Resource circulation-type cultivation system

Abstract

To provide a resource circulation-type cultivation system capable of reducing environmental burden in a stable and effective manner.SOLUTION: A cultivation system A includes a cultivation facility 1 for cultivating crops, a hot and cold water supply device 2 that circulates and supplies hot and cold water beneath a floor of the cultivation facility 1, a biomass power generation facility 3 that circulates and supplies hot and cold water to the hot and cold water supply device 2 and performs power generation, a recovery facility 5 configured to recover purified gas containing carbon dioxide from the biomass power generation facility 3 as recovered gas and to be capable of supplying the recovered gas to the cultivation facility 1, and a control unit C that controls these facilities, wherein the cultivation facility 1 includes, in a cultivation space 16, a carbon dioxide supply device that locally applies carbon dioxide to the crops by means of a carbon dioxide supply pipe, and the recovery facility 5 is configured such that, when a carbon dioxide concentration in the cultivation space 16 falls below a set value, the recovered gas is supplied to the carbon dioxide supply device.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a resource recycling cultivation system for cultivating plants and mushrooms. [Background technology]

[0002] In recent years, in order to realize a sustainable society, there has been an increasing emphasis on cultivation systems that reduce the environmental burden and realize ecological cultivation. Here, Patent Document 1 discloses a resource recycling cultivation system that is a unit-type cultivation facility made of a wooden building, in which a plurality of vents that connect the indoor cultivation space with the space under the floor are formed in the floor members of the wooden building, and air from the space under the floor is blown into the cultivation space by an air compression means (circulator), thereby enabling indoor ventilation and cooling, and also reducing power consumption and the environmental burden.

[0003] Furthermore, Patent Documents 2 and 3 disclose cultivation systems that can reduce carbon dioxide loss by capturing carbon dioxide emitted in fields or cultivation rooms and applying the captured carbon dioxide to cultivated plants at appropriate times. In this way, heat exchange and reuse of captured carbon dioxide make it possible to realize a cultivation system that reduces environmental impact. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2023-169494 [Patent Document 2] Patent Publication No. 2021-182888 [Patent Document 3] Japanese Patent Application Publication No. 2024-35531 Summary of the Invention [Problem to be solved by the invention]

[0005] However, while the conventional resource recycling cultivation systems that use heat exchange as described in Patent Document 1 and reuse carbon dioxide as described in Patent Documents 2 and 3 can reduce environmental impact, their effectiveness is unstable. For example, with the technology described in Patent Document 1, the effectiveness of heating and cooling through heat exchange is easily affected by air temperature, and with the technologies described in Patent Documents 2 and 3, there are problems such as unevenness in the amount and concentration of carbon dioxide that can be recovered. Therefore, there has been a demand for a cultivation system that can reduce environmental impact more stably and effectively.

[0006] Therefore, an object of the present invention is to provide a resource recycling cultivation system that can solve these problems and reduce environmental load more stably and effectively than conventional systems. [Means for solving the problem]

[0007] In order to achieve the above object, the first invention provides: A cultivation system comprising: a cultivation facility for cultivating crops; a hot and cold water supply device attached to the cultivation facility and circulating hot and cold water under the floor of the cultivation facility; a biomass power generation facility that circulates hot and cold water to the hot and cold water supply device and generates power using biomass as a raw material; a recovery facility that recovers purified gas containing carbon dioxide from the biomass power generation facility as a recovered gas and is configured to be able to supply the recovered gas to the cultivation facility; and a control unit that controls these facilities, The cultivation facility includes a carbon dioxide supply device that locally applies carbon dioxide to the cultivated object through a carbon dioxide supply pipe within a cultivation space where the cultivated object is cultivated; The present invention provides a cultivation system characterized in that the recovery equipment is configured to supply the recovered gas to the carbon dioxide supply device and apply the recovered gas to the cultivated plants when the carbon dioxide concentration in the cultivation space falls below a set value.

[0008] According to the first aspect of the present invention, a resource recycling cultivation system can be provided that can reduce environmental load more stably and effectively than conventional systems by recovering purified gas containing carbon dioxide from a biomass power generation facility as recovered gas and locally applying the recovered gas to plants in the cultivation facility using a carbon dioxide supply device that receives the recovered gas.In particular, since the purified gas (recovered gas) can be supplied directly to the plants without being concentrated, sufficient carbon dioxide application effects can be obtained, enabling ecological cultivation.

[0009] The second invention has the same configuration as the first invention, but also: the recovery facility includes a buffer tank that temporarily stores the recovered gas recovered from the biomass power generation facility, and a storage tank that receives the recovered gas from the buffer tank and stores the recovered gas, and is configured to supply the recovered gas stored in the storage tank to the carbon dioxide supply device; The control unit acquires information about the measured carbon dioxide concentration from a recovered gas concentration sensor that measures the concentration of the recovered gas in the buffer tank, and controls the recovery gas to be supplied from the buffer tank to the storage tank when the two-stage carbon concentration of the recovered gas in the buffer tank is equal to or higher than a specified concentration.

[0010] In addition to the configuration of the first invention, the second invention can effectively prevent recovered gas containing less than the specified carbon dioxide concentration from being supplied to the storage tank, thereby stabilizing the carbon dioxide concentration of the recovered gas supplied to the cultivation equipment.

[0011] The third invention, in addition to the configuration of the second invention, The biomass power generation facility includes a purification device that purifies exhaust gas generated from a gas engine to generate the purified gas, and the purification device includes NOx removal means that removes NOx contained in the exhaust gas, The control unit is configured to acquire information regarding the measured NOx concentration from the recovered gas concentration sensor, and when the NOx concentration of the recovered gas in the buffer tank exceeds a predetermined upper limit value, to control a purge valve provided in the buffer tank to open for a predetermined time period, thereby discharging the recovered gas in the buffer tank.

[0012] In addition to the configuration of the second invention, the third invention prevents recovered gas that is not sufficiently purified (not suitable for application to cultivated plants) from being supplied to the cultivation equipment (carbon dioxide supply device) and applied to the cultivated plants. [Effects of the Invention]

[0013] According to the present invention, a cultivation facility can be provided that can regulate humidity more stably while reducing the environmental load. [Brief explanation of the drawings]

[0014] [Figure 1] FIG. 1 is a schematic diagram showing the overall configuration of a cultivation system including a cultivation facility according to an embodiment of the present invention. [Figure 2] FIG. 2 is a schematic perspective view showing the cultivation facility of FIG. 1 as viewed from above. [Figure 3] FIG. 3 is a perspective view showing the framework of the cultivation facility of FIG. [Figure 4] 4(a) is a perspective view showing the ceiling shading device of FIG. 1 in a light-shielding state, and FIG. 4(b) is a perspective view showing the ceiling shading device of FIG. 1 in a light-transmitting state. [Figure 5] Figure 5(a) is a schematic side view of the essential parts showing the state in which the ventilation holes in the floor section of Figure 1 are open, Figure 5(b) is a schematic side view of the essential parts showing the state in which the ventilation holes in the floor section of Figure 1 are closed, and Figure 5(c) is a schematic front view of the essential parts of the floor section. [Figure 6] FIG. 6 is a perspective view of the cultivation shelf device of FIG. [Figure 7] FIG. 7 is a partially exploded perspective view of the periphery of the dehumidifying / humidifying cooling / heating mechanism. [Figure 8]FIG. 8 is a schematic diagram showing the internal configuration of the hot and cold water supply device. [Figure 9] FIG. 9 is a control block diagram of the control device of FIG. [Figure 10] FIG. 10 is a diagram schematically illustrating one embodiment of a biomass power generation facility. [Figure 11] FIG. 11 is a schematic diagram showing an example of the configuration of the exhaust gas purification device of FIG. [Figure 12] FIG. 12 is a diagram showing a schematic diagram of an embodiment of the recovery facility. [Figure 13] FIG. 13 is a flowchart showing the flow of the carbon dioxide recovery process performed by the control unit. [Figure 14] FIG. 14 is a flowchart showing the flow of the carbon dioxide supply process performed by the control unit. DETAILED DESCRIPTION OF THE INVENTION

[0015] <1. Overall configuration of the cultivation system> FIG. 1 is a schematic diagram showing the overall configuration of a cultivation system A according to an embodiment of the present invention. As shown in FIG. 1, the cultivation system A includes a cultivation facility 1 for cultivating a crop N, a hot / cold water supply device 2 attached to the cultivation facility 1 and circulating and supplying hot / cold water (which refers to hot water or cold water, the same applies below), a biomass power generation facility 3 that circulates and supplies hot water to the hot / cold water supply device 2 and generates electricity using biomass as a raw material, a recovery facility 5 that recovers purified gas 3j from the biomass power generation facility 3, and a control unit C that controls these facilities. Each component will be described in order below. For ease of explanation, the left side of FIG. 1 will be referred to as the front and the right side as the rear.

