JP3860827B2 - Evaporative heat cooling system using rainwater and method for suppressing temperature rise using rainwater - Google Patents

Description

  The present invention relates to a rainwater-based evaporative heat cooling system and a method for suppressing temperature rise using rainwater, and more particularly, to a rainwater-based evaporative heat cooling system that takes environmental measures for buildings.

During the hot summer months, the heat island phenomenon occurs in the city center where the temperature is higher than in the suburbs. The reason why the heat land phenomenon occurs is as follows.
(1) Asphalt roads become hot due to solar heat during the daytime, and the heat accumulated at night is released.
(2) Trees discharge a large amount of water into the air. As the green area decreases, the amount of water evaporated from plants and the ground surface decreases, and the latent heat of evaporation decreases.
(3) The use of various types of energy increases due to the concentration of the population in the city, and the amount of exhaust heat increases.
(4) Since multiple reflections are made on the wall surface of a concept building or the like, urban structures are easily heated.

  As a countermeasure against the heat island, a system (see Non-Patent Document 1) for cooling a building such as a building by a photocatalytic method is known. In this method, first, titanium oxide that becomes hydrophilic by light is applied (applied) to the roof. A little water is poured there, and the water is thin and covers the surface without gaps. And this water takes the heat of vaporization and evaporates, lowering the temperature of the building.

Chunichi Shimbun, “Covering the roof with a photocatalyst” [online], July 2003, Chunichi Shimbun article, [November 13, 2003 search], Internet <URL: http: //www.chunichi .co.jp / banpaku / topics / 2003 / 0709-1.html>

  On the other hand, in heavy snowfall areas in winter, a large amount of snow accumulates on the arcades of shopping streets and the roofs of residential buildings. In Hokkaido and the Tohoku region, a few meters of snow is generally observed. If the snow on the roof is not removed as necessary, the building will eventually be destroyed.

However, in the method using the photocatalyst, dust or foreign matter may adhere to the titanium oxide photoreceptor. In the state where there is dust or foreign matter, it is irregularly reflected from the reception of sunlight. Thereby, the evaporation efficiency of water falls. The temperature inside (back side) of the photoreceptor, that is, the temperature of the outer wall surface of the building rises. Moreover, the cost of installing this photoreceptor is high. There is also a problem with the service life.
In particular, acid rain may occur particularly in urban areas. Acid rain is rain in which air pollutants, nitrogen oxides and sulfur oxides, dissolve. The concrete that forms the outer wall causes corrosion such as cracks and reinforcing bars due to this acid rain. As a result, the service life of the outer wall surface is reduced.
In order to remove the snow on the roofs of buildings in heavy snowfall areas, people used snow removal. Snow removal requires a lot of traffic, time and money. In addition, accidents such as falling from a snow-covered roof are likely to occur.

An object of the present invention is to provide a rainwater-based vaporization heat cooling system that suppresses the sunlight rising, which increases the temperature of the outer wall surface of a building and the temperature of the room, and a method for suppressing the temperature increase using rainwater.
Another object of the present invention is to provide an evaporative heat cooling system using rainwater that preserves the outer wall surface of a building even when acid rain falls, and a method for suppressing temperature rise using rainwater .

