Air conditioning systems, air conditioning methods, and air-conditioned room equipment

Abstract

To provide an air conditioning system that can precisely control the amount of dehumidification of the target air. [Solution] The air conditioning system 10 includes a dehumidifier 1 that produces dry air DA having an ultra-low dew point by dehumidifying target air TA, and a supply device 2 that supplies target air TA to the dehumidifier 1. The dehumidifier 1 includes an electrolysis device 1A that chemically decomposes (electrolyzes) the moisture in the target air TA. The electrolysis device 1A includes a pair of electrodes 1c1 that come into contact with the target air TA and generate hydrogen by electrolysis of water, and ions sandwiched between the pair of electrodes 1c1 transmission It comprises an electrolyte 1c2 having properties. The electrolysis apparatus 1A comprises an electrode 1c1 which is electrically different in nature from the target air TA and which produces hydrogen by electrolysis of water, and an electrolyte 1c2 which has ion conductivity and is sandwiched between the electrodes 1c1 which are different in nature.

Description

Technical Field

[0001] The present disclosure relates to an air conditioning system, an air conditioning method, and air conditioning chamber equipment.

Background Art

[0002] Patent Document 1 describes "communicating in series the processing zones of the first to third desiccant rotors provided with the first to third coolers, sucking outside air from the first cooler side, processing it in the processing zones of the second and third desiccant rotors, and supplying the air with an ultra-low dew point to the indoor side. A large amount of return air on the indoor side is returned downstream of the processing zone of the first desiccant rotor upstream of the processing zone of the second desiccant rotor, and the regeneration zones of the third to first desiccant rotors provided with the third to first coolers are communicated in series. Each regenerator is heated at 80°C or lower, and a part of the supply air is supplied to the regeneration zones of the third regenerator and the third desiccant rotor, and the regenerated air is sequentially passed through the regeneration zones of the second and first desiccant rotors and exhausted to the outside."

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the technology described in Patent Document 1, dehumidification is performed by physically adsorbing moisture (water vapor) in outside air onto the desiccant rotor. Since the adsorption of moisture is physical adsorption, it is difficult to finely control the adsorption amount (dehumidification amount). The problem to be solved by the present disclosure is to provide an air conditioning system, an air conditioning method, and air conditioning chamber equipment capable of finely controlling the dehumidification amount of target air to be dehumidified.

Means for Solving the Problems

[0005] The air conditioning system of this disclosure comprises a dehumidifier that produces a dry gas having an ultra-low dew point by dehumidifying a target gas to be dehumidified, and a water splitting device that chemically decomposes the moisture in the target gas, and a supply device that supplies the target gas to the dehumidifier. Other solutions will be described later in the embodiments for carrying out the invention. [Effects of the Invention]

[0006] According to this disclosure, it is possible to provide an air conditioning system, an air conditioning method, and air conditioning room equipment that can precisely control the amount of dehumidification of the target air to be dehumidified. [Brief explanation of the drawing]

[0007] [Figure 1] This is a schematic diagram showing the air conditioning system and air conditioning room equipment of the first embodiment. [Figure 2] This is a block diagram showing the specific hardware configuration of the control device. [Figure 3] This graph shows the change in humidity when control is performed using a sensor in this disclosure. [Figure 4] This graph shows the humidity change in a conventional example where no sensor-based control is used. [Figure 5] This is a flowchart of the air conditioning method disclosed herein. [Figure 6] This is a schematic diagram showing the air conditioning system and air conditioning room equipment of the second embodiment. [Figure 7] This is a schematic diagram showing the air conditioning system and air conditioning room equipment of the third embodiment. [Figure 8] This is a schematic diagram showing the air conditioning system and air conditioning room equipment of the fourth embodiment. [Figure 9] This is a schematic diagram showing the air conditioning system and air conditioning room equipment of the fifth embodiment. [Figure 10] This is a schematic diagram showing the air conditioning system and air conditioning room equipment of the sixth embodiment. [Figure 11] This is a schematic diagram showing the air conditioning system and air conditioning room equipment of the seventh embodiment. [Figure 12]This is a schematic diagram showing the air conditioning system and air conditioning room equipment of the eighth embodiment. [Figure 13] This is a schematic diagram showing the air conditioning system and air conditioning room equipment of the ninth embodiment. [Figure 14] This is a schematic diagram showing the air conditioning system and air conditioning room equipment of the 10th embodiment. [Figure 15] This is a schematic diagram showing the air conditioning system and air conditioning room equipment of the 11th embodiment. [Figure 16] This is a schematic diagram showing the air conditioning system and air conditioning room equipment of the 12th embodiment. [Figure 17] This is a schematic diagram showing the air conditioning system and air conditioning room equipment of the 13th embodiment. [Figure 18] This is a schematic diagram showing the air conditioning system and air conditioning room equipment of the 14th embodiment. [Modes for carrying out the invention]

[0008] The following describes embodiments for implementing this disclosure, with reference to the drawings. The following is merely an example of how to implement the invention related to this disclosure, and this disclosure is not limited to the following example. Within the description of one embodiment below, other embodiments applicable to that embodiment will also be described as appropriate. This disclosure is not limited to the following embodiment, and different embodiments can be combined or modified as appropriate without significantly impairing the effects of this disclosure. In addition, the same reference numerals will be used for the same components, and redundant explanations will be omitted. Furthermore, components having the same function will be given the same name. The illustrations are schematic, and for illustrative purposes, the actual configuration may be changed or some components may be omitted or modified between drawings without significantly impairing the effects of this disclosure. Also, the same embodiment does not necessarily need to have all the components.

[0009] FIG. 1 is a schematic diagram showing an air conditioning system 10 and an air conditioned room facility 40 of the first embodiment. The air conditioned room facility 40 includes the air conditioning system 10 and an air conditioned room 30. The air conditioning system 10 is a system for producing dry air DA (an example of a dry gas) supplied to the air conditioned room 30. The air conditioned room 30 includes a space to which the dry air DA produced by the air conditioning system 10 is supplied. Here, the space referred to is, in the example of FIG. 1, the entire internal space of the air conditioned room 30. The air conditioning system 10 air - conditions (dehumidifies) the circulating air while circulating the air inside the air conditioned room 30.

[0010] The dry air DA supplied to the air conditioned room 30 has an extremely low dew point. Here, the air (gas) with an extremely low dew point refers to air (gas) having a dew point temperature of, for example, - 40°C or lower, preferably - 50°C or lower, more preferably - 60°C or lower, even more preferably - 70°C or lower, and particularly preferably - 80°C or lower. The "dew point" is the temperature at which water vapor contained in air (gas) begins to condense.