[0016] <2. Overview of cultivation facilities> FIG. 2 is a schematic perspective view showing the cultivation facility 1 of FIG. 1 looking up, and FIG. 3 is a perspective view showing the framework of the cultivation facility 1. In the following description, the left and right sides of the cultivation facility 1 are defined as indicated by arrows in FIG. 3. The cultivation facility 1 in this embodiment cultivates plants (e.g., strawberries, blueberries, cedar seedlings, etc.) or mushrooms (e.g., shiitake mushrooms, king oyster mushrooms, etc.) as the cultivated object N. In other words, the cultivated object N refers to the plant or mushroom to be cultivated. Note that the plant includes algae.

[0017] As shown in Figures 2 and 3, the cultivation facility 1 comprises a wooden building 10, which comprises a main body 11 framed in a roughly rectangular parallelepiped shape using wood, and a roof 12 framed in wood on top of the main body 11. The main body 11 has foundations 11a at its four corners that support the weight of the cultivation facility 1, and supports 11b erected on each of the four corner foundations 11a. A floor 13 that forms the floor surface of the cultivation facility 1 is provided below the supports 11b, and a ceiling 11c is formed above it using beams framed in a rectangular frame. Note that wooden construction is hygroscopic, which can further stabilize indoor humidity.

[0018] The roof 12 has a pair of roof beams 12a, 12a erected at both ends of the rear of the ceiling 11c, a connecting beam 12b connecting the upper ends of the pair of roof beams 12a, 12a, and a pair of rafters 12c attached diagonally from the front end of the ceiling 11c to the connecting beam 12b. The roof 12, except for the back surface, is covered with translucent glass, vinyl, or the like.

[0019] A wall shading device 14 is provided on the front side (front side) of the main body 11, which functions to block sunlight entering the interior from the front of the cultivation facility 1 (i.e., the main body 11) and is capable of adjusting the amount of shading. This wall shading device 14 is a known device that adjusts the angle by synchronously rotating multiple louvers (vanes) regularly arranged in the vertical direction using a motor (not shown), thereby adjusting the amount of shading. For its configuration, see, for example, Japanese Patent Application Laid-Open Publication No. 2019-198268. Each of the multiple louvers (vanes) is equipped with a solar panel, and power generated by the wall shading device 14, along with power generated by the ceiling shading device 15 (described later), is configured to charge a battery (not shown). Although not shown, the left, right, and back sides of the main body 11 are walled with wooden boards, and doors are provided at appropriate locations to allow access to the interior and exterior.

[0020] Although not shown in FIGS. 1 and 3 , the wall shading device 14 is equipped with a motor-operated heat-insulating shading curtain, which can cover the front side (front side) of the main body 11 and the wall shading device 14. The structure of this motor-operated heat-insulating shading curtain will not be described in detail, but see, for example, Japanese Patent Application Laid-Open No. 2015-142545. The opening and closing (amount) of the heat-insulating shading curtain can be controlled by a cultivation equipment control device C1, which will be described later. The cultivation equipment 1 according to the embodiment of the present invention can also adjust the breathability and shading amount of the front side (front side) of the main body 11 by controlling the opening and closing (amount) of this heat-insulating shading curtain. When closed, the heat-insulating shading curtain covers the entire plurality of louvers of the wall shading device 14, and when rolled up, it can be opened to expose the entire plurality of louvers.

[0021] The ceiling portion 11c is provided with a ceiling shading device 15 that functions to block sunlight entering the interior from the top surface of the cultivation facility 1 (in other words, the main body portion 11) and generate electricity, and further, is capable of adjusting the amount of shading. This ceiling shading device 15 will be described later.

[0022] Within the main body 11 (indoors), a cultivation space 16 for cultivating agricultural products is formed above the floor 13, and an underfloor space 17 is formed below the floor 13. In the cultivation space 16, a cultivation shelf device 18 for arranging cultivated products is disposed on the floor 13, and above this cultivation shelf device 18, a sprinkler device 19 for sprinkling water toward the cultivation shelf device 18 (in other words, the cultivated products N) is disposed in the hollow space near the ceiling 11c, for example, fixed to a pipe or the like.

[0023] The sprinkler device 19 generates mist-like water (mist) from multiple shower nozzles and sprays it onto the cultivation space 16. The sprinkler device 19 is controlled by a cultivation equipment control device C1 (described later). When the ceiling fan 12f is driven, water is supplied to the plants N on the cultivation shelf devices 18 by sprinkling water, and excess water (water supplied in excess to the cultivation shelf devices 18, hereinafter referred to as excess water) is supplied from the floor 13 to a dehumidifying / humidifying cooling / heating mechanism Y disposed in the underfloor space 17. More specifically, the excess water on the floor 13 (on the floor surface) drips from the ventilation holes 13n and flows down from a drain outlet (not shown) provided at an appropriate location on the floor 13 to be supplied to the dehumidifying / humidifying / heating mechanism Y in the underfloor space 17. The configuration of the dehumidifying / humidifying / heating mechanism Y will be described later.

[0024] Also, disposed within the cultivation space 16 are a cultivation equipment control device C1 that controls various aspects of cultivation of the cultivated product N, and a cultivation environment measurement sensor S that detects measurements related to the cultivation environment of the cultivated product N within the cultivation space 16. Information about the detected values ​​measured by the cultivation environment measurement sensor S is transmitted to the cultivation equipment control device C1 via wireless communication or other means and is used to control the cultivation equipment control device C1. Details of the cultivation equipment control device C1 will be described later, but the cultivation equipment control device C1 does not necessarily have to be disposed within the cultivation space 16. Furthermore, the cultivation environment measurement sensor S has multiple sensors for different measurement items, and at least includes a humidity sensor S1 that measures humidity within the cultivation space 16, a temperature sensor S2 that measures temperature, a carbon dioxide concentration sensor S3 that measures carbon dioxide concentration, and a solar radiation sensor S4 that measures solar radiation (see FIG. 9).

[0025] 1 to 3, a plurality of ceiling fans 12f are provided on the rear surface of the roof portion 12. These ceiling fans 12f are driven and controlled by a cultivation equipment control device C1, which will be described later. When the ceiling fans 12f are driven, an air current is generated that passes from the ceiling portion 11c to the rear surface of the roof portion 12, thereby ventilating the cultivation space 16 of the cultivation equipment 1, and thereby making it possible to control the temperature and humidity.

[0026] In this embodiment, as an example, the floor 13 is formed with a size of approximately 2 m x 2 m, the support columns 11 b are approximately 4 m high, and the roof beams 12 a are approximately 1.5 m high. Therefore, the back of the roof 12 is an area approximately 2 m wide x 1.5 m high, and a total of 15 ceiling fans 12 f are arranged in this area, five in the width direction and three in the height direction. This configuration with multiple ceiling fans 12 f allows for stable generation of updrafts and further rapid ventilation. If more rapid ventilation is desired, multiple fans similar to the multiple ceiling fans 12 f can be installed on the front side (front side) of the main body 11 instead of the wall shading device 14, and can be configured to be driven and controlled by the cultivation equipment control device C1 described below.

[0027] <3. Configuration of ceiling shading device> 4(a) is a perspective view showing the ceiling shading device 15 of FIG. 1 in a light-shielding state, and FIG. 4(b) is a perspective view showing the ceiling shading device 15 of FIG. 1 in a light-transmitting state. In the ceiling shading device 15, rectangular plate-shaped solar panels p are arranged side by side at a predetermined interval on a pair of cables R, R. A winding motor m that winds up the pair of cables R, R is disposed on one end of the pair of cables R, R, and a pulley member (iron-frame pulley) k is provided on the other end, and the pair of cables R, R are wound in a loop shape (ring shape) and rotatably stretched, and when the winding motor m rotates forward or backward, the solar panels p on the pair of cables R, R move forward or backward in the horizontal direction depending on the rotation direction. Note that, for example, the pulley member (iron-frame pulley) k is fixed to the front support 11b and the winding motor m is fixed to the rear support 11b, but the installation method is not limited to this. As shown in the figure, the ceiling shading device 15 of this embodiment has a three-stage configuration (solar panels p1 to p3, pulley members k1 to k3, and winding motors m1 to m3), but is not limited to this and may have, for example, four or more stages. Also, a winding motor m may be provided on the pulley member (iron frame pulley) k side.

