JP2016023851A - Precise temperature and humidity adjustment method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a precise temperature and humidity adjustment method excellent in energy saving property.SOLUTION: In a precise temperature and humidity adjustment method, in an outside air and inside air confluence duct OA+RA1 that connects an inside air circulation duct RA connected to an air-conditioned room and an outside air intake duct OA to make outside air confluent to inside air, an evaporator 12, a condenser 15 and a blower 19 are installed; a humidifier 30 is installed in an air supply duct SA connected to the downstream side of the blower 19 and supplying air to the air-conditioned room; a compressor 16 and a heating and cooling device 20 are connected to the evaporator 13 and the condenser 14; and the compressor 16 is controlled based on the temperature of the air-conditioned room. In the precise temperature and humidity adjustment method, the blower 19 is controlled based on the humidity of the air-conditioned room.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a precise temperature and humidity adjustment method for a room to be air-conditioned.

A conventional temperature and humidity control device for a constant temperature and humidity chamber adjusts the temperature and humidity of the chamber by a method in which the processing air is supercooled and dehumidified with a cooling coil and then reheated with an electric heater and humidified with an electrode-type steam humidifier. In an air heat source type heat pump refrigerator that is a cold heat source of this apparatus, the compressor is often operated at a constant rotation speed (hereinafter referred to as a conventional method).
In winter and the like, an energy saving method for stopping dehumidification (operation of the compressor) in the cooling coil is used.

In recent years, the following techniques 1) to 3) are available as methods or apparatuses for energy saving.
1) A method of adjusting the compressor rotational speed of the refrigerator based on the apparatus outlet temperature (see Patent Document 1).
2) A method of determining the dew point temperature target value at the outlet of the apparatus based on the cooling load of the space and the sensible heat ratio SHF, and adjusting the refrigerator compressor rotation speed and the fan rotation speed (see Patent Document 2).
3) An apparatus that reheats and humidifies a refrigerant reheat and a spray-type humidifier without using an electric heater or an electrode-type steam humidifier (see Patent Document 3).

Japanese Patent No. 2599632 (Japanese Patent Laid-Open No. 3-168556) Japanese Patent No. 3873218 (Japanese Patent Laid-Open No. 2005-140467) JP 2013-122350 A

  In the conventional method described above, since the compressor rotation speed of the refrigerator is constant, the air that is necessary for supercooling and dehumidifying the treated air more than necessary in the intermediate and summer seasons, as well as ensuring the indoor temperature distribution and cleanliness. Since the entire circulation volume is supercooled and dehumidified, the electric power required for reheating and humidification by electric heaters with low energy efficiency, such as electric heaters and electrode-type steam humidifiers, is very large, and the heating and humidifying power in winter is also large. There is.

On the other hand, the methods and apparatuses of Patent Documents 1 to 3 described above have the following problems.
First, although the method of patent document 1 reduces the humidification electric power of summer or an intermediate period, the problem that the reheating electric power of the intermediate period by an electric heater and the heating humidification electric power of a winter season remains large.
Further, the method of Patent Document 2 has a problem of indoor temperature distribution and cleanliness because the cooling air heat load in the room is small and the processing air volume decreases when the latent heat load is large. The problem of the inefficiency of the electric heater similar to the method remains.
In addition, the apparatus of Patent Document 3 is reduced in electric power by variable control of refrigerant reheat and compressor rotation speed, but since the processing air volume is constant, there remains room for reduction of reheat humidification and winter heating and humidification electric power. .

  The subject of this invention is providing the precise temperature / humidity adjustment method excellent in energy-saving property.

In order to solve the above problems, the invention described in claim 1
An evaporator, a condenser, and a blower are installed in the outside air / inside air merging duct that connects the inside air circulation duct and the outside air intake duct connected to the air-conditioning target room and joins the outside air to the inside air, and is connected to the downstream side of the blower. Installing a humidifier in the air supply duct that supplies air to the air-conditioned room,
In a method of connecting a compressor and a heating / cooling device to the evaporator and the condenser, and controlling the compressor based on the temperature of the air-conditioning target room,
The blower is controlled based on the humidity of the air-conditioned room.