[0011] The dry air DA is produced by the air conditioning system 10 by dehumidifying target air TA (an example of a target gas) to be dehumidified. Note that the target gas is not limited to the target air TA, and for example, it is not limited if it includes gaseous moisture (water vapor). For example, the target gas may be an inert gas containing moisture (such as nitrogen, argon, etc.), oxygen containing moisture, hydrogen, or other gases. By dehumidifying the target air TA as an example of the target gas, the dry air DA as an example of the dry gas is produced. In the example of the present disclosure, the dry air DA having an extremely low dew point is supplied to the air conditioned room 30.

[0012] The air conditioned room 30 is a room in which, for example, the dew point (humidity), temperature, etc. are adjusted. In the air conditioned room 30, for example, secondary batteries such as lithium - ion batteries, organic EL (Electro Luminescence), electronic components, precision machinery, FPD (Flat Panel Display), pharmaceuticals, etc. are manufactured. The air conditioned room 30 is, for example, a dry room (registered trademark).

[0013] The air conditioning system 10 comprises a dehumidifier 1, a supply device 2, a control device 3, and a sensor 4. The dehumidifier 1 and the supply device 2 are installed in at least one (or both) of the space to which dry air DA is supplied, or in a flow path connected to the space and supplying dry air DA to the space. In the example shown in Figure 1, the dehumidifier 1 and the supply device 2 are installed inside the air conditioning room 30, which is an example of a space to which dry air DA is supplied. This prevents unintended intake of outside air or other gases from outside the air conditioning room 30 when airflow occurs near the supply device 2 due to its operation.

[0014] Dehumidifier 1 is a device that produces dry air DA (an example of a dry gas) with an ultra-low dew point by dehumidifying target air TA (an example of a target gas). In addition, dehumidifier 1 is equipped with a water splitting device 1C, the specific structure of which will be described later. Water splitting device 1C is a device that chemically decomposes the water in the target gas TA. The chemical decomposition of water proceeds according to a chemical reaction equation such as 2H2O → 2H2 + O2. This reaction proceeds, for example, through the transfer of electrons. Therefore, by controlling the decomposition conditions (reaction conditions), such as the amount of electrons transferred and the temperature of the reaction system, the amount of water that is chemically decomposed can be controlled. This allows for precise control of the amount of water decomposed, i.e., the amount of dehumidification of the target air TA.

[0015] The chemical decomposition of water typically generates hydrogen and oxygen, as shown in the chemical reaction equation above. As will be described in detail later, it is preferable that the concentration of at least hydrogen (preferably hydrogen and oxygen) in the air-conditioned room 30 be controlled.

[0016] The dehumidifier 1 further includes an inlet 1a into which the target air TA flows and an outlet 1b into which the dry air DA flows out. The water splitting device 1C is positioned between the inlet 1a and the outlet 1b. Therefore, the target air TA that flows into the dehumidifier 1 from the inlet 1a is dehumidified by, for example, contact with the water splitting device 1C. Dry air DA is obtained by dehumidification by the water splitting device 1C, and the dry air DA flows out from the outlet 1b and diffuses into the air conditioning room 30. In this example of the disclosure, the dehumidifier 1 does not have a fan or the like, and the driving force for the target air TA and dry air DA flowing inside the dehumidifier 1 is generated by, for example, the rotation of a fan that constitutes the supply device 2.

[0017] The water splitting apparatus 1C comprises at least one of the following: an electrolysis apparatus 1A that electrolyzes the water in the target air TA, or a photodecomposition apparatus 1B that photodecomposes the water in the target air TA. However, the water splitting apparatus 1C may also be a photoelectrolysis apparatus (not shown) that decomposes the water in the target air TA by combining light and electricity. In the example in Figure 1, the water splitting apparatus 1C comprises an electrolysis apparatus 1A.

[0018] The electrolysis apparatus 1A, which is a water splitting apparatus 1C, comprises a pair of electrodes 1c1 and an electrolyte 1c2. The electrodes 1c1 comprise an anode and a cathode connected to a power source (not shown). The electrodes 1c1 are, for example, mesh-shaped metal plates that come into contact with the target air TA and produce hydrogen (at least hydrogen) through the electrolysis of water. The electrolyte 1c2 is an ion-conducting material sandwiched between the pair of electrodes 1c1. The electrolyte 1c2 can be, for example, a film or a plate. Preferably, the electrolyte 1c2 is a material that does not use water molecules for ion conduction. By using such a material, it is possible to suppress the evaporation of water from the electrolyte 1c2 in the air-conditioned room 30 having an ultra-low dew point. This prevents the electrolyte 1c2 from losing its function. Specific examples of the electrolyte 1c2 include, for example, at least one liquid or solid such as an ionic liquid, ion-conducting glass, or ion-conducting ceramics.

[0019] The air conditioning system 10 in Figure 1 further includes a separation mechanism 5. The separation mechanism 5 is a mechanism that promotes the separation of hydrogen generated in the water splitting device 1C, which is the electrolysis device 1A, from the water splitting device 1C. By including the separation mechanism 5, the amount of hydrogen present in the water electrolysis system can be reduced, making it easier for the electrolysis of water to proceed. The separation mechanism 5 may also promote the separation of oxygen generated in the water splitting device 1C from the water splitting device 1C, either in place of or together with hydrogen.

[0020] The separation mechanism 5 includes at least one (or both) of the following: a flow path 55 that connects the inside of the air-conditioned room 30, the space in which the water splitting device 1C is installed, to the outside of the air-conditioned room 30, or an adsorbent 52 (described later) that adsorbs the generated hydrogen. In the example shown in Figure 1, the separation mechanism 5 includes a flow path 55. The flow path 55 is composed of, for example, piping, ducts, etc. The flow path 55 allows hydrogen generated in the water splitting device 1C to be exhausted to the outside of the air-conditioned room 30, thereby suppressing an increase in the hydrogen partial pressure in the air-conditioned room 30. The separation mechanism 5 may also include an air supply mechanism (for example, a fan; not shown) to facilitate the flow of hydrogen through the flow path 55.

[0021] Although not shown in the diagram, as described above, the water splitting apparatus 1C may also be a photoelectrolysis apparatus. In photoelectrolysis, the splitting of water is accelerated by applying power from an external power source to a semiconductor material, for example, that constitutes the photocatalyst 1d (described later). This reduces the amount of electricity and light used compared to electrolysis apparatus 1A and photoelectrolysis apparatus 1B.