[0028] The winding motors m (m1 to m3) are each driven and controlled by the cultivation equipment control device C1 (described later). This allows the ceiling shading device 15 to switch between a shading state (maximum shading amount and power generation amount) shown in FIG. 4(a) and a light-transmitting state (minimum shading amount and power generation amount) shown in FIG. 4(b) by horizontally moving and positioning the solar panels p1 to p3. A semi-shading state, which is intermediate between the shading state and the light-transmitting state, is also possible. The power generated by each solar panel p of the ceiling shading device 15 is charged in a battery (not shown) and supplied to each device of the cultivation equipment 1 (e.g., the cultivation equipment control device C1 and the winding motor m of the ceiling shading device 15 itself). The battery output may be turned on and off by the control of the cultivation equipment control device C1 (described later). The battery power may be switched between being used by supplying it to the devices of the cultivation equipment 1 and being sold. This switching may be performed remotely by operating an information terminal Ct (described later).

[0029] <4. Floor structure> Figure 5(a) is a schematic side view of the essential parts showing the state in which the ventilation holes in the floor section of Figure 1 are open, Figure 5(b) is a schematic side view of the essential parts showing the state in which the ventilation holes in the floor section of Figure 1 are closed, and Figure 5(c) is a schematic front view of the essential parts of the floor section. The upper surface of the floor section 13 is formed by a number of floorboards 13a arranged at regular intervals in a tray-like manner, and ventilation holes 13n are formed in the gaps formed between the floorboards 13a. The floorboards 13a are wooden boards that are rectangular in plan view, and a pair of legs 13c, 13c are fixed to the back surface of the floorboard 13a, and are arranged perpendicular to the length of the floorboard 13a.

[0030] Next, we will explain the floor surface opening / closing mechanism Q that opens and closes (opens or closes) this vent hole 13n. The floor surface opening / closing mechanism Q is configured so that a support plate 13d is provided on the underside of the legs 13c, 13c along their length, and a roller 13r provided on the support plate 13d slidably supports a shutter plate 13b (closing plate). Note that, as shown in FIG. 5(c), for example, a more detailed configuration of the roller 13r may be configured so that the pivot shaft of a resin bearing roller is attached to the side surface of the legs 13c, 13c to support the shutter plate 13b, or a caster wheel may be attached to the underside of the shutter plate 13b to enable it to slide on the support plate 13d. The shutter plates 13b are arranged in a lattice-like pattern at regular intervals to match the spacing between the vent holes 13n. A pair of connecting legs 13e, 13e are fixed to the backside of the shutter plates 13b, and the shutter plates 13b are connected to each other by this. A rack that engages with a gear is provided at an appropriate location on the underside of the shutter plate 13b. A so-called rack-and-pinion mechanism is used to open and close (open or close) the vent holes 13n by driving a vent hole opening / closing motor Q1, which rotates a pinion gear disposed below the shutter plate 13b, in forward and reverse directions. In other words, in the closed state (closed state), the shutter plates 13b close each vent hole 13n, as shown in FIG. 5(b). In the open state (opened state), the vertical overlap between the vent holes 13n and the shutter plates 13b is released, ensuring ventilation of the floor 13. The vent opening / closing motor Q1 is disposed outside the surplus water storage section y1, which will be described later, and its drive is controlled by a cultivation equipment control device C1, which will be described later. The floor surface opening / closing mechanism Q that opens and closes the vent 13n of the floor section 13 is not limited to the above configuration. For example, see Japanese Patent Application Laid-Open No. 2023-169494.

[0031] <5. Configuration of the cultivation shelf device> FIG. 6 is a perspective view of the cultivation shelf device 18 of FIG. As shown in FIG. 6, the basic configuration of the cultivation shelf device 18 is a shelf frame T that forms the device's framework. Multiple planter containers u1, u1, u1 for containing cultivated objects N are arranged in multiple vertical tiers, with planter shelves u2, u2, u2 arranged below the multiple planter containers u1. Each planter container u1 of the cultivation shelf device 18 is connected to a water supply pipe W2 equipped with a solenoid valve (not shown), allowing water to be supplied from the irrigation device W. The irrigation device W includes a water storage tank and a water supply pump (not shown), allowing water to be circulated through the water supply pipe W2. Carbon dioxide can be locally applied to each planter container u1 from the carbon dioxide supply pipe V2 by a carbon dioxide supply device V. When the cultivated object N is a mushroom, the planter container u1 may be a bag or bottle containing a culture medium, or even a log for cultivation.

[0032] The shelf frame T is formed by assembling rod-shaped frame materials into a cubic frame shape, and includes four support frames t1 that form the four corners of the cultivation shelf device 18, an upper rectangular frame frame t2 provided at the upper end of the support frame t1, and a lower frame frame t3 provided at the lower end. The lower U-shaped frame t3 is a frame material that is U-shaped in plan view, and each of its four corners is fixed to the four support frames t1 by bolt fastening using bolts (not shown).

[0033] In addition, on the right side surface of the shelf frame T (specifically, the rectangular frame portion formed by the two right support frames t1, t1, the right end of the upper rectangular frame t2, and the right end of the lower U-shaped frame t3) and on the left side surface (specifically, the rectangular frame portion formed by the two left support frames t1, t1, the left end of the upper rectangular frame t2, and the left end of the lower U-shaped frame t3), three pairs of left and right fixing frames t4 are provided at the upper, middle, and lower positions, with the upper and lower heights differing at predetermined intervals.

[0034] The fixing frame t4 is formed of a frame material with a roughly L-shaped cross section, and is configured to support the planter shelf board u2 by sandwiching it on both left and right sides between the pair of fixing frames t4, t4. The planter shelf board u2 is rectangular, and the planter container u1 is placed on its upper surface.

[0035] To avoid overlapping in the vertical direction, the planter shelves u2 and planter containers u1 are arranged in the front of the lower fixing frame t4, the middle of the middle, and the rear of the upper fixing frame t4, respectively. Because the planter containers u1 are arranged with their positions staggered in the front-to-back direction (in other words, in the longitudinal direction of the fixing frame t4), contact with each planter container u1 is avoided even when the cultivated plant N grows upward. Furthermore, light incident on the cultivated plant N is not blocked by the planter container u1, which promotes good growth.

[0036] The water pipe W2 comprises a main pipe extending vertically and a branch pipe branching off from the main pipe, which is connected to the upper and lower planter containers u1, u1, u1, respectively. Water supplied to the upper planter container u1 circulates to the middle and lower planter containers u1 and is then returned from the lower planter container u1 to the water storage tank of the irrigation device W. When the cultivated object N is a mushroom, the irrigation device W may be configured to stop circulating water, or the irrigation device W itself may be omitted.

[0037] Furthermore, on the front portion of the shelf frame T (specifically, the rectangular frame portion formed by the two front support frames t1, t1, the front end of the upper rectangular frame t2, and the front end of the lower U-shaped frame t3), three lighting lamps L (L1, L2, L3) are provided at the upper, middle, and lower positions at predetermined intervals and at different heights to illuminate the cultivated plants N. These lighting lamps L are tubular LED lights that receive power through wiring (not shown) installed inside the shelf frame T, and the lighting of the lighting lamps L (L1, L2, L3) on the upper, middle, and lower positions is controlled independently by the cultivation equipment control device C1. As a result, the upper lighting lamp L1 can irradiate (in other words, provide supplementary light to) the upper planter container u1, the middle lighting lamp L2 can irradiate (in other words, provide supplementary light to) the middle planter container u1, and the lower lighting lamp L3 can irradiate (in other words, provide supplementary light to) the lower planter container u1. As a result, by controlling the on / off of the plant lighting lamps L using the cultivation equipment control device C1, it is possible to finely adjust the illuminance for each plant N housed in each planter container u1. The outlet t4 provided at the bottom of the shelf frame T can be connected to a commercial power source or a battery to supply power to the lighting lamps L. In addition, casters t6 are provided at the bottom of the shelf frame T, making it easy to move and adjust the position of the cultivation shelf device 18 and the plant N.

