JP2011179699A - Air conditioning system and method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air conditioning system capable of suppressing energy consumption and performing uniform air conditioning even to an air-conditioned space of a large volume. <P>SOLUTION: This air conditioning system 70 conditioning the air in a cultivation house H as the air-conditioned space of large volume, produces humidity-conditioned air by controlling a humidity of the air by bringing the air into contact with a humidity absorbing liquid L, and supplies the humidity-conditioned air to the cultivation house H. Here, the humidity-conditioned air having water vapor partial pressure difference to the air in the cultivation house H is produced. Heat energy can be uniformly diffused in the cultivation house H by correcting the water vapor partial pressure difference. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an air conditioning system and an air conditioning method, and more particularly to an air conditioning system and an air conditioning method for performing air conditioning on a large volume space such as a large cultivation house.

Conventionally, house cultivation in which vegetables and fruits are cultivated in a cultivation house such as a plastic house or a plastic house is known. In house cultivation, the growth of plants is promoted by air conditioning (air conditioning) in the house. When such a cultivation house becomes large, for example, the length in the longitudinal direction is about 100 m and the area is about 2000 m ^2. Therefore, the space to be air-conditioned (hereinafter referred to as “air-conditioning target space”). ) Is also large, for example, about 15000 m ³ . Moreover, as another example of a large volume air-conditioning target space, there is a staircase of a high-rise building, for example. The staircase is a continuous space from the first floor to the rooftop floor, and has a volume of, for example, several thousand to 10,000 m ³ .

When air conditioning is performed on such a large volume air-conditioning target space, there is a problem of how to uniformly air-condition this air-conditioning target space. For example, when performing several tens to several hundreds m ³ about the air conditioning of a relatively small space such as a room, usually, the amount of conditioned air per hour is supplied to the air conditioning target space from the air conditioner, the air-conditioned It is designed to be 6-8 times the volume of the space. According to such a design, the air-conditioning target space is replaced with air 6 to 8 times per hour. Therefore, the supply amount (air supply amount) of the air-conditioned air is denoted as 6 to 8 times / h. In this way, if a sufficient amount of conditioned air can be supplied to the volume of the air-conditioning target space, the air-conditioned air can be distributed throughout the air-conditioning target space, and uniform air-conditioning can be performed on the air-conditioning target space. it can.

  However, when trying to supply conditioned air in an amount of about 6 to 8 times / h to a large volume of air-conditioning target space such as a large cultivation house or a staircase of a high-rise building, The air conditioner becomes larger and the energy consumption becomes enormous.

  Conventionally, when heating is performed as air conditioning, warm air is supplied to the air-conditioning target space by the heating device, or part of the air in the air-conditioning target space is heated. Due to such heating, the temperature of a part of the air in the air-conditioning target space becomes high, and convection occurs due to a temperature difference with the surrounding air, and heat is diffused. Heat is also propagated by the action of radiation. However, depending on such convection and radiation, it takes time to uniformly heat the air in the large volume of air-conditioning target space, and the volume of the air conditioning target space is too large for the heat energy to be applied. In the air-conditioning space, a portion where heat energy is not substantially propagated is formed.

  For this reason, conventionally, when air-conditioning a large-volume air-conditioning target space such as a cultivation house, a normal air-conditioning device is used, and in order to realize uniform air-conditioning for a large-volume air-conditioning target space, for example, , Pulling ducts from the air conditioner to provide air supply openings at various locations in the air conditioning target space, diffusing heat with the heat radiation panel, or stirring the conditioned air supplied from the air conditioner with the stirring air blower Measures are taken such that a plurality of air conditioners are distributed in the air conditioning target space.

  Further, Patent Literature 1 discloses a cultivation house that performs air conditioning in the cultivation room without using a duct. In this cultivation house, the space in the house is divided into three rooms by a partitioning film: a cultivation room for cultivating the target crop, an equipment room equipped with a heat source device, and a conveyance room for conveying conditioned air to the cultivation room. The conditioned air generated in the equipment room is conveyed to the cultivation room through the conveyance room by the air supply fan, and the return air from the cultivation room is taken into the equipment room by the forced exhaust fan.

JP-A-10-178930

  However, in the above-described conventional technology, in order to reduce energy consumption and perform uniform air conditioning for a large volume of air-conditioning target space, facilities such as a duct, a heat radiation panel, a blower (fan), and a partition film are all required. Alternatively, a plurality of air conditioners are required depending on the volume of the air conditioning target space.

  Therefore, the present invention provides an air conditioning system and an air conditioning method capable of reducing energy consumption and performing uniform air conditioning for a large volume of air conditioning target space.

  One aspect of the present invention is an air conditioning system that performs air conditioning on a large volume of an air-conditioning target space. The air conditioning system is configured to bring air into contact with a hygroscopic substance so that the air in the air-conditioning target space is in contact with air. Humidity control means for generating humidity-conditioned air having a water vapor partial pressure difference, air supply means for supplying the air-conditioned air generated by the humidity control means to the air-conditioning target space, and air in the air-conditioning target space And temperature control means for adjusting the temperature, and the thermal energy in the air-conditioning target space is diffused by correcting the water vapor partial pressure difference in the air-conditioning target space.

