JP3239889U - Land-based aquaculture facility using sustainable energy - Google Patents

Abstract

Kind Code: A1 A land-based aquaculture facility that uses heat from the natural world, can appropriately control the temperature of aquaculture water, and can be safely operated at low cost without adding water to the aquaculture water. I will provide a.
[Solution] A heat source that supplies hot water heated by solar heat, hot spring heat, waste water heat in a power plant, or incineration heat in an incineration plant, groundwater, underground storage water, river water, lake water, agricultural water, or rainwater A sustainable energy land-based aquaculture facility comprising a cold source for supplying cold water cooled by a low temperature difference generator, a solar power generator and/or a small hydroelectric power generator. In particular, the present invention is configured to heat and/or cool aquaculture water by circulating hot water from a hot heat source and/or cold water from a cold heat source. Electrical power supplied from at least one of the device and the small hydroelectric device is configured to provide supplemental heating and/or cooling of hot water from the hot source and/or cold water from the cold source.
[Selection drawing] Fig. 1

Description

TECHNICAL FIELD The present invention relates to a land-based aquaculture facility that can be operated using sustainable energy, and more particularly to a closed recirculating aquaculture system (RAS).

Fossil and nuclear fuels on Earth are estimated to be depleted by the end of this century, according to a clear projection. That is, all kinds of energy resources on earth, such as fossil fuels (petroleum, coal, natural gas), nuclear fuels, and methane hydrate, are predicted to run out in about 100 years.

Another major problem currently facing mankind is global warming due to the release of carbon dioxide ( _CO2 ) into the earth's thin atmospheric boundary layer, caused primarily by the burning of fossil fuels. The British Government's Chief Scientific Advisor, Sir David King, has said that global warming poses a greater threat than terrorism (Japan Times, February 4, 2005). Recent supercomputer predictions (Saito and Wakashima, Green Life, March 2006) indicate that atmospheric CO ₂ concentration will increase to 1250 ppmv within 100-200 years.

On the other hand, the urban environment of megacities like Tokyo is getting worse and worse. For example, in the metropolitan area, the concentration of _NO2 is still increasing, which exceeds regulatory levels. The deterioration of the urban environment can be mainly attributed to the increase of automobiles in urban areas. Such a serious environmental problem is called "urban warming (or heat island)" and is caused by concentrated energy consumption in urban areas.

These two major factors force mankind to change their lifestyles and use renewable energies other than fossil fuels, such as solar, wind, ocean, geothermal and biomass. .

In the field of terrestrial aquaculture facilities for cultivating marine products on land, in order to heat and raise the temperature of aquaculture water, instead of using natural energy, electric heating wire heaters that generate resistance heat by transmitted electric power are used. It is being used (for example, Patent Document 1).

Japanese Patent No. 6653797

As described above, the conventional aquaculture tank for land-based aquaculture uses heating equipment driven by an external power supply. In addition, although many aquaculture tanks are equipped with heating equipment, they are not equipped with cooling equipment. The reason for this is the high cost of cooling aquaculture water, which has been done by blocking light, adding water, or using an air conditioner.

However, shading may not provide a sufficient cooling effect, and addition of water may cause changes in the components of the culture water. Of course, the use of air conditioners does not utilize the heat of the natural world.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a land-based aquaculture facility that utilizes the heat of the natural world and that uses sustainable energy to appropriately control the temperature of the aquaculture water.

Another object of the present invention is to provide a land-based aquaculture facility that utilizes heat from the natural world and can be safely operated at low cost without adding water to the aquaculture water. be.

The present invention is a heat source that supplies hot water heated by solar heat, hot spring heat, waste water heat in power plants, or incineration heat in incineration plants, groundwater, underground storage water, river water, lake water, agricultural water, or rainwater A sustainable energy land-based aquaculture facility comprising a cold source for supplying cold water cooled by a low temperature difference generator, a solar power generator and/or a small hydroelectric power generator. In particular, the present invention is configured to heat and/or cool aquaculture water by circulating hot water from a hot heat source and/or cold water from a cold heat source. Electrical power supplied from at least one of the device and the small hydroelectric device is configured to provide supplemental heating and/or cooling of hot water from the hot source and/or cold water from the cold source.