[0038] The carbon dioxide supplying device V receives carbon dioxide for application to the cultivated plants N from a carbon dioxide supply source (e.g., a carbon dioxide gas cylinder) (not shown) and sends the carbon dioxide (carbon dioxide gas) to the supply pipe V3 by driving an air pump. Furthermore, carbon dioxide supply pipes V2, V2, V2, which are gas supply pipes (porous pipes), are arranged along the longitudinal direction near the planter containers u1, u1, u1 (in the illustrated example, approximately on the top surfaces of the planter containers u1). Each carbon dioxide supply pipe V2 is connected by a connecting pipe V4. This allows carbon dioxide supplied from the gas supply pipe V3 to be ejected through micropores in the peripheral wall of the carbon dioxide supply pipe V2 and applied locally to the vicinity of the cultivated plants N, thereby enabling efficient application with a small amount of carbon dioxide. The air pump of the carbon dioxide supplying device V is driven and controlled by the cultivation equipment control device C1 (described later). When the cultivated product N is algae, the planter container u1 is a culture tank, and the carbon dioxide supply pipe V2 is preferably disposed inside the culture tank (underwater).

[0039] <6. Composition of the dehumidifying / heating / cooling mechanism> FIG. 7 is a partially exploded perspective view of the periphery of the dehumidifying / humidifying cooling / heating mechanism Y. FIG. As shown in FIG. 7 , the dehumidifying / humidifying cooling / heating mechanism Y includes a box-shaped surplus water storage section y1 with an open top. Hot / cold piping G (g1) extending from the hot / cold water supply device 2 is installed within this surplus water storage section y1 (within the frame of the side wall). The hot / cold piping G is arranged to connect the dehumidifying / humidifying cooling / heating mechanism Y to the biomass power generation facility 3 via the hot / cold water supply device 2. Water, which serves as a heat exchange medium, is circulated through the hot / cold piping G, enabling heat exchange between these facilities. The heat exchange medium is not necessarily limited to water. The arrows in the figure indicate the direction in which the heat exchange medium circulates (as in FIG. 8 ). The hot / cold piping G is composed of multiple connected pipes. However, the piping within the surplus water storage section y1, the cold water supply device 2, and the biomass power generation facility 3 is preferably made of a highly thermally conductive material, such as copper, stainless steel, or aluminum, to enhance heat exchange efficiency. On the other hand, the outdoor piping may be made of impact-resistant hard polyvinyl chloride pipes or the like, and may be laid underground, in order to reduce the loss of thermal energy.

[0040] Furthermore, the hot / cold piping G disposed within the surplus water storage section y1 is provided with a serpentine section g1 formed to meander in a predetermined pattern, which is configured to enhance the efficiency of heat exchange in the underfloor space 17. Above this serpentine section g1, multiple underfloor fans 13f are provided at predetermined intervals. When these underfloor fans 13f are driven, they blow air upward, thereby generating an upward airflow from the ventilation openings 13n in the floor section 13, thereby ventilating the cultivation space 16 of the cultivation equipment 1. The multiple underfloor fans 13f are waterproof, and are driven and controlled by a cultivation equipment control device C1, which will be described later.

[0041] A water level sensor S5 is disposed in the surplus water storage section y1, which detects the level of the surplus water stored in the surplus water storage section y1. As a result, it is possible to detect whether or not there is surplus water. The detection information from the water level sensor S5 is transmitted to the cultivation equipment control device C1, which will be described later. The top surface of the surplus water storage section y1 does not necessarily have to be completely open, and may be covered with, for example, a grating (a lattice-shaped cover), or may be partially blocked.

[0042] The dehumidifying / humidifying cooling / heating mechanism Y configured as described above heats the underfloor space 17 when hot water is circulated and supplied from the hot / cold water supply device 2 to the hot / cold piping G (serpentine section g1), thereby heating the cultivation space 16. Also, when cold water is circulated and supplied from the hot / cold water supply device 2 to the hot / cold piping G (serpentine section g1), the underfloor space 17 is cooled, thereby cooling the cultivation space 16. Furthermore, by driving the underfloor fan 13f with the vent of the floor section 13 open, an ascending air current is generated in the cultivation space 16, thereby enabling dehumidification. At this time, it is preferable that cold water is circulated and supplied from the hot / cold water supply device 2 to the hot / cold piping G (serpentine section g1). Furthermore, with the ventilation opening 13n of the floor section 13 open, hot water is circulated and supplied from the hot / cold water supply device 2 to the hot / cold piping G (serpentine section g1). This heats the excess water in the excess water storage section y1, promoting evaporation. The generated steam is then sent through the ventilation opening 13n into the cultivation space 16, thereby humidifying the cultivation space 16. At this time, it is preferable to stop the underfloor fan 13f or generate a gentle breeze. This is to prevent the generated steam from being blown upward by an ascending air current above the cultivation shelf device 18 and being discharged to the outside. Note that "hot water" refers to water that is warmer than room temperature, and in this embodiment, this is water at a temperature between 50°C and 60°C. Furthermore, "cold water" refers to water that has been cooled to a temperature below room temperature, and in this embodiment, this is water at a temperature between 10°C and 20°C. Thus, by using excess water generated by the sprinkler device 19 for humidification, it is possible to more stably adjust humidity while reducing environmental impact.

[0043] <7. Configuration of hot and cold water supply device> FIG. 8 is a schematic diagram showing the internal configuration of the hot and cold water supply device 2. As shown in FIG. As shown in Figure 8, inside the hot and cold water supply device 2, hot and cold piping G is provided, which includes a return pipe g2 through which the heat exchange medium returns from the cultivation equipment 1 and a forward pipe g3 through which the heat exchange medium travels toward the cultivation equipment 1, and hot and cold water is delivered and supplied to the cultivation equipment 1 by driving a first liquid delivery pump PN1. The downstream side of the return pipe g2 passes through the biomass power generation equipment 3 and is connected to the upstream side of the forward pipe g3, and the downstream side of the forward pipe g3 passes through the cultivation equipment 1 and is connected to the upstream side of the return pipe g2 (see Figure 7).

[0044] The first and second switching valves B1 and B2 are provided on the supply pipe g3 upstream of the first liquid feed pump PN1. These first and second switching valves B1 and B2 are two-position, three-port solenoid valves connected to a branch pipe g4 that passes through the cooling tank 2T. In the first position, each of them blocks the port connected to the branch pipe g4, preventing the heat exchange medium from passing through the cooling tank 2T. In other words, in the illustrated example, ports bp1, bp2, bp4, and bp5 are connected, and ports bp3 and bp6 are blocked. In the second position, each of them blocks the port that connects the first and second switching valves B1 and B2 on the supply pipe g3. In other words, in the illustrated example, ports bp1, bp3, bp5, and bp6 are connected, and ports bp2 and bp4 are blocked. This allows the heat exchange medium circulated and supplied from the biomass power generation facility 3 to be circulated and supplied to the cultivation facility 1 via the first switching valve B1, the branch pipe g4, and the second switching valve B2.

[0045] Here, the cooling tank 2T is a cooling tank that contains cooling water. The branch pipe g4 is formed to extend spirally within the cooling tank 2T, thereby allowing the heat exchange medium that passes through the cooling tank 2T to be sufficiently cooled. Furthermore, the cooling water within the cooling tank 2T can be supplied as sprinkler water to the sprinkler device 19 via the sprinkler supply pipe g5 by driving the second liquid feed pump PN2. In this way, using the water within the cooling tank 2T of the hot and cold water supply device 2 for the sprinkler device 19 can more effectively reduce environmental impact.

[0046] The hot and cold water supply device 2 configured as described above can supply hot water as a heat exchange medium circulated and supplied from the biomass power generation facility 3 to the cultivation facility 1 by passing the hot water directly through the supply pipe g3 when the first selector valve B1 and the second selector valve B2 are in the first position. On the other hand, when the first selector valve B1 and the second selector valve B2 are in the second position, the heat exchange medium is cooled by passing the hot water through the supply pipe g3 to the cooling tank 2T, thereby supplying cold water to the cultivation facility 1. The driving of the first liquid feed pump PN1 and the second liquid feed pump PN2 and the switching of the positions of the first selector valve B1 and the second selector valve B2 are controlled by a cultivation facility control device C1, which will be described later.

[0047] <8. Control Unit Configuration> FIG. 9 is a control block diagram of the control unit C in FIG. Next, the configuration of the control unit C will be described, focusing on the cultivation equipment control device C1. The cultivation equipment control device C1 is an electronic control mechanism (so-called control panel) that controls the cultivation equipment 1 and has a CPU, a storage device (e.g., ROM, ROM, SSD, etc.), stored programs (none of which are shown), etc. As shown in Fig. 9, a humidity sensor S1, a temperature sensor S2, a carbon dioxide concentration sensor S3, a solar radiation sensor S4, and a water level sensor S5 are connected to the input side of the cultivation equipment control device C1, and detection information can be obtained from these sensors.