The invention according to claim 1 is a main pipe provided vertically from the upper floor side of the building to the lower floor, and is provided to extend horizontally from the main pipe to each floor of the building. Rainwater is poured into a pipe with a small diameter, and is provided on the pipe with a small diameter. This is a method for suppressing temperature rise using rainwater sprayed by spraying the rainwater around it.
The invention according to claim 5 is a main pipe provided vertically from the upper floor side of the building to the lower floor, and is provided to extend horizontally from the main pipe to each floor of the building. A pipe having a small diameter, the pipe having a small diameter is formed so that the lower floor side of the building is smaller than the upper floor side of the building, and sprays rain water on the outer wall surface of the building and its surroundings to spray water. It is a rainwater-based vaporization heat cooling system provided with a plurality of spray ports.
Water supply primary water is water used for drinking water. Groundwater is water drawn from a well. Further, rainwater may be temporarily stored and used.
The building is, for example, a commercial facility, a building, a single-family house, an apartment house (apartment and apartment), and the outer wall surface includes a wall material (wall surface) of a building, a window, and the like. The roofing material includes a rooftop of a building, a fence and the like.
Pipes for flowing water are provided on the outer wall surface of the building or the entire surface of the roofing material. The pipe is provided with a spray port for spraying water directly around the outer wall surface and the window. The spray port is constituted by a through hole having a diameter of approximately 1 mm or approximately 0.5 mm. The material of the pipe is not limited. For example, a pipe made of plastic (vinyl chloride) does not cost much.
In cold districts, it is recommended to wrap the pipes with insulation so that the water does not freeze. The diameter of the upstream pipe (higher floor pipe) is made larger, and the diameter of the downstream pipe (lower floor pipe) is made smaller than that of the upstream side. This is because water can be sprayed substantially evenly with respect to the outer wall surface from the upstream side to the downstream side. Further, the spray port is configured by providing a large number of minute through holes along the pipe. By forming the opening area of the through hole so small, water is ejected vigorously from the spray port in the form of a mist. The water pressure is also set so that water can be sprayed.
And the said waterworks primary water or groundwater is sprayed. The amount of spray is appropriately selected depending on the climate and temperature. Depending on the climate and temperature, it may be sprayed constantly or divided into a plurality of times for a predetermined period. The number of times the spray is divided into a plurality of times is not limited.

In invention of Claim 1 and Claim 5, water is sprayed and sprayed toward the outer wall surface of a building, the whole surface of a roofing material, and those circumference | surroundings. The sprayed water absorbs sunlight and is evaporated and evaporated. Moreover, the sprayed water adheres to an outer wall surface or the like, and is vaporized and evaporated by sunlight. Moreover, the water adhering to the outer wall surface takes the temperature of the outer wall surface and is vaporized. As a result, the temperature rise of the outer wall surface due to sunlight can be suppressed.
In addition, sunlight entering the room can be suppressed, and an increase in indoor temperature can be suppressed. Thereby, it is not necessary to set the preset temperature of the air conditioner lower, and the power consumption of the air conditioner can be reduced. As a result, energy consumption is reduced and the vicious cycle of the heat island can be broken.
Spraying on the outer wall surface or roofing material of the building can also serve as cleaning (cleaning) of the outer wall surface of the building or the roofing material. Even when acid rain falls, the acid rain remaining on the outer wall surface can be removed by spraying water. Thereby, maintenance, such as an outer wall surface of a building, can be performed.
Building cleaning costs can also be reduced. Furthermore, when a person living in the building observes the state of spraying on the window, a refreshing feeling can be felt.

  The position of the water tank is not limited. It can be on the roof or underground. Moreover, it may be outdoors or indoors. A spraying port such as primary water for water supply is provided on the outer wall surface of the building or the top of the roofing material.

  The outer wall surface of the building or the uppermost part of the roofing material is provided with spray ports for spraying the entire surface and the periphery thereof. In addition, a water storage tank is provided for collecting and storing water sprayed on the building. And the primary water of a water supply, the water after use, etc. are supplied to a spraying port from a water tank. Water supply primary water is sprayed from the spray port onto the outer wall surface of the building or the entire surface of the roofing material. The sprayed water is collected by a basket provided on the ground. Then, it is filtered to become clean water and returned to the water tank. The returned water is again supplied from this water tank to the spray port.

According to a second aspect of the present invention, rainwater is collected in a rain gutter provided on the roof of a building and stored in a rainwater reservoir. The rainwater stored in the rainwater reservoir is poured into the pipe, and the plurality of sprays are collected. The method for suppressing temperature rise using rainwater according to claim 1, wherein the water is sprayed and sprayed on the outer peripheral surface of the building and its surroundings from the mouth.
According to a fourth aspect of the present invention, the rainwater according to any one of the first to third aspects uses the primary water or the groundwater stored in the water tank instead of the rainwater when the rain is low. This is a method for suppressing the temperature rise.
The building is provided with a water tank that collects rainwater and stores it. The means for collecting rainwater is not limited. For example, a rain gutter is provided on the roof, and rainwater that has flowed through the roof is collected and stored in a water storage tank. The stored rainwater is sprinkled. This can be configured in a separate system (parallel) from the watering system of tap water.

  In the invention of Claim 2 and Claim 4, the water storage tank which stores the rain which fell to the building is provided. And the rainwater stored in this water tank is utilized as water sprayed on the outer wall surface of a building, or the whole surface of a roofing material. Thereby, the waste water of resources can be reduced without using the primary water supply.

