stopped, water is supplied from the water supply pipe 6 into the unit case 37, and hot water overflowing from the tray-like face plate 7 is sent to the water storage tank unit 12. When the temperature of the hot water in the water storage tank section 12 falls below a predetermined temperature, the valve 10 is closed and the hot water is recirculated between the water storage tank section 12 and the unit case 37 by the pump 41 of the bypass pipe 13. Is done.

  FIG. 2 is a schematic view showing one example of use of a tree-type hot water generator having an artificial leaf. On the cylindrical base 51, one unit case 37 having an outer shell constituted by a hollow cylindrical transparent cover 52 having a slightly smaller diameter than this is mounted, and a tree shape is formed around the upper end of the base 51. A plurality of leaf portions 53 are attached. In this case, the leaf portion 53 is disposed so as to surround the unit case 37, but the tip side from the base portion of the leaf is inclined or curved in an outwardly opened state so that the sunlight irradiates at least the upper half of the unit case 37. Installed. In addition, the tree trunk which comprises a cylindrical base side part is painted and the pattern which considered the aesthetic design so that a more preferable whole external appearance may be exhibited.

  The unit case 37 in this example is open at the bottom. In the cylindrical unit case 37, a plurality of tray-like face plates 7 spaced above and below and the water supply pipe 6 penetrating these face plates 7 are arranged. The water supply pipe 6 is connected from the unit case 37 through the center of the base 51 to a water supply source (not shown). FIG. 2 is a side sectional view, but the outer shell of the unit case 37 is shown in a perspective view for easy understanding of the structure. In the base 51, a water storage tank portion 12 supported by the inner wall of the base or the ground is provided.

  A hot water outlet pipe 16 is connected to the water storage tank section 12. The hot water take-out pipe 16 is drawn out from the base 51 to the outside and led to a hot water use location or connected to a secondary water storage tank (not shown). The tray-like face plate 7 provided on the outer periphery of the water supply pipe 6 in the transparent cover 52 has a larger outer diameter in the order of the lower face plate. Therefore, the cold water sent from the water supply pipe 6 receives sunlight. When the water is warmed on the receiving face plate 7 and overflows from the uppermost face plate 7 to the lower face plate in sequence and gradually accumulates in the water storage tank section 12 from the lower end of the opened unit case, and when it exceeds a certain amount It is taken out from the hot water outlet pipe 16.

  In the example of FIG. 2, the leaf portion 53 is artificial, but the unit case may be installed on an actual tree. If a problem arises in terms of strength, the unit case placed on the tree can be supplementarily supported by an appropriate support column or support base. The shape of the unit case 37 is not limited to a cylindrical shape, and any shape such as a dome shape or a box shape can be adopted. Further, the unit case 37 may have a structure having a bottom plate. After warm water is once accumulated on the bottom plate, the warm water may flow from the bottom plate to the water storage tank portion 12.

  As another example, as shown in FIG. 3, the unit case 37 itself may be formed in the shape of a natural tree leaf, thereby preventing the ground from being directly heated by solar heat. In this case, a leaf-shaped face plate 7 such as a leaf portion 53 is provided in the unit case 37 so that the water pipe 6 is supplied onto the face plate through the case and overflows from the face plate 7 in the case. The water accumulated in the water is collected by the drain pipe 38. In this case, the water pipe 6 and the drain pipe 38 can be formed in the shape of a natural tree branch or trunk. Reference numeral 5 denotes a transparent cover.

  Next, an embodiment of the heat island prevention system according to the present invention will be described. The heat island phenomenon is generally regarded as a phenomenon in which the temperature of the atmosphere does not drop even at night when solar heat accumulates in urban residential materials or asphalt on paved roads. Furthermore, it is considered that exhaust heat from heating / cooling equipment, exhaust gas from automobiles, etc. are generated in synergy. As a preventive measure, greening the roof of the building is considered, but the effect is not clearly understood at present.

  In the present invention, solar heat is used as a heat source for the hot water generator, and the above-described tree-type hot water generator is provided with a means for blocking sunlight, thereby creating a wide shade area on the ground to prevent overheating and heat storage such as asphalt. It is something to try. Referring to FIG. 1, a leaf portion 53 simulating the shape of a tree leaf is provided around the unit case 37, and the leaf portion 53 blocks sunlight rays radiated onto the ground, and at the same time from the outside, particularly a tree. The unit case 37 is hidden behind the leaf portion 53 from the side or below so that it cannot be seen. In addition, as shown in FIG. 1, the water supply pipe 6 is provided with a water dripping means (nozzle) 63, and water is drowned on the ground as necessary to forcibly prevent overheating of the ground. Furthermore, especially in the summer heat island phenomenon, it is often combined with photochemical smog and causes a great deal of damage to the residents. Therefore, depending on the air pollution at that time, oxygen gas or hydrogen gas is injected by the gas injection nozzle means 62. I try to prevent air pollution. The nozzle means 62 is connected to a separately installed oxygen generator and hydrogen generator, both of which are controlled by a personal computer function, and the equipment and facilities for preventing heat island are automatically activated by adjusting the atmospheric temperature and grasping the status of atmospheric pollution. So that it is systematized.

