JP2008115606A - Heat island restraining system, heat island restraining method, and air remote monitoring system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a heat island restraining system capable of restraining the occurrence of a heat island phenomenon. <P>SOLUTION: The heat island restraining system comprises a base station 10 and water spraying apparatus 20. The base station 10 can acquire predetermined meteorological information on a plurality of spots. A plurality of water spray apparatus 20 exist, and each water spray apparatus can communicate with the base station 10 and is installed in a predetermined position to spray water. The base station 10 further comprises a selecting section 10d and a water spray control section 10e. The selecting section 10d can select the apparatus to be controlled out of the plurality of water spray apparatus 20. The water spray control section 20e can instruct the predetermined amount of water spray to the apparatus to be controlled. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a heat island suppression system, a heat island suppression method, and an air remote monitoring system.

  Recently, a phenomenon that an area such as an “island” in an urban area where the temperature is partially high (this phenomenon is referred to as a heat island phenomenon) has frequently occurred. This is because the ground surface becomes hot in areas with a lot of asphalt, while there are few green spaces and water.

  In general, cooling exhaust heat from buildings in summer is said to be equivalent to 1.1 million kW in the city center, and when this heat is released to the sea, the seawater temperature rises by 0.3 ° C, but the air temperature is 0.3 Can be reduced by ~ 0.5 ° C. If the same effect is estimated by rooftop greening, it is estimated that it will cost more than 5 times, and the effectiveness of the exhaust heat treatment system is recognized, but construction investment to reduce the outside temperature in the city center by 0.1 ° C Over 10 billion yen.

  Another cause of heat island is that recent urban plans are planned without considering the wind path, causing air stagnation on the walls of the building. When a sea breeze that is 5 ° C. cooler than the city center blows at a rate of 3 m per second in a space of 100 m in height, the cooling capacity is estimated to be several hundred thousand kW (Non-patent Document 1).

  In order to suppress the heat island phenomenon, an attempt such as “driving water” has been carried out. In Tokyo, a countermeasure against heat island has been studied (Non-patent Document 2).

“Special Feature Heat Island”, Air Conditioning and Sanitary Engineering Vol. 79, No. 5 “About Heat Island Countermeasure Promotion Area and Thermal Environment Map”, April 11, 2005, Environment Bureau Urban Development Bureau

  The Ministry of the Environment has come to recognize the heat island phenomenon in large cities as heat pollution in urban air. Development of a technique capable of suppressing the occurrence of the heat island phenomenon is awaited.

  Then, an object of this invention is to provide the heat island suppression system, the heat island suppression method, and the air remote monitoring system which can suppress generation | occurrence | production of a heat island phenomenon, without investing a large capital investment.

  In order to achieve the above object, the heat island suppression system according to claim 1 according to the present invention is capable of communication between a base station that acquires weather information and the base station, and each is in a predetermined position. A plurality of water spraying devices, each of which is capable of performing water spraying, and the base station selects a control target device from among the plurality of water spraying devices based on the weather information. A selection unit for selecting one or more and a water spray control unit (10e) for instructing the device to be controlled to spray a predetermined amount of water are provided.

  The heat island suppression system according to claim 2 is the heat island suppression system according to claim 1, wherein the base station exceeds a predetermined temperature set in advance after a predetermined time based on the weather information. The region where the temperature is reached is predicted, and the selection unit selects the control target device based on the prediction.

  The heat island suppression system according to claim 3 is the heat island suppression system according to claim 1, wherein the selection unit includes the predicted area, wind direction information included in the weather information, and / or the weather. The control target device is selected based on wind direction information included in weather information after a predetermined time predicted based on the information.

  Moreover, the heat island suppression system of Claim 4 is a heat island suppression system of Claim 1, Comprising: The said water spraying apparatus is installed in the upper part of a building 20 m or more.

  Further, the heat island suppression system according to claim 5 is the heat island suppression system according to claim 2, wherein the base station predicts a region where the temperature exceeds the predetermined temperature after a predetermined time, and When the heavy rain is predicted from the weather information after the time, the selection unit selects the water spray device installed in the area as the control target device.