According to a third aspect of the present invention, the rainwater stored in the rainwater storage tank is guided to a toilet wash water tank by a pipe, and the rainwater is used as toilet wash water. It is a suppression method.
Water is once sprayed and collected, and the used water and rain water are used as toilet water in the building. The water tank is connected with a water supply pipe to the toilet with a pipe, and the pump is used for pumping and distributing water.

In the invention described in claim 3, tap water may be cut off due to drought countermeasures or disruption of a disaster lifeline such as an earthquake. At this time, a toilet may not be used in public facilities such as schools, government offices, and hospitals.
Therefore, the water stored in the water storage tank is supplied to a toilet washing water tank provided in each toilet existing in the building. Therefore, the cooling water of the building can be used as toilet cleaning water. The water tank and toilet flush water tank are connected.

According to the present invention, the building is provided with the spraying port for spraying water toward the outer wall surface of the building or the entire surface of the roofing material and the periphery thereof. Then, water is sprayed and sprayed on the outer wall surface of the building or the entire surface of the roofing material and its surroundings. The sprayed water absorbs direct sunlight from the sun and is vaporized and evaporated. Thereby, the sunlight can be suppressed from being applied to the outer wall surface or window of the building, and the temperature increase in the outer wall surface or the room can be suppressed.
Further, direct sunlight into the room can be suppressed, and an increase in indoor temperature can be suppressed. In addition, the set temperature of the air conditioner need not be set low, and the power consumption of the air conditioner can be reduced. As a result, energy consumption is reduced and the vicious circle of the heat island phenomenon can be interrupted.
Further, spraying on the outer wall surface or roofing material of the building can also serve as washing of the outer wall surface of the building or the roofing material. Even when acid rain falls, the acid rain remaining on the outer wall surface can be removed by spraying water on the wall surface. Thereby, the outer wall surface etc. of a building can be maintained.
Further, in heavy snowfall areas, a water supply primary water spray port is provided at the top of the arcade or the top of the roof of a detached building. And water supply primary water is spouted from a spraying opening toward a roof. Thereby, it is possible to melt snow accumulated on the roof during cold weather. There is no need for lots of time, money, etc. for snow removal.

An embodiment of the present invention will be described below with reference to FIGS.
As shown in FIG. 1, the water supply primary water utilization vaporization thermal cooling system which concerns on a present Example is comprised including the following equipment in the building 10 which is a building. That is, for example, a rectangular parallelepiped-shaped water storage tank 11 is disposed on the roof or underground of the building 10. The water tank 11 is connected to a water pipe of a water supply (not shown). The water storage tank 11 is covered with a heat insulating material (not shown) so that the temperature of the water in the tank does not rise.
Alternatively, a rain gutter 15 may be formed on the roof surface of the building 10 and the gutter 15 may be connected to the water storage tank 11. Thereby, in the tank of the water storage tank 11, water supply primary water, groundwater, or rainwater is stored.
A water supply port 17 is provided in the water storage tank 11 on the roof, and a main vertical pipe 13a having a diameter of about 20 cm is disposed from the water supply port 17 toward the ground. Then, horizontally extending pipes 13b having a diameter of about 3 to 5 cm are disposed on the floors from the main pipe 13a. The pipe 13b is formed along the entire surface so as to surround the building at the outer wall surface 14a of each floor or the top of the window. The pipe on the upstream side has a larger diameter and is smaller on the downstream side. It connects so that it may flow from the main pipe 13a to the small diameter pipe 13b. A large number of spray ports (not shown) having a diameter of approximately 1 to 0.5 mm are formed in the pipe 13b along the length direction toward the outer wall surface 14a and the window 14b and the periphery thereof.
On the ground part of the building 10, a rain gutter 15 is arranged to collect water that has flowed out along the surface of the outer wall surface 14a or the window 14b. The gutter 15 is formed along the outer surface so as to surround the outer wall surface 14 a of the building 10. In addition, a pipe (not shown) for returning the water collected in the gutter 15 to the water storage tank 11 by a pump (not shown) is also provided. Thereby, the pipe 13b is stretched around the wall surface in the building 10 and the window 14b by using the water storage tank 11 as a heart. The diameter of the spray outlet of the top floor pipe is larger than that of the pipe of the lower floor. This is because the water on the upper floor flows down on the outer wall surface of the lower floor, so that the amount of water sprayed on the top floor is maximized.
Moreover, in these watering systems, a pump and a valve are provided as appropriate, and these can be operated remotely by, for example, a control panel. In addition, the watering situation can be configured to be monitored without a camera. Furthermore, a temperature sensor, a water amount sensor, etc. can also be arranged. Sprinkling can be controlled according to weather conditions such as the weather.