[0022] In the electrolysis apparatus 1A and the photoelectrolysis apparatus (not shown), the electrode 1c1 in which the water decomposition reaction occurs (usually the electrode in contact with the target air TA) and the electrode 1c1 in which the hydrogen generation reaction occurs are separated by, for example, a membrane-like electrolyte 1c2. Therefore, by providing a flow path 55, the generated hydrogen can be released to the outside by natural diffusion or forced air conditioning. For example, the air conditioning system 10 of this disclosure produces dry air DA supplied to the air conditioning room 30, and the dew point temperature in the air conditioning room 30 is extremely low (for example, below -40°C). For example, the saturated water vapor content of dry air DA with a dew point of -40°C is 0.119 g / m³ 3 Therefore, the amount of hydrogen generated is 1m 3This is 0.16 L per 1 m³ of dry air. 3 When dry air DA is produced, it takes 250 hours for the hydrogen concentration to reach 4 volume percent. Therefore, it is preferable to release the dry air DA in the air conditioning room 30 to the outside, for example, every 250 hours, until the hydrogen concentration falls below 4 volume percent.

[0023] Supply device 2 is a device that supplies the target air TA to the dehumidifier 1. Supply device 2 is, for example, an inverter-controlled supply fan. Supply device 2 is installed, for example, near the inlet 1a of the target air TA provided in the dehumidifier 1. However, supply device 2 does not need to be installed near the inlet 1a as long as it is in a position where the amount (e.g., flow velocity) of the target air TA supplied (flowing into) the dehumidifier 1 through the inlet 1a can be controlled.

[0024] By providing the supply device 2, the supply of target air TA to the dehumidifier 1 can be accelerated, and dehumidification can be efficiently performed by the dehumidifier 1. As a result, the target air TA to be dehumidified can be quickly dehumidified, and ultra-low dew point dry air DA supplied to the air conditioning room 30 can be quickly produced. This allows the dew point of the air conditioning room 30 to be quickly lowered.

[0025] Figure 2 is a block diagram showing the specific hardware configuration of the control device 3. The control device 3 is a device that controls the amount of target air TA supplied by the supply device 2. Specifically, for example, the control device 3 controls the frequency of an inverter (not shown) provided in the supply device 2. The control device 3 is configured with, for example, a CPU (Central Processing Unit) 1001, RAM (Random Access Memory) 1002, ROM (Read Only Memory) 1003, I / F (Interface) 1004, bus 1005, etc. The CPU 1001, RAM 1002, ROM 1003 and I / F 1004 are connected, for example, via bus 1005. The control device 3 is realized when a predetermined control program (for example, a control method, air conditioning method, dehumidification method, air conditioning room operation method, etc.) stored in ROM 1003 is loaded into RAM 1002 and executed by CPU 1001. Signals and information are exchanged between the control device 3 and various devices (supply device 2, sensor 4, server, personal computer, etc.) and external networks via the I / F1004 in hardware terms.

[0026] Returning to Figure 1, the control device 3 is a device that controls the amount of target air TA supplied to the dehumidifier 1 based on at least one (or both) of the following: information that affects the dew point of the air-conditioned room 30 (an example of a space) to which dry air DA is supplied, or information that affects the dew point of the dry air DA flowing from outside the air-conditioned room 30 toward the air-conditioned room 30. In the example in Figure 1, the control device 3 controls the amount of target air TA supplied to the dehumidifier 1 based on information that affects the dew point of the air-conditioned room 30 (an example of a space) to which dry air DA is supplied.

[0027] By providing the control device 3, the dew point of the air-conditioned room 30 can be controlled to a desired dew point. Specifically, if the dew point of the air-conditioned room 30 is higher than the desired temperature, the dew point of the air-conditioned room 30 can be lowered to the desired temperature by supplying a large amount of ultra-low temperature dry air DA to the air-conditioned room 30. On the other hand, if the dew point of the air-conditioned room 30 is lower than the desired temperature, the dew point of the air-conditioned room 30 can be maintained below the desired temperature by not supplying any ultra-low temperature dry air DA to the air-conditioned room 30 at all, or by supplying a reduced amount.

[0028] The information that affects the dew point (dew point temperature) may be the dew point itself or other information.Specific examples of information other than the dew point include, for example, information from which the dew point can be determined, and at least one of the following: humidity (relative humidity, absolute humidity, etc.) inside the air conditioning room 30, temperature inside the air conditioning room 30, humidity of the target air TA, temperature of the target air TA, water vapor concentration (amount of water vapor) inside the air conditioning room 30, humidity of the dry air DA, dew point of the dry air DA, temperature of the dry air DA, etc.The information that affects the dew point can be detected by the sensor 4.The sensor 4 is a mechanism that detects information that affects the dew point.Specifically, the sensor 4 may be, for example, a hygrometer, a dew point meter, a thermometer, etc.

[0029] Other information that affects the dew point includes at least one of the following: the presence and number of people (workers, etc.) in the air-conditioned room 30, and the open / closed status of doors, windows, etc. (none of which are shown) connecting the inside and outside of the air-conditioned room 30. These can be detected by a functional unit that references records of people entering and leaving the air-conditioned room 30 (for example, implemented in the control device 3), cameras installed in the air-conditioned room 30, open / close detection sensors, etc.

[0030] Figure 3 is a graph showing the humidity change when control is performed using sensor 4 in this disclosure. Figure 4 is a graph showing the humidity change in a conventional example when control is not performed using sensor 4. In Figures 3 and 4, the horizontal axis represents time, the solid line on the vertical axis represents the humidity (dew point temperature) inside the air-conditioned room 30, the dotted line represents the airflow rate (supply amount, flow velocity) of the dry air DA supplied to the air-conditioned room 30, and the dashed line represents the energy (which may be the light intensity described later). The airflow rate of the dry air DA is the same as the airflow rate of the target air TA. Also, as mentioned above, humidity is an example of information that affects the dew point. In Figures 3 and 4, the target humidity (associated with the target dew point) inside the air-conditioned room 30 is D1. When the humidity inside the air-conditioned room 30 is D1, the airflow rate of the dry air DA is V1 and the energy is W1.