[0048] In addition, the output side of the cultivation equipment control device C1 is connected to a ceiling fan f12, an underfloor fan 13f, a wall shading device 14, a ceiling shading device 15, a floor opening and closing mechanism Q, a cultivation shelf device 18, a carbon dioxide supply device V, a watering device 19, and a hot and cold water circulation device 2, and is configured to be able to send control signals to these devices to control their operation.

[0049] Furthermore, the cultivation equipment control device C1, the biomass power generation equipment control device C2 (control panel of the biomass power generation equipment 3) that controls the biomass power generation equipment 3, and the recovery equipment control device C3 (control panel of the recovery equipment 5) that controls the recovery equipment 5 are connected via a network NW by a communication unit (not shown) that enables communication with the outside world, and are configured to be able to send and receive various information. This allows the control units C, i.e., the cultivation equipment control device C1, the biomass power generation equipment control device C2, and the recovery equipment control device C3, to share detection, detection, and measurement information from various sensors, as well as information input by users through predetermined operations, and by mutually exchanging information necessary for various processes in the cultivation system A, it is possible to link the operations of the cultivation equipment 1, the biomass power generation equipment 3, and the recovery equipment 5 (in other words, to link the operations of the various mechanisms and devices arranged in each facility). In addition, the various information acquired by the cultivation equipment control device C1, biomass power generation equipment control device C2, and recovery equipment control device C3 may be recorded on an external server, and the cultivation equipment control device C1, biomass power generation equipment control device C2, and recovery equipment control device C3 may each be configured to acquire information necessary for various processes of the cultivation system A from the external server.

[0050] The cultivation equipment control device C1, the biomass power generation equipment control device C2, and the recovery equipment control device C3 are each capable of sending and receiving information to and from an information terminal Ct via a network NW. This information terminal Ct is an information processing device with input / output functions, such as a personal computer, tablet, or smartphone. Using the information terminal Ct, an administrator (user) can obtain various data (e.g., the operating status of the cultivation environment measurement sensor S and various devices, the amount of power generated by the solar panels, the remaining battery charge, etc.) from the remote cultivation equipment control device C1, the biomass power generation equipment control device C2, and the recovery equipment control device C3, and check the data on the display screen of the information terminal Ct. Furthermore, by operating the operation unit of the information terminal Ct, the administrator can input setting information and send instructions and commands related to the operation and stop of various devices to each of the devices.

[0051] <9. Configuration of biomass power generation facility> FIG. 10 is a diagram schematically illustrating one embodiment of a biomass power generation facility 3. As shown in FIG. As shown in FIG. 10 , the biomass power generation facility 3 of this embodiment includes, in order from the upstream side of the processing process, a hopper 31, a conveyor 32, a gasification furnace 33, a product gas heat exchanger 34, a product gas cooler 35, a dust collector 36, a filter device 37, a gas engine 38, an exhaust gas heat exchanger 39, an exhaust gas purification device 40, and an exhaust tower 41. The biomass power generation facility 3 of this embodiment is configured to generate combustible gas (product gas) 3g by heating woody biomass 3p fed into the gasification furnace 33 to a high temperature, and to generate power by driving the gas engine 38 using the generated combustible gas 3g as fuel. Examples of the woody biomass 3p fed into the gasification furnace 33 include wood chips (including pellets). Electricity generated by the biomass power generation facility 3 is supplied to the cultivation facility 1 via a power transmission line (not shown) and can be used to drive various devices in the cultivation facility 1. Each component will now be described in order.

[0052] The hopper 31 is a device that stores woody biomass 3p to be fed into the gasification furnace 33. The woody biomass 3p stored inside the hopper 31 is transported toward the gasification furnace 33 by the conveyor 32, and is fed into the gasification furnace 33 from above.

[0053] The gasification furnace 33 is a device that reacts woody biomass 3p to obtain product gas 3g. The woody biomass 3p fed from the top of the furnace and the gasifying agent 3w fed from the bottom of the furnace undergo a thermal reaction (pyrolysis) to produce product gas (carbon monoxide, carbon dioxide, hydrogen, methane, etc.) and char (ash). The gasifying agent 3w is, for example, a mixture of air, oxygen, steam, etc., and is fed into the gasification furnace 33 by a blower AR1 from a gasifying agent supply port provided below the gasification furnace. The product gas 3g is sent from the top of the gasification furnace 33 to a product gas heat exchanger 34.

[0054] The produced gas heat exchanger 34 is a heat exchanger that exchanges heat between the produced gas 3g sent out from the gasification furnace 33 and the exhaust gas purification device 40, which will be described later, and functions to extract thermal energy from the produced gas 3g passing through the produced gas heat exchanger 34 and transfer it to the exhaust gas purification device 40. The produced gas 3g that has passed through the produced gas heat exchanger 34 is sent to the produced gas cooler 35.

[0055] The product gas cooler 35 is a device that cools the product gas 3g using a cooler. In the process of cooling the combustible gas 3g, moisture and tar 3t (wood tar and wood vinegar) are removed from the product gas 3g. The dust collector 36 is a device that collects the tar 3t and moisture remaining in the product gas 3g cooled by the product gas cooler 35. The booster fan AR2 draws in the product gas 3g from the dust collector 36 and sends it out toward the filter device 37. The product gas 3g is pressurized in the process of being sent out by the booster fan AR2.

[0056] The filter device 37 removes tar 3t contained in the generated gas 3g, and is equipped with a HEPA filter to remove dirt, dust, etc. The HEPA filter is mainly made of glass fiber with a diameter of 1 to 10 μm or less.

[0057] The gas engine 38 is a device that generates electricity by being driven by the product gas 3g from which tar 3t has been removed by the filter device 37 as fuel, and is configured to generate electricity by driving the coupled generator Z. Exhaust gas 3h generated by the gas engine 38 is sent to an exhaust gas heat exchanger 39.

[0058] The exhaust gas heat exchanger 39 is a device that exchanges heat between the exhaust gas 3h from the gas engine 38 and a heat exchange medium (water) circulating in a hot and cold water pipe G extending from the hot and cold water supply device 2. In other words, the exhaust gas heat exchanger 39 extracts thermal energy from the exhaust gas 3h and warms (heats) the heat exchange medium (water) in the hot and cold water pipe G, thereby circulating and supplying hot water to the hot and cold water supply device 2. The heat exchange medium (water) is heated to, for example, about 80°C. The exhaust gas 3h that has passed through the exhaust gas heat exchanger 39 is sent to an exhaust gas purification device 40. The configuration of the exhaust gas purification device 40 will be described later.

[0059] The exhaust gas 3h (hereinafter referred to as purified gas 3j) from which harmful substances such as nitrogen oxides (NOx) have been removed by the exhaust gas purification device 40 is sucked in by the suction blower AR3, supplied to an exhaust tower 41, which is a chimney for discharging the purified gas 3j, and discharged from the top of the exhaust tower 41.

[0060] <10. Configuration of exhaust gas purification device> FIG. 11 is a schematic diagram showing an example of the configuration of the exhaust gas purification device 40 of FIG. The exhaust gas purification device 40 is equipped with, in order from the upstream side of the treatment process, a PM filter 401, a flow sensor 402, a CO removal device 403, a purified gas heat exchanger 404, an SCR device 405, HC adsorption devices 406a and 406b, a SOx removal device 407, and a mist separator 408. The exhaust gas 3h sent into the exhaust gas purification device 40 passes through the PM filter 401, the flow sensor 402, and the purified gas heat exchanger 404, and flows into the SCR device 405.

[0061] The PM filter 401 is formed as a porous filter using ceramics, stainless steel, or the like, and captures particulate matter (PM) such as soot in the exhaust gas.

[0062] The flow rate sensor 402 measures the flow rate of the exhaust gas 3h and transmits information relating to the measurement value to the biomass power generation facility control device C2.

[0063] The CO removal device 403 is a device that incorporates a CO removal catalyst that removes CO (carbon monoxide) through an oxidation reaction of CO, and the CO removal catalyst can be, for example, a precious metal catalyst using a precious metal such as platinum (Pt). CO concentration sensors S41, S41 that measure CO concentration are disposed at the inlet and outlet of the CO removal device 403, respectively, and information related to the measurements taken by the CO concentration sensors S41, S41 is transmitted to the biomass power generation facility control device C2, and by monitoring these measurements (observing whether the concentration is decreasing normally), it is possible to determine whether the CO removal device 403 is functioning normally.

