JPH08136014A - Multipurpose artificial watercourses - Google Patents

Abstract

PURPOSE: To provide multipurpose artificial watercourses which are not only utilized as facilities harmonized with water but also function as regional cooling and heating facilities. CONSTITUTION: The construction work is executed so as to form a closed loop in an area 1 where various facilities 40 are established. The work includes watercourses 50 having an inflow and an outflow ponds 51, 52, a pump 53 for allowing water to flow to the watercourses 50, power generation facilities 70 for heating or cooling water in the watercourses 50 by utilizing waste heat, circulation paths 61 for heat pumps for circulating water from the watercourses to water heat source heat pumps 41 so as to use water in the watercourses 50 as a heat source for the water heat source heat pumps 41, and an introduction path 63 for introducing waste water purified by a treating facilities 80 into the watercourses 50.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multipurpose artificial waterway which can be used as a district heating and cooling facility for heating and cooling a large number of buildings in a certain area.

[0002]

2. Description of the Related Art As an example of conventional district heating and cooling equipment,
The following district heating and cooling systems can be mentioned. This district heating and cooling system installs a large-capacity boiler, refrigerator, chiller, etc. at one location in a certain area that contains many buildings, and is cooled by the boiler, refrigerator, chiller, etc. to a predetermined temperature. The adjusted cold water or the heated hot water adjusted to a predetermined temperature is supplied to each building in the area by a heat insulating pipe buried in the ground to simultaneously cool and heat each building. As a result, energy efficiency was improved and energy saving was achieved compared to the case where individual heating and cooling equipment was installed.

[0003]

However, in the conventional district heating and cooling equipment, a large-capacity boiler, refrigerator, and chiller must be provided, and a heat insulating pipe is buried in the ground and distributed to each building. There is a problem that large-scale construction is required because it must be installed.

Further, in recent years, artificial waterways have been constructed as hydrophilic facilities in some areas which are considered suitable for constructing district cooling and heating facilities. However,
This artificial waterway also has a problem that the construction cost is too high to be provided as a mere hydrophilic facility.

In view of the above circumstances, it is an object of the present invention to provide a multipurpose artificial waterway which is used not only as a hydrophilic facility but also as a district heating and cooling facility.

[0006]

The multipurpose artificial waterway according to claim 1 has a waterway which is constructed so as to form at least one closed loop in an area where a plurality of facilities are provided and which circulates and circulates water. The waterway is provided so that a part or all of the waterway is exposed to the ground, and the waterway is provided with heating and cooling equipment for heating or cooling the water in the waterway, and at least one of the plurality of facilities. One of the facilities is provided with a water heat source heat pump that uses the water in the water channel as a heat source.

The multipurpose artificial waterway according to claim 2 is characterized in that an artificial pond is provided in the waterway.

The multipurpose artificial waterway according to claim 3 is characterized in that an artificial waterfall is provided in the waterway.

According to a fourth aspect of the multipurpose artificial waterway, a fountain is provided in the waterway.

A multipurpose artificial waterway according to a fifth aspect of the present invention is characterized in that a plurality of lids are detachably laid along the waterway along the waterway.

In the multipurpose artificial waterway according to a sixth aspect of the present invention, at least one of the plurality of facilities is provided with purification equipment for purifying wastewater in the area and introducing the purified wastewater into the waterway. It is characterized by

[0012]

According to the multipurpose artificial waterway according to the first aspect, the waterway can be used as a hydrophilic facility because part or all of the waterway is provided so as to be exposed on the ground.

Further, it is possible to exert the function as a district heating and cooling facility in which the water in the water channel is used as the water heat source of the water heat source heat pump.

Further, the temperature of the water in the water channel which decreases or rises when the water flowing in the water channel is used as the heat source of the water heat source heat pump is such that the solar radiation of the sun, evaporation of water, heat transfer to the outside air, and heat transfer to the ground. By heat transfer and heating by, and heating or cooling of water by cooling equipment, it is possible to balance within a temperature range suitable for use as a heat source of a water heat source heat pump, so compared with a well-known heat pump using air as a heat source. It is possible to avoid a sharp drop in the heating function in the severe cold season or the cooling function in the extreme heat.