By utilizing hot and cold heat sources in the natural world, both reduction of environmental load and reduction of energy consumption (energy saving) are achieved. In particular, since it is configured to heat and/or cool aquaculture water by circulating hot water from a hot heat source and/or cold water from a cold heat source, the heat is used as it is and after the heat is used. can be returned to the natural world or reused, resulting in a state in which there is almost no load on the natural world. Also, power consumption can be solved with natural energy by providing auxiliary heating and/or cooling with power generated by low temperature difference power generation, solar power generation, and/or small hydro power generation. Furthermore, it is possible to appropriately control the temperature of the culture water, and since the culture water is not added with water, it is safe and can be operated at low cost. Furthermore, in the land-based aquaculture facility, which is a closed circulation type facility, the water flow generated by the pump can be recovered by small hydroelectric power generation, so that it is possible to save the stored energy at night or to store additional power at night.

A water tank comprises a water tank body for containing aquaculture water, and an injection tank provided outside the water tank body so as to surround the water tank body. /or preferably configured for circulation.

In this case, it is more preferable that the pouring tank is formed between the heat insulating wall provided on the outside and the heat conducting wall provided on the inside.

Electric power supplied from at least one of a low temperature difference power generation device, a solar power generation device, and a small hydro power generation device is configured to drive a pump provided in a water channel connecting the water tank and the septic tank. is also preferred.

It is also preferable that the low temperature difference power generation device includes a generator that performs temperature difference power generation using a temperature difference between hot water from the hot heat source and cold water from the cold heat source.

It is also preferable that the photovoltaic power generation device includes a plurality of solar panels and a storage battery connected to the plurality of solar panels and storing electric power from the plurality of solar panels.

It is also preferable that the small hydraulic power generator is configured to generate power by a hydraulic power generator provided in a water channel that connects the water tank and the septic tank.

According to the present invention, by utilizing hot and cold heat sources in the natural world, both reduction of environmental load and reduction of energy consumption (energy saving) are achieved. In particular, since it is configured to heat and/or cool aquaculture water by circulating hot water from a hot heat source and/or cold water from a cold heat source, the heat is used as it is and after the heat is used. can be returned to the natural world or reused, resulting in a state in which there is almost no load on the natural world. Also, power consumption can be solved with natural energy by providing auxiliary heating and/or cooling with power generated by low temperature difference power generation, solar power generation, and/or small hydro power generation. Furthermore, it is possible to appropriately control the temperature of the culture water, and since the culture water is not added with water, it is safe and can be operated at low cost. Furthermore, in the land-based aquaculture facility, which is a closed circulation type facility, the water flow generated by the pump can be recovered by small hydroelectric power generation, so that it is possible to save the stored energy at night or to store additional power at night.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram schematically showing the overall configuration of one embodiment of a land-based aquaculture facility using sustainable energy of the present invention; FIG. 2 is a plan view schematically showing the configuration of a water tank in the land-based aquaculture facility of FIG. 1; FIG. 3 is a plan view showing an enlarged part of the water tank of FIG. 2; FIG. 3 is a cross-sectional view taken along the line AA of FIG. 2; 2 is a block diagram schematically showing the configuration of a water tank and a septic tank in the land-based aquaculture facility of FIG. 1. FIG.

FIG. 1 schematically shows the overall configuration of one embodiment of a land-based aquaculture facility using sustainable energy of the present invention.

In FIG. 1, 10 is a water tank containing aquaculture water for land-based aquaculture of aquatic products such as fish and shrimp, 11 is a water channel for circulating the aquaculture water in the water tank 10, and 12 is in the middle of the water channel 11. The provided septic tank, 13 indicates a pump provided in the middle of the water channel 11, and 14 indicates a small hydroelectric generator provided in the middle of the water channel 11, respectively.