[0031] As shown in Figure 3, at time t1, the control device 3 detects via sensor 4 that the humidity in the air-conditioned room 30 has exceeded the target humidity D1. In response, the control device 3 controls the supply device 2 to increase the supply amount of target air TA from V1 to V2, thereby increasing the supply amount of dry air DA (dotted line) from V1 to V2. Simultaneously, the control device 3 increases the power consumption (dashed line) in the dehumidifier 1 from W1 to W2 in response to the increase in the supply amount of target air TA. This increases the amount of dehumidification performed by the dehumidifier 1. As a result, a greater supply of dry air DA is provided to the air-conditioned room 30 than the supply amount before time t1. Therefore, the humidity in the air-conditioned room 30 can be rapidly reduced, and the humidity can be lowered to the target humidity D1 at time t2. After the humidity has reached the target humidity D1 at time t2, the supply amount returns to V1, and the power consumption also returns to W1.

[0032] On the other hand, in the example shown in Figure 4, control using sensor 4 is not performed as described above. In this case, even if the humidity exceeds the target humidity D1 at time t1, the supply amount of dry air (dotted line) remains V1, and the power (dashed line; light intensity as described later) also remains W1. However, since the dry air DA continues to be supplied, the humidity in the air-conditioned room 30 decreases after time t1. Then, at time t3, the humidity in the air-conditioned room 30 becomes the target humidity D1.

[0033] The time from time t1 to time t2 is shorter than the time from time t1 to time t3. This is because the sensor 4 detected an increase in humidity, which led to an increase in the supply of dry air DA. Therefore, by using sensor 4 for control, the ability to track changes in humidity and other factors can be improved.

[0034] In this disclosure, by actively controlling the supply amount of target air TA by the supply device 2, the amount of target air TA to be dehumidified by the supply device 2 can be increased, and the amount of dry air DA can be increased. This allows for rapid dehumidification and improved responsiveness. In addition, when increasing the amount of target air TA to be dehumidified, it is also preferable to improve the processing capacity of the dehumidifier 1 by increasing, for example, power, light intensity, etc. This further improves responsiveness.

[0035] Figure 5 is a flowchart of the air conditioning method of the present disclosure. The air conditioning method of the present disclosure can also be referred to as the dehumidification method of the present disclosure, the operation method of the air-conditioned room 30, etc. The air conditioning method of the present disclosure can be executed, for example, by the control device 3 described above. The air conditioning method of the present disclosure includes steps S1 to S6.

[0036] Control device 3 is operating normally (step S1). In normal operation, the supply amount of target air TA (supply amount of dry air DA) is V1, and the power consumption of dehumidifier 1 is W1. That is, step S1 is a supply step in which the target air TA to be dehumidified is forcibly supplied to dehumidifier 1, for example, using supply device 2. In dehumidifier 1, the target air TA is dehumidified using a water splitting device 1C that chemically decomposes the moisture in the target air TA. The supply amount of target air TA in step S1 is V1 as described above. In addition, step S1 and step S3 described below are also dehumidification steps in which the target air TA forcibly supplied in the supply step is dehumidified using a water splitting device 1C that chemically decomposes the moisture in the target gas TA.

[0037] The control device 3 monitors the detection results of the sensor 4 and checks whether the value related to information affecting the dew point (hereinafter referred to as the index value as appropriate) exceeds the target value, which is the target humidity D1 (step S2). If it does not exceed the target value (No), step S2 is repeated at predetermined intervals. On the other hand, if it does exceed the target value (Yes), the control device 3 performs rapid operation (step S3). This allows dehumidification by the water splitting device 1C to be carried out quickly. In rapid operation, the control device 3 supplies dry air DA to the air conditioning room 30, setting the amount of target air TA supplied to the air conditioning room 30 (amount of dry air DA supplied) to V2 and the amount of power W2 for the dehumidifier 1. V2 is greater than V1 and W2 is greater than W1.

[0038] After rapid operation begins, the control device 3 monitors the detection results of the sensor 4 and checks whether the value related to information affecting the dew point (index value) has fallen to the target humidity D1, which is the target value (step S4). If it has not fallen (No), step S3 is performed again, and step S4 is repeated at predetermined intervals. On the other hand, if it has fallen (Yes), the control device 3 terminates rapid operation and returns to normal operation (step S5). Normal operation is performed in the same manner as step S1 above. Steps S2 to S5 above are performed until the user instructs to terminate operation (step S6).

[0039] Figure 6 is a schematic diagram showing the air conditioning system 10 and air conditioning room equipment 40 of the second embodiment. In the embodiment shown in Figure 6, the dehumidifier 1 and the supply device 2 are located outside the air conditioning room 30, which is the space to which dry air DA is supplied. Specifically, the dehumidifier 1 and the supply device 2 are located in a flow path 41. The flow path 41 is connected to the air conditioning room 30 and is a flow path that supplies dry air DA to the air conditioning room 30. The flow path 41 is, for example, a pipe or duct. The flow path 41 connects the air conditioning room 30 to, for example, the outside. The same amount of air that is supplied to the air conditioning room 30 through the flow path 41 is exhausted from the air conditioning room 30. This maintains a balance between supply and exhaust in the air conditioning room 30.

[0040] In this way, by providing the dehumidifier 1 and supply device 2 outside the air-conditioned room 30, the space inside the air-conditioned room 30 can be expanded. This expands the workspace inside the air-conditioned room 30 and improves work efficiency.

[0041] Although not shown in the diagram, in another embodiment, the sensor 4 is installed in the flow path 41. In this case, as described above, the sensor 4 measures information that affects the dew point of the dry air DA flowing from outside the air conditioning room 30 (space) toward the air conditioning room 30. The control device 3 then controls the amount of target air TA supplied to the dehumidifier 1 based on the information (e.g., information value) detected by the sensor 4. This method also improves responsiveness when the dew point or other parameters fluctuate.

[0042] Figure 7 is a schematic diagram showing the air conditioning system 10 and air conditioning room equipment 40 of the third embodiment. In the embodiment shown in Figure 7, the water splitting device 1C includes a photodecomposition device 1B that photodecomposes the moisture in the target air TA.