According to the multipurpose artificial waterway of claim 2,
Since an artificial pond is provided in the waterway, the hydrophilic function can be further improved.

According to the multipurpose artificial waterway of claim 3,
Since the artificial waterfall is provided in the water channel, the hydrophilic function can be further improved, and the heat of evaporation from the water in the water channel can be increased.

According to the multipurpose artificial waterway of claim 4,
Since the fountain is provided in the water channel, the hydrophilic function can be further improved, and the heat of evaporation from the water in the water channel can be increased.

According to the multipurpose artificial waterway of claim 5,
Since a large number of lids are detachably laid along the water channel in the water channel, when it is desired to increase the heat of evaporation from the water in the water channel to cool the water, such as during summer, When it is desired to keep the water in the waterway warm, such as in winter, by removing the lid, the water in the waterway can be adjusted to a water temperature suitable for use as the water heat source of the water heat source heat pump by opening the lid.

According to the multipurpose artificial waterway of claim 6, at least one of the plurality of facilities is provided with a purification facility for purifying the drainage of the area and introducing the purified drainage into the channel. Therefore, clean water can be used to replenish the water in the water channel that disappears due to evaporation or the like. Therefore, the water quality in the water channel can be maintained in a clean state suitable for hydrophilic use.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing an example of a multipurpose artificial waterway 100 of the present invention constructed in a region 1, where various facilities 40 are provided. The various facilities 40 include an energy center 200, a government office, a meeting place, a store, a supermarket, a management office, a kindergarten, an elementary school, a junior high school, a library, a post office, a police station, a clinic, a nursing home for the elderly, a special home for the elderly, a special home. There are nursing homes, warm water pools, workshops, offices, hotels, houses, etc., and water heat source heat pumps 41 are installed in these various facilities 40, respectively.

Further, in the area 1, a water channel 50 is formed so as to sew between the various facilities 40, and the water channel 50 has an inflow pond 51 at the center thereof. An outflow pond 52 is formed above the center of the inflow pond 51, and between the inflow pond 51 and the outflow pond 52, a pump 53 for pumping the water in the inflow pond 51 into the outflow pond 52. Is installed. Four outward paths 54 extending radially are provided from the outflow pond 52, and the outward paths 54 are inclined so that the water in the outflow pond 52 flows out. The tip of each outward path 54 is connected to an annular path 55 formed in an annular shape, and four return paths 56 are radially provided between the annular path 55 and the inflow pond 51,
The return path 56 is inclined downward toward the inflow pond 51. The outward path 54, the circular path 55, and the return path 56 are provided so as to be exposed to the ground.

A heat pump circulation path 61 is provided between the outward path 54, the circulation path 55, or the return path 56 of the water channel 50 and the water heat source heat pump 41 of the various facilities 40, respectively.
The water in 0 is provided so as to form a circulation path that can be used as a heat source of the water heat source heat pump 41.

The energy center 200 of the various facilities 40 is provided with a power generation facility 70, a heat exchanger 71a, and an absorption type refrigerator 71b. The heat exchanger 71a, the absorption type refrigerator 71b and the water channel 50 are connected to each other. A pipe 62 is provided between them. In summer, the absorption chiller 7 for the office 40a and the hotel 40b that is operated by the waste heat of the power generation equipment 70
1b is used at night when its capacity becomes surplus and piping 62
The water in the water channel 50 is cooled via the heat exchanger 71a to cool the water in the water channel 50 via the pipe 62 in the winter.

Further, the energy center 200 is provided with a treatment facility 80 for purifying the wastewater of the office 40a or the hotel 40b, respectively.
Performs up to the tertiary treatment of wastewater as shown in FIG.
An introduction passage 63 for introducing the purified wastewater into the water passage 50 is provided between the treatment facility 80 and the water passage 50 shown in FIG.