Next, a method for spraying water on the building will be described with reference to FIG.
First, a predetermined amount of primary water or the like in the water supply is stored in the water storage tank 11. Primary water for the water supply is supplied from the water pipe. At the same time, the rain that falls on the roof is collected by the gutter 15 and stored in the water tank 11. Since rainwater contains dust and impurities, it is filtered before use. When ground water such as well water is used, a water storage tank 11 is provided in the basement, the ground water is pumped up and stored in the water storage tank 11. Then, water is pumped up from the water storage tank 11 to the rooftop by a pump or the like and stored in the water storage tank 11 on the rooftop.
Next, as shown in FIG. 1, first, the pump is driven by, for example, computer control to feed water from the water storage tank 17 through the water supply port 17. The sent water is passed through the main vertical pipe 13a. Then, water is sent from the main pipe 13a to the horizontal pipes 13b provided on each floor. Water is sent from the pipe 13a having a large diameter to the pipe 13b having a small diameter. Thereby, it becomes high-pressure water, and water is ejected vigorously from the spray port of the pipe surrounding the outer wall surface. The spray port is configured with a large number of minute through holes. Therefore, water can be spouted and sprayed. In this manner, water is sprayed directly or toward the periphery of the outer wall surface 14a, the roofing material, or the window 14b of the building 10 from a spray port (not shown).
The sprayed water absorbs the temperature of sunlight and is evaporated and evaporated. Further, the sprayed water adheres to the outer wall surface and is evaporated and evaporated. Thereby, the direct sunlight is suppressed and the temperature rise of the wall surface 14a or the window glass 14b of the building is suppressed. In particular, it is effective to spray a large amount of water on the outer wall surfaces or windows on the south, east, and west sides that are susceptible to direct sunlight. In addition, direct light into the room is also suppressed, and an increase in indoor temperature can be suppressed. As a result of this watering, the outside air temperature decreases, and the indoor temperature can be sufficiently lowered without setting the set temperature of the indoor air conditioner lower than necessary, and the power consumption in the air conditioner can be reduced.
Thereafter, the sprayed water flows toward the ground along the outer wall surface 14a or the window 14b. The water that has flown to the ground is collected in the gutter 15 and returned to the water tank 11 again. Thus, the water circulates inside and outside the building with the water storage tank 11 as a heart while being sprayed on the outer wall surface 13b of the building.
A pipe 13b is also formed on the top of the window 14b of the building 10. This pipe 13b is provided with a spray port, from which water is jetted toward the window 14b. Thereby, while suppressing the temperature rise of the window 14b, the washing | cleaning of the window glass 14b can also be used. At this time, a refreshing feeling can be given to the person living in the building 10 by water flowing over the entire surface of the window glass 14b.
Furthermore, acid rain may occur in urban areas due to air pollution. The concrete that forms the outer wall of the building causes corrosion such as cracks and reinforcing bars due to this acid rain. As a result, the service life of the outer wall surface is reduced. Therefore, water is sprayed on the outer wall surface of the building to wash away acid rain components.
Specifically, an acid rain sensor (not shown) is installed on the roof. This sensor detects acid rain having a pH of 3.6 or less (strong acid rain). Then, after the rain stops, the water spray is applied to the outer wall surface and the acid rain is washed away. Thereby, the outer wall surface etc. of a building can be maintained. In addition, the useful life of these can be extended. In addition, acid rain is collected in rain gutters and discharged into sewers, and is not reused. This is due to the operation of valves provided in the pipes and water tanks of the system.
The amount of water flowing from the pipe 13b is appropriately selected depending on the weather and the temperature. The spraying time / number of times may be divided into a plurality of times. During cold weather, water may be sprayed to defrost the window 14b.
Moreover, a water flow sound may be generated by flowing water, and noise from the surroundings may be sound-insulated.
The water in the water storage tank 11 is not limited to the temperature reduction of the building, but can be used instead of a cleaning tank (not shown) of a toilet provided on each floor in the building 10. Tap water may be cut off due to drought countermeasures or disruption of lifeline during disasters such as earthquakes. Even in this case, the toilet can be used. This system is effective when applied to public facilities such as schools, government offices, and hospitals.
Furthermore, you may use the water of the water storage tank 11 as water of the sprinkler at the time of a fire.

