TWI769463B - Dehumidification system and method for reducing space humidity - Google Patents

Abstract

A dehumidification system includes at least one fan filter unit (FFU) and air whose humidity is adjusted by drying. The fan filter unit includes a fan and a filter. The filter corresponds to the fan. The air whose humidity is adjusted by drying is blown to the fan of the fan filter unit, and then enters into an accommodating space larger than the fan filter unit.

Description

Dehumidification system and method for reducing space humidity

The present invention relates to a dehumidification system and a method of reducing the humidity of a space, and more particularly, to a dehumidification system and a method of reducing the humidity of a space using air dried to adjust the humidity.

In an automated production environment, a drying room for storing electronic products is generally built to obtain controlled temperature and humidity, so as to avoid unnecessary malfunction of electronic products due to moisture.

In the current industry, most of the low-temperature ice water machines, chemical dehumidification wheels or special dehumidification wheels are used to achieve the temperature and humidity control of small-scale drying rooms. The most commonly used method is the chemical dehumidification wheel, which uses the moisture absorption characteristics of the dehumidification wheel to absorb the moisture in the air on the runner to obtain the dry air required by the environment. However, whether it is using a dehumidifier wheel or an ice water machine, there are many disadvantages such as high cost, large floor space, long construction time, and high operation and maintenance costs.

In one embodiment, a dehumidification system includes at least one fan filter unit and air dried to adjust humidity. The fan filter unit includes a fan and a filter element. The filter element corresponds to the fan. The air whose humidity has been dried and adjusted is blown toward the fan of the fan filter unit, and then enters into an accommodating space larger than the fan filter unit.

In one embodiment, a method for reducing space humidity includes: providing an accommodating space; introducing dried and humidity-adjusted air into the accommodating space from outside the accommodating space; and passing at least one fan filter unit The dried and humidity-regulated air is dispersed in the accommodating space to reduce the humidity of the accommodating space.

Common reference numbers are used throughout the drawings and the embodiments to refer to the same or similar components. Embodiments of the present invention will be more readily understood from the following detailed description taken in conjunction with the accompanying drawings.

The following disclosure provides many different embodiments or examples for implementing different features of the provided subject matter. Specific examples of components and configurations are described below to illustrate particular aspects of the invention. Of course, these components, values, operations, materials and configurations are examples only and are not intended to be limiting. For example, in the description provided herein, the formation of a first feature over or over a second feature may include embodiments in which the first feature and the second feature are formed or disposed in direct contact, and may also include additional features Embodiments may be formed or positioned between the first and second features such that the first and second features may not be in direct contact. Additionally, the present disclosure may repeat reference numerals and/or letters in the various examples provided herein. This repetition is for the purpose of simplicity and clarity, and does not in itself indicate a relationship between the various embodiments and/or configurations discussed.

FIG. 1 shows a system architecture diagram of a dehumidification system 1 of the present invention. FIG. 2 shows a schematic diagram of the configuration of the main duct, the secondary duct and the fan filter unit of the present invention. Referring to FIG. 1 and FIG. 2, the dehumidification system 1 of the present invention includes an accommodating space 90, a return air wall 60, at least one fan filter unit 10, dried air 20 to adjust humidity, at least one duct 30, and at least one muffler 40 , a gas flow control valve 50 , at least one temperature sensor 65 , at least one humidity sensor 66 , an adsorption dryer 71 , a pressure reducing valve 72 and at least one dry cooler 80 .

The accommodating space 90 defines a storage area 91 and a top area 92 , and the storage area 91 and the top area 92 are separated by a partition 93 . In one embodiment, the accommodating space 90 can be a drying room, a clean room or a mold room. The storage area 91 can be used to store humidity-sensitive items (eg, electronic products or molds). The top area 92 is located above the storage area 91 to provide a space for processing air or distributing air.

The air return wall 60 surrounds the storage area 91 and the top area 92 . The air return wall 60 has an internal air return space 62 and a plurality of air return holes 63 . The inner air return space 62 communicates with the storage area 91 and the top area 92 through the air return holes 63 . In one embodiment, the air return holes 63 may include a plurality of first air return holes 631 and a plurality of second air return holes 632 . The inner air return space 62 can communicate with the storage area 91 through the first air return holes 631 and communicate with the top area 92 through the second air return holes 632 .