  Further, the heat island suppression system according to claim 6 is the heat island suppression system according to claim 2, wherein when the base station predicts an area where the temperature exceeds the predetermined temperature after a predetermined time, The said selection part selects the said water spray apparatus installed in the adjacent area of the said area as said control object apparatus.

  The air remote monitoring system according to claim 7 is an air conditioning remote monitoring system for remotely monitoring a plurality of air conditioners, and is capable of communicating with a base station that acquires weather information and each of the base stations, Are installed at predetermined positions, each of which includes a plurality of water spray devices capable of spraying water, and the base station is based on the weather information and includes the plurality of water spray devices. A selection unit (10d) for selecting one or more control target devices from the above, and a water spray control unit (10e) for instructing the control target device to spray a predetermined amount of water, the water spraying device The water spray is controlled via the air conditioner that can communicate with the base station.

  An air remote monitoring system according to claim 8 is the air remote monitoring system according to claim 7, wherein the air conditioner includes an outdoor unit, and the outdoor unit has an outdoor air temperature. A sensor is further provided, and the base station uses, as weather information, an outside air temperature that is received from the air conditioner and is a detection result of the outside air temperature sensor.

  Moreover, the heat island suppression system according to claim 9 is the heat island suppression system according to claim 2, wherein the base station is based on the weather information after a lapse of a predetermined time after performing the water spray. The area where the temperature exceeds the predetermined temperature is predicted again.

  The heat island suppression method according to claim 10 includes: (a) acquiring predetermined weather information at a plurality of points; (b) selecting a predetermined region based on the weather information; c) spraying water on the predetermined area.

  In the invention according to claims 1 and 10 of the present invention, the selection unit selects a control target device based on weather information, and the water spray control unit controls water spray of the control target device. Therefore, water can be reliably sprayed to a necessary area.

  Further, in the invention according to claim 2, the area where the base station generates a temperature exceeding a predetermined temperature set in advance based on the weather information acquired from the weather information transmitting station (in other words, the heat island phenomenon occurs). Region). And the water spray apparatus installed in the said predicted area etc. is controlled, and the predetermined amount of water is sprayed on the said predicted area.

  In this way, before the heat island phenomenon occurs, by pre-spraying water on the area where the heat island phenomenon is expected to occur, the temperature (air temperature) of the area can be lowered and the occurrence of the heat island phenomenon can be suppressed. Can do.

  In the invention according to claim 3, when the base station predicts an area where the temperature exceeds a predetermined temperature set in advance, the selection unit selects the predicted area and the wind direction included in the weather information. The control target device is selected based on the information.

  Therefore, since water spray is sprayed toward the area (point) where heat island generation possibility is high, water spray for the purpose of heat island suppression can be efficiently performed.

  Moreover, in invention of Claim 4, a water spraying apparatus is installed in the upper part of a building 20 m or more.

  Accordingly, water spraying can be performed from a place such as the roof of a building, and the vaporization latent heat of the sprayed amount of water can be utilized to the maximum. In addition, since water vapor has a very high infrared absorption rate, by spraying water from the top of the building as in the present invention, a large amount of water vapor can be contained in air of a predetermined height or higher. Thereby, infrared rays can be interrupted and, as a result, the temperature rise of the ground surface can also be suppressed.

  Further, in the invention according to claim 5, when the base station predicts in advance a region where the air temperature exceeds a predetermined temperature set in advance, and predicts concentrated heavy rain in the predicted region. The selection unit selects a water spray device installed in a high temperature area where the predicted temperature is highest as a control target device, and sprays a predetermined amount of water on the control target device.

  Therefore, when water is sprayed in a high temperature area, the rising air current can be suppressed and the development of cumulonimbus clouds can be suppressed in the high temperature area. As a result, not only the heat island can be suppressed, but the occurrence of torrential rain can be suppressed.

  In the invention according to claim 6, when the base station predicts a region where the air temperature exceeds a predetermined temperature after a predetermined time, the selection unit selects a water spray device installed in the adjacent region of the region. Select as control target device.

  Accordingly, since a large amount of water vapor is supplied to the center of the heat island, there is an effect of promoting the generation and development of cumulonimbus clouds, which may suppress the heat island phenomenon and induce rain. If such rain occurs, heat circulation can be promoted between the sky and the ground, leading to a significant elimination of the heat island. In addition, local urban torrential rain can be prevented if rain can be induced before the cumulonimbus is sufficiently developed.