[0043] The photodecomposition device 1B, which is a water splitting device 1C, comprises a photocatalyst 1d and a light source 1e. The photocatalyst 1d is a catalyst that decomposes the water in the target air TA upon contact with it. The driving force of the photocatalyst 1d is mainly the energy of the light emitted by the light source 1e. The photocatalyst 1d is, for example, a semiconductor having a band gap that decomposes water, and specifically, at least one of the following: titanium dioxide, tantalum oxide, niobium oxide, etc. By photodecomposition of water, hydrogen and oxygen are usually produced. The light source 1e is a device that irradiates the photocatalyst 1d with light. The photocatalyst 1d has, for example, granular or lumpy form and is assembled and arranged along the longitudinal direction of the light source 1e. The wavelength of the light emitted by the light source 1e is a wavelength that has energy capable of generating photodecomposition on the surface of the photocatalyst 1d. Specifically, the light source 1e emits, for example, visible light, ultraviolet light, etc. The light source 1e is, for example, an LED. By controlling the light source 1e and the amount of light irradiated onto the photocatalyst 1d (the amount of light mentioned above), the water decomposition ability can be controlled.

[0044] In the embodiment shown in Figure 7, the separation mechanism 5 includes an adsorbent 52. The adsorbent 52 is an adsorbent that adsorbs hydrogen generated in the photodegradation device 1B (water splitting device 1C). By including the adsorbent 52, hydrogen generated in the photodegradation device 1B can be separated from the photodegradation device 1B, and the water splitting reaction (the chemical reaction described above), which is the hydrogen generation reaction in the photodegradation device 1B, can be promoted.

[0045] In the example of this disclosure, the adsorbent 52 is installed in a location away from the photodecomposition device 1B and is installed inside the air conditioning room 30 together with the photodecomposition device 1B. Preferably, the adsorbent 52 is installed near the outlet 1b of the photodecomposition device 1B. This makes it difficult for hydrogen to diffuse throughout the air conditioning room 30. In addition, in the photodecomposition device 1B, the water decomposition reaction and the hydrogen generation reaction occur on the same plane of the photocatalyst 1d. Therefore, by providing the adsorbent 52, it is possible to suppress an excessive increase in hydrogen concentration in the air conditioning room 30.

[0046] The adsorbent 52 can be, for example, activated carbon, oxide-based materials (such as zeolite), or precious metals (such as platinum). It is preferable to replace the adsorbent 52 each time before the amount of hydrogen adsorbed becomes saturated, or to degas the adsorbed hydrogen by, for example, vacuum degassing. The hydrogen adsorbed on the adsorbent 52 can be used, for example, as an auxiliary power source for the air conditioning system 10 and the air conditioning room equipment 40 (for example, as part of the power source for the supply device 2).

[0047] Multiple containers (not shown) containing the adsorbent 52 may be installed, and one container used for hydrogen adsorption and the other for hydrogen desorption may be used alternately. This eliminates periods during which hydrogen is not adsorbed.

[0048] Figure 8 is a schematic diagram showing the air conditioning system 10 and air conditioning room equipment 40 of the fourth embodiment. The embodiment shown in Figure 8 is an embodiment that combines the embodiment shown in Figure 6 and the embodiment shown in Figure 7. That is, the photodecomposition device 1B is provided in the flow path 41. In this way, the working space of the air conditioning room 30 can be widened, the diffusion of generated hydrogen into the air conditioning room 30 can be suppressed, and the hydrogen adsorbed by the adsorbent 52 can be effectively utilized.

[0049] Figure 9 is a schematic diagram showing the air conditioning system 10 and air conditioning room equipment 40 of the fifth embodiment. In the embodiment shown in Figure 9, the dehumidifier 1 is equipped with an obstruction mechanism 1f. The obstruction mechanism 1f is a mechanism that obstructs (changes the flow of) at least a portion of the flow of target air TA flowing from the inlet 1a to the outlet 1b so that it flows toward the water splitting device 1C located between the inlet 1a and the outlet 1b. By providing the obstruction mechanism 1f, the "pass-through" of the target air TA from the inlet 1a to the outlet 2b can be suppressed, and the dehumidification of the target air TA can be promoted.

[0050] In the example shown in Figure 9, multiple water splitting units 1C (electrolysis unit 1A in the example of Figure 9) are arranged along the flow of target air TA from inlet 1a to outlet 1b. Specifically, two water splitting units 1C are arranged opposite each other, straddling the flow. That is, the flow of target air TA is formed between the two water splitting units 1C. The obstruction mechanism 1f is positioned between the two opposing water splitting units 1C. Therefore, the flow of target air TA flowing between the two water splitting units 1C is obstructed by the obstruction mechanism 1f. As a result of the obstruction of the flow, the target air TA changes direction and flows towards the water splitting unit 1C to the side. This increases the opportunity for dehumidification in the water splitting unit 1C.

[0051] In the example of this disclosure, the obstruction mechanism 1f comprises a baffle plate 1g and a porous body 1h (either one alone may be included). The porous body 1h is positioned downstream of the baffle plate 1g in the flow of the target air TA. The baffle plate 1g is composed of multiple plates, and two plates are joined together at the upstream end in the flow of the target air TA. The distance between the plates widens towards the downstream side in the flow of the target air TA. As a result, the target air TA flows outwards from the baffle plate 1g. This makes it easier for the target air TA to flow into the water splitting device 1C located outside the baffle plate 1g.

[0052] The porous body 1h is, for example, a massive or granular structure having numerous pores on its surface. Multiple porous bodies 1h aggregate together. The porous body 1h is composed of a material inert to the target air TA and dry air DA, such as silica particles or pumice. The target air TA that flows into the pores of the porous body 1h flows through the pores and is discharged from the pores. Therefore, the flow of the target air TA is disturbed near the porous body 1h. This makes it easier for the target air TA to flow to the water splitting device 1C, which is in a different direction from the outlet 1b, and increases the opportunity for dehumidification in the water splitting device 1C.

[0053] Figure 10 is a schematic diagram showing the air conditioning system 10 and air conditioning room equipment 40 of the sixth embodiment. In the embodiment shown in Figure 10, multiple water splitting devices 1C are arranged inside the dehumidifier 1. In the example shown in Figure 10, each water splitting device 1C has a shape obtained by dividing the size of the water splitting device 1C shown in Figure 8, etc., into multiple parts. Therefore, the dehumidification efficiency (e.g., amount of water decomposed per unit time) of the water splitting device 1C in the embodiment shown in Figure 10 is the same as the dehumidification efficiency (e.g., amount of water decomposed per unit time) of the water splitting device 1C in the embodiment shown in Figure 8.

