JP4781731B2 - Snow and ice energy utilization system using snow accumulation site - Google Patents

Description

The present invention relates to a snow and ice energy utilization system using a snow accumulation field .

  In golf courses and the like where turf is stretched over a wide area, a large amount of water is required for watering, and a water reservoir is usually provided to store water. For example, Patent Document 1 proposes a technique of purifying water in a reservoir and spraying it on a golf course green.

JP-A-5-317887

  In this reservoir, for example, well water pumped up by a pump is stored, but in the summer drought season, the well water is insufficient and the lawn dies. In addition, a large amount of electricity was consumed to operate the pump, and a large amount of electricity was paid.

The present invention has been made to solve such problems, and provides a snow accumulation field where snow accumulates and a snow ice energy utilization system capable of effectively utilizing the snowmelt water generated in the snow accumulation field. The purpose is to do .

A snow ice energy utilization system according to the present invention includes a snow accumulation field for accumulating snow, a water storage tank for storing snow melt water generated in the snow accumulation field, and a cooling device for cooling the storage, and the cooling device is a water storage tank. A water-cooled heat exchanger that uses snowmelt water stored in the air and an air-cooled heat exchanger that uses outside air, and switching between the water-cooled heat exchanger and the air-cooled heat exchanger is possible It is characterized by being.

The storage and cooling device are connected by a duct, the duct has a branch point, one of the ducts branched at the branch point is connected to a water-cooled heat exchanger, and the other of the branched ducts is air-cooled heat. It can also be connected to an exchanger .
Of the branched ducts, the duct connected to the water-cooled heat exchanger and the duct connected to the air-cooled heat exchanger may each be configured to have a switching valve .
Furthermore, the water storage tank and the water-cooled heat exchanger may be connected by a water supply pipe and a return pipe. In addition, a water intake pump can be provided in the middle of the water pipe.

According to the present invention , the storage can be used as a freezer by connecting a cooling device to the storage formed in the lower part of the snow accumulation field, and water-cooled heat exchange using the snowmelt water stored in the storage tank By switching the operation of the heat exchanger and the air-cooled heat exchanger using the outside air, for example, from spring to autumn, the water-cooled heat exchanger is operated using the snow-melting water in the snow-melting water tank, and the outside air Water-cooled heat exchangers and air-cooled heat exchangers can be used properly according to the season, such as operating air-cooled heat exchangers in the winter when the temperature is low. It can be used as a freezer .

Embodiments of the present invention will be described below with reference to the accompanying drawings.
Embodiment 1
FIG. 1 shows a configuration of a snow and ice energy utilization system according to the first embodiment. A snow accumulation field 1 is defined on a predetermined site. This snow accumulation place 1 is a facility for carrying and depositing snow by a truck 2 or the like. The snow accumulation site 1 is not provided with a heat insulating structure, a roof, or a cover, but a drain pipe is formed at the bottom for collecting and draining snow melt water generated when the accumulated snow melts and storing snow melt water. A snowmelt water tank 3 is formed.

An upper tank 4 is formed at a lower position than the snow accumulation field 1, specifically, a lower position than the snow melting water tank 3, and a lower tank 5 is formed at a lower position than the upper tank 4. The snow melting water tank 3 and the upper tank 4 of the snow accumulation site 1 are connected to each other by a communication pipe 6 arranged so as to descend from the snow melting water tank 3 toward the upper tank 4 at a predetermined inclination angle. The upper part of the lower tank 5 is connected to each other by an overflow pipe 7 disposed so as to descend from the upper tank 4 toward the lower tank 5 at a predetermined inclination angle.
Sprinklers 9 and 10 are connected to the lower tank 5 through a water pipe 8, and a water pump 11 is connected to the water pipe 8. The water sprinklers 9 and 10 are arranged in the vicinity of the water sprayed regions 12 and 13 such as green of the golf course, respectively.

Next, the operation of the first embodiment will be described.
First, snow is transported to the snow accumulation site 1 by the truck 2 or the like and accumulated. Since there is no roof or cover in the snow accumulation field 1, snow is accumulated one after another to form a snow mountain having an external appearance such as a pyramid shape. As the snow conveyed by the truck 2 or the like, the snow removed or removed can be used.