  Moreover, in invention of Claim 7, the water spray is controlled via the said air conditioner which is equipped with the at least 1 or more air conditioner and the water spray apparatus can communicate with a base station. .

  Therefore, a heat island suppression system can be constructed using an existing air-conditioning remote management control system composed of an air conditioner and a base station.

  In the invention according to claim 8, the outdoor unit further includes an outside air temperature sensor, and the base station receives the outside air temperature, which is a detection result of the outside air temperature sensor transmitted from the air conditioner, as weather information. ,We are using.

  In this way, by using the outside temperature sensor as all or part of the weather information, the outside temperature sensor is raw information at the location, so that it is possible to accurately identify an area where the heat island phenomenon can occur. it can. Therefore, the heat island can be more reliably suppressed by adopting the system.

  Further, in the invention according to claim 9, the base station selects an area where the temperature is higher than a predetermined temperature based on weather information after a predetermined time has elapsed since the water spray device sprayed water. Predict again.

  Therefore, the selection unit can select the control target device again while reflecting the effect of water spray.

  Hereinafter, the present invention will be specifically described with reference to the drawings showing embodiments thereof.

<Embodiment 1>
FIG. 1 is a diagram showing a configuration of a heat island suppression system according to the present embodiment. As shown in FIG. 1, the heat island suppression system includes a base station 10, a water spray device 20, and a weather information transmission station 30. The base station 10, the water spray device 20, and the weather information transmission station 30 are connected to the telecommunication line 40. Here, the telecommunication line 40 for connecting each element is a communication network such as the Internet, and may be wired or wireless.

  The base station 10 can acquire predetermined weather information at a plurality of points. Based on the acquired weather information, the base station 10 can predict in advance a region where the temperature exceeds a predetermined temperature preset in the base station 10 (that is, the heat island phenomenon occurs). You can predict where you will be).

  As illustrated in FIG. 2, the base station 10 includes a communication unit 10a and a prediction unit 10b. Then, the communication unit 10 a acquires weather information from the weather information transmitting station 30 via the telecommunication line 40. Moreover, in the communication part 10a, the positional information on the position where each water spraying apparatus 20 is installed and the identification information used as ID of each water spraying apparatus 20 can also be received. The prediction unit 10b predicts a region where the heat island phenomenon occurs by performing a simulation based on the acquired weather information.

  Specifically, the base station 10 acquires weather information from the weather information transmitting station 30 every predetermined time, and from the information measurement time to the time until the information is acquired after the predetermined time next time or more The predicted value of the temperature (air temperature) distribution is calculated and stored in the storage unit 10c further provided in the base station 10.

  Furthermore, the base station 10 controls the water spray control from among a plurality of water spray devices 20 to be described later based on the acquired weather information (the control target device is one of the plurality of water spray devices 20). A selection unit 10d for selecting a part of the water spraying device 20). More specifically, the base station 10 (more specifically, the prediction unit 10b) predicts in advance a region where the temperature exceeds a predetermined temperature preset in the base station 10 based on weather information. The selection unit 10d selects the control target device based on the prediction.

  Furthermore, the base station 10 includes a water spray control unit 10e that instructs (controls) a predetermined amount of water spray to the control target device.

  A plurality of water spray devices 20 are arranged (installed) at predetermined positions at each point. The water spray device 20 can communicate with the base station 10 via the electric communication line 40. Moreover, each water spraying device 20 can spray water.

  Here, the water spray device 20 is installed on an upper part of a building having a predetermined height or more (for example, a veranda of a house or a roof of a building). Further, in the system according to the present embodiment, when at least one air conditioner is provided, the water spraying device 20 is water installed in an outdoor unit of an air conditioner installed outdoors. A spraying device 20 can be used. As the air conditioner, for example, Enecut (trade name of Daikin Industries, Ltd.) that can communicate with the base station 1 can be employed.

  In this case, the water spray device 20 can spray water to the outside air and can spray water to the heat exchanger of the outdoor unit. In this case, the control unit in the outdoor unit may control water spraying of the water spray device, and the outdoor unit may be remotely operable from the base station 10.