[0054] The water splitting unit 1C is arranged such that its longitudinal direction aligns with the flow direction of the target air TA. Furthermore, multiple water splitting units 1C are also arranged perpendicular to the flow direction of the target air TA. The target air TA flows between opposing water splitting units 1C. The multiple water splitting units 1C arranged along the flow direction of the target air TA are not arranged in a straight line along the flow, but are arranged alternately with slight offsets (for example, in a zigzag pattern). As a result, the target air TA that has flowed between opposing water splitting units 1C collides with another water splitting unit 1C located downstream of the two water splitting units 1C near the downstream ends of the two water splitting units 1C. In other words, the water splitting units 1C function as baffles. This changes the direction of the flow of the target air TA, making it easier for it to flow to the water splitting units 1C located to the sides of the water splitting units 1C. This increases the opportunity for dehumidification in the water splitting units 1C.

[0055] Figure 11 is a schematic diagram showing the air conditioning system 10 and air conditioning room equipment 40 of the seventh embodiment. In the embodiment shown in Figure 11, the inhibition mechanism 1f comprises a porous body 1h made of the above-mentioned photocatalyst. The porous body 1h in Figure 11 has the same configuration as the porous body 1h (Figure 9), except that the constituent materials are different. Multiple porous bodies 1h are provided and are arranged around a plate-shaped light source 1e that is positioned along the flow direction of the target air TA. That is, the multiple porous bodies 1h are assembled and arranged to the side of the entire area of ​​the light source 1e. As a result, the porous bodies 1h can receive light from the light source 1e.

[0056] Similar to the points described above for the porous body 1h, the flow of the target air TA tends to stagnate around the porous body 1h. Therefore, when the target air TA is in contact with the porous body 1h made of photocatalyst, the flow velocity decreases. This can promote the decomposition reaction of water proceeding on the surface of the porous body 1h.

[0057] In the example shown in Figure 11, multiple light sources 1e are arranged perpendicular to the flow direction of the target air TA, but one light source 1e may be arranged instead. Also, although one light source 1e is arranged in the flow direction of the target air TA, multiple light sources 1e may be arranged instead.

[0058] Figure 12 is a schematic diagram showing the air conditioning system 10 and air conditioning room equipment 40 of the eighth embodiment. In the embodiment shown in Figure 12, a layer 1h1 of multiple porous bodies 1h made of photocatalysts is formed between multiple light sources 1e arranged in the flow direction of the target air TA. Therefore, the target air TA that flows in contact with the multiple porous bodies 1h near the upstream light source 1 crosses the layer 1h1 and flows into the multiple porous bodies 1h near the downstream light source 1e. Since multiple porous bodies 1h are arranged in the layer 1h1, the flow of the target air TA is disturbed when it crosses the layer 1h1. This increases the residence time of the target air TA in the dehumidifier 1 and increases the decomposition frequency. Note that it is not necessary for porous bodies 1h to be arranged in the layer 1h1; any configuration is acceptable as long as it can disturb (slow down) the flow within the layer 1h1.

[0059] Figure 13 is a schematic diagram showing the air conditioning system 10 and air conditioning room equipment 40 of the ninth embodiment. In the embodiment of Figure 13, in addition to the air conditioning room 30 described above, an air conditioning room 31 is provided to which low dew point dry air DA2 is supplied. The low dew point referred to here is a dew point temperature higher than the ultra-low dew point (e.g., -40°C or lower) described above. Specifically, for example, the low dew point is a dew point temperature that is greater than, for example, -40°C and less than or equal to, for example, 0°C. The dry air DA2 exhausted from the air conditioning room 31 is supplied to the air conditioning system 10 as target air TA. The ultra-low dew point dry air DA produced from the dry air DA2 in the air conditioning system 10 is supplied to the air conditioning room 30.

[0060] The air conditioning system 10 further includes a dehumidifier 20 (another dehumidifier). The dehumidifier 20 is installed upstream of the dehumidifier 1 of this disclosure. The dehumidifier 20 produces dry air DA2 and target air TA supplied to the air conditioning room 31 and the dehumidifier 1 from another target air TA2 (an example of a target gas), such as outside air. As described above, the dry air DA2 has a dew point higher than the dew point of the dry air DA produced by the dehumidifier 1. Therefore, the dehumidifier 20 produces dry air DA2 having a dew point higher than the dew point of the dry air DA produced by the dehumidifier 1 of this disclosure.

[0061] The dehumidifier 20 is, for example, a desiccant rotor type dehumidifier that adsorbs moisture and desorbs the adsorbed moisture by heating. By providing the desiccant rotor type dehumidifier 20 in front of the dehumidifier 1, a large amount of moisture can be removed and the dew point can be rapidly lowered. Furthermore, in the stage after the dehumidifier 20, the amount of dehumidification can be precisely controlled using the dehumidifier 1 of this disclosure.

[0062] In the air conditioning room equipment 40 shown in Figure 13, target air TA2, such as outside air, is dehumidified by the dehumidifier 20. This produces dry air DA2 with a low dew point (e.g., above -40°C and below 0°C) and is supplied to the air conditioning room 31. Next, the air in the air conditioning room 31 is supplied to the dehumidifier 1 as target air TA via valve 21. The dehumidifier 1 is also supplied with air from the air conditioning room 30 via valve 22. As a result, the air in the air conditioning room 30 is circulated through the air conditioning system 10. Furthermore, by dehumidifying the intake air from the air conditioning room 31 adjacent to the air conditioning room 30 and the exhaust air from the air conditioning room 30, whose quality has deteriorated, the air quality inside the air conditioning room 30 can be maintained.

[0063] In the embodiment shown in Figure 13, the air inside the air conditioning room 31 is supplied to the air conditioning system 10, but air from the dehumidifier 20 (dry air DA2) may also be supplied directly to the air conditioning system 10.

[0064] Figure 14 is a schematic diagram showing an air conditioning system 10 and air conditioning room equipment 40 of the tenth embodiment. In the embodiment of Figure 14, multiple air conditioning systems 10 are connected in parallel. Therefore, the dehumidifier 1 includes a dehumidifier 1P (first dehumidifier) ​​and a dehumidifier 1Q (second dehumidifier) ​​connected in parallel to the dehumidifier 1P by airflow (gas flow). By providing dehumidifiers 1P and 1Q, the number of dehumidifiers 1 used can be changed according to the overall dehumidification load of the dehumidifier 1, achieving both responsiveness and power saving. In the example of this disclosure, the dehumidifier 1 further includes a dehumidifier 1R connected in parallel to the dehumidifiers 1P and 1Q by airflow (gas flow).