  Since the snow accumulated in the snow accumulation field 1 is not housed in the heat insulation structure or covered with a roof or cover, it begins to melt gradually when it is exposed to rising temperatures or exposed to sunlight, generating snow melting water. To do. This snowmelt water passes through a water distribution pipe formed at the bottom of the snow accumulation site 1 and is collected in the snowmelt water tank 3. Since the upper tank 4 is connected to the snow melting water tank 3 via a communication pipe 6 that falls at a predetermined inclination angle, the snow melting water collected in the snow melting water tank 3 passes through the communication pipe 6 to the upper tank 4. Washed away.

In this way, the snowmelt water generated in the snow accumulation field 1 automatically flows into the upper tank 4 and is stored. As the snow melt water flows in, the water level of the snow melt water in the upper tank 4 gradually rises and reaches the opening of the overflow pipe 7 of the upper tank 4 so that the snow melt water is lowered toward the lower tank 5 at a predetermined inclination angle. Flows into the lower tank 5 through the overflow pipe 7 disposed in the tank. Therefore, the upper tank 4 is prevented from overflowing with snowmelt water.
As described above, the snowmelt water is stored in the lower tank 5 through the upper tank 4. When water spraying to the water sprayed areas 12 and 13 such as the golf course green is required, the water pump 11 is driven, and the snowmelt water is sent from the lower tank 5 to the water sprayers 9 and 10 through the water pipe 8. Watering is performed.

For example, if the area of the snow accumulation field 1 is 15,000 m ² and a pyramid-shaped snow mountain having a base of 90 m and a height of 25 m is formed, about 50,000 tons of snow can be accumulated. It changes according to the environment of the place where the snow accumulation ground 1 is installed, but if the accumulated snow remains about 8,000 tons until the beginning of August in the dry season, it is not necessary to pump well water, and the golf course green It becomes possible to spray water.
As the upper tank 4, for example, a reservoir having a capacity of 1,800 tons can be used, and as the lower tank 5, for example, a reservoir having a capacity of 4,300 tons can be used.
Moreover, as the sprinklers 9 and 10, general-purpose sprinklers can be used.

In the first embodiment, the two tanks of the upper tank 4 and the lower tank 5 are used as the water storage tank for storing the snowmelt water. However, the present invention is not limited to this, and a single water storage tank may be used. Alternatively, three or more tanks may be used.
Moreover, the scale of the snow accumulation field 1 and the capacities of the upper tank 4 and the lower tank 5 are merely examples, and the present invention is not limited to these values.

  In addition, the upper tank 4 was arranged at a lower position than the snow accumulation place 1 and the snow melt collected in the snow melting water tank 3 was caused to flow down to the upper tank 4 through the communication pipe 6. When the upper tank 4 cannot be disposed, the snow melt water can be sent from the snow melt water tank 3 to the upper tank 4 using a pump or the like. Similarly, even when the lower tank 5 cannot be disposed at a lower position than the upper tank 4, the snowmelt water in the upper tank 4 can be sent to the lower tank 5 using a pump or the like. However, in order not to consume useless energy, it is preferable to arrange the upper tank 4 in a lower position than the snow accumulation field 1 and the lower tank 5 in a lower position than the upper tank 4.

Embodiment 2
FIG. 2 shows the configuration of the snow and ice energy utilization system according to the second embodiment. The second embodiment is the snow and ice energy utilization system of the first embodiment shown in FIG. 1, further comprising a vinyl house 14 and a cooling device 15 for cooling by supplying snow melt water to the vinyl house 14. The snow melting water tank 3 and the cooling device 15 in the snow accumulation field 1 are connected by a water supply pipe 16 and the cooling device 15 and the upper tank 4 are connected by a water supply pipe 17.
Since the snowmelt water collected in the snowmelt water tank 3 is in a low temperature state of 2 to 4 ° C., it is possible to perform cooling by circulating this cold water through the cold water pipe in the greenhouse 14.

  When cooling is required in the greenhouse 14 in the summer, the cooling device 15 is driven, and a part of the snowmelt collected in the snowmelt water tank 3 of the snow accumulation site 1 is sent to the cooling device 15 through the water supply pipe 16. It is sent from the cooling device 15 into the greenhouse 14. The snowmelt water is circulated through the chilled water pipe in the greenhouse 14 to cool the inside of the greenhouse 14, returns to the cooling device 15, and is discharged to the upper tank 4 through the water supply pipe 17.

The snowmelt water used for cooling is sent from the cooling device 15 to the upper tank 4 and used for watering in the same manner as in the first embodiment.
In addition, in the greenhouse 14, cultivation of vegetables, flower buds, etc. is performed. Moreover, it is also possible to comprise so that facilities other than a greenhouse can be cooled by the cooling device 15.