[0064] The purified gas heat exchanger 404 receives thermal energy from the product gas heat exchanger 34 and serves to heat the exhaust gas 3h. This increases the temperature of the exhaust gas 3h and reduces the power consumption of a first heater 404a (described later). The first heater 404a is a heating device provided upstream of the SCR device 405 to activate the catalyst of the SCR device 405.

[0065] The SCR device 405 is a tubular component equipped with SCR catalysts (selective catalytic reduction catalysts) 405a, 405b and an ammonia slip catalyst 405c. The SCR catalysts 405a, 405b purify NOx (nitrogen oxides) contained in the exhaust gas 3h. For example, a urea SCR catalyst that uses urea can be used as the SCR catalysts 405a, 405b. The ammonia slip catalyst 405c is an oxidation catalyst that prevents ammonia that has not completely reacted with the SCR catalysts 405a, 405b from being discharged to the outside. The exhaust gas 3h from which NOx has been purified in the SCR device 405 is sent to the HC adsorption devices 406a, 406b.

[0066] In addition, NOx concentration sensors S42, S42 that measure NOx concentration are provided at the inlet and outlet of the SCR device 405, respectively, and information regarding the measurements taken by the NOx concentration sensors S42, S42 is transmitted to the biomass power generation equipment control device C2, and by monitoring these measurements (observing whether the concentration is decreasing normally), it is possible to determine whether the SCR device 405 is functioning normally.

[0067] The HC adsorption devices 406a, 406b are adsorption towers containing an adsorbent that adsorbs HCs (hydrocarbons), and the HC adsorption material is, for example, a honeycomb adsorbent having an adsorbent layer formed on the cell walls of a honeycomb carrier. Each of the HC adsorption devices 406a, 406b comprises a pair of a first HC adsorption device 406a and a second HC adsorption device 406b.

[0068] Three-way electromagnetic switching valves B41, B42 are provided at the inlets and outlets of the HC adsorption devices 406a, 406b, respectively, and the biomass power generation facility control device C2 can control whether the exhaust gas 3h flows through (passes through) the first HC adsorption device 406a or the second HC adsorption device 406b. This allows the exhaust gas 3h to continue flowing through the normally functioning HC adsorption device 406a, 406b, even if the first HC adsorption device 406a or the second HC adsorption device 406b breaks down, making it easy to replace the broken HC adsorption device 406a, 406b. In addition, HC concentration sensors S43, S43, S43 that measure HC concentration are provided at the inlet and outlet of the HC adsorption devices 406a, 406b, respectively, and information regarding the measurement values ​​measured by the HC concentration sensors S43, S43, S43 is transmitted to the biomass power generation equipment control device C2, and by monitoring these measurement values ​​(observing whether the concentration is decreasing normally), it is possible to determine whether the HC adsorption devices 406a, 406b are functioning normally.

[0069] A second heater 404b and an SOx removal device 407 are disposed downstream of the HC adsorption devices 406a and 406b. The second heater 404b is provided to activate the catalyst of the SOx removal device 407.

[0070] The SOx removal device 407 is a device for removing sulfur oxides (SOx), and is configured by supporting an SOx absorbent on a carrier formed of alumina fiber, cordierite honeycomb, or the like. This SOx absorbent is formed by dispersing metal particles that serve as oxide catalysts on the surface of SOx absorption particles, which are a mixed powder of porous calcium hydroxide (Ca(OH)2) and potassium hydroxide (KOH) formed into granules. These metal particles 22b are formed of platinum (Pt), for example, but can also be formed of metal particles containing at least one element selected from nickel (Ni), palladium (Pd), platinum (Pt), and gold (Au).

[0071] The exhaust gas 3h that has passed through the SOx removal device 407 passes through a mist separator 408, where mist generated as the temperature of the exhaust gas 3h decreases is removed, and the exhaust gas 3h is then sent out as purified gas 3j to the outside of the exhaust gas purification device 40. The purified gas 3j thus produced contains CO2 (carbon dioxide), and the carbon dioxide concentration is, for example, 10% to 15%.

[0072] When the biomass power generation facility control device C2 determines that any of the CO removal device 403, SCR device 405, HC adsorption device 406a, and SOx removal device 407 is not functioning normally (concentration has not decreased), it outputs an alert via a predetermined output means (a display screen or an audio device) to notify the user. At this time, the biomass power generation facility control device C2 may be configured to temporarily suspend the operation of each device and mechanism of the biomass power generation facility 3. It may also be configured to calculate the replacement time for each catalyst based on the decrease in the CO concentration, HC concentration, NOx concentration, and SOx concentration, and notify the user. Note that, in the exhaust gas purification device 40, an ASC (Ammonia Slip Catalyst) device may be disposed downstream of the SCR device 405 as needed. The ASC device is a device including a catalyst that oxidizes NH3 (ammonia) flowing out from the upstream SCR device 405 to reduce its toxicity.

[0073] <11. Configuration of recovery equipment> FIG. 12 is a diagram schematically illustrating an embodiment of the recovery facility 5. As shown in FIG. The recovery facility 5 is a facility that stores purified gas 3j (hereinafter referred to as recovered gas 3k) recovered from the biomass power generation facility 3 and supplies the stored recovered gas 3k to the cultivation facility 1. In detail, as shown in Fig. 12, from the upstream side of the recovered gas 3k, the recovery facility 5 is provided with a recovery branch pipe 51 that branches off from a pipe that connects the exhaust gas purification device 40 to the exhaust tower 41 and connects to the recovery facility 5, a buffer tank 52 that temporarily stores the recovered gas 3k that flows from the recovery branch pipe 51, a storage tank 53 that stores the recovered gas 3k, and a recovered gas supply pipe 54 that supplies the recovered gas 3k in the storage tank 53 to the cultivation facility 1.

[0074] A (first) electromagnetic on-off valve B51 and an intake blower AR51 for drawing the recovered gas 3k from the biomass power generation facility 3 into the recovery facility 5 are provided on the recovery branch pipe 51. When the recovered gas 3k is supplied (flowed into) the buffer tank 52, which will be described later, the recovery facility control device C3 controls the electromagnetic on-off valve B51 to be open and drives the intake blower AR51. When the supply (flow) of the recovered gas 3k to the buffer tank 52 is stopped, the (first) electromagnetic on-off valve B51 is controlled to be closed and the drive of the intake blower AR51 is stopped. Furthermore, although not shown, a flow rate sensor is provided on the recovery branch pipe 51 so as to be able to measure the amount of recovered gas 3k supplied to the buffer tank 52, and the recovery facility control device C3 is configured to acquire measurement information from the flow rate sensor.

[0075] The buffer tank 52 is provided with a purge valve B52 that can be controlled to open and close by the recovery equipment control device C3, and by controlling the opening of the purge valve B52, the recovered gas 3k temporarily stored in the buffer tank 52 can be discharged to the outside (outside the buffer tank 52). In addition, a pressure sensor (not shown) is provided in the buffer tank 52, and the recovery equipment control device C3 can determine whether the buffer tank 52 is full by obtaining information about the measurement value of the pressure sensor.

[0076] The buffer tank 52 is also provided with a recovered gas concentration sensor S51 for measuring the concentration of the recovered gas S51. The recovered gas concentration sensor S51 measures the carbon dioxide concentration (CO2 concentration) of the recovered gas S51 in the buffer tank 52, and the measurement information of the recovered gas concentration sensor S51 is acquired by the recovery equipment control device C3. The recovered gas concentration sensor S51 is preferably configured to measure NOx, CO, and HC concentrations in addition to carbon dioxide concentration. The recovery equipment control device C3 is preferably configured to open the purge valve B52 for a predetermined time to discharge (clear) the recovered gas 3k in the buffer tank 52 when any of the NOx, CO, and HC concentrations measured by the recovered gas concentration sensor S51 exceeds a predetermined upper limit. This prevents the recovered gas 3k from being supplied to the cultivation equipment 1 and used on the cultivated crop N, even though it is not sufficiently purified. The recovery equipment control device C3 may be configured to perform the above-described process for one or two of the NOx, CO, and HC concentrations. Furthermore, when the buffer tank 52 is sufficiently filled with the recovered gas 3k (full), if the carbon dioxide concentration in the buffer tank 52 is less than a predetermined concentration (e.g., 8%), the recovery equipment control device C3 is preferably configured to determine that the carbon dioxide concentration of the recovered gas 3k recovered in the buffer tank 52 is low, open the purge valve B52 for a predetermined time to discharge (clear) the recovered gas 3k in the buffer tank 52, and then close the purge valve B52 again to recover the recovered gas 3k into the buffer tank 52. Note that, at this time, it is also preferable that the supply of the recovered gas 3k to the storage tank 53 be stopped while the recovered gas 3k is being recovered again into the buffer tank 52 (until a predetermined amount of the recovered gas 3k has flowed into the buffer tank 52). This makes it possible to preferably prevent a situation in which recovered gas 3k with a carbon dioxide concentration less than the predetermined concentration is supplied to the storage tank 53, and stabilize the carbon dioxide concentration of the recovered gas 3k supplied to the cultivation equipment 1.