  Thus, the air conditioning system of the present invention supplies humidity-conditioned air having a partial pressure difference to the water vapor partial pressure of the air in the air-conditioning target space to the air-conditioning target space. Since this partial pressure difference is corrected instantaneously in the air-conditioning target space, the heat energy is instantaneously dispersed in the air-conditioning target space. Therefore, when air-conditioning a large volume of air-conditioning target space, the air-conditioning target space can be supplied without supplying a large amount of air-conditioning air to the air-conditioning target space as in the conventional room air-conditioning. Air conditioning can be performed quickly and uniformly.

  In the air conditioning system of the present invention, the temperature adjustment means is a hot air heater, and the humidity adjustment means generates humidity-conditioned air having a water vapor partial pressure higher than the water vapor partial pressure of the air in the air-conditioning target space. With this configuration, when heating is performed, humidity-controlled air having positive thermal energy is supplied to the air-conditioning target space, and positive thermal energy is instantaneously diffused together with positive thermal energy given from the hot air heater. As a result, the thermal energy of the air in the air-conditioning target space increases uniformly, and the temperature rises uniformly.

  In the air conditioning system of the present invention, the temperature adjustment means is a cool air cooler, and the humidity adjustment means generates humidity-conditioned air having a water vapor partial pressure lower than the water vapor partial pressure of the air in the air-conditioning target space. With this configuration, when air-conditioning is performed, humidity-controlled air having negative heat energy is supplied to the air-conditioning target space, and negative heat energy is instantaneously diffused together with the negative heat energy given from the cooler. Thus, the thermal energy of the air in the air-conditioning target space is uniformly reduced, and the temperature is uniformly lowered.

  In the air conditioning system of the present invention, the water vapor partial pressure difference may be 100 Pa or more, and the amount of air supplied per hour supplied by the air supply means is 1/10 or less of the volume of the space to be air-conditioned. It may be. In the air conditioning system of the present invention, the water vapor partial pressure difference may be 1 KPa or more.

  The air-conditioning system of the present invention is suitably used as an air-conditioning system in which a stairs room of a cultivation house or building is an air-conditioning target space, for example.

  The air-conditioning method of the present invention is an air-conditioning method for air-conditioning a large-volume air-conditioning target space. Generating humidity-conditioned air having a water vapor partial pressure difference, supplying the generated humidity-conditioned air to the air-conditioning target space, adjusting the temperature of the air in the air-conditioning target space, and the water vapor in the air-conditioning target space The heat energy in the air-conditioned space is diffused by the action of correcting the partial pressure difference.

  The present invention performs temperature adjustment on a large volume of air-conditioning target space, and supplies humidity-conditioned air having a water vapor partial pressure difference with the air in the air-conditioning target space, thereby correcting the partial pressure difference. Makes it possible to spread heat energy quickly and evenly in the air-conditioned space.

It is a figure which shows the structure of the air conditioning system of embodiment of this invention. It is a figure which shows the structure of the humidity control apparatus of embodiment of this invention.

  Hereinafter, an air conditioning system and a humidity control apparatus according to an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a diagram showing the overall configuration of the air conditioning system 70. In the present embodiment, a case where the air conditioning system 70 is applied to a cultivation house that is a large volume air-conditioning target space will be described as an example. The cultivation house H to which the air conditioning system 70 is applied is, for example, a plastic house or a plastic house, and provides an environment for growing the plant P. The cultivation house H is 100 m wide, 20 m long and 10 m high, and has a shape in which a roof extends obliquely from the upper end of the longitudinal wall, and the internal space serving as the air-conditioning target space is about 15000 m ³ . It has a volume. Note that the air conditioning system of the present invention can also be applied to other large-volume air-conditioning target spaces including a staircase in a building.

  The air conditioning system 70 has a humidity control device 1 for air conditioning the air in the cultivation house H. The humidity control apparatus 1 adjusts the humidity of the air taken in from the outside, and supplies it in the cultivation house H. Exhaust heat generated by the cogeneration generator 73 is supplied to the humidity control apparatus 1. The air conditioning system 70 uses the exhaust heat of the cogeneration generator 73 to improve energy use efficiency. In the cultivation house H, an illumination 71 and a temperature / humidity sensor 72 for cultivation are provided. The electric power generated by the cogeneration generator 73 is supplied to the lighting 71 for cultivation.

  The air conditioning system 70 includes a control device 74 connected to the humidity control device 1 and the temperature / humidity sensor 72. The control device 74 receives information on the temperature and humidity in the cultivation house H from the temperature / humidity sensor 72. The control device 74 controls the humidity control device 1 by sending a control signal to the humidity control device 1 based on the temperature and humidity information received from the temperature / humidity sensor 72. Based on the control signal, the humidity control apparatus 1 drives the processor 10, the regenerator 40, the heat pump 30, and the like to perform a humidity control operation for humidification or dehumidification.

  The air in the cultivation house H is discharged from an exhaust port (not shown). The exhaust port is opened only when humidity control is performed by the humidity control apparatus 1, and is closed when the humidity control apparatus 1 is not operating. The exhaust port is relatively small, and the flow of air from the inside of the cultivation house H to the outside of the cultivation house H is formed by the supply pressure of the humidity control air by the humidity control apparatus 1. Thereby, while being able to prevent invasion of fine organisms or the like from the exhaust port, it is possible to prevent outside air from entering the cultivation house H and increasing the air conditioning load. In order to prevent relatively large insects from entering, it is preferable to provide an insect filter at the exhaust port.