Embodiment 3
FIG. 3 shows the configuration of the snow and ice energy utilization system according to the third embodiment. In the third embodiment, in the snow and ice energy utilization system of the second embodiment shown in FIG. 2, a storage 18 is formed in the lower part of the snow accumulation field 1, and the snow and ice block B is stored in the storage 18 at a low temperature. Is.

  The snow and ice block B is a block manufactured by solidifying snow and ice, and has a substantially rectangular parallelepiped shape, for example, as shown in FIG. An upper guide portion 21 that protrudes upward is formed in the center of the upper surface of the snow and ice block B, and a recess corresponding to the upper guide portion 21 is recessed in the lower portion in the center of the lower surface. A lower guide portion 22 is formed. Moreover, the recessed part 23 for inserting the fork of a forklift is formed in the both sides of the lower guide part 22 of a lower surface, respectively.

The concave lower guide portion 22 is formed in such a size that the convex upper guide portion 21 is just fitted, and as shown in FIG. 5, the snow and ice blocks B are stacked in a plurality of stages. Then, the lower guide part 22 of the upper snow and ice block B overlaps and fits on the upper guide part 21 of the lower snow and ice block B. As a result, the blocks B formed from slippery snow and ice can be firmly stacked, and for example, as shown in FIG. 6, a large number of snow and ice blocks B can be arranged and stacked and stored in the storage 18. Become.
In the storage 18, the snow and ice block B is stored at a low temperature by the cold heat of the snow accumulated in the snow accumulation place 1.

  As shown in FIG. 5, even when a plurality of snow and ice blocks B are stacked, the recesses 23 of each snow and ice block B are exposed. Therefore, by inserting a fork of a forklift into the recess 23, each snow and ice block B can be easily Can be carried in and out.

  The snow and ice block B is formed, for example, with a density of 0.7 to 0.8 and a weight of about 1 to 3 tons, and is used as a cooling heat source in general households, public facilities, wholesale markets, and the like. By using the snow and ice block B, cooling using snow and ice is possible without providing a large snow and ice storage. What is necessary is just to carry out from the storage 18 as needed, and to convey by the truck 2 grade | etc.,.

Next, a method for manufacturing the snow and ice block B will be described. First, a wooden or metal mold is manufactured, and snow and water are mixed and put into a mold placed on the base frame. At this time, it is preferable to add snow and water at a volume ratio of 1: 1 to 1: 2. Further, it is not necessary to actively mix with a mixer or the like, and a predetermined amount of snow and water may be added alternately.
Furthermore, the thrown snow and water are left without being pressurized. If it is a cold region, for example, by leaving it for 10 to 20 minutes, snow and water are united and hardened. Thereafter, the formwork may be removed. The base frame is preferably removed after 1 to 2 days.
As a result, a snow and ice block B having a density of 0.7 to 0.8 is manufactured.
By simply exchanging the formwork, a snow and ice block B having a size and weight suitable for the purpose of use can be produced.

Embodiment 4
In Embodiment 1-3 mentioned above, as FIG. 7 shows, the storage 18 is formed in the lower part of the snow accumulation field 1, a cooling device is connected to this storage 18, and the storage 18 is used as a freezer. it can. The cooling device may include either a water-cooled heat exchanger or an air-cooled heat exchanger, and includes both a water-cooled heat exchanger and an air-cooled heat exchanger as shown in FIG. Also good. For example, a water-cooled heat exchanger 24 and an air-cooled heat exchanger 25 are installed outside the snow pile 1, and the water-cooled heat exchanger 24 and the storage 18 are connected by an intake duct 26 and an air duct 27. In addition to the connection, the intake duct 26 and the air duct 27 are branched on the way to connect the air-cooled heat exchanger 25. Switching valves 28 and 29 are respectively provided in the intake duct 26 and the air duct 27 connected to the water-cooled heat exchanger 24, and the intake duct 26 and the air duct 27 connected to the air-cooled heat exchanger 25 are provided. Are respectively provided with switching valves 30 and 31. Further, the water-cooled heat exchanger 24 and the snowmelt water tank 3 of the snow accumulation site 1 are connected by a water supply pipe 32 and a return pipe 33, and a water intake pump 34 is disposed in the middle of the water supply pipe 32. A blower fan 35 is attached in the storage 18.