[0077] A (second) electromagnetic on-off valve B53 and a compressor AR52, which are controlled by the recovery equipment control device C3, are provided on the piping connecting the buffer tank 52 and the storage tank 53. The compressor AR52 is, for example, a compressor, and pressurizes the recovered gas 3k supplied from the buffer tank 52 to the storage tank 53 and stores the gas in the storage tank 53. A check valve (not shown) is provided on the inlet (inflow) side of the storage tank 53. When the recovered gas 3k is supplied (flows) into the storage tank 53, the recovery equipment control device C3 controls the (second) electromagnetic on-off valve B53 to be open and drives the compressor AR52. When the supply (inflow) of the recovered gas 3k to the buffer tank 52 is stopped, the (second) electromagnetic on-off valve B53 is controlled to be closed and the drive of the compressor AR52 is stopped.

[0078] The storage tank 53 stores compressed recovered gas 3k, and a remaining amount detection sensor S52 provided in the storage tank 53 can detect the remaining amount of recovered gas 3k in the storage tank 53. The remaining amount detection sensor S52 detects the remaining amount of recovered gas 3k in the storage tank 53 by measuring the flow rate and pressure of the recovered gas 3k, and the recovery equipment control device C3 is configured to acquire information related to the detected remaining amount of recovered gas 3k.

[0079] The recovered gas 3k stored in the storage tank 53 passes through a recovered gas supply pipe 54 connected to the cultivation equipment 1 (more specifically, the carbon dioxide supply device V) and is supplied to the cultivation equipment 1. A (third) electromagnetic on-off valve B54 and an air supply pump AR53 are provided on the recovered gas supply pipe 54. When the recovered gas 3k is to be supplied to the cultivation equipment 1, the (third) electromagnetic on-off valve B54 is controlled to be open by the recovery equipment control device C3, and the air supply pump AR53 is driven. Furthermore, when the supply of the recovered gas 3k is to be stopped, the (third) electromagnetic on-off valve B54 is controlled to be closed, and the drive of the air supply pump AR53 is stopped.

[0080] The recovered gas 3k supplied to the cultivation facility 1 is locally applied to the vicinity of the cultivated plants N through the carbon dioxide supply pipe V2 of the carbon dioxide supply device V, so that even if the carbon dioxide concentration of the recovered gas 3k is low (approximately 8% to 10%), sufficient application effects can be obtained. As a result, carbon dioxide can be applied to the cultivated plants N more stably and effectively than before, while reducing the environmental load by recycling the exhaust gas 3h.

[0081] <12. Example of control by the control unit (carbon dioxide capture process)> An example of control by the control unit C will be described below. Fig. 13 is a flowchart showing the flow of carbon dioxide capture processing by the control unit C. This carbon dioxide capture processing is processing in which the capture equipment 5 captures purified gas 3j containing carbon dioxide from the biomass power generation facility 3. This processing is realized by the biomass power generation facility 3 and the capture equipment 5 working together through the execution of programs stored in the biomass power generation facility control device C2 and the capture equipment control device C3.

[0082] In addition, it is preferable that the carbon dioxide recovery process be started at the timing when the purified gas 3j is supplied to the exhaust tower 41 (in other words, at the timing when the purified gas 3j becomes recoverable), and can be configured to start under conditions such as, for example, the gasification furnace 33 starting operation, the gas engine 38 starting operation, or the flow rate sensor 402 measuring a flow rate of the exhaust gas 3h equal to or greater than a predetermined amount.

[0083] 13, when the carbon dioxide recovery process starts, the control unit C acquires information about the remaining amount of recovered gas 3k in the storage tank 53 from the remaining amount detection sensor S52, and determines whether the remaining amount of recovered gas 3k in the storage tank 53 is less than a specified amount (step #11). Here, the specified amount is, for example, the amount of recovered gas 3k equivalent to a one-day application amount for the cultivated plant N, and an amount is set that allows it to be determined that the storage tank 53 contains a sufficient amount of recovered gas 3k.

[0084] If it is determined that the remaining amount of recovered gas 3k in the storage tank 53 is less than the specified amount (Y in step #11), it can be determined that the remaining amount of recovered gas 3k in the storage tank 53 is insufficient, and therefore the control unit C controls the purified gas 3j to be recovered as recovered gas 3k in the buffer tank 52. That is, in order to supply (introduce) the recovered gas 3k into the buffer tank 52, the recovery equipment control device C3 controls to open the electromagnetic on-off valve B51 and drives the intake blower AR51 (step #12). On the other hand, if it is determined that the remaining amount of recovered gas 3k in the storage tank 53 is equal to or greater than the specified amount (N in step #11), it can be determined that the remaining amount of recovered gas 3k in the storage tank 53 is sufficient, and therefore the carbon dioxide recovery process is terminated.

[0085] In addition, in step #12 of recovering the purified gas 3j (recovered gas 3k) in the buffer tank 52, the control unit C monitors the measurement value of the pressure sensor of the buffer tank 52, and when the buffer tank 52 is sufficiently filled with purified gas 3j (recovered gas 3k) (when it is full), it considers that the recovery of the purified gas 3j (recovered gas 3k) is completed and proceeds to the next step #13.

[0086] Next, the control unit C acquires information about the carbon dioxide concentration measured by the recovered gas concentration sensor S51 and determines whether the carbon dioxide concentration in the buffer tank 52 is equal to or greater than a specified concentration (step #13). If the carbon dioxide concentration in the buffer tank 52 is less than the specified concentration (N in step #13), it determines that the carbon dioxide concentration of the recovered gas 3k recovered in the buffer tank 52 is low (not sufficient for application), and returns to step #12 to restart the recovery of the purified gas 3j (recovered gas 3k). On the other hand, if the carbon dioxide concentration in the buffer tank 52 is equal to or greater than the specified concentration (Y in step #13), the recovered gas 3k in the buffer tank 52 is supplied to the storage tank 53 (step #14). That is, the (second) electromagnetic on-off valve B53 is controlled to be open for a predetermined time, and the compressor AR52 is driven.

[0087] Next, the control unit C determines whether the remaining amount of recovered gas 3k in the storage tank 53 is equal to or greater than a specified amount (step #15). When it is determined that the remaining amount of recovered gas 3k in the storage tank 53 is equal to or greater than the specified amount (Y in step #15), it can be determined that the remaining amount of recovered gas 3k in the storage tank 53 is sufficient, and the process ends. When it is determined that the remaining amount of recovered gas 3k in the storage tank 53 is less than the specified amount (N in step #15), it can be determined that the remaining amount of recovered gas 3k in the storage tank 53 is still insufficient, and the process returns to step #12. Although not shown, the carbon dioxide recovery process also ends when it becomes impossible to recover purified gas 3j from the biomass power generation facility 3 (for example, when the gas engine 38 stops operating).

[0088] <13. Example of control by the control unit (carbon dioxide supply process)> FIG. 14 is a flowchart showing the flow of the carbon dioxide supply process performed by the control unit. This carbon dioxide supply process is a process of supplying recovered gas 3k containing carbon dioxide from the recovery facility 5 to the cultivation facility 1. This process is realized by the cultivation facility 1 and the recovery facility 5 working together by executing programs stored in the cultivation facility control device C1 and the recovery facility control device C3.

[0089] 14, the control unit C acquires information about the measurement value of the cultivation environment measuring sensor S and determines whether the carbon dioxide concentration in the cultivation space 16 is equal to or lower than a set value (step #21). Here, the set value is set in advance in the control unit C, and a lower limit of the carbon dioxide concentration preferable for cultivating the cultivated product N is set (so that carbon dioxide is applied when the carbon dioxide concentration falls below the lower limit). Note that the set value does not have to be a fixed value, but may be a variable value depending on the type of cultivated product N, the amount of solar radiation, the time of day, etc.