[0065] Of these, dehumidifier 1P produces dry air DA to be supplied to space 30a inside the air-conditioned room 30. An outlet (not shown) for a flow path 41 (specifically flow path 41A) connected to dehumidifier 1P of the air conditioning system 10 is located on the ceiling of space 30a. Dehumidifier 1Q produces dry air DA to be supplied to space 30b inside the air-conditioned room 30. An outlet (not shown) for a flow path 41 (specifically flow path 41B) connected to dehumidifier 1Q of the air conditioning system 10 is located on the ceiling of space 30b. Dehumidifier 1P produces dry air DA to be supplied to space 30c inside the air-conditioned room 30. An outlet (not shown) for a flow path 41 (specifically flow path 41C) connected to dehumidifier 1R of the air conditioning system 10 is located on the ceiling of space 30c.

[0066] Depending on the operation of the air conditioning room 30, the entire interior space of the air conditioning room 30 may not always be used. Furthermore, even when the entire interior space is used, large localized fluctuations in humidity, dew point, etc., may occur. Therefore, by dividing the interior space of the air conditioning room 30 into multiple spaces 30a, 30b, and 30c, and switching the space to which dry air DA is supplied according to the fluctuations in dew point, etc., efficient control can be achieved.

[0067] Figure 15 is a schematic diagram showing an air conditioning system 10 and air conditioning room equipment 40 of the 11th embodiment. In the embodiment shown in Figure 15, a single air conditioning system 10 is equipped with a plurality of dehumidifiers 1P, 1Q, 1R, and 1S. These are connected in parallel by airflow. Each dehumidifier 1P, 1Q, 1R, and 1S is equipped with a fan 2a (inverter controlled) as part of the supply device 2. The air conditioning system 10 is equipped with an adjustment mechanism 2c that adjusts the flow rate of target air TA flowing into and dry air DA flowing out of each dehumidifier 1P, 1Q, 1R, and 1S. The adjustment mechanism 2c is part of the supply device 2, and by providing the adjustment mechanism 2c, the amount of target air TA supplied to each dehumidifier 1P, 1Q, 1R, and 1S can be controlled.

[0068] The adjustment mechanism 2c is, for example, an adjustable opening / closing damper. The amount of fluid flowing into and out of the dehumidifier 1P is controlled by the adjustment mechanism 2c1. The amount of fluid flowing into and out of the dehumidifier 1Q is controlled by the adjustment mechanism 2c2. The amount of fluid flowing into and out of the dehumidifier 1R is controlled by the adjustment mechanism 2c3. The amount of fluid flowing into and out of the dehumidifier 1D is controlled by the adjustment mechanism 2c4.

[0069] The dry air DA produced by each dehumidifier 1P, 1Q, 1R, and 1S may be supplied to the entire interior space of the air conditioning room 30, or to at least one of the spaces 30a, 30b, and 30c into which the interior space is divided. In this way, the dew point temperature can be varied within the interior space of the air conditioning room 30, which has an ultra-low dew point, such as creating spaces with relatively high dew points (e.g., a dew point temperature of -50°C) and spaces with relatively low dew points (e.g., a dew point temperature of -80°C). Furthermore, as shown in the example in Figure 15, the number of dehumidifiers 1 used can be controlled according to the required capacity of the air conditioning room 30. In addition, for example, at least one dehumidifier 1 may not be used under normal circumstances but may be installed as a backup, for example, for use in emergencies.

[0070] Figure 16 is a schematic diagram showing an air conditioning system 10 and air conditioning room equipment 40 of the twelfth embodiment. In the embodiment of Figure 16, there is a flow path 60 that circulates air inside and outside the air conditioning room 30, and a flow path 61 that dehumidifies, for example, outside air as target air TA and supplies it to the air conditioning room 30. Flow paths 60 and 61 each include the air conditioning system 10, etc. Flow paths 60 and 61 are composed of, for example, pipes, ducts, etc.

[0071] An apparatus 50 is provided in the internal space of the air-conditioned room 30. The apparatus 50 is, for example, a manufacturing apparatus for producing any component, a clean bench, etc. Dry air DA from each air conditioning system 10, supplied through the flow paths 60, 61, is supplied to the apparatus 50 via the internal space of the air-conditioned room 30. Thus, the air conditioning system 10 produces dry air DA that is supplied to the internal space of the apparatus 50, which is a local space within the air-conditioned room 30. Then, the apparatus 50 discharges, for example, degraded air to the outside of the air-conditioned room 30.

[0072] In this way, even if the dew point rises locally inside the device 50, the air with the elevated dew point can be exhausted to the outside of the air-conditioned room 30 without being distributed throughout the entire air-conditioned room 30. Furthermore, by circulating the air through the flow path 60, the energy required for air conditioning can be reduced.

[0073] Figure 17 is a schematic diagram showing the air conditioning system 10 and air conditioning room equipment 40 of the 13th embodiment. In the embodiment shown in Figure 17, for example, an ultra-low dew point air conditioning room 30 (for example, below -40°C) is placed inside an air conditioning room 33 (for example, below -40°C) with a general dew point (for example, above -40°C and below 0°C). Air circulates inside and outside the air conditioning room 30 through a flow path 60 equipped with the air conditioning system 10. Specifically, the flow path 60 is a flow path that conditioned (dehumidified) the entire amount of air extracted from the air conditioning room 30 as target air TA, and then returned to the air conditioning room 30 as dry air DA.

[0074] An arbitrary device 51 is installed inside the air-conditioned room 30. The device 51 is, for example, a manufacturing device for producing any component, a clean bench, etc. Therefore, the device 51 is supplied with ultra-low dew point dry air DA produced by the air conditioning system 10. In this way, the air conditioning system 10 produces dry air DA that is supplied to the air-conditioned room 30, which is a local space within the air-conditioned room 33.

[0075] Air is extracted from the air conditioning room 33 through a flow path 62. The flow path 62 is, for example, a pipe or duct. The flow path 62 is equipped with an adjustable on / off damper 45, and the amount of air extracted is controlled by adjusting the on / off damper 45. The extracted air is dehumidified by the air conditioning system 10 as target air TA together with the outside air. The amount of, for example, outside air mixed with the air extracted from the air conditioning room 33 is controlled by adjusting the adjustable on / off damper 43. The dry air DA obtained by dehumidification is supplied to the air conditioning room 33 through a flow path 61. A device 50 is also installed in the air conditioning room 33. The amount of exhaust from the internal space of the device 50 to the outside is controlled by adjusting the adjustable on / off damper 45. The on / off damper 45 is provided in the flow path 63 that connects the internal space of the device 50 to the outside. The flow path 63 is, for example, a pipe or duct.