  The air conditioning system 70 includes an inside-air combustion warm air heater 75 and a cooling blower 76 in the cultivation house H. The inside air combustion warm air heater 75 is a heating device that generates warm air by burning oxygen in the cultivation house H. The inside-air combustion hot air heater 75 also has a function as a carbon dioxide gas applicator. When the carbon dioxide concentration in the cultivation house H is lowered, carbon dioxide can be applied by the indoor air combustion warm air heater 75.

  The cooling fan 76 is a cooling device that generates cold air by cooling the air with groundwater or irrigation water. In the present embodiment, since the humidity-controlled air whose humidity (latent heat) is adjusted in the humidity control apparatus 1 is supplied into the cultivation house H, even if the room temperature (sensible heat) is not lowered so much by cooling, The heat energy in the cultivation house H can be reduced. Therefore, an environment suitable for the growth of the plant P can be created by gentle cooling using groundwater or irrigation water.

[Humidity control device]
First, a schematic configuration of the humidity control apparatus 1 will be described. FIG. 2 is a diagram illustrating a configuration of the humidity control apparatus 1 used in the air conditioning system 70. The humidity control apparatus 1 has a processing machine 10 that processes air taken from the outside of the cultivation house H and supplies the air into the cultivation house H. The processor 10 adjusts the humidity by bringing the taken-in air into gas-liquid contact with the hygroscopic liquid L as a hygroscopic substance.

  In the present embodiment, lithium chloride (LiCl) is used as the hygroscopic liquid L. Since lithium chloride has a high dust removing action and sterilizing power, air taken in from the outside not only gives and receives moisture, but is also cleaned by bringing it into gas-liquid contact with lithium chloride. The hygroscopic liquid L is not limited to lithium chloride, but a salt solution having deliquescence such as saline, polyhydric alcohols having high hygroscopicity such as glycerin, ethylene glycol, propylene glycol, and other hygroscopic properties, An inexpensive liquid having sterilizing power and dust removing power may be used. Further, as the hygroscopic substance, an adsorbent such as silica gel may be used instead of the hygroscopic liquid.

  The humidity control apparatus 1 has a regenerator 40 that regenerates the hygroscopic liquid L used for the processing in the processing machine 10. Here, the regeneration of the hygroscopic liquid L refers to returning the hygroscopic liquid L whose concentration has changed by performing humidity adjustment to the state before the humidity adjustment treatment. For example, in the dehumidifying process, moisture in the air is absorbed by the hygroscopic liquid L by cooling the hygroscopic liquid L having a high solution concentration and passing air through the cooled hygroscopic liquid L. Although the solution concentration of the hygroscopic liquid L is lowered by this treatment, the hygroscopic liquid L having a low solution concentration cannot perform sufficient dehumidification. The hygroscopic liquid L having a high solution concentration is returned to the hygroscopic liquid L having a high solution concentration by a regeneration process for desorbing moisture from the hygroscopic liquid L having a low solution concentration. In the case of the humidification process, conversely, since the solution concentration of the hygroscopic liquid L is increased, the hygroscopic liquid L is returned to the low solution concentration by the regeneration process in which the hygroscopic liquid L absorbs moisture.

  In FIG. 2, an example in which one regenerator 40 is connected to one processor 10 is shown. For example, when a processor 10 is provided in each of a plurality of cultivation houses H, May be configured to connect a single regenerator 40 to a plurality of processors 10.

  The processor 10 and the regenerator 40 are connected by a first hygroscopic liquid conduit 61 and a second hygroscopic liquid conduit 62. The first hygroscopic liquid pipe 61 is a pipe for sending the hygroscopic liquid L from the processor 10 to the regenerator 40, and the second hygroscopic liquid pipe 62 is a hygroscopic pipe from the regenerator 40 to the processor 10. This is a conduit for feeding the sex liquid L. By using the first hygroscopic liquid pipe 61 and the second hygroscopic liquid pipe 62 to circulate the hygroscopic liquid L between the processing machine 10 and the regenerator 40, the moisture absorption used in the processing machine 10. The organic liquid L is regenerated by the regenerator 40 and returned to the processor 10.

[Processing machine]
Next, the configuration of the processor 10 will be described. The processing machine 10 includes a housing 11 that contains a filler 14 for performing gas-liquid contact between air and the hygroscopic liquid L, and a hygroscopic liquid supply unit 15 that drops the hygroscopic liquid L on the filler 14. It has. The hygroscopic liquid L dropped from the hygroscopic liquid supply unit 15 slowly flows down through the filler 14. Therefore, the hygroscopic liquid L stays in the filler 14 temporarily. In the lower part of the housing 11, there is a liquid tank 16 for storing the hygroscopic liquid L that has passed through the filler 14.

  The housing 11 is formed with an intake port 12 for taking in air and an exhaust port 13 for discharging air. A dust filter 18 that prevents sand and dust from entering the housing 11 and an insect repellent filter 19 that prevents insects from passing through the dust filter are attached to the intake port 12. The exhaust port 13 is provided with a fan 17 for sending air taken from outside into the cultivation house H. When the fan 17 rotates, air is taken into the housing 11 from the outside of the cultivation house H, and is sent into the cultivation house H through a path indicated by an arrow in FIG. An insect filter 20 is also attached to the exhaust port 13.