The invention described in claim 2
The precise temperature and humidity adjustment method according to claim 1,
The refrigerant pipe is provided with a first evaporator, a second evaporator, a first condenser, a second condenser, the compressor, a proportional valve, and a pair of expansion valves;
The first evaporator and the second evaporator are provided in series, the first condenser and the second condenser are provided in series,
Providing the compressor between the first evaporator and the second evaporator and between the first condenser and the second condenser;
Providing the proportional valve between the compressor and the first condenser; providing the proportional valve between the compressor and the second condenser;
Providing the expansion valve between the first condenser and the first evaporator, and providing the expansion valve between the second condenser and the second evaporator;
The first evaporator and the second condenser are provided in the outside-air-air merging duct, and the blower is provided on the downstream side of the second condenser.

The invention according to claim 3
An evaporator, an electric heater, and a blower are installed in the outside air / inside air merging duct that connects the inside air circulation duct and the outside air intake duct connected to the air-conditioning target room and joins the outside air to the inside air, and is connected to the downstream side of the blower. Installing a humidifier in the air supply duct that supplies air to the air-conditioned room,
In a method of connecting a heat pump refrigerator to the evaporator and controlling the electric heater based on the temperature of the air-conditioning target room,
The blower is controlled based on the humidity of the air-conditioned room.

The invention according to claim 4
It is the precise temperature / humidity adjusting method according to any one of claims 1 to 3,
The number of rotations of the blower is controlled based on the humidity.

The invention described in claim 5
The precise temperature and humidity adjustment method according to any one of claims 1 to 4,
The compressor is controlled based on the humidity.

The invention described in claim 6
It is the precise temperature / humidity adjustment method according to claim 5,
The number of rotations of the compressor is controlled based on the humidity.

The invention described in claim 7
It is the precise temperature / humidity adjusting method according to any one of claims 1 to 6,
A second blower is provided in a branch duct from the inside air circulation duct.

The invention according to claim 8 provides:
A precision temperature and humidity adjustment method according to any one of claims 1 to 7,
A constant air volume device is provided in the outside air intake duct.

  ADVANTAGE OF THE INVENTION According to this invention, the precise temperature / humidity adjustment method excellent in energy saving property can be provided.

It is a schematic diagram showing the composition of one embodiment of the precise temperature and humidity adjusting device to which the present invention is applied. It is a flowchart which shows the example of control of the precise temperature / humidity adjustment method of this invention. It is a graph which shows evaluation of the temperature-humidity (when a compressor output is fixed) in the apparatus by the conventional system and this invention system. It is a graph which shows the comparison of the breakdown of the amount of sensible heat processing of the air-conditioning sensible heat load and each apparatus in the conditions of FIG. It is a graph which shows the comparison of the breakdown of the air-conditioning latent-heat load in the conditions of FIG. 3, and the latent heat processing amount of each apparatus. It is a graph which shows evaluation of the temperature and humidity in a device (when processing air volume is fixed) in each system. It is a graph which shows the comparison of the breakdown of the amount of sensible heat processing of the air-conditioning sensible heat load and each apparatus in the conditions of FIG. It is a graph which shows the comparison of the breakdown of the air-conditioning latent-heat load in the conditions of FIG. 6, and the latent heat processing amount of each apparatus. FIG. 9 is a schematic diagram showing a configuration of an example of a precision temperature and humidity adjusting device in which a part of the present invention is applied to a conventional method, showing Embodiment 2.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to the drawings.

(Overview)
Save energy by using a precision temperature control device consisting of a conventional compressor or a compressor with a refrigerant reheat structure, two pairs of evaporators, a condenser, a pair of expansion valves, a proportional valve, a blower, and a temperature sensor. A precise temperature and humidity adjustment method suitable for an excellent temperature and humidity chamber is provided.

(Embodiment 1)
FIG. 1 shows the configuration of an embodiment of a precision temperature / humidity adjusting device to which the present invention is applied. 10 is a precision temperature adjusting device, 20 is a heating / cooling device (cooling / heating machine), 30 is a humidifier, and 40 is a first. 2 blowers, 50 is a constant air volume device, 60 is a control unit, OA is an outside air intake duct, RA is an inside air circulation duct, and SA is an air supply duct.

  FIG. 1 shows a refrigerant reheat type precision temperature / humidity adjusting device, which includes a precision temperature adjusting device 10, a heating / cooling device (cooling / heating water machine) 20, and a humidifier as shown in the figure. 30, a second blower 40, a constant air volume device 50, and an automatic control unit including an adjustment unit 60.

  The precision temperature control apparatus 10 is a water-cooled type that reheats the refrigerant, and includes a first evaporator 12, a second evaporator 13, a first condenser 14, a second condenser 15, a compressor 16, and a refrigerant pipe 11. A pair of proportional valves 17 and a pair of expansion valves 18, and a first blower 19 that supplies air to an air supply duct SA to an air-conditioning target chamber (a constant temperature and humidity chamber).