In FIG. 1, furthermore, 15 is a photovoltaic power generation device comprising a plurality of solar panels 15a and a storage battery 15b for storing electric power from the solar panels 15a, 16 is a water tank constituting the heat source of the present invention, and 17 is 4A and 4B respectively show the water tanks constituting the cold heat source of the present invention; A water tank (heat source) 16 is configured to be connectable to a solar water heater 18, a hot spring wastewater heat source 19, a thermal power generation wastewater heat source 20, and an incineration plant incineration heat source 21, and circulates between these hot water sources. It is configured to store hot water heated by. The water tank (cold heat source) 17 is configured to be connectable to a groundwater (well water) source (tank) 22, a river/lake water source 23, an agricultural water source 24, and a rainwater source 25. It is configured to store cold water cooled by circulating with.

In FIG. 1, 26 is a low temperature difference power generation device that generates power using a temperature difference, 27 is an auxiliary heating and cooling device that auxiliary heats or cools hot or cold water, and 28 is the electricity for this land-based aquaculture facility. control devices for controlling each of them. Although not shown in FIG. 1, the controller 28 controls the small hydroelectric power generator 14, the solar power generator 15, the low temperature difference power generator 26, the pump 13, the auxiliary heating/cooling device 27, and the on-land aquaculture equipment. It is electrically connected to other electrical power equipment and configured to optimally computer control their operation.

A water tank (hot heat source) 16 and a water tank (cold heat source) 17 are connected to a low temperature difference power generation device 26, and configured to supply hot water and cold water with a temperature difference to the low temperature difference power generation device 26. It is In addition, the water tank (heat source) 16 and the water tank (cold heat source) 17 are connected to a later-described water injection layer 10b of the water tank 10 via an auxiliary heating/cooling device 27, and supply hot or cold water to the water injection layer 10b. and are configured to circulate. The water temperature of the aquaculture water in the water tank 10 can be controlled by controlling the amount (supply ratio) of hot water and cold water supplied to the water injection layer 10b. When the temperature of the hot water from the water tank (heat source) 16 is sufficiently high, the heating in the auxiliary heating/cooling device 27 is not necessary, and the temperature of the cold water from the water tank (cold heat source) 17 is sufficiently low. In this case, cooling in the auxiliary heating/cooling device 27 becomes unnecessary.

The output power of the small hydroelectric generator 14 is applied to and stored in the storage battery 15b of the solar power generation device 15, and the output power of the low temperature difference power generation device 26 is also supplied to the storage battery 15b (not shown). is applied to and stored. The output power of the low temperature difference power generation device 26 is applied to the auxiliary heating/cooling device 27 and used for auxiliary heating and auxiliary cooling. The output of the storage battery 15b is applied to the auxiliary heating/cooling device 27 and used for auxiliary heating and auxiliary cooling. Furthermore, although not shown, the output power of the small hydroelectric generator 14, the output power of the storage battery 15b, and the output power of the low temperature difference power generation device 26 are used to drive the pump 13 and other power equipment of this land-based aquaculture facility. configured to be available for

FIG. 2 schematically shows the configuration of the water tank 10 in this embodiment, FIG. 3 shows a part of the water tank 10 in an enlarged manner, and FIG. 4 shows a cross section AA of FIG. .

As shown in these figures, the tank 10 in this embodiment has a double structure consisting of a tank main body 10a for containing aquaculture water and a water injection layer 10b formed on the outer peripheral side and the bottom side thereof. That is, the water tank 10 has a double structure having water tanks 10b provided on the outer peripheral side and the bottom side so as to surround a water tank main body 10a that stores culture water, and a heat insulating wall 10c that cuts off heat on the outermost side. A heat-conducting wall 10d for conducting heat is provided on the inner side thereof. A pouring tank 10b is formed between the heat insulating wall 10c and the heat conducting wall 10d. Hot water from the hot heat source 16 or cold water from the cold heat source 17 is poured into the water injection layer 10b and is circulated. By using such a double-structured water tank 10, it is possible to improve the heat insulation and heat retention effects of the breeding water, as well as the heating effect of hot water from the hot heat source 16 and the cooling effect of cold water from the cold heat source 17. can be enhanced.

FIG. 5 schematically shows the configuration of the water tank 10 and the septic tank 12 in this embodiment. However, in the figure, the illustration of the pump 13 and the small hydroelectric generator 14 is omitted.