Since the multipurpose artificial waterway 100 and the like have the above-mentioned structure, first, the inflow and outflow basin 51 of the waterway 50,
52, the outward path 54, the loop path 55, and the return path 56 are provided so as to be exposed on the ground, so that the water path 50 can be used as a hydrophilic facility. Therefore, area 1
Can improve the living environment.

Further, since the inflow / outflow ponds 51 and 52 as hydrophilic facilities are provided at the center of the water channel 50, the hydrophilic function can be improved by the inflow / outflow ponds 51 and 52. Therefore, the living environment of the area 1 can be further improved.

Next, when water is pumped from the inflow pond 51 provided in the central portion of the water channel 50 to the outflow pond 52, the water is forwarded 54, circular 55, as shown by the arrow in FIG. The various facilities 40 in the area 1 can be circulated by returning to the inflow pond 51 through the return path 56.

FIG. 2 is a diagram showing the water circulation in the area 1 where the multipurpose artificial waterway 100 is provided. Office 40a,
The wastewater of the various facilities 40 except the hotel 40b is discharged to the sewage, but a part of the wastewater of the office 40a and the hotel 40b is not discharged to the sewage and is sent to the treatment facility 80, where the secondary,
Tertiary treatment is performed and purified. Part of the purified water is returned to the office 40a or the hotel 40b, and part is introduced to the water channel 50. The water in the waterway 50 evaporates or permeates the soil and returns to the atmosphere while circulating in the waterway 50, or returns to the river / sea area. In this way, the water in the area 1 where the multipurpose artificial waterway 100 is provided circulates.

Further, of the various facilities 40, the office 40a
Further, the hotel 40b is provided with the treatment equipment 80 as described above, and the treatment equipment 80 is provided with the introduction passage 63 for introducing the purified wastewater into the water passage 50 as shown in FIG. It is possible to replenish the water in the water channel 50, which disappears due to such reasons as clean water. Therefore, the water quality of the water in the water channel 50 can be kept in a clean state suitable for hydrophilic use. Therefore, since the hydrophilic function can be further improved, the living environment can be further improved.

FIG. 3 is a diagram showing the heat balance of the multipurpose artificial waterway 100 in the summer. In the summer, the heat exchange means 71 provided in the power generation equipment 70 has the heat exchanger 71a replaced by the absorption refrigerator 71b. The heat is supplied, and the absorption refrigerator 71b cools the water in the water passage 50 through the pipe 62.

Therefore, as shown in FIG. 1, the water circulating in the water channels 50 is supplied to the water heat sources of the various facilities 40 via the heat pump circulation channels or pipes 61 respectively provided between the various facilities 40 and the water channels 50. The water heat source heat pump 41 is introduced into the heat pump 41, is used as a medium for discarding heat, and returns to the water channel 50 again. Due to the exhaust heat of the water heat source heat pump 41 of the various facilities 40, the temperature in the water channel 50 rises as shown in FIG.

However, in the water channel 50, as shown in FIG. 1, a pipe 62 is provided between the water channel 50 and the absorption refrigerator 71b provided in the energy center 200, and it is originally intended for the office 40a and the hotel 40b. The absorption refrigerator 71b provided can be utilized at night when the capacity thereof is surplus to cool the water in the water channel 50 through the pipe 62.

The cooling by the absorption refrigerator 71b is
Taking into account the temperature increase by the water heat source heat pump 41, the water temperature of the water heat source heat pump 41 is taken into account by the evaporation of water in the water channel 50, the heat transfer from the outside air, the temperature decrease due to the underground heat transfer and the temperature increase due to the solar radiation of the sun. The balance is carried out within a range suitable for use as a heat source.

Further, since the temperature of the water in the water channel 50 can be balanced within the range suitable for use as the heat source of the water heat source heat pump 41 in this way, the water heat source heat pump 41 blows air especially in extreme heat. Higher cooling efficiency can be achieved as compared with a known heat pump as a heat source.

