JP2014093969A - Plant cultivation support system and method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a plant cultivation support system and method in which stable cultivation of plants independent of a hot/cold climate, and power supply to a cultivation facility can be performed at low cost.SOLUTION: Provided is the plant cultivation support system 1 for supporting an indoor cultivation of plants by supplying power to a facility 4 in which plants are cultivated indoors, and by heating or cooling of the indoors of the facility 4. The system comprises: a power supply apparatus 2 for performing the power supply, utilizing heat generated by combusting waste solid fuel 211; and a warming/cooling apparatus 3 for heating or cooling indoors, utilizing geothermal energy.

Description

  The present invention relates to a plant cultivation support system and method, and more particularly to a plant cultivation support system and method suitable for supporting indoor cultivation of plants.

  In recent years, it has been promoted to realize a recycling-oriented society that reuses waste as energy resources, circulates resources and suppresses the generation of waste, thereby reducing the load on the environment as much as possible. .

  In the past, various attempts have been made to achieve such a recycling society, and one of them is the use of solid waste fuel made from raw materials such as raw garbage and plastic waste.

  The present inventor has already proposed a technique relating to house cultivation using such solid waste fuel (see Patent Document 1).

JP 2012-5380 A

  According to the technology described in Patent Document 1, hot air or hot water is generated using heat generated by burning solid waste fuel, and the generated hot air or hot water is supplied to a facility horticulture house. The house can be heated.

  By the way, in house cultivation, in order to stably cultivate plants regardless of the season, it may be desirable to actively cool the house during hot weather such as summer. In such a case, the solid waste fuel can be a heat source for heating the inside of the house when it is cold, but cannot be used as it is for cooling.

  On the other hand, in house cultivation, electric power is required for lighting and other power in the house, and it has been required to supply this electric power at low cost.

  Therefore, the present invention has been made in view of the above points, and is a plant cultivation support system capable of performing stable cultivation of plants and power supply to cultivation facilities that are not involved in the cold weather of the climate at low cost, and It is intended to provide a method.

  In order to achieve the above-described object, the plant cultivation support system according to the present invention is a plant for supporting indoor cultivation by supplying power to a facility for indoor cultivation of the plant and heating or cooling the facility indoors. It is a cultivation support system, and includes a power supply device that supplies the power using heat generated by burning solid waste fuel, and a heating / cooling that heats or cools the indoors using geothermal heat. And a cooling device.

  Further, the plant cultivation support method according to the present invention is a plant cultivation support method for supporting the indoor cultivation by supplying power to a facility where the plant is cultivated indoors and heating or cooling the facility indoors. And a first step of supplying the power using heat generated by burning solid waste fuel, and a second step of heating or cooling the indoor using geothermal heat. It is characterized by.

  According to the present invention, waste solid fuel can be used for power supply to the facility, and geothermal heat can be used for heating or cooling the facility indoors. It is possible to perform stable cultivation of unrelated plants and supply of power to a cultivation facility at a low cost.

  Furthermore, in the plant cultivation support system of the present invention, the power supply device includes a heat generating means for burning the waste solid fuel to generate the heat, a circulation path for circulating a predetermined working fluid, and the heat generating means. Supplying the generated heat to the working fluid in the circulation path to convert the working fluid from liquid to steam, and generating electricity using the steam generated by the heat supply means. Power generation means for supplying the generated power to the facility. Similarly, in the plant cultivation support method of the present invention, the first step is generated in a 1-1 step in which the solid waste fuel is burned to generate the heat, and in the 1-1 step. The first and second steps of converting the working fluid from a liquid into a vapor by supplying the heat to a predetermined working fluid that circulates in the circulation path, and the vapor generated in the first and second steps. And a first to third step of performing power generation using the power and supplying power generated by the power generation to the facility.

  And according to such this invention, electric power supply can be performed simply and efficiently.

  Furthermore, in the plant cultivation support system of the present invention, the heating / cooling device includes: a compression unit that compresses a predetermined working fluid that circulates in a circulation path; an expansion unit that expands the working fluid; First heat exchange means for exchanging heat between the working fluid after compression and soil, and second heat exchange means for exchanging heat between the working fluid after compression or expansion and the indoors And may be provided. Similarly, in the plant cultivation support method of the present invention, the second step includes a second step 2-1 for compressing a predetermined working fluid circulating in the circulation path, and a second step 2-2 for expanding the working fluid. A step of exchanging heat between the working fluid after the expansion or compression and the soil, and a heat exchange between the working fluid after the compression or expansion and the indoor. And a 2-4th step to be performed.