The at least one fan filter unit 10 is disposed on the partition plate 93 , and the at least one fan filter unit 10 communicates with the storage area 91 and the top area 92 . In one embodiment, the accommodating space 90 is larger than the fan filter unit 10 . The storage area 91 is larger than the fan filter unit 10 , and the top area 92 is larger than the fan filter unit 10 .

In one embodiment, the at least one fan filter unit 10 includes a fan 11 and a filter element 12 . The fan 11 has an inlet side 112 and an outlet side 114 . The outlet side 114 is opposite to the inlet side 112 . The filter element 12 corresponds to the fan 11 . In one embodiment, the filter element 12 may be disposed on the air outlet side 114 of the fan 11 . In one embodiment, the at least one fan filter unit 10 is located on the partition plate 93 , and the filter element 12 faces the storage area 91 .

The dried air 20 with humidity adjustment is introduced into the accommodating space 90 (eg, the top area 92 ) from the outside of the accommodating space 90 , and blows to the air of the fan filter unit 10 The central position of the fan 11 enters the accommodating space 90 (eg, the storage area 91 ) that is larger than the fan filter unit 10 to lower the accommodating space 90 (eg, the storage area 91 ). 91) humidity. In one embodiment, the dried air 20 with humidity adjustment is blown toward the intake side 112 of the fan 11 , and enters the air through the exhaust side 114 of the fan 11 and the filter element 12 . in the storage area 91 of the accommodating space 90 .

In one embodiment, the at least one fan filter unit 10 may include a plurality of fan filter units 10 . The fan filter units 10 are arranged at intervals, and the air 20 whose humidity has been dried and adjusted can be blown toward the intake side 112 of each of the fans 11 of each of the fan filter units 10, and passes through each of the The air outlet side 114 of the fan 11 and each of the filter elements 12 are dispersed into the storage area 91 of the accommodating space 90 . In addition, since the inner air return space 62 of the air return wall 60 communicates with the storage area 91 through the first air return holes 631 and communicates with the top area 92 through the second air return holes 632 , therefore , the air 20 whose humidity has been dried and adjusted can circulate in the top area 92 , the storage area 91 and the inner air return space 62 of the air return wall 60 .

In one embodiment, the dried and humidity-adjusted air 20 can be derived from a process gas 20 ′, and the process gas 20 ′ can be stored in a gas storage device 25 . In addition, in order to effectively reduce the humidity of the accommodating space 90, the air 20 dried to adjust humidity can be compressed air dried to adjust humidity, and the dew point of the air 20 dried to adjust humidity is -5.26 °C to 0.37 °C.

The at least one duct 30 is used to introduce the dried and humidity-regulated air 20 from the outside of the accommodating space 90 into the accommodating space 90 (eg, the top area 92 ), that is, the accommodating space 90 . The air 20 for drying and adjusting humidity flows in the duct 30 . In one embodiment, the at least one conduit 30 may include a main conduit 31 and a plurality of secondary conduits 32 .

The main duct 31 is introduced into the dried air 20 from the outside of the accommodating space 90 . Therefore, as shown in FIG. 1 , a part of the main duct 31 is disposed in the accommodating space. 90 , and another part thereof is disposed in the top area 92 of the accommodating space 90 .

Referring to FIG. 1 and FIG. 2 again, the secondary ducts 32 are arranged at intervals, and the secondary ducts 32 are connected to the main duct 31 to disperse the air 20 whose humidity has been dried and adjusted. In one embodiment, each of the secondary ducts 32 corresponds to the central position of each of the fans 11 of each of the fan filter units 10 .

The muffler 40 corresponds to the intake side 112 of the fan 11 , and the air 20 dried and adjusted to humidity passes through the muffler 40 to reduce the generation of the air 20 of the dried and adjusted humidity. noise.

In one embodiment, as shown in FIG. 1 , the dehumidification system 1 may include a plurality of mufflers 40 , and each muffler 40 is respectively disposed at the outlet of each of the secondary conduits 32 to reduce the Noise when the air 20 whose humidity is adjusted and dried is blown out from each of the secondary ducts 32 .

The gas flow control valve 50 is disposed on the conduit 30 to adjust the flow rate of the air 20 that has been dried and adjusted for humidity. In one embodiment, the gas flow control valve 50 may be disposed on the main conduit 31 , and the gas flow control valve 50 may be a proportional electric valve.