Specifically, in the refrigerant pipe 11, the first evaporator 12 and the first condenser 14 are arranged in series, and the second evaporator 13 and the second condenser 15 are arranged in series.
A compressor 16 is disposed on the refrigerant circuit of the first evaporator 12 and the first condenser 14, the second evaporator 13 and the second condenser 15.
A proportional valve 17 is disposed between the compressor 16 and the first condenser 14, and a proportional valve 17 is also disposed between the compressor 16 and the second condenser 15.
An expansion valve 18 is disposed between the first condenser 14 and the first evaporator 12, and an expansion valve 18 is disposed between the second condenser 15 and the second evaporator 13.

And the 1st evaporator 12 and the 2nd condenser 15 are installed in outside air inside air confluence | merging duct OA + RA1 which connects outside air intake duct OA and inside air circulation duct RA1, and joins outside air to inside air.
Furthermore, the 1st air blower 19 is installed in the downstream of the 2nd condenser 15 by the external air inside air confluence | merging duct OA + RA1, and is connected to air supply duct SA.

The chiller / heater 20 as a heating / cooling device for exhaust heat is an air heat source heat pump system, and the water pipe 21 is connected to the precision temperature control device 10.
That is, the second evaporator 13 and the first condenser 14 are installed in the water pipe 21.

  The humidifier 30 is an electrode-type steam humidifier and is installed in the air supply duct SA on the downstream side of the first blower 19.

  The second blower 40 is a constant air volume type and is installed in the inside air circulation duct RA2.

  The constant air volume device 50 is installed in the outside air intake duct OA.

The adjusting unit 60 adjusts the electrode-type steam humidifier 30 and the rotation speed of the first blower 19 of the water-cooled precision temperature controller 10 based on the detection signal from the temperature / humidity sensor T / H in the constant temperature and humidity chamber. And the minimum rotation speed adjustment of the compressor 16 is performed.
Specifically, the rotation speed of the compressor 16 and the proportional valve 17 are controlled based on the temperature of the constant temperature and humidity chamber, and the adjustment of the electrode-type steam humidifier 30 is controlled based on the humidity of the constant temperature and humidity chamber. The rotation speed adjustment of the first blower 19 and the minimum rotation speed adjustment of the compressor 16 are performed.

  Next, the operation of the water-cooled precision temperature control device 10 will be described.

  The high-temperature refrigerant compressed and heated by the compressor 16 is distributed to the first condenser 14 and the second condenser 15 through the proportional valves 17.

  The distributed high-temperature refrigerant is cooled by the first condenser 14 and then expanded adiabatically by the expansion valve 18 to be further cooled. The cooled refrigerant is deprived of heat of evaporation by the first evaporator 12 and heated, and then returned to the compressor 16.

  The distributed high-temperature refrigerant is cooled by the second condenser 15 and then expanded adiabatically by the expansion valve 18 and further cooled. The cooled refrigerant is deprived of heat of evaporation by the second evaporator 13 and heated, and then returned to the compressor 16.

  And the 2nd evaporator 13 and the 1st condenser 14 are incorporated in the water piping 21 of the cold / hot water machine 20 by an air heat source heat pump, and are each heat-exchanged effectively by the cold / hot water.

Next, based on the control flow of FIG. 2, the change in the rotation speed of the first blower 19 and the change in the lower limit rotation speed of the compressor 16 of the water-cooled precise temperature control apparatus 10 will be described.
That is, the air volume control of the first blower 19 and the minimum output control of the compressor 16 are performed.

As shown in FIG. 2, first, in step S1, it is monitored whether or not the air conditioner is in operation.
Then, if the air conditioner is in operation, the process proceeds to the next step S2, and if not in the air conditioner, the air volume control of the first blower 19 is stopped in another step S10, and the rotation speed is set to the standard. After the minimum output control of the compressor 16 is stopped and the rotational speed adjustment set value is set to standard, the process returns to step S1.

  In the next step S2, it is determined whether or not the dehumidification request flag is ON. If the dehumidification request flag is ON, the process proceeds to the next step S3. If the dehumidification request flag is not ON, the process of step S10 is performed and the process of step S1 is performed. Return to.

  In the next step S3, it is determined whether or not the rotation speed lower limit set value of the compressor 16 is the minimum value. If it is the minimum value, the process proceeds to step S4, and if not, the process proceeds to another step S12.