  And according to such this invention, heating / cooling inside a facility can be performed at low cost while reducing the discharge amount of carbon dioxide.

  In the plant cultivation support system of the present invention, a part of the electric power generated by the power generation means may be used for the power of the heating / cooling device.

  And according to such a structure, waste solid fuel can be utilized for indoor heating / cooling indirectly via electric power supply.

  Furthermore, in the plant cultivation support system of the present invention, the waste solid fuel may be RPF (Refuse Paper & Plastic Fuel).

  And according to such a structure, since the fuel with the good calorific value and the cheap manufacturing cost can be used, indoor cultivation can be performed more stably and at low cost.

  Furthermore, in the plant cultivation support system of the present invention, the plant may include a bamboo shoot.

  And according to such a structure, the bamboo shoot which requires strict temperature management can be cultivated stably and inexpensively.

  ADVANTAGE OF THE INVENTION According to this invention, the stable cultivation of the plant which is not concerned with the cold weather of a climate, and the electric power supply to a cultivation facility can be performed at low cost.

Schematic block diagram showing an embodiment of a plant cultivation support system according to the present invention The flowchart which shows an electric power supply process in embodiment of the plant cultivation assistance method which concerns on this invention. The flowchart which shows a heating process in embodiment of a plant cultivation assistance method. The flowchart which shows a cooling process in embodiment of a plant cultivation assistance method. Schematic configuration diagram showing a variation of the plant cultivation support system

(Plant cultivation support system)
Hereinafter, an embodiment of a plant cultivation support system according to the present invention will be described with reference to FIG.

  FIG. 1 is a schematic configuration diagram showing a plant cultivation support system 1 in the present embodiment.

  As shown in FIG. 1, the plant cultivation support system 1 in this embodiment is comprised by the electric power supply apparatus 2, the heating / cooling apparatus 3, and the agricultural house 4 as a facility which grows a plant indoors. .

  The plant cultivation support system 1 configured in this way supplies power to the agricultural house 4 by the power supply device 2 and heats or cools the indoor of the agricultural house 4 by the heating / cooling device 3 to perform indoor cultivation. To come to help. At this time, the power supply device 2 supplies power using heat generated by burning the solid waste fuel. The heating / cooling device 3 is configured to perform indoor heating or cooling using geothermal heat.

  Hereinafter, a more specific configuration of the plant cultivation support system 1 will be described.

[Power supply device]
As shown in FIG. 1, the power supply device 2 includes a biomass boiler 21 as a heat generating unit and a heat exchange power generation device 22.

<Biomass boiler>
First, the biomass boiler 21 will be described in detail. As shown in FIG. 1, the biomass boiler 21 has a combustion chamber 212 in which the solid waste fuel 211 is burned. In the combustion chamber 212, as shown in FIG. 1, heat for exchanging heat between the indoor atmosphere of the combustion chamber 212 and the water 210 circulating in the heat supply circulation path (corresponding to the heat supply means) 213 is provided. An exchange unit 214 is provided.

  As shown in FIG. 1, a charging unit 215 for charging the solid waste fuel 211 into the combustion chamber 212 is disposed at the inlet of the combustion chamber 212.

  Further, as shown in FIG. 1, an ignition unit 216 that ignites the solid waste fuel 211 is disposed in the combustion chamber 212.

  Furthermore, a supply device 217 for supplying the solid waste fuel 211 to the input unit 215 is disposed outside the combustion chamber 212.

  The waste solid fuel 211 is preferably RPF. Further, the supply device 217 may be configured by a fuel silo, a belt conveyor, or the like in which the waste solid fuel 211 is accommodated. Although not shown, the biomass boiler 21 includes a discharge conveyor that discharges the combustion ash of the solid fuel 211, an air heater that preheats combustion air using exhaust heat, a dust collector that collects smoke, biomass A control device or the like for electrically controlling the operation of the boiler 21 may be provided. Furthermore, circulation means such as a pump for circulating the water 210 may be provided in the heat supply circulation path 213.