[0076] The embodiment shown in Figure 17 is suitable, for example, when the exhaust volume of the device 50 fluctuates. For example, when the exhaust volume of the device 50 is small, the opening degree of the on / off damper 45 is controlled to be small. This controls the amount of exhaust through the on / off damper 45 connected to the device 50 to be small. On the other hand, the amount of target air TA, such as outside air, taken into the air conditioning system 10 is also controlled to be small. Specifically, the opening degree of the on / off damper 43 is controlled to be small. This maintains a balance between the supply and exhaust volumes. Conversely, when the exhaust volume of the device 50 is large, the opening degrees of the on / off dampers 43 and 35 are controlled to be large.

[0077] Figure 18 is a schematic diagram showing the air conditioning system 10 and air conditioning room equipment 40 of the 14th embodiment. In the embodiment shown in Figure 18, a device 51 integrated with the air conditioning system 10 is installed in the air conditioning room 30. In the device 51, dry air DA is independently produced by the air conditioning system 10 integrated with the device 51, and the produced dry air DA is supplied to the device 51. In this way, an environment specific to the device 51 can be created inside the air conditioning room 30, regardless of the environment of the air conditioning room 30 in which the device 51 is installed. [Explanation of Symbols]

[0078] 1 Dehumidifier 10. Air conditioning system 1A electrolysis apparatus 1a Inlet 1B Photolysis device 1b Outlet 1C water splitter 1c1 electrode 1c2 electrolyte 1d photocatalyst 1D dehumidifier 1e light source 1f inhibition mechanism 1g baffle 1h Porous body 1h1 layer 1P dehumidifier 1Q dehumidifier 1R dehumidifier 1S dehumidifier 2 Feeding device 20 Dehumidifier 21 valves 22 valves 2b Outlet 2c adjustment mechanism 2c1 Adjustment mechanism 2c2 adjustment mechanism 2c3 adjustment mechanism 2c4 adjustment mechanism 3. Control device 30 Air conditioned room 30a space 30b space 30c space 30d space 31 Air conditioned room 32 Air conditioned room 33 Air conditioned room 35 Opening / Closing Damper 4 sensors 40 Air conditioning room equipment 41 Flow channels 41A channel 41B channel 41C channel 43 Opening / Closing Damper 44 Opening / Closing Damper 45 Opening / Closing Damper 5 Separation mechanism 50 equipment 51 Equipment 52 Adsorbents 55 channels 60 flow channels 61 Flow channels 62 channels 63 channels

Claims

1. A dehumidifier that produces a dry gas having an ultra-low dew point by dehumidifying a target gas, and also includes a water splitting device that chemically decomposes the moisture in the target gas, The dehumidifier comprises a supply device for supplying the target gas. An air conditioning system characterized by the following features.

2. An air conditioning system according to claim 1, The water splitting apparatus is An electrolysis apparatus for electrolyzing the water in the target gas, or A photodegradation apparatus for photodegrading the water in the target gas, The device comprises at least one of the following: An air conditioning system characterized by the following features.

3. An air conditioning system according to claim 2, If the water splitting apparatus is the electrolysis apparatus, the electrolysis apparatus is, A pair of electrodes into which the target gas comes into contact and which produce hydrogen by electrolysis of water, The collection comprises an ion-conductive electrolyte sandwiched between the pair of electrodes. An air conditioning system characterized by the following features.

4. An air conditioning system according to claim 2, If the water splitting apparatus is the photodegradation apparatus, the photodegradation apparatus is A photocatalyst that comes into contact with the target gas and decomposes the moisture in the target gas, The photocatalyst is provided with a light source that irradiates light onto the photocatalyst. An air conditioning system characterized by the following features.

5. An air conditioning system according to claim 1, The dehumidifier and the supply device are The space to which the dry gas is supplied, or A channel connected to the space and used to supply the dry gas to the space, It is installed in at least one of them. An air conditioning system characterized by the following features.

6. An air conditioning system according to claim 1, Furthermore, the dehumidifier includes a control device that controls the amount of the target gas supplied to the dehumidifier based on at least one of the following: information that affects the dew point of the space to which the dry gas is supplied, or information that affects the dew point of the dry gas flowing from outside the space toward the space. An air conditioning system characterized by the following features.

7. An air conditioning system according to claim 1, The system includes a separation mechanism that facilitates the separation of hydrogen generated in the water splitting apparatus from the water splitting apparatus. An air conditioning system characterized by the following features.

8. An air conditioning system according to claim 7, The separation mechanism comprises at least one of the following: a flow path connecting the space in which the water splitting apparatus is installed with the outside of that space, or an adsorbent for adsorbing the generated hydrogen. An air conditioning system characterized by the following features.

9. An air conditioning system according to claim 1, The dehumidifying device further, The inlet into which the target gas flows, The outlet from which the dry gas flows out, An obstruction mechanism that obstructs the flow of the target gas flowing from the inlet to the outlet so as to direct that flow toward the water splitting apparatus located between the inlet and the outlet, Equipped with An air conditioning system characterized by the following features.

10. An air conditioning system according to claim 1, The air conditioning system further includes, in front of the dehumidifier, another dehumidifier that manufactures the target gas supplied to the dehumidifier from another target gas, The aforementioned other dehumidifier produces a dry gas having a dew point higher than the dew point of the dry gas produced by the dehumidifier. An air conditioning system characterized by the following features.

11. An air conditioning system according to claim 10, Another dehumidifying device is a desiccant rotor type dehumidifying device. An air conditioning system characterized by the following features.

12. An air conditioning system according to claim 1, The dehumidifying device comprises a first dehumidifying device and a second dehumidifying device connected in parallel to the first dehumidifying device by gas flow. An air conditioning system characterized by the following features.

13. An air conditioning system according to claim 1, The air conditioning system produces the dry gas that is supplied to local spaces within the air-conditioned room. An air conditioning system characterized by the following features.

14. A supply step of forcibly supplying the target gas to be dehumidified to the dehumidification device, The dehumidification step includes dehumidifying the target gas forcibly supplied in the supply step using a water splitting device that chemically decomposes the water in the target gas. An air conditioning method characterized by the following features.

15. The air conditioning system according to claim 1, The system comprises an air-conditioned room having a space to which dry gas produced by the aforementioned air conditioning system is supplied. An air conditioning room system characterized by the following features.

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