  As shown in FIG. 2, since the filler 14 is provided on a passage through which air passes, the air taken in from the intake port 12 passes through the filler 14. As described above, since the hygroscopic liquid L stays in the filler 14, moisture is transferred between the hygroscopic liquid L and the air passing through the filler 14 to perform dehumidification or humidification. Is called. Further, the air passing through the filler 14 is purified by the dust removing action and the sterilizing action of lithium chloride. As shown in FIG. 2, the filler 14 is provided so as to block the air passage, and there is no gap between the inner surface of the housing 11 and the filler 14. Therefore, the air introduced into the cultivation house H surely passes through the filler 14.

  The processing machine 10 has a pipe 21 for supplying the hygroscopic liquid L in the liquid tank 16 to the hygroscopic liquid supply unit 15. A pump 22 is attached to the pipe 21 to suck up the hygroscopic liquid L in the liquid tank 16.

  The pipe 21 is provided with a first heat exchanger 31 of the heat pump 30, and the hygroscopic liquid L is heated or cooled by the first heat exchanger 31. The first heat exchanger 31 controls the temperature of the hygroscopic liquid L supplied from the hygroscopic liquid supply unit 15 of the processor 10. Whether the hygroscopic liquid L is heated or cooled depends on whether the processor 10 humidifies or dehumidifies the air. That is, when the processor 10 performs the humidification process, the hygroscopic liquid L is heated in order to release the moisture contained in the hygroscopic liquid L into the air. Conversely, when the processor 10 performs the dehumidifying process, the hygroscopic liquid L is cooled in order to make the hygroscopic liquid L easily absorb moisture in the air.

  The first hygroscopic liquid pipe 61 for sending the hygroscopic liquid L in the liquid tank 16 to the regenerator 40 is connected to the pipe 21 for sucking the hygroscopic liquid L from the liquid tank 16 through the three-way valve 23. ing. The three-way valve 23 controls the amount of the hygroscopic liquid L sent to the hygroscopic liquid supply unit 15 of the processor 10 and the amount of the hygroscopic liquid L sent to the regenerator 40 through the first hygroscopic liquid pipe 61. In the present embodiment, the three-way valve 23 is configured such that (amount of hygroscopic liquid L sent to the hygroscopic liquid supply unit 15): (amount of hygroscopic liquid L sent to the regenerator 40) is from 8: 2 to 9: 1. Control to be a percentage.

  The first hygroscopic liquid conduit 61 is provided with a second heat exchanger 32 that cools or heats the hygroscopic liquid L supplied to the regenerator 40. The second heat exchanger 32 controls the temperature of the hygroscopic liquid L supplied to the regenerator 40. The first heat exchanger 31 and the second heat exchanger 32 constitute a heat pump 30, and heat moves between the first heat exchanger 31 and the second heat exchanger 32.

  Here, the configuration of the heat pump 30 will be described. The heat pump 30 includes a first heat exchanger 31, a second heat exchanger 32, a compressor 33, an expansion valve 34, and a refrigerant pipe 35 that connects them. The heat pump 30 can cause the first heat exchanger 31 to function as an evaporator or a condenser by reversing the refrigerant flow. The second heat exchanger 32 performs a process opposite to that of the first heat exchanger 31.

[Playback machine]
Next, the playback device 40 will be described. The regenerator 40 regenerates the hygroscopic liquid L by bringing the hygroscopic liquid L sent from the processor 10 into air-liquid contact. The regenerator 40 includes a casing 41 that houses a filler 44 for performing gas-liquid contact between air and the hygroscopic liquid L, and a hygroscopic liquid supply unit 45 that drops the hygroscopic liquid L on the filler 44. have. In addition, a liquid tank 46 that stores the hygroscopic liquid L that has passed through the filler 44 is provided at the lower portion of the housing 41.

  The hygroscopic liquid supply unit 45 is filled with the hygroscopic liquid supply unit 45 a that supplies the hygroscopic liquid L sent through the first hygroscopic liquid pipe 61 to the filler 44, and the hygroscopic liquid L sucked up from the liquid tank 46. And a hygroscopic liquid supply unit 45 b for supplying the material 44. Whether the second heat exchanger 32 of the heat pump 30 provided in the first hygroscopic liquid pipe 61 heats or cools the hygroscopic liquid L is whether the hygroscopic liquid L is concentrated or diluted by the regenerator 40 by. That is, when the regenerator 40 concentrates the hygroscopic liquid L, the hygroscopic liquid L is heated in order to release the moisture contained in the hygroscopic liquid L into the air. On the contrary, when the regenerator 40 dilutes the hygroscopic liquid L, the hygroscopic liquid L is cooled in order to make the hygroscopic liquid L easily absorb moisture in the air.

  The housing 41 is formed with an intake port 42 for taking in air and an exhaust port 43 for discharging air. A dust filter 56 that prevents sand and dust from entering the housing 41 and an insect repellent filter 57 that prevents insects from passing through the dust filter 56 are attached to the intake port 42.

  The exhaust port 43 is provided with a fan 47 for exhausting air from the inside of the housing 41. As the fan 47 rotates, the air in the housing 41 is discharged to the outside, and the inside of the housing 41 has a negative pressure with respect to the outside of the housing 41. Flows in. An insect filter 58 is also attached to the exhaust port 43. Thereby, even when the fan 47 is stopped, insects can be prevented from entering the housing 41 from the exhaust port 43.