The water supply primary water utilization vaporization cooling system was applied to heat exchange of the outdoor unit 30 of the air conditioner. Next, this will be described with reference to FIGS. 2 (a) and 2 (b).
As shown in FIGS. 2A and 2B, the air conditioner is provided with a vertically installed outdoor unit 30. Water from the water tank is used for this outdoor unit.
Inside the outdoor unit 30, a heat exchanger (not shown) is provided. This heat exchanger takes in the refrigerant inside the air conditioner, condenses the refrigerant with a fan (not shown) in the outdoor unit 30, exchanges heat with the air in the room, and cools the room. At this time, when the refrigerant is cooled by the fan, the hot air is discharged in the horizontal direction from the hot air discharge port 35 opened in the vertical surface of the outdoor unit 30. For this reason, the outdoor unit 30 is arranged in an open space outdoors.
However, this discharge of warm air raises the ambient temperature. As the temperature rises further, the set temperature of the air conditioner is set lower and the power consumption of the air conditioner also increases. In addition, the amount of hot air discharged increases, causing a vicious cycle in which the temperature rises.
Therefore, the above problem can be solved by lowering the temperature of the hot air discharged from the outdoor unit 30. For this reason, the following devices were attached to the outdoor unit 30 of the air conditioner. That is, the outdoor unit 30 has a warm air outlet 35 that takes in outside air or discharges warm air to the outside air. The outdoor unit 30 is provided with an indoor blowing pipe 34 for blowing air into the room. Then, a bag-like net 32 body is provided at a close distance along the front surface of the hot air discharge unit 35 of the outdoor unit 30.
The material of the main body 54 of the net body 32 is a mixture of a scoured stainless steel metal wire and copper scrap. For copper scrap, scraps from cutting of copper products are used. On the front and back surfaces of the main body 54, mesh nets 50 formed of heat-resistant carbon fibers are disposed. The mesh size of the mesh net 50 is approximately 0.3 mm to 0.5 mm.
A pipe 52 that allows water to flow through the entire surface of the net body 32 is disposed above the net body 32. For example, the pipe 52 connected to the water storage tank is provided with a plurality of spray ports 53 (not shown). A box-shaped collar 57 is disposed below the net body 32. A drainage pipe 58 for draining this water (hot water) is provided in the tub 57.

Next, a method for cooling hot air from the outdoor unit 30 will be described with reference to FIGS. 2 (a) and 2 (b).
When the indoor air conditioner operates, a fan (not shown) in the outdoor unit 30 rotates. Then, the hot air is discharged from the hot air discharge unit 35 of the outdoor unit 30. The discharged hot air passes through the net body 32 provided in the hot air discharge unit 35 of the outdoor unit 30. The warm air does not travel straight, but passes through the net body 32 while being in contact with the main body 54 of the net body 32.
At this time, water is sprayed from the spray port 53 of the pipe 52 provided in the upper part of the net body 32. Then, water is sprayed on the entire surface of the net body 32. The water sprayed on the net body 32 is collected in a box-shaped bottle 57 and drained from a drain pipe 58. The warm air passes through the net body 32 while being cooled by water. Thereby, the temperature of the warm air discharged from the outdoor unit 30 can be reduced. In particular, an increase in temperature can be suppressed when the air conditioners provided in each store such as a restaurant or an apartment house are densely packed.
The copper scrap 54 of the net body 32 is oxidized when exposed to the air. When water is added to this, a trace amount of copper ions dissolve in the water. The copper ions prevent the bacteria in the net body 32 from propagating.