[0090] If the carbon dioxide concentration in the cultivation space 16 is equal to or lower than the set value (Y in step #21), it is determined whether the remaining amount of the recovered gas 3k in the storage tank 53 is equal to or higher than the lower limit (step #22). That is, it is determined whether the minimum amount of recovered gas 3k that can be supplied to the cultivation equipment 1 remains in the storage tank 53.

[0091] If it is determined that the carbon dioxide concentration in the cultivation space 16 is equal to or higher than the set value (Y in step #22), the recovered gas 3k in the storage tank 53 is supplied to the carbon dioxide supply device V of the cultivation equipment 1 (step #23). That is, the control unit C controls the (third) electromagnetic on-off valve B54 to be open for a predetermined time, and controls the air supply pump AR53 to be driven.

[0092] Next, the recovered gas 3k is applied to the cultivation space 16 by the carbon dioxide supplying device V, thereby locally applying carbon dioxide to the plants N (step #25). On the other hand, if it is determined that the remaining amount of recovered gas 3k in the storage tank 53 is not equal to or greater than the lower limit (N in step #22), carbon dioxide is applied to the cultivation space 16 from a carbon dioxide gas cylinder (not shown) attached to the carbon dioxide supplying device V as a supply source, thereby locally applying carbon dioxide to the plants N (step #25). As described above, when the carbon dioxide concentration in the cultivation space 16 decreases and there is a shortage of carbon dioxide for the plants N, the process of locally applying the purified gas 3j (recovered gas 3k) to the plants N can stably and effectively apply carbon dioxide while effectively reducing the environmental load compared to conventional methods. In particular, the purified gas 3j (recovered gas 3k) can be supplied to the plants N directly without being concentrated, thereby achieving a sufficient carbon dioxide application effect, thereby enabling ecological cultivation.

[0093] The embodiments of the present invention have been described above. The present invention is not limited to the above-described embodiments. It goes without saying that the present invention can be modified appropriately within the scope of the technical concept.

[0094] The cultivation environment measuring sensor S may be configured to be capable of further measuring CO concentration, HC concentration, NOx concentration, and SOx concentration, and the control unit C may be configured to monitor the measurement values ​​of the cultivation environment measuring sensor S, and stop the supply of the recovered gas 3k from the recovery facility 5 when any of the measured values ​​of the CO concentration, HC concentration, NOx concentration, and SOx concentration becomes an abnormal value. In this case, the recovered gas 3k may be configured to be able to be discharged from a detour route separately provided in the recovered gas supply pipe 54. Furthermore, the control unit C may be configured to stop the recovery of the purified gas 3j from the biomass power generation facility 3 to the recovery facility 5.

[0095] A carbon dioxide supply source (e.g., a carbon dioxide gas cylinder), an air supply source (e.g., an air compressor), and an electromagnetic on-off valve for regulating the supply amounts of carbon dioxide and air may be disposed on the piping connecting the buffer tank 52 and the storage tank 53, or on the piping of the recovered gas supply pipe 54, and the control unit C may be configured to control the carbon dioxide concentration of the recovered gas 3k (purified gas 3j) supplied from the recovery facility 5 to the cultivation facility 1 by controlling the opening and closing of the electromagnetic on-off valve (flow rate adjustment valve). This further stabilizes the carbon dioxide concentration of the recovered gas 3k (purified gas 3j) supplied to the cultivation facility 1 (if the carbon dioxide concentration of the recovered gas 3k is higher than a predetermined set concentration, air is supplied, and if lower, carbon dioxide is supplied to the piping), thereby achieving a concentration suitable for cultivating the crop N. [Explanation of symbols]

[0096] A. Cultivation System AR1 blower AR2 Booster Fan AR3 Suction Blower AR51 Retractable Blower AR52 compressor AR53 Air Pump B1 First switching valve B2 Second switching valve B41, B42 Three-way solenoid valve B51, B53, B54 Solenoid valve B52 Solenoid valve (purge valve) C control section C1 Cultivation equipment control device C2 Biomass power generation equipment control device C3 Recovery equipment control device Ct information terminal PN1,PN2 liquid transfer pump G Hot and cold piping Q Floor opening and closing mechanism Q1 Vent opening / closing motor bp1~bp6 ports g1 Serpentine section g2 Return pipe g3 Outlet pipe g4 Branch piping S Cultivation environment measurement sensor S1 Humidity Sensor S2 Temperature Sensor S3 Carbon Dioxide Sensor S4 solar radiation sensor S5 Water Level Sensor S41 CO concentration sensor S42 NOx concentration sensor S43 HC concentration sensor S44 SOx concentration sensor S51 recovered gas concentration sensor S52 Remaining amount detection sensor R cable Y Dehumidification / humidification heating / cooling mechanism y1 Surplus water storage section T-shelf frame N cultivated products NW Network V Carbon dioxide supply device V2 carbon dioxide supply pipe V3 gas supply pipe V4 connecting pipe W irrigation device W2 water pipe L(L1,L2,L3) Lighting light t1 support frame t2 upper rectangular frame t3 Lower U-shaped frame t4 fixing frame t5 outlet t6 caster u1 Planter container p(p1~p3) Solar panels k (k1~k3) Pulley parts (iron frame pulley) m(m1~m3) Winding motor 1 Cultivation equipment 2. Hot and cold water supply equipment 2T cooling tank 3. Biomass power generation facilities 3p wood chips 3w gasifier 3g produced gas 3h exhaust gas 3j Purification gas 3k recovered gas 5. Recovery equipment 51 Recovery branch pipe 52 Buffer Tank 53 Storage Tank 54 Recovery gas supply pipe 10 Wooden Building 11 Main body 11a Foundation 11b Post 11c Ceiling section 12 Roof 12a Roof beam 12b Connecting beam 12c Rafters 12th floor ceiling fan 13 Floor 13b Shutter plate 13n Ventilation hole 13d support plate 13r Laura 13F Underfloor Fan 14 Wall shading device 15. Shading power generation device 16 Cultivation space 17 Underfloor space 18 Cultivation shelf device 19 Sprinkler system 31 Hopper 32 Conveyor 33 Gasifier 34 Produced gas heat exchanger 35 Produced gas cooler 36 Dust collector 37 Filter device 37 38 Gas Engine 39 Exhaust gas heat exchanger 40 Exhaust gas purification device 41 Exhaust Stack 401 PM filter 402 Flow Sensor 403 CO removal equipment 404 Purified Gas Heat Exchanger 404a First heater 404b Second heater 405 SCR device 405a,405b SCR catalyst 405c Ammonia Slip Catalyst 406a First HC adsorption device 406b Second HC adsorption device 407 SOx removal equipment 408 Mist Separator

Claims

1. A cultivation system comprising: a cultivation facility for cultivating crops; a hot and cold water supply device attached to the cultivation facility and circulating hot and cold water under the floor of the cultivation facility; a biomass power generation facility that circulates hot and cold water to the hot and cold water supply device and generates power using biomass as a raw material; a recovery facility that recovers purified gas containing carbon dioxide from the biomass power generation facility as a recovered gas and is configured to be able to supply the recovered gas to the cultivation facility; and a control unit that controls these facilities, The cultivation facility includes a carbon dioxide supply device that locally applies carbon dioxide to the cultivated object through a carbon dioxide supply pipe within a cultivation space where the cultivated object is cultivated; A cultivation system characterized in that the recovery equipment is configured to supply the recovered gas to the carbon dioxide supply device and apply the recovered gas to the cultivated plants when the carbon dioxide concentration in the cultivation space falls below a set value.

2. the recovery facility includes a buffer tank that temporarily stores the recovered gas recovered from the biomass power generation facility, and a storage tank that receives the recovered gas from the buffer tank and stores the recovered gas, and is configured to supply the recovered gas stored in the storage tank to the carbon dioxide supply device; The cultivation system of claim 1, characterized in that the control unit acquires information about the measured value of carbon dioxide concentration from a recovered gas concentration sensor that measures the concentration of the recovered gas in the buffer tank, and controls the recovered gas to be supplied from the buffer tank to the storage tank when the two-stage carbon concentration of the recovered gas in the buffer tank is equal to or higher than a specified concentration.

3. The biomass power generation facility includes a purification device that purifies exhaust gas generated from a gas engine to generate the purified gas, and the purification device includes a NOx removal means that removes NOx contained in the exhaust gas, The cultivation system of claim 2, wherein the control unit is configured to acquire information regarding the measured NOx concentration from the collected gas concentration sensor, and when the NOx concentration of the collected gas in the buffer tank exceeds a predetermined upper limit value, to open a purge valve provided in the buffer tank for a predetermined time to discharge the collected gas in the buffer tank.

Images