  In FIG. 2, arrows indicate the flow of air. As shown in FIG. 2, the air taken in from the intake 42 passes through the filler 44. Since the hygroscopic liquid L stays in the filler 44, moisture is exchanged between the hygroscopic liquid L and air. Thereby, the hygroscopic liquid L is regenerated.

  The regenerator 40 has a pipe 49 that supplies the hygroscopic liquid L in the liquid tank 46 to the first hygroscopic liquid conduit 61. The hygroscopic liquid L in the liquid tank 46 is sucked up by the pump 50 to the first hygroscopic liquid pipe 61. The hygroscopic liquid L is supplied again to the regenerator 40 through the second heat exchanger 32.

  The regenerator 40 has a supply pipe 51 for supplying the hygroscopic liquid L in the liquid tank 46 to the hygroscopic liquid supply unit 45b. A pump 52 is attached to the supply pipe 51 and sucks up the hygroscopic liquid L in the liquid tank 46. The tube 51 is provided with a heating source 53. This heating source heats the hygroscopic liquid L flowing through the pipe 51 using the exhaust heat of the cogeneration generator 73.

  The heating source 53 heats the hygroscopic liquid L sucked up from the liquid tank 46 when it is desired to increase the temperature in addition to the temperature control by the second heat exchanger 32. The heated hygroscopic liquid L is dropped onto the filler 44 from the hygroscopic liquid supply unit 45 b and is brought into gas-liquid contact with the filler 44. The hygroscopic liquid L that has passed through the filler 44 enters the liquid tank 46. By circulating the hygroscopic liquid L in this way, the regenerator 40 performs a regeneration process of the hygroscopic liquid L.

  The regenerator 40 has a water supply pipe 54 that supplies water to the liquid tank 46. A valve 55 is provided on the water supply pipe 54, and water supply is controlled by the valve 55.

  The hygroscopic liquid L in the liquid tank 46 returns to the processor 10 through the second hygroscopic liquid conduit 62. The amount of the hygroscopic liquid L that returns from the regenerator 40 to the processor 10 is adjusted by a valve 63. In the present embodiment, the valve 63 controls the amount of the hygroscopic liquid L that is returned to the processor 10 so that the liquid level of the hygroscopic liquid L in the liquid tank 46 is constant.

  The humidity control apparatus 1 includes a heat exchanger 64 that performs heat exchange between the first hygroscopic liquid pipe 61 and the second hygroscopic liquid pipe 62. This heat exchanger 64 reduces the temperature difference between the hygroscopic liquid L flowing through the first hygroscopic liquid conduit 61 and the hygroscopic liquid L flowing through the second hygroscopic liquid conduit 62, and the pumping temperature difference of the heat pump 30 is reduced. Contributes to reduction.

[Air conditioning system operation]
Next, operation | movement of the air conditioning system 70 of this Embodiment is demonstrated. The air conditioning system 70 measures the temperature and humidity of the air in the cultivation house H by the temperature / humidity sensor 72 so that the temperature and humidity of the air in the cultivation house H hold a predetermined value or a value within a predetermined range. Perform air conditioning. For example, when the temperature of the air in the cultivation house H falls below a predetermined threshold, air conditioning is performed to increase the temperature of the air in the cultivation house H until the temperature of the air in the cultivation house H reaches the target temperature. Moreover, when the temperature of the air in the cultivation house H exceeds a predetermined threshold value, the air conditioning which lowers the temperature of the air in the cultivation house H is performed until the temperature of the air in the cultivation house H reaches the target temperature. . These operations are executed by controlling the humidity control device 1 based on the temperature and humidity information obtained from the temperature / humidity sensor 72 by the control device 74.

  Initially, the air-conditioning operation | movement in the case of reducing the temperature of the air in the cultivation house H is demonstrated. In this case, while operating the air blower 76 for cooling and supplying cool air into the cultivation house H, the humidity control apparatus 1 dehumidifies the outside air, and the humidity adjustment is lower in the water vapor partial pressure than the air in the cultivation house H. Air is generated and supplied into the cultivation house H. At this time, the supply amount of the cold air in the cooling fan 76 may be about 0.1 times / h with respect to the volume of the cultivation house H.

  The humidity control apparatus 1 causes the first heat exchanger 31 of the heat pump 30 to function as an evaporator and the second heat exchanger 32 to function as a condenser. A hygroscopic liquid L having a high solution concentration is placed in the liquid tank 16 of the processor 10.

  The processor 10 sucks up the hygroscopic liquid L having a high solution concentration from the liquid tank 16, cools the hygroscopic liquid L in the first heat exchanger 31 functioning as an evaporator, and supplies the hygroscopic liquid L to the hygroscopic liquid supply unit 15. To do. In the air treatment unit 11, the hygroscopic liquid L is dropped onto the filler 14. The dropped hygroscopic liquid L slowly passes through the filler 14 and returns to the liquid tank 16.