<Heat exchange power generator>
Next, the heat exchange power generation device 22 will be described in detail. As shown in FIG. 1, the heat exchange power generation device 22 has a power generation circuit 221 through which a predetermined power generation working fluid 220 is circulated.

  An evaporator 222 is disposed on the power generation circuit 221, and the evaporator 222 uses a part of the heat supply circuit 213 extended from the biomass boiler 21 side as a power generation circuit 221. It is comprised by arranging in.

  The heat supply circulation path 213 in the evaporator 222 evaporates the power generation working fluid 220 by supplying the heat of the hot water 210 in the circulation path 213 to the power generation working fluid 220 (heat exchange). (Vaporization) to convert liquid to vapor (gas).

  Further, as shown in FIG. 1, a turbine generator 223 as a power generation means is disposed on the power generation circuit 221. The turbine generator 223 rotates the turbine directly connected to the rotor of the generator 223 when the steam generated in the evaporator 222 passes through the turbine generator 223, thereby generating an armature (stator) of the generator 223. Or the rotor) is configured to induce an electromotive force to generate power.

  The power generated by the turbine generator 223 is transmitted to the agricultural house 4 through the transmission line 224.

  The power generation working fluid 220 may be a low boiling point liquid such as chlorofluorocarbon or ammonia. Further, an aggregator, a circulation pump, and the like may be further disposed on the power generation circuit 221. Further, the heat exchange power generator 22 may include a control device for electrically controlling the operation thereof.

[Heating / cooling device]
Further, as shown in FIG. 1, the heating / cooling device 3 has a heating / cooling circulation path 31 through which a predetermined heating / cooling working fluid 30 is circulated. As shown in FIG. 1, a compressor 32 as a compression unit is disposed on the heating / cooling circulation path 31, and the compressor 32 compresses the heating / cooling working fluid 30.・ It is designed to heat.

  Further, as shown in FIG. 1, an expansion valve 33 as an expansion means is disposed on the heating / cooling circulation path 31, and the expansion valve 33 supplies the heating / cooling working fluid 30. It expands and cools.

  Furthermore, as shown in FIG. 1, a first heat exchanger 34 as a first heat exchanging means is disposed on the heating / cooling circulation path 31. The first heat exchanger 34 is configured by disposing a heat exchange circuit 341 through which water 3411 is circulated between the heating / cooling circuit 31 and the soil 5. The first heat exchanger 34 performs heat exchange between the heating / cooling working fluid 30 after being expanded by the expansion valve 33 or compressed by the compressor 32 and the soil 5.

  Further, as shown in FIG. 1, a second heat exchanger 35 as a second heat exchange means is disposed on the heating / cooling circulation path 31. The second heat exchanger 35 is configured by disposing a pipe line 351 between the heating / cooling circulation path 31 and the interior of the agricultural house 4.

  The second heat exchanger 35 exchanges heat between the heating / cooling working fluid 30 after compression by the compressor 32 or after expansion by the expansion valve 33 and the indoors of the agricultural house 4 in the pipe 351. The operation is performed via a fluid 3511. The fluid 3511 in the pipe line 351 may be water circulating in the endless pipe line 351, or air that is sucked and discharged through an intake / exhaust port (not shown) at the end of the pipe line 351 with respect to the house interior. There may be.

  Moreover, the black arrow of FIG. 1 has shown the movement state of the heat | fever when heating the indoor of the agricultural house 4 using geothermal heat at the time of cold. On the other hand, the white arrows in FIG. 1 indicate the heat transfer state when the indoor heat of the agricultural house 4 is released to the soil 5 and the indoor is cooled in hot heat.

  The heating / cooling working fluid 30 may be a low boiling point liquid such as chlorofluorocarbon or ammonia. Further, a circulation means such as a pump for circulating the water 3411 may be disposed on the heat exchange circuit 341. Furthermore, when the fluid 3511 in the pipe line 351 is water, circulation means such as a pump may be arranged in the pipe line 351. On the other hand, when the fluid 3511 in the pipe line 351 is air, an air supply fan may be provided on the flow path or at the flow path end. Furthermore, the heating / cooling device 3 may include a control device for electrically controlling the operation thereof. Moreover, you may manage operation | movement of the heating / cooling apparatus 3 by remote operation using PC and communication.