When the water-cooled heat exchanger 24 is operated, the corresponding switching valves 28 and 29 are opened, the switching valves 30 and 31 connected to the air-cooling heat exchanger 25 are closed, and the intake pump 34 and the blower fan 35 are closed. Drive. Air in the storage 18 is sucked into the heat exchanger 24 through the intake duct 26. Moreover, the snow-melting water in the snow-melting water tank 3 is sent to the heat exchanger 24 through the water supply pipe 32 by driving the water intake pump 34, and heat exchange is performed in the heat exchanger 24 using this snow-melting water. Thereby, after the air sucked from the storage 18 is cooled to a low temperature, it is transported to the storage 18 through the air duct 27 and sent into the storage 18 by the blower fan 35.
In this way, the interior of the storage 18 is maintained at a low temperature, for example, at a temperature of -25 ° C. For this reason, it becomes possible to store the stored items 36 such as frozen foods in the storage 18 in a frozen state.

  On the other hand, when the air-cooled heat exchanger 25 is operated, the corresponding switching valves 30 and 31 are opened and the switching valves 28 and 29 connected to the water-cooling heat exchanger 24 are closed. When the blower fan 35 is driven in this state, the air in the storage 18 is sucked into the heat exchanger 25 through the intake duct 26 and heat exchange using the outside air is performed in the heat exchanger 25. The air sucked from the storage 18 is cooled to a low temperature in the heat exchanger 25, then conveyed to the storage 18 through the air duct 27, and sent into the storage 18 by the blower fan 35.

  By properly using such a water-cooled heat exchanger 24 and an air-cooled heat exchanger 25, for example, the water-cooled heat exchanger 24 is operated from spring to autumn when snow-melting water is present in the snow-melting water tank 3, By operating the air-cooled heat exchanger 25 in the winter when the outside air is at a low temperature, the storage 18 can be efficiently used as a freezer for the entire year.

It is a figure which shows typically the whole structure of the snow-ice energy utilization system which concerns on Embodiment 1 of this invention. It is a figure which shows typically the whole structure of the snow ice energy utilization system which concerns on Embodiment 2. FIG. It is a figure which shows typically the whole structure of the snow ice energy utilization system which concerns on Embodiment 3. FIG. 6 is a perspective view showing a snow and ice block used in Embodiment 3. FIG. It is a perspective view which shows the state which accumulated the snow and ice block. It is a perspective view which shows many snow ice block arrangement | sequences and the piled-up state. It is a figure which shows typically the principal part of the snow-ice energy utilization system which concerns on Embodiment 4. FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Snow accumulation field, 2 tracks, 3 Snowmelt water tank, 4 Upper tank, 5 Lower tank, 6 Communication pipe, 7 Overflow pipe, 8 Water supply pipe, 9, 10 Sprinkler, 11 Water supply pump, 12, 13 Water spray area, 14 Greenhouse, 15 Cooling device, 16, 17 Water pipe, 18 Storage, 21 Upper guide, 22 Lower guide, 23 Recess, 24 Water-cooled heat exchanger, 25 Air-cooled heat exchanger, 26 Air intake duct, 27 Blower duct, 28-31 switching valve, 32 water supply pipe, 33 return pipe, 34 intake pump, 35 blower fan, 36 storage, B snow and ice block.

Claims (5)

A snow pit that accumulates snow,
A water storage tank for storing the melted water generated in the snow accumulation site;
A storage formed at a lower portion of the snow accumulation field;
A cooling device for cooling the storage,
The cooling device includes a water-cooled heat exchanger that uses snowmelt water stored in the water tank, and an air-cooled heat exchanger that uses outside air,
The snow-ice energy utilization system, wherein the water-cooled heat exchanger and the air-cooled heat exchanger can be switched . The storage and the cooling device are connected by a duct,
The duct has a branch point, one of the ducts branched at the branch point is connected to the water-cooled heat exchanger, and the other of the branched ducts is connected to the air-cooled heat exchanger. The snow and ice energy utilization system according to claim 1, The snow ice according to claim 2, wherein the duct connected to the water-cooled heat exchanger and the duct connected to the air-cooled heat exchanger among the branched ducts each have a switching valve. Energy utilization system. The snow ice energy utilization system according to any one of claims 1 to 3, wherein the water storage tank and the water-cooled heat exchanger are connected by a water supply pipe and a return pipe . The snow and ice energy utilization system according to claim 4 , wherein a water intake pump is disposed in the middle of the water pipe .

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