  At the same time as the above operation, the processor 10 rotates the fan 17 provided at the exhaust port 13 to take in air into the housing 11, and the air and liquid of the hygroscopic liquid L are filled with the filler 14. After the contact, the treated air is supplied into the cultivation house H through the exhaust port 13. Since the filler 14 contains the hygroscopic liquid L having a high solution concentration and a low temperature, moisture in the air is absorbed by the hygroscopic liquid L, and dehumidified conditioned air is supplied into the cultivation house H. In addition, since heat exchange is also performed simultaneously between the hygroscopic liquid L and air, humidity-conditioned air is cooled.

  Here, the processor 10 generates humidity-conditioned air having a lower humidity (lower water vapor partial pressure) than the air in the cultivation house H. The supply amount of the humidity-controlled air to the cultivation house H per hour is one tenth of the volume of the cultivation house H, that is, the processor 10 supplies the humidity-conditioned air at 0.1 times / h. .

  When the processing device 10 continues the dehumidifying operation, the hygroscopic liquid L is diluted and becomes difficult to absorb moisture in the air, so that the dehumidifying efficiency is lowered. Therefore, the hygroscopic liquid L is regenerated by the regenerator 40. The humidity control apparatus 1 supplies a part of the hygroscopic liquid L sucked from the liquid tank 16 of the processor 10 to the first hygroscopic liquid pipe 61 and sends it to the regenerator 40. The amount of the hygroscopic liquid L sent to the regenerator 40 is adjusted by the three-way valve 23.

  A second heat exchanger 32 functioning as a condenser is disposed in the middle of the first hygroscopic liquid pipe 61, and the hygroscopic liquid L sent to the regenerator 40 is the second heat exchanger 32. Heated by. The regenerator 40 regenerates the hygroscopic liquid L having a low solution concentration supplied from the first hygroscopic liquid conduit 61. Specifically, the hygroscopic liquid supply unit 45 a drops the hygroscopic liquid L heated by the second heat exchanger 32 onto the filler 44. The dropped hygroscopic liquid L enters the liquid tank 46 through the filler 44.

  At the same time as the above operation, the regenerator 40 discharges air from the inside of the casing 41 by the fan 47 provided at the discharge port 43. Thereby, air flows into the housing 41 through the intake port 42. The air that has flowed in comes into gas-liquid contact with the hygroscopic liquid L by the filler 44 and is then discharged from the discharge port 43. When the air contacts the hygroscopic liquid L, moisture is desorbed from the high temperature hygroscopic liquid L and escapes into the air, and the concentration of the hygroscopic liquid L increases. The hygroscopic liquid L that has passed through the filler 44 enters the liquid tank 46.

  Part of the hygroscopic liquid L in the liquid tank 46 is sucked up by the pump 52 and supplied to the hygroscopic liquid supply unit 45 b through the supply pipe 51. At this time, the heating source 53 heats the hygroscopic liquid L. As a result, the moisture of the hygroscopic liquid L is more easily released, and the regenerator 40 can perform an efficient concentration process.

  A part of the hygroscopic liquid L in the liquid tank 46 is supplied to the first hygroscopic liquid pipe 61. The hygroscopic liquid L supplied to the first hygroscopic liquid conduit 61 is heated by the second heat exchanger 32 and supplied again to the hygroscopic liquid supply unit 45a. As the hygroscopic liquid L circulates between the filler 44 and the liquid tank 46 in this way, the concentration of the hygroscopic liquid L gradually increases.

  The hygroscopic liquid L in the liquid tank 46 that has been subjected to the regeneration process returns to the processor 10 through the second hygroscopic liquid conduit 62. The hygroscopic liquid L undergoes heat exchange with the hygroscopic liquid L toward the regenerator 40 by the heat exchanger 64 on the way back to the processor 10, and the temperature decreases.

As described above, the processing machine 10 generates humidity-conditioned air having a water vapor partial pressure lower than the water vapor partial pressure of the air in the cultivation house H and supplies it to the cultivation house H. For example, when the water vapor partial pressure of the air in the cultivation house H is 241 Pa, the control device 74 controls the humidity control device 1, so that the processor 10 generates humidity control air having a water vapor partial pressure of 138 Pa. And it supplies in the cultivation house H. The supply amount of the conditioned air from the processing machine 10 to the cultivation house H at this time is 1500 m ³ / h. Since the volume of the cultivation house H is 15000 m ³ , this air supply amount is 0.1 times / h.

  When humidified air is supplied to the cultivation house H, the air is supplied from the cooling fan 76 by the action of correcting the partial pressure difference −103 Pa between the water vapor partial pressure 241 Pa of the air in the cultivation house H and the water vapor partial pressure 138 Pa of the humidity adjusted air. Along with the negative heat energy of the cold air, the negative heat energy diffuses instantaneously in the cultivation house H, and the temperature of the air in the cultivation house H quickly and uniformly decreases. The operation for reducing the temperature in the cultivation house H by the air conditioning system 70 has been described above.

  Next, the air conditioning operation when the temperature of the air in the cultivation house H is raised will be described. In this case, while operating the inside air combustion warm air heater 75 and supplying warm air into the cultivation house H, the humidity control apparatus 1 humidifies outside air, and water vapor partial pressure is higher than the air in the cultivation house H. High humidity air is generated and supplied into the cultivation house H. At this time, the supply amount of the warm air in the inside-air combustion warm air heater 75 may be about 0.1 times / h with respect to the volume of the cultivation house H.