As shown in FIG. 5, a water tank main body 10a of the water tank 10 is connected to a septic tank 12 through a water channel 11, and culture water contained in the water tank main body 10a is purified in the septic tank 12 and then purified in the water tank main body 10a. 10a. The septic tank 12 uses a special ceramic to reduce the average particle size of water molecules to decompose protein-containing organic sludge such as excrement from cultured fish and food residue, without clogging the filter. An aquaculture water reformer 12a for improving the quality of aquaculture water is provided.

In the water tank body 10a of the water tank 10, although not shown, there are vertical axis horizontal rotors driven by the water surface of the still water area and an aeration header pipe installed on the bottom of the water just below the horizontal rotors. Air is supplied from an air lift blower to this diffuser header pipe and is discharged to generate a large convection throughout the still water area. As a result, a water flow is generated in the aquaculture water in the water tank body 10a, thereby preserving the water quality.

The small hydroelectric generator 14 recovers the energy given to the water channel 11 by operating the pump 13 in the closed circulation system. With this small hydroelectric generator 14, the energy of the water flow generated by the pump 13 can be recovered, and the stored energy can be saved at night or additional power can be stored at night. The compact hydroelectric generator 14 can be implemented using a commercially available microhydroelectric generator, a picohydroelectric generator, or other small hydroelectric generator.

The photovoltaic power generation device 15 uses both photovoltaic power generation during the daytime and power storage for the nighttime to provide a backup power supply and electric energy in the aquaculture facility. This photovoltaic power generation device 15 can be implemented using a commercially available photovoltaic power generation device that is generally used.

The low temperature difference power generation device 26 utilizes the temperature difference between hot water from the hot heat source 16 and cold water from the cold heat source 17 to perform temperature difference power generation. This low temperature difference power generation device 26 rotates with a low temperature difference of 90 ° C. A temperature difference power generation device that generates power by a Shinra turbine devised by Professor Emeritus Takeo Saito of Tohoku University (for example, Japanese Patent Application Laid-Open No. 2005-291112). (Temperature difference power generation device described in ) can be used.

The auxiliary heating/cooling device 27 uses power generated by the small hydroelectric generator 14, the solar power generator 15, and/or the low temperature difference power generator 26 to supplement the heating of hot water from the hot heat source 16 or from the cold heat source 17. It provides supplemental cooling of the chilled water, and can be implemented using a common electrical cooling device, electrical heating device, or heat exchange device.

Next, the operation and effects of the land-based aquaculture facility of this embodiment will be described.

In this embodiment, hot water from the hot heat source 16 and/or cold water from the cold heat source 17 is circulated in the injection tank 10b of the water tank 10 to heat and/or cool the culture water in the water tank main body 10a. The hot water from the hot heat source 16 and the cold water from the cold heat source 17 are obtained from hot water sources and cold water sources shown in Table 1 that exist in nature. The hot water source can provide hot water of 50 to 100°C, and the cold water source can provide cold water of around 15°C.

The underground temperature is about 15°C throughout the year, and groundwater and river water do not rise as much as the water tank temperature. Resources such as groundwater (well water), underground storage water, river water, lake water, agricultural water, and rainwater are all around us as sources of natural energy. On the other hand, aquaculture water must be maintained at an appropriate temperature, but it is permissible to provide a range of temperature ranges. Therefore, by utilizing heat sources in the natural world for heating and cooling aquaculture water, it is possible to both reduce environmental load and reduce energy consumption (energy saving). In this way, if the heat is used as it is, and after the heat is used, it is returned to the natural world, the load on the natural world is almost zero. As a result, land-based aquaculture facilities can be operated and maintained with sustainable energy.

The hot water from the hot heat source 16 and the cold water from the cold heat source 17 are subjected to auxiliary heating or auxiliary cooling by the auxiliary heating/cooling device 27 as necessary, and then injected into the injection tank 10b of the water tank 10. /or cycled. At that time, the auxiliary heating/cooling device 27 is driven using electric power generated by the small hydraulic power generation device 14 , the solar power generation device 15 and/or the low temperature difference power generation device 26 . That is, it is driven using electric power generated by natural energy.

Hot water from the hot heat source 16 and cold water from the cold heat source 17 are applied to the low temperature difference power generation device 26, and power is generated by the temperature difference between the hot water and the cold water. That is, power is generated by natural energy and supplied.