  Each water spray device 20 includes a position sensor (not shown in FIG. 1) that acquires position and time information using a GPS (Global Positioning System) or the like. By the position sensor, each water spray device 20 transmits position information for specifying its own installation position to the base station 10 together with its own identification information. When receiving the position information, the base station 10 can recognize the installation position of each water spray device 20 (the position information is stored in the storage unit 10c included in the base station 10).

  Therefore, when the base station 10 (more specifically, the predicting unit 10b) predicts in advance a region where the air temperature exceeds the predetermined temperature, the selecting unit 10d selects (more specifically, based on the position information). Specifically, with reference to the position information and the identification information), the water spray device 20 installed in the predicted region where the temperature exceeds the predetermined temperature is selected as the control target device. Then, the water spray control unit 10e controls the control target device to spray a predetermined amount of water on the control target device.

  In addition, since the installation position of the water spray apparatus 20 does not normally move, the aspect which does not have a position sensor may be sufficient. As long as the base station 10 can identify its location, for example, a mode in which the latitude and longitude acquired separately using a map or the like are manually input may be used as the position related information. In this case, each water spray device 20 is desirably provided with a storage unit that stores the identification information of the own device and the position-related information in association with each other.

  The weather information transmitting station 30 transmits the weather information necessary for the base station 10 for the simulation. Weather information is used to predict the occurrence of the heat island phenomenon. Here, the weather information includes, for example, temperature, precipitation, wind direction, wind speed, humidity, and atmospheric pressure.

  As the meteorological information transmission station 30, for example, a meteorological agency that discloses meteorological information can be employed. In addition, if weather information can be acquired, an information source such as a commercial database may be used. For example, it is known that the National Research Institute for Earth Science and Disaster Prevention establishes a local weather forecasting system (for example, in an article in the Mainichi Shimbun, August 9, 2006, Tokyo morning edition). Therefore, the weather information transmitting station 30 may be used as a local weather prediction system, and the base station 10 may use the weather information predicted in the local weather prediction system in order to predict the occurrence of the heat island phenomenon.

  In addition, in the simulation performed by the base station 10, in addition to the weather information described above, the altitude indicating the undulation of the ground surface that affects the wind flow and temperature, the reflection of sunlight, the evaporation of water, and the frictional heat when the wind blows It is also possible to take into account the land use situation (for example, whether the ground surface is a rice field or asphalt) that affects etc. Information relating to the altitude and land use status can be obtained from, for example, numerical map information provided by the Geographical Survey Institute.

  Next, an operation flow of the heat island suppression system according to the present embodiment will be described.

  First, the base station 10 receives the position information and the identification information transmitted from each water spray device 20 by the communication unit 10a, and stores the pair information in the storage unit 10c.

  On the other hand, the base station 10 receives weather information from the weather information transmitting station 30 at a predetermined timing by the communication unit 10a. Then, based on the received weather information, the prediction unit 10b of the base station 10 predicts in advance a region where the temperature exceeds a predetermined temperature preset in the base station 10 after a predetermined time (that is, in advance) Predict where the heat island phenomenon will occur).

  And the selection part 10d of the base station 10 arrange | positions in the said estimated area from the some water spray apparatus 20 below the positional information and identification information which are memorize | stored in the memory | storage part 10c. One or more water spray devices (which can be grasped as control target devices) are selected. Thereafter, the water spray controller 10e of the base station 10 instructs (controls) a predetermined amount of water spray to the control target device.

  In addition, in the control object apparatus which received control of the said water spray control part 10e, a predetermined amount of water is sprayed from the rooftop of a building, for example.

  Next, the details of the simulation of the temperature (air temperature) value executed by the prediction unit 10b of the base station 10 will be described (the simulation is similar to that described in Japanese Patent Application No. 2004-323703). Applicable).

  The base station 10 performs simulation on the prediction unit 10b using the fluid equation of motion, etc., with weather information as an input parameter, and predicts the current state at a predetermined position (region) or a temperature after a predetermined time. That is, the base station 10 (more specifically, the prediction unit 10b) constructs a mathematical model that models information such as the topography of the area, and the wind direction and wind speed obtained from the weather information transmitting station 30 are added to the mathematical model. By calculating and simulating meteorological information such as, a predicted value of temperature (air temperature) after a predetermined time at a predetermined position (region) is obtained.