The cooling method of the warm air from the vertical outdoor unit 30 can also be applied to the outdoor unit 30 that ejects hot air installed on the rooftop of a building or the like. That is, as shown in FIG. 3, the outdoor unit 30 installed in a building generally has a cylindrical shape, and a hot air discharge unit 35 is provided on the upper portion of the cylindrical shape. A hood 61 is provided above the hot air discharge unit 35 to cover the hot air discharge unit 35 and change the direction of hot air blowing. The hood is bent approximately 90 degrees. By disposing the hood, the outdoor unit can be protected from rain, snow, etc., and the service life can be extended. Furthermore, a duct 62 that blows warm air downward is provided at the tip of the hood 61. In addition, a fan 67 for discharging warm air to the outside is provided at the tip of the duct 62.
The net body 32 is disposed at the upper outlet of the hood 61 so as to cover the entire surface of the space flow passage where the hood 61 is not provided. The net body holds metal scrap or the like so as to be able to exchange heat in the same manner as described above. Water for watering is supplied to the net body 32 from a nozzle 35 provided above the net body 32. As water for watering, rainwater is collected by a water collector 65, stored in a rainwater storage tank 63, and supplied from the rainwater storage tank 63 using a pump 66. In the case of light rain, water for watering may be supplied from the water storage tank 11 provided on the rooftop. It should be noted that the storage of rainwater in the rainwater storage tank 63 is preferably started 20 to 30 minutes after the start of rain. The water supplied to the net body 32 is collected and supplied to the secondary filtration device 64. Then, the water is filtered by the secondary filtration device 64 and is secondarily used for flush water for toilets and the like.
Next, a method for cooling the outdoor unit 30 will be described with reference to FIG.
During cooling, warm air is discharged upward from the warm air discharge unit 35 of the outdoor unit 30. The warm air passes through the net body 32 via the hood 61. At this time, primary water is supplied to the net body 32 from the rainwater reservoir 63 or the reservoir 11 installed on the rooftop. The primary water is pumped upward by the water storage tank 11 or the rain water storage tank 63 via the flow pipe 52 and sprayed from the nozzle 53 provided above the net body 32. Therefore, the warm air discharged from the outdoor unit 30 is cooled while being in contact with the net body 32 sprayed with water. Thereafter, the cooled hot air is discharged outside through the fan 67 of the duct 62. Thereby, the temperature rise by discharge | emission of the warm air from the outdoor unit 30 can be suppressed.

The said system is applicable also to the detached building 20, as shown in FIG. First, the water tank 11 is installed outdoors or in the basement of the detached building 20. A water pipe (not shown) is connected to the water tank 11.
A pipe 13b is disposed around the water storage tank 11 at the top of the outer wall surface 14a of the house or the top of the roof 21. Further, pipes 13b are also arranged at the windows 14b and the entrance. The pipe 13b is provided with a water spout (not shown) for ejecting water toward the outer wall surface 14a and the window 14b.
Water supply primary water is sent from the water storage tank 11 to the main pipe 13a. The water sent to the main pipe 13a is sent to the pipe 13b provided on the top of the outer wall surface 14a or the top of the roof 21, respectively. Then, water is sprayed from the water spout of each pipe 13 b toward the outer wall surface 14 a or the roof 21. Thereby, in the summer, water is sprayed on the entire outer wall surface 14a or the window 14b, so that the direct sunlight can be prevented from being irradiated and the temperature rise of the detached building 20 can be suppressed.
In heavy snowfall areas, a large amount of snow accumulates on the roof 21 of the detached building 20. If snow is not removed from the roof 21, the detached building 20 will be damaged. Therefore, a water spout is provided in the pipe 45 of the roof 21 and water is ejected from the water spout. Thereby, it is possible to melt snow on the roof 21 of the house.
Water pipes in cold regions are buried deeper underground than in warm regions. For this reason, the water temperature is higher than the water in the water pipes in the warm regions. The water pressure in the water pipe is also set high. Therefore, water does not freeze when the snow melts.