In the closed circulation system, the energy of the water flow generated by the pump 13 can be recovered by the small hydroelectric generator 14, so that energy can be saved. Additional power storage is possible.

As described above, according to this embodiment, hot water from the hot heat source 16 and/or cold water from the cold heat source 17 is circulated to heat and/or cool the culture water. The heat is used as it is, and after the heat is used, it can be returned to the natural world or reused, resulting in a state in which there is almost no load on the natural world. In addition, power consumption is reduced by performing auxiliary heating and/or cooling with power generated by low temperature difference power generation using hot water from the hot heat source 16 and cold water from the cold heat source 17, solar power generation, and small hydroelectric power generation. It can be solved with natural energy. As a result, it is possible to appropriately control the temperature of aquaculture water using only sustainable energy, and it does not cost much. Furthermore, since the culture water is not directly heated or cooled, there is no burden on living organisms (such as cultured fish and bacteria that work beneficially in aquariums). Since there is no need to add water or change water in the culture water, safe operation is possible. Furthermore, in the land-based aquaculture facility, which is a closed circulation type facility, the water flow generated by the pump 13 can be recovered by the small hydroelectric power generator 14, so that stored energy can be saved at night or additional power can be stored at night. becomes.

All of the above-described embodiments are illustrative of the present invention and not restrictive, and the present invention can be implemented in various other variations and modifications. Therefore, the scope of the present invention is defined only by the claims of the utility model registration and their equivalents.

10 water tank 10a water tank main body 10b water injection layer 10c heat insulation wall 10d heat conduction wall 11 water channel 12 septic tank 12a water reformer for aquaculture 13 pump 14 small hydroelectric generator 15 solar power generator 15a a plurality of solar panels 15b storage battery 16 water tank (heat source )
17 Water tank (cold heat source)
18 Solar water heater 19 Hot spring wastewater heat source 20 Thermal power generation wastewater heat source 21 Incineration plant incineration heat source 22 Groundwater (well water) source (tank)
23 River water/lake water source 24 Agricultural water source 25 Rain water source 26 Low temperature difference power generation device 27 Auxiliary heating and cooling device 28 Control device

Claims (7)

Hot water source that supplies hot water heated by solar heat, hot spring heat, waste water heat in power plants, or incineration heat in incineration plants, and cooled by groundwater, underground storage water, river water, lake water, agricultural water, or rainwater A cold heat source that supplies cold water and at least one of a low temperature difference power generation device, a solar power generation device and a small hydro power generation device,
It is configured to heat and/or cool aquaculture water by circulating hot water from the hot heat source and/or cold water from the cold heat source, and the low temperature difference power generation device, the solar power generation device, and configured to provide auxiliary heating and/or cooling of hot water from the hot heat source and/or cold water from the cold heat source by electrical power supplied from at least one of the small hydroelectric generators; A land-based aquaculture facility using sustainable energy, characterized by: A water tank comprises a water tank body for containing aquaculture water, and an injection tank provided outside the water tank body so as to surround the water tank body. 2. The sustainable energy land-based aquaculture facility of claim 1, configured to inject and/or circulate cold water. 3. The land-based aquaculture facility using sustainable energy according to claim 2, wherein the water injection tank is formed between a heat-insulating wall provided outside and a heat-conducting wall provided inside. Electric power supplied from at least one of the low temperature difference power generation device, the solar power generation device, and the small hydroelectric power generation device is configured to drive a pump provided in a water channel connecting a water tank and a septic tank. The land-based aquaculture facility using sustainable energy according to claim 1, characterized in that: 2. The low temperature difference power generation device according to claim 1, comprising a generator that performs temperature difference power generation using a temperature difference between hot water from the hot heat source and cold water from the cold heat source. Land-based aquaculture facility using sustainable energy. 2. The solar power generation device according to claim 1, wherein the solar power generation device comprises a plurality of solar panels, and a storage battery connected to the plurality of solar panels and storing electric power from the plurality of solar panels. Land-based aquaculture facility using sustainable energy. 2. The sustainable energy-using according to claim 1, wherein the small hydroelectric generator is configured to generate power by a hydroelectric generator installed in a water channel connecting a water tank and a septic tank. Land-based aquaculture equipment.

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