  When the air is humidified by the humidity control apparatus 1, the heat pump 30 causes the first heat exchanger 31 to function as a condenser and the second heat exchanger 32 to function as an evaporator. A hygroscopic liquid L having a low solution concentration (containing a lot of water) is placed in the liquid tank 16 of the processing machine 10. In the case of the humidification process, basically, the humidity control apparatus 1 performs an operation opposite to the dehumidification process.

  While the processor 10 heats the hygroscopic liquid L having a low solution concentration and drops it onto the filler 14, the processor 10 releases the moisture from the hygroscopic liquid L by passing the taken-in air through the filler 14. Humidify. In addition, heat exchange is also performed simultaneously between the hygroscopic liquid L and air, and air is heated.

  Here, the processor 10 generates humidity-conditioned air having a higher humidity (higher water vapor partial pressure) than the air in the cultivation house H. The supply amount of the humidity-controlled air to the cultivation house H per hour is one tenth of the volume of the cultivation house H, that is, the processor 10 supplies the humidity-conditioned air at 0.1 times / h. .

  When the processing device 10 continues the humidification operation, the hygroscopic liquid L is concentrated and the moisture released into the air is reduced, so that the hygroscopic liquid L is regenerated by the regenerator 40. The humidity control apparatus 1 supplies a part of the hygroscopic liquid L sucked from the liquid tank 16 of the processor 10 to the first hygroscopic liquid pipe 61 and sends it to the regenerator 40.

  The hygroscopic liquid L sent to the regenerator 40 is cooled by the second heat exchanger 32 in the first hygroscopic liquid conduit 61. The cooled hygroscopic liquid L is supplied to the hygroscopic liquid supply unit 45a of the regenerator 40. Regeneration in which the hygroscopic liquid L absorbs moisture by passing the air taken in from the outside through the filler 44 while dropping the hygroscopic liquid L having a high concentration cooled by the hygroscopic liquid supply unit 45a onto the filler 44. Process. The hygroscopic liquid L that has passed through the filler 44 enters the liquid tank 46.

  Part of the hygroscopic liquid L in the liquid tank 46 is sucked up by the pump 52 and supplied to the hygroscopic liquid supply unit 45 b through the supply pipe 51. A part of the hygroscopic liquid L in the liquid tank 46 is supplied to the first hygroscopic liquid pipe 61. The hygroscopic liquid L supplied to the first hygroscopic liquid conduit 61 is cooled by the second heat exchanger 32 and supplied again to the hygroscopic liquid supply unit 45a. As described above, the hygroscopic liquid L circulates between the filler 44 and the liquid tank 46, so that the concentration of the hygroscopic liquid L gradually decreases.

  When diluting and regenerating the hygroscopic liquid L, the hygroscopic liquid L may be diluted by supplying water directly to the hygroscopic liquid L instead of taking moisture from the outside air into the hygroscopic liquid L. . The regenerator 40 opens the valve 55 of the water supply pipe 54 and supplies water to the liquid tank 46. The hygroscopic liquid L in the liquid tank 46 that has been subjected to the regeneration process returns to the processor 10 through the second hygroscopic liquid conduit 62.

As described above, the processor 10 generates conditioned air having a water vapor partial pressure higher than the water vapor partial pressure of the air in the cultivation house H, and supplies the humidified air to the cultivation house H. The water vapor partial pressure difference between the air in the cultivation house H and the humidity-controlled air is desirably 100 Pa or more, and more desirably 1 KPa or more. For example, when the water vapor partial pressure of the air in the cultivation house H is 138 Pa, the control device 74 controls the humidity control device 1, so that the processing machine 10 generates humidity control air having a water vapor partial pressure of 241 Pa. And it supplies in the cultivation house H. At this time, the supply amount of the conditioned air from the processor 10 to the cultivation house H is set to 1500 m ³ / h. Since the volume of the cultivation house H is 15000 m ³ , this supply amount is 0.1 times / h.

  When humidity control air is supplied to the cultivation house H, it is supplied from the indoor air combustion warmer 75 by correcting the partial pressure difference 103 Pa between the water vapor partial pressure 241 Pa of the air in the cultivation house H and the water vapor partial pressure 138 Pa of the humidity adjustment air. Along with the positive heat energy of the warm air that is generated, the positive heat energy diffuses instantaneously in the cultivation house H, and the temperature of the air in the cultivation house H rises quickly and uniformly. The operation for increasing the temperature in the cultivation house H by the air conditioning system 70 has been described above.

  As described above, when it is desired to lower the temperature of the air in the cultivation house H, the air is dehumidified by the processing machine 10 to generate humidity-conditioned air having a low water vapor partial pressure. At this time, the air is cooled. By making gas-liquid contact with the hygroscopic liquid L, heat exchange with the hygroscopic liquid L is performed. By this heat exchange, the heat energy of the air is taken away by the hygroscopic liquid L, and the heat energy of the conditioned air becomes low. Therefore, the temperature of the air in the cultivation house H can be reduced by exchanging the heat energy between the humidity-controlled air having such low thermal energy and the air in the cultivation house H.