The power generation equipment 70 supplies electric power to various facilities 40, and the exhaust heat of the power generation equipment 70 passes through the heat exchanger 71a to pools such as elementary schools and junior high schools and offices 40a, large buildings such as hotels 40b, and stores. Hot water is being supplied. Further, the power generation equipment 70 discards the unusable excess heat by the cooling tower 103.

FIG. 4 is a view showing the heat balance of the multipurpose artificial waterway 100 in winter. In the winter, the heat exchange means 71 provided in the power generation equipment 70 has its heat exchanger 71a,
It is provided to heat the water in the pipe 62.

Therefore, as shown in FIG. 1, the water circulating in the water channel 50 passes through the heat pump circulation paths 61 provided between the various facilities 40 and the water channel 50, respectively, and the water heat source heat pump 41 of the various facilities 40 is supplied. Is used as a heat source of the water heat source heat pump 41 and returns to the water channel 50 again. The water heat source heat pump 41 of the various facilities 40 absorbs heat to lower the temperature in the water channel 50.

However, in the water channel 50, as shown in FIG. 1, the power generation equipment 7 provided in the energy center 200 is installed.
A pipe 62 is provided between the pipe 62 and the heat exchanger 71a shown in FIG.
It is provided to heat the water inside. Therefore, the heat exchanger 71a can heat the water in the water channel 50 whose temperature has dropped.

Further, the heating by the heat exchanger 71a causes the evaporation of water in the water channel 50, the temperature decrease due to the heat transfer from the outside air, the solar radiation of the sun, and the temperature increase due to the underground heat transfer to the temperature decrease by the water heat source heat pump 41. In consideration of this, the water temperature is balanced within a range suitable for use as the heat source of the water heat source heat pump 41.

In addition, since the temperature of the water in the water channel 50 can be balanced within the range suitable for use as the heat source of the water heat source heat pump 41, the water heat source heat pump 41 is air-cooled especially in a severe cold season. Higher heating efficiency can be achieved as compared with a known heat pump that uses a heat source as a heat source.

The power generation equipment 70 supplies electric power to various facilities 40, and the exhaust heat of the power generation equipment 70 is passed through the heat exchanger 71a to pools such as elementary schools and junior high schools and offices 40a, large buildings such as hotels 40b, and stores. Hot water and heating are provided. Further, in the power generation equipment 70, excess heat that cannot be used is discarded by the cooling tower 103.

From the above, the multipurpose artificial waterway 100 of the above embodiment can be used as a hydrophilic facility and can also function as a district cooling and heating facility. Further, since the water in the water channel 50 is used as the heat source of the water heat source heat pump 41, simple construction can be performed as compared with the conventional district cooling and heating equipment.

Incidentally, the multipurpose artificial waterway 100 in the above embodiment.
In the above, inflow and outflow ponds 51 and 52 were provided as hydrophilic facilities.
Further, a fountain device may be provided. Further, an artificial waterfall may be provided in the water channel 50, for example, in the middle of the outward channel 54. This makes it possible to further improve the hydrophilic function, and
In the summer, the temperature of the water in the water channel 50 can be lowered by radiating heat.

In addition, a plate-like lid that closes the upper opening of the water channel 50 of the above-described embodiment is removably laid along the water channel 50 so that the temperature of the water decreases when the temperature is low, such as in winter. It can be reduced. When the temperature is high, such as in summer, by removing the lid, the heat of evaporation from the water in the water channel can be increased and the water can be cooled. Therefore, by attaching and detaching the lid to the water channel 50, the water in the water channel 50 can be adjusted to a water temperature suitable for use as the water heat source of the water heat source heat pump 41, so that the district cooling and heating function can be improved. .

Further, the multipurpose artificial waterway 10 in the above embodiment.
In 0, the heating and cooling equipment for heating and cooling the water in the water channel 50 is the power generation equipment 70. However, even if the exhaust heat of the refuse incinerator is used, the exhaust heat of the factory is also used. You may do it.

In addition, the multipurpose artificial waterway 10 in the above embodiment.
At 0, the power generation facility 70 is connected to the energy center 20.
However, the power generation facility 70 may be provided in the facility 40 such as the office 40a and the hotel 40b.