  Here, for example, a regional atmospheric modeling system (RAMS) can be adopted as the mathematical model. In the mathematical model, the temperature (air temperature) in each region (point) can be predicted by simulating temporal changes in weather components such as temperature, water vapor, wind direction, wind speed, and rain.

  A predicted value of temperature (air temperature) in each region (point) by the simulation is obtained every predetermined time. Specifically, for example, the above-described various pieces of information are collected every hour to obtain a predicted value of temperature (temperature) four hours ahead. At this time, it is an example that the time is 4 hours ahead, but if the estimated value of the temperature (temperature) several hours ahead of the information collection cycle is obtained in this way, it may be due to a failure of the telecommunications line 40, etc. Even in a situation where the latest information can no longer be acquired, the prediction result of the temperature (temperature) in each region (point) can be provided.

  When calculating the predicted value of temperature (air temperature), for example, a horizontal 100 km square area including the area for which the predicted value is to be calculated is divided into vertical 100 × horizontal 100 in 1 km units, and in the vertical direction up to an altitude of 3 km. A simulation for predicting the temperature (air temperature) at each node on the mesh is performed by dividing the area into 30 units and using a mesh created in 100 m units as a mathematical model. At this time, the information on the altitude necessary for the simulation and the land use status such as whether it is a residential area or a forest can use the numerical map information of the Geographical Survey Institute.

  In addition, specifically, for example, weather information such as wind speed, wind direction, atmospheric pressure, and precipitation is input as an initial value to the mathematical model, for example, in addition to the above-described land use situation. The data assimilation performed at this time is performed using an optimization algorithm, but for example, a nudging method or the like may be used.

  When the mathematical model is constructed and the initial values are input, the air pollution distribution prediction simulation is performed. At this time, a temperature distribution after a predetermined time (for example, after time t1) is obtained based on the initial value input first. Next, the obtained simulation result is input to the mathematical model as an initial value, and based on this, a simulation for obtaining a temperature distribution after (time (2 × t1)) is performed. That is, by repeatedly performing the initial value input and the simulation calculation, a simulation result for a required predetermined time is obtained.

  When the base station 10 (prediction unit 10e) can predict a predetermined region (point) where a temperature (air temperature) exceeding a predetermined temperature set in advance can be predicted using the simulation result as described above. Then, the water spraying device 20 installed in the region predicted as the region where the air temperature exceeds the predetermined temperature is controlled, and the water spraying device 20 is sprayed with a predetermined amount of water.

Here, the amount of water required to lower the temperature (air temperature) in the volume of 10 ⁹ l (liter) (3.93 × 10 ⁷ mol) by 1 ° C. is about 505.3 l (liter). Here, the heat capacity of air was 29 J / mol · K, the temperature was 310 K, the latent heat of vaporization of water was 539 kcal / kg, and the density of water was 1 liter / kg.

  Here, when acquiring the current weather information from the weather information transmitting station 30, the prediction unit 10e needs to determine the predicted temperature by the above simulation. However, when weather information predicted in advance from the weather information transmitting station 30 is acquired, the prediction unit 10e only needs to determine a region having a temperature exceeding a predetermined temperature set in advance. As the weather information transmitting station 30 that transmits the preset weather information, as described above, a local weather prediction system in the National Research Institute for Earth Science and Disaster Prevention can be considered.

  As described above, in the heat island suppression system according to the present embodiment, the selection unit 10d selects a control target device based on weather information, and the water spray control unit 10e controls the water spray of the control target device. Yes.

  Therefore, water can be reliably sprayed to a necessary area. In other words, a water hammer demonstration test has been conducted as a heat island suppression. As described above, hammering water can lower the temperature by vaporization latent heat. It is difficult to make sure that water is delivered every day in an entire area. There is a possibility that the timing of watering will also vary. In addition, since weather conditions that change from day to day are ignored, the amount of water to be sprayed cannot be adjusted, and more water than necessary is sprayed. Therefore, by adopting the system according to the present invention, it is possible to reliably perform water injection in a necessary area.