Next, the vaporization heat cooling system using the primary water of the arcade in the shopping street will be described with reference to FIG.
As shown in FIG. 5, a pipe 45 having a diameter of approximately 3 to 5 cm is disposed along the formation direction of the arcade 40 at the top of the roof 21 of the arcuate arcade 40. The pipe 45 is provided with many water spouts (not shown) having a diameter of approximately 2.5 cm to 3 cm along the curved surfaces on both sides of the arcade. A water tank 11 is provided in a store 44 in the arcade 40. A water pipe (not shown) is connected to the water tank 11. A water supply pipe 43 that supplies water from the water storage tank 11 to the pipe 45 is provided along the arcade support 46 and the inner surface of the roof 21. At both ends of the roof 21 of the arcade 40, rain gutters 15 are provided along the direction in which the arcade 40 is formed.
Next, a method for melting snow on the roof 21 of the arcade 40 will be described.
Water supply primary water is stored in a water tank 11 provided in a certain store 44 from a water pipe (not shown). The stored water is supplied to the water supply pipe 43 and supplied to the pipe 45 at the top of the roof of the arcade 40. And water is sent to the pipe 45 toward the formation direction of the arcade 40. The water sent to the pipe 45 is sprinkled from the water spout (not shown) of the pipe 45 toward the roof 21. Thereby, the snow accumulated on the roof 21 is melted by the sprinkled water. Then, snow is removed from the roof 21 of the arcade 40.
The water spray can melt snow by adjusting the amount of water depending on the amount of snowfall. Since the snow is melted and removed with water, the removed snow does not fall on the path of the arcade 40 and is not left, and does not hinder traffic.
In summer, water is sprayed on the roof 21 of the arcade 40 to spray water. Thereby, the temperature rise by the sunlight irradiation in the arcade 40 can be suppressed. Moreover, if the material of the roof 21 of the arcade 40 is formed of a heat insulating material, the temperature inside the arcade 40 can be reduced in combination with the cooling by the spray. Therefore, it is not necessary to lower the set temperature of the air conditioner in each store 44, and power consumption can be reduced.
You may make it give a refreshing feeling to the shopper of the arcade 40 by seeing water flowing on the roof 21 of the arcade 40. In order to give a refreshing feeling, the roof 21 is made transparent so that water can flow from the arcade 40 to the roof 21 can be observed. When water is colored and passed, the arcade 40 becomes gorgeous.
Furthermore, the water in the water storage tank 11 provided in the store 44 can be used as flush water for toilets installed in the store 44. It can also be used as fireproof water.

Next, a case where solar power generation using solar energy is installed on the roof of a building will be described. This solar system and the water spray cooling system can be provided simultaneously.
The module 71 for capturing sunlight used in the solar power generation system is installed on the roof of a normal building. And this module 71 is installed so that it may face eastward at the time of sunrise, ie, eastward at sunrise, westward at sunset, and westward to eastward on the next day. Therefore, as shown in FIG. 6, the module 71 is installed on the gantry 72, and the gantry 72 is installed away from the roof surface of the building 10. The gantry 72 is movable (seesaw type) so that the light receiving angle of the module 71 is changed depending on the direction of the sun. Thereby, while incorporating a solar type electric power generation system, a vaporization heat cooling system can be simultaneously taken in a building.

Next, the evaporative heat cooling system using the primary water used for watering the road will be described.
As shown in FIG. 7 and FIG. 8, a reservoir 11 for storing rainwater that has fallen on the primary water supply water or on the road 74 and that has conventionally flowed into the river etc. from the rainwater drainage groove 75 is provided on the survey side. In the basement of the sidewalk 80.
For storing water in the water storage tank 11, a drainage groove 75 and a U-shaped groove 76 are provided in the basement of the sidewalk 80, and when raining on the road 74, rainwater is passed through the drainage groove 75 and the U-shaped groove 76. Supplying to the water storage tank 11 is performed.
On the other hand, in the central separation band 79 of the road 74, a water spray pipe 77 is disposed along the road. The rainwater is supplied to the water spray pipe 77 through the water storage tank 11. The water sprinkling pipe 77 is provided with a large number of water spouts 78 for spraying on one surface of the road 74 to spray water.
When the weather is fine, water supply primary water or rainwater stored from the water storage tank 11 is caused to flow through the water spray pipe 77. Thereby, water is sprayed from the water spout 78 to the road surface of the road 74. Water can be sprayed on the roadway 74, the sidewalk 80, and the roadside trees on the green belt. If a water spout is installed at a high place in the median strip and the water storage tank 11 is provided on a sidewalk or survey road that is lower than the median strip, water can be sprayed on one side of the road. As a result, it is possible to suppress the direct sunlight from being irradiated and to suppress the temperature rise of the road surface 74. It is also possible to clean the air by flowing dust or the like accumulated on the road surface 74 by watering.
In a cold region, water melted from snow accumulated on the road 74 may be used in place of the primary water supply water or rainwater stored. In cold regions, the above system may be used to melt snow on the road 74.