Further, the multipurpose artificial waterway 10 in the above embodiment.
In 0, the pump 53 pumps water from the inflow pond 51 to the outflow pond 52 so that the water flows through the water channel 50. However, by ejecting the water along the water channel 50, a water flow is generated. Of course, you may do so.

[0048]

According to the multipurpose artificial waterway of the first aspect, it can be used as a hydrophilic facility for improving the living environment and can also function as a district heating and cooling facility. Further, the construction can be performed more easily than the conventional district heating and cooling equipment.

Further, since the amount of water held in the waterway is large, a heat storage effect can be expected, that is, in the summer, cooling by natural heat radiation at night can be used in the daytime, and a surplus refrigeration function at night can be used. It can be used in the daytime by storing heat. Further, since it is possible to avoid a sudden decrease in the heating function in the severe cold season or the cooling function in the extreme heat, it is possible to improve the cooling / heating function.

According to the multipurpose artificial waterway of claim 2,
Since the artificial pond can improve the hydrophilic function, the living environment can be further improved.

According to the multipurpose artificial waterway of claim 3,
Since the artificial waterfall can improve the hydrophilic function, the living environment can be further improved. Also,
Since the heat of evaporation from the water in the waterway can be increased,
In summer or the like, the water in the overheated water channel can be adjusted to a water temperature suitable for use as the water heat source of the water heat source heat pump. Therefore, the district cooling and heating function can be improved.

According to the multipurpose artificial waterway of claim 4,
The fountain has the same effect as the multipurpose artificial waterway according to the third aspect.

According to the multipurpose artificial waterway of claim 5,
By attaching and removing the lid to the water channel, the water in the water channel can be adjusted to a water temperature suitable for use as the water heat source of the water heat source heat pump, so that the district cooling and heating function can be improved.

According to the multipurpose artificial waterway of claim 6,
Since the quality of the water in the water channel can be kept in a clean state suitable for hydrophilic use, the hydrophilic function can be further improved. Therefore, the living environment can be further improved.

[Brief description of drawings]

FIG. 1 is a diagram showing an example of a multipurpose artificial waterway of the present invention constructed in a region.

FIG. 2 is a diagram showing water circulation in an area where the multipurpose artificial waterway of FIG. 1 is provided.

FIG. 3 is a diagram showing a heat balance of the multipurpose artificial waterway in FIG. 1 in summer.

FIG. 4 is a diagram showing the heat balance of the multipurpose artificial waterway in FIG. 1 in winter.

[Explanation of symbols]

 1 ... Region 40 ... Various facilities (facility) 41 ... Water heat source heat pump 50 ... Water channel 51 ... Inflow pond (artificial pond) 52 ... Outflow pond (artificial pond) 70 ... Power generation equipment (heating and cooling equipment) 80 ... Purification equipment (treatment) Facility)

Claims (6)

[Claims] 1. An area having a plurality of facilities is constructed so as to form at least one closed loop, and has a water channel for circulating and circulating water, and the water channel is partially or entirely exposed to the ground. And a heating / cooling facility for heating or cooling the water in the water channel is provided in the water channel, and at least one of the plurality of facilities uses the water in the water channel as a heat source. A multipurpose artificial waterway that is equipped with a water heat source heat pump. 2. The multipurpose artificial waterway according to claim 1, wherein the waterway is provided with an artificial pond. 3. The multipurpose artificial waterway according to claim 1, wherein an artificial waterfall is provided in the waterway. 4. The multipurpose artificial waterway according to claim 1, 2 or 3, wherein a fountain is provided in the waterway. 5. The multipurpose artificial waterway according to claim 1, wherein a plurality of lids are detachably laid along the waterway along the waterway. 6. At least one of the plurality of facilities is provided with a purification facility that purifies the drainage in the area and introduces the purified drainage into the water channel. Item 1. The multipurpose artificial waterway according to 1 or 2 or 3 or 4 or 5.