  FIG. 3 is an enlarged perspective view of the unit case 37 on the leaf part and the leaf part 53 holding the unit case 37 in the tree-type hot water generator shown in FIG. 1 and 3 are configured in a form to which a heat island prevention function is added. As shown in FIG. 3, a photovoltaic power generation material (solar cell) 21 is mounted on a tree-shaped leaf portion 53 so as to store electricity, and the cooling and cooling effects installed on the leaf portion using this electric power. In order to prevent heat island, power is applied to functional elements and materials. In addition, the leaf portion 53 has a large shape with as large an area as possible, and the shadow of the leaf portion 53 is greatly generated on the ground so as to enhance the effect of preventing heat island. Since the unit case is heavy, a reinforcing aggregate 55 for stably supporting the leaf portion 53 and the unit case 37 is added to the branch portion. As shown in FIG. 3, the water supply pipe 6 for supplying water onto the face plate 7 and the drain pipe 38 for taking out hot water from the bottom of the unit case 37 may be simultaneously supported by the reinforcing aggregate 55.

  When the heat island prevention system of the present invention is installed along a road, on the roof of a building, in a park or in an open space in a residential area, consideration is required so as not to damage the scenery. By hiding at 53, the appearance of a natural tree is exhibited and the aesthetic demands are achieved. The leaf portion 53 is attached to the unit case 37 itself, or is attached to a branch portion or a trunk portion adjacent to the unit case 37. In any case, it is a matter of course that the upper surface of the unit case 37 is exposed to sunlight.

  4 (A) to 4 (C) are schematic views showing various embodiments of the heat island prevention system according to the present invention using the hot water generator 60 using solar heat. FIGS. 4A and 4B show an example in which a dome-shaped hot water generator 60 using solar heat is installed on a natural tree trunk. In this case, the hot water generator itself has a tough trunk as much as possible. Trees that are not covered with leaves are selected. In the case of FIG. 4 (A), a film-like solar cell 21 is attached to the portion of the leaf 61, and the power from the solar cell 21 is used as a power source for an auxiliary heater added to the hot water generator 60. At the same time, the sun's rays are blocked by the leaves of the trees, creating a large shaded area on the ground to reduce the heat storage of the ground, and also to prevent air pollution and heat island through the release of oxygen and absorption of carbon dioxide by natural trees. I have to.

  In the case of FIG. 4B, nozzle means 62 for injecting oxygen gas or hydrogen gas is provided on the tree, and this is connected to an oxygen generator or hydrogen generator (not shown) provided separately. In this case, a device for automatically adjusting the concentration of oxygen gas or hydrogen gas so as not to induce an explosion is also added. Further, the flooding means 63 can be provided to prevent overheating of the ground. These are controlled by a personal computer function, and the entire system is configured so that the efficiency of the solar-powered hot water generator 60 is adjusted, the atmospheric temperature is adjusted to prevent heat islands, the air pollution status is grasped, and the heat island prevention device operates automatically. It has become.

  In the example of FIG. 4 (C), a solar-powered hot water generator 60 having a cylindrical transparent cover 52 is installed on the trunk of a broad-leaved tree, and the sunlight 61 on the ground is blocked by the leaves 61 of the tree to prevent heat island. This is an example. As in FIG. 4A, a wide leaf is used, and the solar cell 21 is installed in the portion of the leaf 61. In the examples of FIGS. 4A to 4C, a hot water generator is mounted on a natural tree. However, an artificial tree may be used, and in the case of a large capacity hot water generator, an appropriate reinforcement is provided for the trunk of the tree. Means are provided.

It is a schematic sectional side view of a tree-type solar thermal hot water generator with a heat island prevention function according to an embodiment of the present invention. It is the schematic which showed one usage example of the tree-type hot water generator which has an artificial leaf part. It is an expansion perspective view which shows the mounting state of the unit case on the leaf part in the tree type warm water generator shown in FIG. It is the schematic which showed the various Example of the heat island prevention system which concerns on this invention using the hot water generator using solar heat.

Explanation of symbols

5,52 Transparent cover 6 Water supply pipe 7 Face plate 9 Water supply pump 10 Valve 12 Water storage tank section 13 Bypass pipe 21 Solar cell 36 Branch double pipe 37 Unit case 38 Drain pipe 39, 41 Pump 40 Main double pipe 50 Water storage board 53 Leaf part 55 Reinforcement aggregate 60 Solar-heated hot water generator 61 Leaf 62 Gas injection nozzle means 63 Flooding means

Claims (4)

  Sunlight is blocked by the leaves of natural or artificial trees, and when ambient air temperature reaches a predetermined temperature set in advance, it has means for injecting and spraying cold water from the leaves and the periphery of the leaves Heat island prevention system.   2. The heat island prevention system according to claim 1, wherein a solar cell is mounted on a part of a leaf portion of the tree and the system is automatically controlled by the electric power.   The heat island prevention system according to claim 1 or 2, wherein means for spraying oxygen gas or hydrogen gas is added to a part of the means for spraying / spraying the cold water. A unit case provided with a tray-like face plate and having at least a transparent upper surface is installed on the tree, and a water pipe for supplying water onto the tray-like face plate and water overflowing from the tray-like face plate are provided from the bottom of the unit case. A heat island prevention system, characterized in that a drain pipe leading to a water storage tank part is provided, and the ground is covered with the shadow of the unit case and the leaf part of the tree by sunlight.

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