The temperature sensor 65 and the humidity sensor 66 are disposed in the inner air return space 62 of the air return wall 60 to sense the temperature and humidity of the air 20 whose humidity has been dried and adjusted Variety. In one embodiment, the gas flow control valve 50 can adjust the flow rate of the air 20 whose humidity is adjusted in real time according to the humidity measured by the humidity sensor 66 .

The adsorption dryer 71 is connected to the outlet of the air storage device 25 , and the air 20 dried and adjusted to humidity can pass through the adsorption dryer 71 to absorb the excess in the air 20 dried to adjust the humidity moisture.

The pressure reducing valve 72 is disposed between the gas flow control valve 50 and the adsorption dryer 71 , and the dried air 20 with humidity adjustment can pass through the pressure reducing valve 72 to reduce the drying rate. The air pressure of the humidity-regulated air 20 is adjusted. This is because the air 20 dried to adjust humidity may be compressed air with high pressure, therefore, reducing the air pressure of the air 20 dried to adjust humidity can reduce the noise and noise generated by the air 20 dried to adjust humidity. The objects in the storage area 91 are prevented from being impacted and damaged by the air 20 , which is dried and adjusted to the humidity.

The at least one drying cooler 80 is disposed in the accommodating space 90 to control the temperature of the accommodating space 90 . In one embodiment, the at least one drying cooler 80 can be disposed in the top region 92 of the accommodating space 90, and cold water and hot water can flow through the interior of the at least one drying cooler 80, to control the temperature of the accommodating space 90 . In addition, the at least one drying cooler 80 can adjust the amount of cold water and hot water in it in real time according to the temperature measured by the temperature sensor 65 . In one embodiment, the at least one drying cooler 80 can control the temperature of the accommodating space 90 between 21°C and 27°C.

As shown in FIG. 1 , the air 20 whose humidity is dried and adjusted into the accommodating space 90 from the outside of the accommodating space 90 is dispersed in the accommodating space 90 through the fan filter unit 10 Afterwards, the humidity of the accommodating space 90 can be greatly reduced to below 30%. In addition, the dehumidification system 1 of the present invention has the advantages of low cost, small footprint, short construction time, and low operation and maintenance cost compared with the conventional dehumidification methods such as the dehumidification wheel or the ice water machine, and can be used to replace the conventional dehumidification methods. Dehumidification system.

3-8 illustrate one or more stages of some embodiments of the method of reducing space humidity of the present invention.

Referring to FIG. 3 , step (a) of the method for reducing space humidity of the present invention is to provide an accommodating space 90 . In step (a), the accommodating space 90 defines a storage area 91 and a top area 92 , and the storage area 91 and the top area 92 are separated by a partition 93 . In one embodiment, the accommodating space 90 can be a drying room, a clean room or a mold room. The storage area 91 can be used to store humidity-sensitive items (eg, electronic products or molds).

In addition, as shown in FIG. 3 , the accommodating space 90 can be connected with a return air wall 60 , at least one fan filter unit 10 , process gas 20 ′, at least one conduit 30 , at least one muffler 40 , and a gas flow control The valve 50 , at least one temperature sensor 65 , at least one humidity sensor 66 , an adsorption dryer 71 , a pressure reducing valve 72 and at least one drying cooler 80 constitute a dehumidification system 1 ′. The dehumidification system 1 ′ of FIG. 3 is the same as the dehumidification system 1 of FIG. 1 .

Referring to FIG. 4 to FIG. 7 , step (b) of the method for reducing room humidity of the present invention is to introduce the dried air 20 into the accommodating space 90 from the outside of the accommodating space 90 . As shown in FIG. 4 , the dried and humidity-conditioned air 20 may be derived from a process gas 20 ′, and the dried and humidity-conditioned air 20 may be dried and humidity-conditioned compressed air.

In this step (b), the air 20 that has been dried and adjusted to humidity is set in the at least one conduit 30, and the air 20 that has been dried and adjusted to humidity is passed through the adsorption dryer 71 for adsorption The moisture in the dried humidity-adjusted air 20 is adjusted, and the dew point of the dried humidity-adjusted air 20 is adjusted to -5.26°C to 0.37°C.