[Agricultural house]
The agricultural house 4 is assembled, for example, by covering a framework such as an aluminum pipe with a protective coating material such as a vinyl chloride film or a polyethylene film, and a desired plant is cultivated indoors. As this plant, various plants such as vegetables, fruit trees, flowers and the like can be adopted, but in the present embodiment, tamogitake, which requires strict temperature control, can also be suitably employed.

  As shown in FIG. 1, a lighting load 41 and other power loads 41 in the house are disposed in the agricultural house 4, and power is supplied to the load 41 from the power supply device 2 side. It has become. The agricultural house 4 may be provided with a power storage device that stores power supplied from the power supply device 2 side.

  Further, as shown in FIG. 1, the indoors of the agricultural house 4 are heated or cooled by the heating / cooling device 3 via the fluid 3511 in the pipe 351. As shown in FIG. 1, the agricultural house 4 has a temperature sensor 42 that can be monitored on the heating / cooling device 3 side or on the manager (server) side that manages the heating / cooling device 3. It may be provided so that heating / cooling according to the detection result of the temperature sensor 42 is performed.

(Plant cultivation support method)
Next, an embodiment of a plant cultivation support method according to the present invention to which the above-described plant cultivation support system 1 is applied will be described with reference to FIGS.

[Power supply processing]
In the present embodiment, the power supply apparatus 2 performs power supply processing to the agricultural house 4 as shown in FIG.

  That is, first, the waste solid fuel 211 is burned by the biomass boiler 21 in Step 21 (ST21) of FIG. In step 21 (ST21), the solid waste fuel 211 is supplied to the input unit 215 at the inlet of the combustion chamber 212 by the supply device 217, and the supplied solid waste fuel 211 is supplied from the input unit 215 into the combustion chamber 212. This is executed by igniting the charged waste solid fuel 211 by the ignition unit 216.

  Next, in step 22 (ST22), the biomass boiler 21 and the heat exchange power generator 22 convert the power generation working fluid 220 from liquid to steam using the heat generated in step 21 (ST21). In the process of step 22 (ST22), the heat exchange unit 214 applies the combustion heat in the combustion chamber 212 to the water 210 in the heat supply circulation path 213 to convert it into hot water, and this hot water is converted into the circulation path. It is circulated through the evaporator 222 through 213, and the circulated hot water is exchanged with the power generating working fluid 220 in the evaporator 222 for heat exchange.

  Next, in step 23 (ST23), the heat exchange power generator 22 supplies the steam generated in step 22 (ST22) to the turbine generator 223 through the power generation circuit 221 to generate power by rotating the turbine. .

  Next, in step 24 (ST24), the turbine generator 223 supplies the power generated in step 23 (ST23) to the agricultural house 4 through the transmission line 224.

[Warming treatment]
Moreover, in this embodiment, the heating process of the agricultural house 4 as shown in FIG.

  That is, in step 31 (ST31) of FIG. 3, the compressor 32 compresses the warming / cooling working fluid 30 in the warming / cooling circulation path 31 that is steam by heat exchange with the soil 5. And heat.

  Next, in step 32 (ST32), heat exchange between the heating / cooling working fluid 30 compressed and heated in step 31 (ST31) and the indoors of the agricultural house 4 is performed by the second heat exchanger 35 in the pipeline. It goes through the fluid 3511 in 351 and heats the house indoors. The heating / cooling working fluid 30 after the heat exchange is condensed and liquefied.

  Next, in step 33 (ST33), the heating / cooling working fluid 30 after the heat exchange in step 32 (ST32) is expanded and cooled by the expansion valve 33.

  Next, in step 34 (ST34), the first heat exchanger 34 evaporates the heating / cooling working fluid 30 after expansion and cooling in step 33 (ST33) by heat exchange with the soil 5.

  If such a series of cycles is repeated, the heating in the house is continued.

[Cooling treatment]
Furthermore, in this embodiment, the heating / cooling device 3 performs the cooling process of the agricultural house 4 as shown in FIG. 4 as necessary.

  That is, in step 41 (ST41) of FIG. 4, the working fluid for heating / cooling in the heating / cooling circuit 31 that is converted into steam by heat exchange with the indoors of the agricultural house 4 by the compressor 32. 30 is compressed and heated.