  On the other hand, when it is desired to increase the temperature of the air in the cultivation house H, the processing machine 10 humidifies the air to generate humidity-conditioned air having a high water vapor partial pressure. At this time, the air is heated and absorbs moisture. Heat exchange is performed between the liquid L and the hygroscopic liquid L by gas-liquid contact. By this heat exchange, heat energy is given to the air from the hygroscopic liquid L, and the heat energy of the humidity control air becomes high. Therefore, the temperature of the air in the cultivation house H can be raised by exchanging the heat energy between the humidity-controlled air having such high thermal energy and the air in the cultivation house H.

  In the air conditioning system 70 according to the present embodiment, the humidity control apparatus 1 supplies humidity-controlled air having a large partial pressure difference with respect to the water vapor partial pressure of the air in the cultivation house H, so that the partial pressure difference is corrected. In the cultivation house H, thermal energy is instantly diffused. Therefore, the temperature of the air in the cultivation house H can be increased or decreased quickly and uniformly with a small amount of hot air or cold air of 0.1 times / h.

  Note that, in the air conditioning system 70 of the present embodiment, the greater the partial pressure difference, the greater the effect of heat energy dispersion by correcting the partial pressure difference in the house H. In addition, the greater the amount of air supplied, the greater the effect of heat energy dispersion by correcting the partial pressure difference in the house H. Therefore, even if the air supply amount is not increased, by taking a large partial pressure difference, it is possible to expect a heat energy dispersion effect by sufficiently correcting the partial pressure difference. Of course, it is better if a sufficient air supply amount is provided while ensuring a large partial pressure difference.

  In the above-described embodiment, the air conditioning system 70 includes the control device 74, and the control device 74 controls the humidity control device 1 based on the temperature and humidity information from the temperature and humidity sensor 72. Not limited to. The air conditioning may be realized by an administrator confirming the temperature / humidity sensor 72 and operating the humidity control apparatus 1.

  In the above-described embodiment, the example in which the temperature of the hygroscopic liquid L is controlled using the heat pump 30 has been described, but the heat pump 30 is not necessarily used. For example, when exhaust heat at a sufficient temperature is obtained from the cogeneration generator 73, the hygroscopic liquid L may be heated using this, or the hygroscopic liquid L may be used using groundwater or irrigation water. It may be cooled.

  INDUSTRIAL APPLICABILITY The present invention has an excellent effect that the air-conditioning target space can be uniformly air-conditioned with respect to the volume of the air-conditioning target space, and can be applied to an air-conditioning system that air-conditions a large-volume space such as a large cultivation house.

DESCRIPTION OF SYMBOLS 1 Humidity control apparatus 10 Processing machine 11 Housing | casing 12 Inlet 13 Outlet 14 Filler 15 Hygroscopic liquid supply part 16 Liquid tank 17 Fan 18 Dust filter 19 Insect filter 20 Insect filter 21 Pipe 22 Pump 23 Three-way valve 30 Heat pump 31 1st 1 heat exchanger 32 second heat exchanger 33 compressor 34 expansion valve 40 regenerator 41 housing 42 intake port 43 discharge port 44 filler 45 hygroscopic liquid supply unit 46 liquid tank 47 fan 49 pipe 50 pump 51 supply Pipe 52 Pump 53 Heat source 54 Water supply pipe 55 Valve 56 Dust filter 57 Insect filter 58 Insect filter 61 First hygroscopic liquid pipe 62 Second hygroscopic liquid pipe 63 Valve 64 Heat exchanger 70 Air conditioning system 71 Illumination 72 Temperature and humidity Sensor 73 Cogeneration generator 74 Control device 75 Inside air hot air heater 76 Air conditioner

Claims (7)

An air conditioning system that air-conditions a large volume of air-conditioned space,
Humidity control means for bringing air into contact with a hygroscopic substance and generating humidity-conditioned air having a water vapor partial pressure difference with the air in the air-conditioning target space;
An air supply means for supplying humidity-conditioned air generated by the humidity-control means to the air-conditioning target space;
Temperature adjusting means for adjusting the temperature of the air in the air conditioning target space,
An air conditioning system characterized by diffusing thermal energy in the air conditioning target space by correcting the water vapor partial pressure difference in the air conditioning target space. The temperature control means is a hot air heater,
2. The air conditioning system according to claim 1, wherein the humidity control unit generates humidity-controlled air having a water vapor partial pressure higher than a water vapor partial pressure of air in the air-conditioning target space. The temperature control means is a chiller,
2. The air conditioning system according to claim 1, wherein the humidity control unit generates humidity-controlled air having a water vapor partial pressure lower than a water vapor partial pressure of air in the air-conditioning target space.   3. The air conditioning according to claim 2, wherein the water vapor partial pressure difference is 100 Pa or more, and an air supply amount per hour supplied by the air supply means is 1/10 or less of a volume of the air conditioning target space. system.   The air conditioning system according to claim 4, wherein the water vapor partial pressure difference is 1 KPa or more.   The air conditioning system according to any one of claims 1 to 5, wherein the air conditioning target space is a staircase of a cultivation house or a building. An air-conditioning method for air-conditioning a large volume of air-conditioned space,
Air is brought into contact with the hygroscopic substance to generate humidity-conditioned air having a water vapor partial pressure difference with the air in the air-conditioned space,
Supplying the generated humidity-conditioned air to the air-conditioned space;
Performs temperature control on the air in the air-conditioned space,
An air conditioning method characterized by diffusing thermal energy in the air-conditioning target space by correcting the water vapor partial pressure difference in the air-conditioning target space.