In one embodiment, the at least one conduit 30 may include a main conduit 31 and a plurality of secondary conduits 32 . The main duct 31 can guide the dried and humidity-regulated air 20 from the outside of the accommodating space 90 into the top area 92 of the accommodating space 90. Therefore, as shown in FIG. 4 , the A part of the main pipe 31 is disposed outside the accommodating space 90 , and the other part is disposed in the top area 92 of the accommodating space 90 . The secondary ducts 32 are arranged at intervals, and the secondary ducts 32 are connected to the main duct 31 for dispersing the air 20 whose humidity has been dried and adjusted. In one embodiment, each of the secondary ducts 32 corresponds to the central position of each of the fans 11 of each of the fan filter units 10 .

As shown in FIG. 5 , after passing through the adsorption dryer 71 , the air 20 dried to adjust humidity may pass through the pressure reducing valve 72 to reduce the air pressure of the air 20 dried to adjust humidity. This is because the dried and adjusted humidity air 20 may be high-pressure compressed air, and reducing the air pressure of the dried and adjusted humidity air 20 can reduce the noise generated by the dried and adjusted humidity air 20 . In one embodiment, the air pressure of the dried air 20 with adjusted humidity can be reduced to less than or equal to 2 Kg/cm ² .

As shown in FIG. 6 , after passing through the pressure reducing valve 72 , the air 20 dried and adjusted to humidity may pass through the gas flow control valve 50 to adjust the flow rate of the air 20 dried to adjust humidity. In one embodiment, the gas flow control valve 50 can be a proportional electric valve, and the gas flow control valve 50 can adjust the flow rate in real time according to the humidity measured by the humidity sensor 66 . The flow rate of the dry humidity-adjusted air 20 .

As shown in FIG. 7 , after passing through the gas flow control valve 50 , the dried air 20 enters the secondary duct 32 in sequence, passes through the muffler 40 for silencing treatment, and blows to the fan Filter unit 10. In one embodiment, the muffler 40 is disposed at the outlet of the secondary duct 32 to reduce the noise when the air 20 whose humidity is dried and adjusted is blown out from the secondary duct 32 .

Referring to FIG. 8 , step (c) of the method for reducing space humidity of the present invention is to disperse the dried and humidity-adjusted air 20 in the accommodating space 90 through the at least one fan filter unit 10 to reduce the Describe the humidity of the accommodating space 90 . In this step (c), the at least one fan filter unit 10 blows the dried and humidity-adjusted air 20 from the top area 92 to the storage area 91 .

In one embodiment, the at least one fan filter unit 10 may include a fan 11 and a filter element 12 . The fan 11 can blow the dried and humidity-adjusted air 20 toward the storage area 91 . The filter element 12 corresponds to the fan 11 , and the air 20 whose humidity has been dried and adjusted can enter the storage area 91 through the filter element 12 . In one embodiment, the filter element 12 may be disposed on the air outlet side 114 of the fan 11 .

Referring again to FIG. 1 , the dried air 20 entering the storage area 91 can further enter the inner air return space 62 through the first air return holes 631 of the air return wall 60 , and pass through the air return space 62 . The second air return holes 632 enter the top area 92 . That is to say, the air 20 whose humidity has been dried and adjusted can circulate in the top area 92 , the storage area 91 and the inner air return space 62 of the air return wall 60 .

In addition, since the humidity sensor 66 is disposed in the inner air return space 62 of the air return wall 60 , the humidity change of the accommodating space 90 can be obtained in real time, and the humidity sensor The humidity measured by the device 66 can be fed back to the gas flow control valve 50 in real time, so that the gas flow control valve 50 can adjust the flow rate of the dried air 20 according to the humidity of the accommodating space 90 , and further reduce the humidity of the accommodating space 90 to below 30%. In addition, the temperature sensor 65 disposed in the inner air return space 62 of the air return wall 60 can also obtain the temperature change of the accommodating space 90 in real time, and the temperature sensor 65 The measured temperature can be fed back to the at least one drying cooler 80 in real time, so that the at least one drying cooler 80 can adjust the amount of cold water and hot water inside the at least one drying cooler 80 according to the temperature of the accommodating space 90, and then The temperature of the accommodating space 90 is controlled within a required temperature range (eg, between 21°C and 27°C).

The above-mentioned embodiments are only to illustrate the principles and effects of the present invention, but not to limit the present invention. Therefore, those skilled in the art can modify and change the above-mentioned embodiments without departing from the spirit of the present invention. The scope of the rights of the present invention should be listed in the scope of the patent application described later.