  Based on the weather information acquired from the weather information transmitting station 30, the base station 10 predicts a region where a temperature exceeding a predetermined temperature set in advance (in other words, a region where the heat island phenomenon occurs). And the water spray apparatus 20 installed in the said predicted area etc. is controlled, and the predetermined amount of water is sprayed on the said predicted area.

  In this way, before the heat island phenomenon occurs, by pre-spraying water on the area where the occurrence is predicted, the temperature (air temperature) of the area can be lowered and the occurrence of the heat island phenomenon can be suppressed. Can do.

  If conditions such as a sufficient heat source, water vapor condenses, core particles that sublime into fine ice particles, water vapor in exhaust gas, and convergence of wind near the ground, rain may occur. It is thought that it can be done (for example, nonpatent literature 2).

  In other words, items necessary to generate the concentrated heavy rain (or the ring Yakumo that causes the heavy rain) are wind direction, wind speed, temperature and humidity, and atmospheric pressure. When a heat island is formed, the atmospheric pressure drops to a low pressure part (wind convergence). Therefore, by predicting in advance the area where the heat island is formed and spraying water on the water spray device (control target apparatus) 20 existing in the predetermined area at a predetermined timing, it is also possible to generate artificial rain. it can. If the rain occurs, thermal circulation can be promoted between the sky and the ground.

  Regarding artificial rain, “Chinese scientists are worried about the problem of frequent artificial rain”, ENVIROASIA (Japan-China-Korea Environmental Information Site) Climate Change Environmental News (China), September 10, 2003, etc. Is also mentioned.

  In addition, when the base station 10 predicts in advance a region where the temperature exceeds a predetermined temperature set in advance, the selection unit 10d may select the wind direction information and / or the weather included in the predicted region and weather information. The device to be controlled may be selected based on wind direction information included in weather information after a predetermined time predicted based on the information. Here, what is predicted from the weather information is temperature, wind direction, wind speed, atmospheric pressure, humidity, etc. after a predetermined time in the calculation area.

  For example, when the base station 10 predicts in advance a region where the air temperature exceeds a predetermined temperature set in advance, the base station 10 moves the water toward the high temperature region where the predicted temperature is highest. In consideration of the wind direction information included in the weather information, the predetermined water spray device 20 (the water spray device 20 installed in an area predicted to exceed the predetermined temperature is controlled by Control device).

  Thus, since water spray is sprayed toward the area | region (point) with high possibility of heat island generation, the water spray for the purpose of heat island suppression can be performed efficiently.

  By the way, if water spray is performed near the ground, water will land before vaporization. Therefore, in the system according to the present embodiment, it is desirable that the water spray device 20 be installed on the top of a building having a predetermined height or higher, such as a rooftop of a building or a veranda of a house.

  Thereby, water spraying can be performed from a place such as the roof of a building, and the vaporization latent heat of the sprayed amount of water can be utilized to the maximum. In addition, since water vapor has a very high infrared absorption rate, by spraying water from the top of the building as in the present invention, a large amount of water vapor can be contained in air of a predetermined height or higher. Thereby, infrared rays can be interrupted and, as a result, the temperature rise of the ground surface can also be suppressed. From the viewpoint of the effect, the predetermined height is preferably about 20 m. That is, the height of 20 m is a height that is vaporized before reaching the person on the road even if the sprayed water becomes a water droplet. Moreover, since it is necessary to utilize the flow of a wind for control of the whole area and the average height of a building is 20-30 m, the said 20 m or more is desirable. In addition, when aiming at weather control, since the center height of the airflow near the ground surface is about 90 to 120 m, 90 m or more is desirable.

  In addition, when the base station 10 predicts in advance a region where the temperature exceeds a predetermined temperature set in advance after a predetermined time, and predicts torrential rain in the predicted region from the weather information after the predetermined time The selection unit 10d may select the water spray device 20 installed in a high temperature area where the predicted temperature is the highest as the control target device, and spray a predetermined amount of water on the control target device. good. Note that the prediction unit 10b of the base station 10 may predict torrential rain based on predetermined weather information, and based on the predicted weather information from the local weather prediction system constructed by the National Research Institute for Earth Science and Disaster Prevention, the base station Ten prediction units 10b may determine heavy rain.