The watering system on the road can be applied to an elevated road such as an urban expressway.
Specifically, the water spray pipe 82 is disposed along the road on the side wall 84 portion of the elevated highway 81. The water spray pipe 82 is provided with a number of water spray ports 83 for spraying water on the road 81 of the highway. The central zone of the road is lowered so that water flows on one side of the road 81. A drainage groove is provided in the central belt. Under the elevated, there is provided a water storage tank 11 for spraying and spraying water on the road surface 81 of the elevated expressway and storing this water through the drainage groove. The water storage tank 11 can also be provided before and after the pier. Then, the water supply primary water or rain water once stored in the water storage tank 11 is sprayed again over the entire road 81 of the elevated expressway. Thereby, the temperature of the elevated road 81 can be lowered during a sunny day in summer and the like, which is particularly effective in suppressing the heat island phenomenon in the urban area having the urban expressway 81.
As a result, rooftops of buildings such as buildings, windows, water spray systems on walls and roads (including sidewalks) that are exposed to direct light, and urban highway and highway rainwater use sprinkler systems are rainwater under the sidewalks as temporary reservoirs. In particular, it is effective in sewage treatment (merging type) during heavy rain, and can be prevented from flowing into rivers and seas without being treated.
Further, as described above, it can be installed at a lower cost than the merging type is divided, and it can also be used as a summer heat island countermeasure. Furthermore, the present invention can also be applied to snow melting measures on sidewalks and roadways during winter snow accumulation.

It is the perspective view which applied the water supply primary water utilization vaporization thermal cooling system which concerns on one Example of this invention to the building. The water supply primary water utilization vaporization thermal cooling system which concerns on one Example of this invention is applied to the outdoor unit of an air conditioner, (a) is a perspective view of an outdoor unit, (b) is a side view of an outdoor unit It is. It is a side view which shows the structure of the outdoor unit which has a warm air discharge part above which concerns on one Example of this invention, and its peripheral device. It is the perspective view which applied the water supply primary water utilization vaporization thermal cooling system which concerns on one Example of this invention to the detached building. It is the front view which applied the tap water primary water utilization vaporization thermal cooling system concerning one example of this invention to the arcade of a shopping district. It is the front view which applied the water supply primary water utilization vaporization thermal cooling system which concerns on one Example of this invention to the solar power generation system. It is the front view which applied the tap water primary water utilization vaporization thermal cooling system concerning one example of this invention to watering of a general road. It is the top view which applied the water supply primary water utilization vaporization thermal cooling system which concerns on one Example of this invention to the watering of a general road. It is the front view which applied the water supply primary water utilization vaporization thermal cooling system which concerns on one Example of this invention to the watering of a highway.

Explanation of symbols

10 Building (building),
11 Water tank,
13a, 13b pipes,
14a, 14b outer wall surface (window),
21 Roof,
30 outdoor unit,
40 arcades,
74 Road.

Claims (5)

A main pipe installed vertically from the upper floor to the lower floor of the building,
The main pipes are installed horizontally on each floor of the building, and rainwater flows to pipes with a smaller diameter than the main pipes.
Sprinkle water by spraying the rain water on the outer wall of the building and its surroundings from a plurality of spray holes provided on a pipe with a small diameter, the size of which is smaller on the lower floor side of the building than on the upper floor side of the building To suppress temperature rise using rainwater. Rainwater is collected in the rain gutter provided on the roof of the building and stored in the rainwater storage tank.
The rainwater stored in the rainwater reservoir is poured into the pipe and sprayed to the outer peripheral surface of the building and its surroundings from the plurality of spray ports to suppress temperature rise using rainwater according to claim 1. Method.   The method for suppressing a temperature rise using rainwater according to claim 2, wherein the rainwater stored in the rainwater storage tank is guided to a toilet washing water tank by a pipe, and the rainwater is used as toilet washing water.   The method for suppressing temperature increase using rainwater according to any one of claims 1 to 3, wherein, when there is little rain, water supply primary water or groundwater stored in a water tank is used instead of the rainwater. A main pipe installed vertically from the upper floor to the lower floor of the building,
  The main pipe is provided extending horizontally on each floor of the building, and includes a pipe having a smaller diameter than the main pipe,
  The pipe with a small diameter is formed so that the size of the lower floor of the building is smaller than the upper floor of the building, and a plurality of spray holes for spraying rain water on the outer wall surface of the building and its surroundings are provided. Rainwater vaporization heat cooling system.

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