1: Dehumidification system 1': Dehumidification system 10: Fan filter unit 11: Fan 12: Filters 20: Dry air to adjust humidity 20': Process gas 25: Gas storage device 30: Catheter 31: Main tube 32: Secondary catheter 40: muffler 50: Gas flow control valve 60: Air return wall 62: Internal return air space 63: return air hole 65: temperature sensor 66: Humidity sensor 71: Adsorption dryer 72: Pressure reducing valve 80: Dry cooler 90: accommodating space 91: Storage area 92: Top area 93: Separator 112: Intake side 114: Outlet side 631: First return air hole 632: Second return air hole

Aspects of some embodiments of the invention will be readily understood from the following detailed description when read in conjunction with the accompanying drawings. It should be noted that the various structures may not be drawn to scale and that the dimensions of the various structures may be arbitrarily increased or decreased for clarity of discussion.

FIG. 1 shows a system architecture diagram of the dehumidification system of the present invention.

FIG. 2 shows a schematic diagram of the configuration of the main duct, the secondary duct and the fan filter unit of the present invention.

Figure 3 shows one or more stages of some embodiments of the method of reducing space humidity of the present invention.

Figure 4 shows one or more stages of some embodiments of the method of reducing space humidity of the present invention.

Figure 5 shows one or more stages of some embodiments of the method of reducing space humidity of the present invention.

Figure 6 shows one or more stages of some embodiments of the method of reducing space humidity of the present invention.

Figure 7 shows one or more stages of some embodiments of the method of reducing space humidity of the present invention.

Figure 8 shows one or more stages of some embodiments of the method of reducing space humidity of the present invention.

1: Dehumidification system

10: Fan filter unit

11: Fan

12: Filters

20: Dry air to adjust humidity

20': Process gas

25: Gas storage device

30: Catheter

31: Main pipe

32: Secondary catheter

40: muffler

50: Gas flow control valve

60: Air return wall

62: Internal return air space

63: return air hole

65: temperature sensor

66: Humidity sensor

71: Adsorption dryer

72: Pressure reducing valve

80: Dry cooler

90: accommodating space

91: Storage area

92: Top area

93: Separator

112: Intake side

114: Outlet side

631: First return air hole

632: Second return air hole

Claims (28)