  Thus, when water is sprayed in a high temperature area, the rising air current can be suppressed and the development of cumulonimbus clouds can be suppressed in the high temperature area. As a result, not only the heat island can be suppressed, but the occurrence of torrential rain can be suppressed.

  In addition, when the base station 10 predicts in advance a region where the temperature exceeds a predetermined temperature set in advance, the selection unit 10d may select a high temperature region where the predicted temperature is the highest, and / or The water spray device 20 installed in the adjacent region of the high temperature region may be selected as a control target device, and a predetermined amount of water may be sprayed on the control target device under the water spray control device 10e.

  When the heat island phenomenon is formed, an ascending air current is generated, and the atmospheric pressure is lowered to a low pressure portion. Therefore, as described above, when water is sprayed in the high temperature area and / or the adjacent area, a large amount of water vapor is supplied to the center of the heat island, and air having a low temperature is supplied. It has the effect of promoting the occurrence and development of water, and can suppress the heat island phenomenon and induce rainfall. If such rain occurs, heat circulation can be promoted between the sky and the ground, leading to a significant elimination of the heat island. There is also the possibility of preventing local urban torrential rains.

  Further, as described above, the system according to the present embodiment includes at least one air conditioner, and the water spray device 20 is connected to the base station 10 via the air conditioner. The water spray is controlled. Here, in this case, the water spray device 20 may be capable of spraying water on the heat exchanger provided in the outdoor unit of the air conditioner. In addition, as a prior art in which an outdoor unit and a management control unit are connected via a network, there are, for example, Japanese Unexamined Patent Application Publication Nos. 2005-214427 and 2004-005496. Moreover, the water spray apparatus 20 is installed in the outdoor unit, and the above-mentioned Enecut exists as a conventional technique.

  Moreover, the thing of the following structures can also be employ | adopted as a technique in which the water spraying apparatus 20 is installed in a household outdoor unit.

  Water pipes are provided on the home veranda. This technology uses water supplied from the water pipe. More specifically, in an air conditioner composed of an indoor unit and an air-cooled outdoor unit, the outdoor unit includes a water supply port for water supplied from a water pipe, the supplied water, and the outdoor unit. Water heat exchanging means for exchanging heat with the heat exchanger, and flow rate adjusting means provided between the water supply port and the water heat exchanging means. A configuration in which the water heat exchange means is used as the water spray device 20 can also be adopted. In this case, the water heat exchange means sprays water on the outside air and sprays water on the heat exchanger of the outdoor unit.

  By adopting a configuration that controls the water spray of the water spray device 20 through such an air conditioner, heat island suppression is achieved using an existing air conditioning remote management control system that includes an air conditioner and a base station. A system can be constructed (air remote monitoring system). Thus, using existing air-conditioning monitoring and remote control infrastructure can be cost-effective because investment is minimal with water spray equipment. As a result, it leads to energy saving and cost saving of the user of the air conditioner, so that it is easy to make a capital investment even when the user bears the cost.

  Moreover, when constructing a heat island suppression system using the water spray device 20 installed in the outdoor unit, the position of the water spray device 20 is as shown in FIG. 3 when spraying water to the outside air. Is desirable. That is, in order to suppress the occurrence of the heat island phenomenon, when water is sprayed on the outside air, the water spray device 20 is positioned on the wind sending side of the fan 21a provided in the outdoor unit 21 (see FIG. 3). ). That is, the wind from the fan 21 a is in the direction of the outside air from the inside of the outdoor unit 21, and the water spray device 20 is located on the wind direction side with respect to the outdoor unit 21.

  As described above, when water is sprayed on the outside air, the water spray device 20 is positioned at a position as shown in FIG. Can be sprayed (diffused).

  When the outdoor unit 21 of the air conditioner is provided in the heat island suppression system as described above, the outdoor unit 21 further includes an outdoor temperature sensor (not shown in FIG. 3), and the base station 10 You may receive and utilize the outside temperature which is a detection result of the outside temperature sensor transmitted from the air conditioner as weather information. Here, the base station 10 may use only the information on the outside air temperature sensor as the weather information, or may use the information on the outside air temperature sensor as information supplementing the weather information acquired from the weather information transmitting station 30. Also good.