  Next, in step 42 (ST42), the first heat exchanger 34 performs heat exchange between the heating / cooling working fluid 30 compressed and heated in step 41 (ST41) and the soil 5, and the heating / The heat of the cooling working fluid 30 is released to the soil 5. The heating / cooling working fluid 30 after the heat exchange is condensed and liquefied.

  Next, in step 43 (ST43), the heating / cooling working fluid 30 after the heat exchange in step 42 (ST42) is expanded and cooled by the expansion valve 33.

  Next, in step 44 (ST44), the second heat exchanger 35 evaporates the heating / cooling working fluid 30 after the expansion / cooling in step 43 (ST43) by heat exchange with the house interior. Cool indoors.

  If such a series of cycles is repeated, cooling of the house interior is continued.

(Modification)
Next, FIG. 5 shows a modification of the present embodiment.

  As shown in FIG. 5, in this modification, the power generated by the power supply device 2 is supplied (transmitted) not only to the agricultural house 4 but also to the heating / cooling device 3. The supplied power may be used for the power of the compressor 32 and the like.

  As described above, according to the present invention, the waste solid fuel 211 can be used for supplying power to the agricultural house 4 and geothermal heat can be used for heating or cooling the house. In addition, stable plant cultivation regardless of the cold weather and power supply to the cultivation facility can be performed efficiently and at low cost.

  In addition, this invention is not limited to embodiment mentioned above, You may change variously in the limit which does not impair the characteristic of this invention.

DESCRIPTION OF SYMBOLS 1 Plant cultivation support system 2 Electric power supply apparatus 211 Solid waste fuel 3 Heating / cooling apparatus 4 Agricultural house

Claims (9)

A plant cultivation support system for supporting the indoor cultivation by supplying power to the facility for indoor cultivation of the plant and heating or cooling the facility indoors,
A power supply device that performs the power supply using heat generated by burning solid waste fuel;
A plant cultivation support system, comprising: a heating / cooling device for heating or cooling the indoor using geothermal heat. The power supply device
Heating means for burning the waste solid fuel to generate the heat;
A circulation path through which a predetermined working fluid circulates;
Heat supply means for converting the working fluid from liquid to vapor by supplying heat generated by the heating means to the working fluid in the circulation path;
The plant cultivation support system according to claim 1, further comprising: a power generation unit that performs power generation using the steam generated by the heat supply unit and supplies the power generated by the power generation to the facility. The heating / cooling device comprises:
Compression means for compressing a predetermined working fluid circulating in the circulation path;
Expansion means for expanding the working fluid;
First heat exchanging means for exchanging heat between the working fluid and the soil after the expansion or compression;
The plant cultivation support system according to claim 2, further comprising second heat exchange means for exchanging heat between the working fluid after the compression or the expansion and the indoor. The plant cultivation support system according to claim 3, wherein a part of the electric power generated by the power generation means is used for power of the heating / cooling device. The plant solid support system according to any one of claims 1 to 4, wherein the solid waste fuel is RPF. The plant cultivation support system according to any one of claims 1 to 5, wherein the plant includes bamboo shoots. A plant cultivation support method for supporting the indoor cultivation by supplying power to the facility for indoor cultivation of the plant and heating or cooling the facility indoors,
A first step of supplying the power using heat generated by burning solid waste fuel;
And a second step of heating or cooling the indoor using geothermal heat. The first step includes
A 1-1 step of burning the waste solid fuel to generate the heat;
A 1-2 step of converting the working fluid from a liquid to a vapor by supplying the heat generated in the 1-1 step to a predetermined working fluid circulating in the circulation path;
The method according to claim 7, further comprising: a first step of performing a power generation using the steam generated in the first step 1-2 and supplying a power generated by the power generation to the facility. Plant cultivation support method. The second step includes
A step 2-1 for compressing a predetermined working fluid circulating in the circulation path;
A step 2-2 for expanding the working fluid;
A second to third step of performing heat exchange between the working fluid and the soil after the expansion or compression;
The plant cultivation support method according to claim 8, further comprising a second to fourth step of performing heat exchange between the working fluid after the compression or the expansion and the indoor.

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