A dehumidification system, comprising: at least one fan filter unit, including: a fan; and a filter element corresponding to the fan; the air whose humidity has been dried and adjusted is blown toward the fan of the fan filter unit, and then enters the fan filter unit. The fan filter unit is in a large accommodating space, and the air whose humidity has been dried and adjusted comes from the process gas, the accommodating space defines a storage area and a top area, the storage area and the top area Separated by a partition, the at least one fan filter unit is arranged on the partition and communicates with the storage area and the top area; a return air wall surrounds the storage area and the top area, And an internal air return space of the air return wall is connected to the storage area and the top area; and at least one temperature sensor and at least one humidity sensor, the temperature sensor and the humidity sensor The device is arranged in the inner air return space of the air return wall. The dehumidification system of claim 1, wherein the fan has an air intake side and an air outlet side, the air outlet side is opposite to the air intake side, and the filter element is disposed on the air outlet side of the fan, so The dried, humidity-adjusted air is blown toward the intake side of the fan. The dehumidification system according to claim 1, further comprising at least one muffler, the muffler corresponds to the intake side of the fan, and the dried and humidity-adjusted air passes through the muffler. The dehumidification system of claim 1, wherein the at least one fan filter unit includes a plurality of fan filter units, the fan filter units are arranged at intervals, and the dried and humidity-adjusted air is blown toward each of the fan filter units. each of the fans. The dehumidification system of claim 1, wherein the dew point of the air dried to adjust the humidity is -5.26°C to 0.37°C. The dehumidification system according to claim 1, wherein the air whose humidity is conditioned by drying is compressed air whose humidity is conditioned by drying. The dehumidification system of claim 1, wherein the dried and humidity-conditioned air is blown toward a central location of the fan. The dehumidification system according to claim 1, further comprising at least one conduit, and the air whose humidity has been dried and adjusted is arranged in the conduit. The dehumidification system of claim 8, wherein the at least one conduit comprises a main conduit and a plurality of secondary conduits, the main conduit introduces the dried and humidity-regulated air, the sub conduits are arranged at intervals, and the sub conduits are arranged at intervals. A conduit communicates with the main conduit to disperse the dried and humidity-conditioned air. The dehumidification system of claim 9, wherein the at least one fan filter unit includes a plurality of fans A fan filter unit, the fan filter units are arranged at intervals, and each of the secondary ducts respectively corresponds to the center position of each of the fans of each of the fan filter units. The dehumidification system according to claim 9, further comprising a plurality of mufflers, each of the mufflers is respectively disposed at the outlet of each of the secondary conduits. The dehumidification system of claim 8, further comprising a gas flow control valve, the gas flow control valve is arranged on the conduit, and is used to adjust the flow rate of the dried and humidity-adjusted air. The dehumidification system of claim 12, wherein the gas flow control valve is a proportional electric valve. The dehumidification system according to claim 1, further comprising at least one drying cooler, and the at least one drying cooler is arranged in the top area. The dehumidification system of claim 1, wherein the air return wall has a plurality of air return holes, and the internal air return space communicates with the storage area and the top area through the air return holes. The dehumidification system of claim 1 , wherein the dried and humidity-regulated air circulates in the top area, the storage area and the inner air return space of the air return wall. The dehumidification system according to claim 1, further comprising an adsorption dryer, and the air whose humidity has been dried and adjusted is passed through the adsorption dryer to adsorb the air in the air that has been dried and adjusted in humidity. excess moisture. The dehumidification system as claimed in claim 1 further comprises a pressure reducing valve, and the air whose humidity has been dried and adjusted passes through the pressure reducing valve, so as to reduce the air pressure of the air whose humidity has been dried and adjusted. The dehumidification system of claim 18 further comprises a gas flow control valve and an adsorption dryer, and the pressure reducing valve is arranged between the gas flow control valve and the adsorption dryer. A method for reducing space humidity, comprising: (a) providing an accommodating space, a return air wall, at least one temperature sensor and at least one humidity sensor, the accommodating space defining a storage area and a top area , the storage area and the top area are separated by a partition, the air return wall surrounds the storage area and the top area, and an internal air return space of the air return wall connects the storage area and the top area. In the top area, the temperature sensor and the humidity sensor are arranged in the inner air return space of the air air return wall; (b) the dried and adjusted humidity is introduced from the outside of the accommodating space and (c) dispersing the dried and humidity-adjusted air in the accommodating space through at least one fan filter unit , in order to reduce the humidity of the accommodating space, the at least one fan filter unit is arranged on the partition plate and communicates with the storage area and the top area. The method for reducing room humidity of claim 20, wherein in the step (b), the dried and humidity-adjusted air is introduced into the top area; and in the step (c), the at least A fan filter unit blows the dried, humidity-conditioned air from the top area to the storage area. The method for reducing space humidity according to claim 21, wherein in the step (c), the at least one fan filter unit comprises a fan and a filter element, and the fan blows the dried and humidity-regulated air toward the In the storage area, the filter element corresponds to the fan, and the dried and humidity-regulated air enters the storage area through the filter element. The method for reducing space humidity according to claim 20, wherein in the step (b), the dew point of the air whose humidity is adjusted by drying is -5.26°C to 0.37°C. The method for reducing space humidity as claimed in claim 20, wherein the step (b) comprises: (b1) adsorbing moisture in the air whose humidity has been dried and adjusted; (b2) reducing the air pressure of the air whose humidity has been dried and adjusted; and (b3) adjusting the flow rate of the dried and humidity-adjusted air. The method for reducing space humidity of claim 24, wherein in the step (b2), the air pressure system of the air whose humidity is adjusted by drying is reduced to less than or equal to 2Kg/cm ² . The method for reducing space humidity as claimed in claim 24, wherein after the step (b3), the method for reducing space humidity further comprises: (b4) performing a noise reduction treatment on the air whose humidity has been dried and adjusted. The method for reducing space humidity according to claim 20, wherein in the step (c), the humidity of the accommodating space is reduced to below 30% by the air whose humidity is adjusted by drying. The method for reducing space humidity according to claim 20, wherein after step (c), the method for reducing space humidity further comprises: (d) adjusting the dried and humidity-adjusted air according to the humidity of the accommodating space traffic.

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