  By using the outside air temperature sensor as all or part of the weather information, the outside air temperature sensor is raw information at the location, so that the area where the heat island phenomenon can occur can be specified accurately. Therefore, the heat island can be more reliably suppressed by adopting the system.

  Moreover, the base station 10 can also predict again the area where the air temperature exceeds a predetermined temperature set in advance based on weather information after a predetermined time has elapsed since the water spray device 20 sprayed water. For example, under the control of the water spray control unit 10e, the base station 10 again predicts an area where the air temperature exceeds a predetermined temperature after the control target apparatus performs a predetermined amount of water spraying. And the selection part 10d determines the water spray apparatus 20 of the predetermined area specified as a result of the said prediction as a control object apparatus, the water spray control part 10e performs water spray control of the determined control object apparatus, and the said A predetermined amount of water is sprayed on a predetermined area.

  By adopting the configuration, the selection unit 10d can select the control target device again while reflecting the effect of water spray. Note that, under the control of the base station 10, the device to be controlled may spray the same amount of water as the previous time, and the optimum spray amount is determined and sprayed by prediction reflecting the effect of the water spray. May be.

It is a figure which shows the structure of the heat island suppression system concerning this invention. It is a block diagram which shows the internal structure of a base station. It is a figure which shows the structure which installed the water spraying apparatus in the outdoor unit.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Base station 10a Communication part 10b Prediction part 10c Memory | storage part 10d Selection part 10e Water spray control part 20 Water spray apparatus 21 Outdoor unit 21a Fan 30 Weather information transmission station 40 Electric communication line

Claims (10)

A base station (10) for acquiring weather information;
A plurality of water spray devices (20) capable of communicating with the base station, each installed at a predetermined position, each capable of performing water spray,
The base station
A selection unit (10d) for selecting one or more control target devices from the plurality of water spray devices based on the weather information;
A water spray control unit (10e) for instructing the device to be controlled to spray a predetermined amount of water;
This is a heat island suppression system. The base station
Based on the weather information, predicting a region where the temperature exceeds a predetermined temperature set in advance after a predetermined time,
The selection unit includes:
Selecting the device to be controlled based on the prediction;
The heat island suppression system according to claim 1. The selection unit includes:
The control target device is selected based on the predicted area and the wind direction information included in the weather information and / or the wind direction information included in weather information after a predetermined time predicted based on the weather information.
The heat island suppression system according to claim 1. The water spray device is
It is installed at the upper part of the building more than 20m
The heat island control system according to claim 1. When the base station predicts a region where the temperature exceeds the predetermined temperature after a predetermined time, and predicts concentrated heavy rain from weather information after the predetermined time, the selection unit,
Selecting the water spray device installed in the area as the control target device;
The heat island suppression system according to claim 2. If the base station predicts a region where the temperature will exceed the predetermined temperature after a predetermined time,
The selection unit includes:
Selecting the water spray device installed in an adjacent area of the area as the control target device;
The heat island suppression system according to claim 2. In an air conditioning remote monitoring system that remotely monitors multiple air conditioners,
A base station (10) for acquiring weather information;
A plurality of water spray devices (20) capable of communicating with the base station, each installed at a predetermined position, each capable of performing water spray,
The base station
A selection unit (10d) for selecting one or more control target devices from the plurality of water spray devices based on the weather information;
A water spray control unit (10e) for instructing the device to be controlled to spray a predetermined amount of water;
The water spray device is
Water spray is controlled via the air conditioner that is capable of communicating with the base station.
An air remote monitoring system characterized by that. The air conditioner includes an outdoor unit,
The outdoor unit is
An outside temperature sensor is further provided,
The base station
Using the outside air temperature, which is the detection result of the outside air temperature sensor, received from the air conditioner as weather information,
The air remote monitoring system according to claim 7. The base station
Based on the meteorological information after a lapse of a predetermined time when the water spray is performed, an area where the temperature exceeds a predetermined temperature set in advance is predicted again.
The heat island suppression system according to claim 2. (A) obtaining predetermined weather information at a plurality of points;
(B) selecting a predetermined area based on the weather information;
(C) spraying water on the predetermined area,
The heat island suppression method characterized by the above-mentioned.

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