  In the next step S4, the air volume control of the first blower 19 is started, and in the next step S5, it is determined whether or not the relative humidity deviation is 0. If the relative humidity deviation is 0, the process proceeds to the next step S6. If the relative humidity deviation is not zero, the process proceeds to another step S7.

  In the next step S6, the rotation speed of the first blower 19 is maintained, and the process proceeds to the next step S11.

  In another step S7, it is determined whether or not the relative humidity deviation is less than 0. If the relative humidity deviation is less than 0, the rotational speed of the first blower 19 is increased in step S8. In S9, the rotational speed of the first blower 19 is decreased, and the process proceeds to Step S11.

  The above is the air volume control of the first blower 19.

In the control flow of FIG. 2, the dehumidification request flag in step S2 is set corresponding to a period (for example, 5 to 10 months) in which dehumidification is necessary. In addition, the ambient temperature and humidity may be measured and judged.
The relative humidity deviation in steps S5 and S6 is obtained by subtracting the room set relative humidity from the current room relative humidity, that is, relative humidity deviation = (current room relative humidity−room set relative humidity).

FIG. 3 shows an example of the temperature and humidity in the apparatus of the conventional method under the condition where the sensible heat ratio is as low as 0.6 (sensible heat 0.6 kW, latent heat 0.4 kW) in the intermediate period, etc. An example of the temperature and humidity in the apparatus with and without air volume control (this system) of the first blower 19 of the precision temperature control apparatus 10 is shown.
The output of the refrigerator is 4.3 kW fixed (cooling) in the conventional method as an output capable of processing the summer peak (outside air: 33.5 ° C., 20.3 g / kg (DA), through-wall load: 2.8 kW), In this method, an output with a capacity of 4.5 kW (cooling + heating) was optimally controlled under the conditions of FIG. 3 (1.4 kW), and the same output was obtained with or without air volume control of the first blower 19. At this time, the required outlet temperature of the apparatus is 15 to 19 ° C. and the humidity is 8.7 g / kg (DA) due to the difference in the processing air volume.

In the conventional method, the compressor rotation speed is always the rated output, so it is subcooled and dehumidified below the required temperature and humidity, and reheated and humidified with an electric heater and electrode-type steam humidifier with low equipment efficiency (○ in the figure) .
Further, even in the precision temperature and humidity control device, when the air volume control of the first blower 19 is not performed (600 m ³ / h constant), the required outlet temperature can be achieved, but the required outlet humidity cannot be achieved (（in the figure).

On the other hand, by reducing the processing air volume to 300 m ³ / h by controlling the air volume of the first blower 19, the required outlet humidity can be achieved even with the same output (▲ in the figure).

  4 and 5 show a breakdown of the amount of heat processed by each device under the above conditions.

  In the conventional method, heat of 9.5 times (5.7 kW) sensible heat and 3.7 times (1.7 kW) of latent heat is processed with respect to the air conditioning load. In the temperature control apparatus 10, the air conditioning load can be processed with a minimum amount of heat.

  After the air volume control of the first blower 19 as described above, as shown in the control flow of FIG. 2, it is determined in step S11 whether or not the rotation speed of the first blower 19 is a lower limit value. Proceeding to step S12, the process proceeds to the minimum output control of the compressor 16, and if not the lower limit value, the process returns to step S1.

  That is, in the next step 12, the minimum output control of the compressor 16 is started, and in the next step S13, it is determined whether or not the relative humidity deviation is 0. If the relative humidity deviation is 0, the process proceeds to the next step S14. If the relative humidity deviation is not zero, the process proceeds to another step S15.

  In the next step S14, the lower limit set value of the rotation speed of the compressor 16 is maintained, and the process returns to step S1.

  In another step S15, it is determined whether or not the relative humidity deviation is less than 0. If the relative humidity deviation is not less than 0, the lower limit set value of the rotation speed of the compressor 16 is increased in step S16, and the relative humidity deviation is less than 0. If there is, the lower limit set value of the rotational speed of the compressor 16 is lowered in step S17, and the process returns to step S1.

  The above is the minimum output control of the compressor 16.

  FIG. 6 shows an example of the internal temperature and humidity of the compressor 16 under the condition (sensible heat 0.6 kW, latent heat 0.9 kW) where only the dehumidifying load is increased and the sensible heat ratio is lowered to 0.4. Indicated by the presence or absence of minimum output control (this method)

  Although it is not possible to achieve the required outlet humidity (6.9 g / kg (DA)) only by reducing the processing air volume by controlling the air volume of the first blower 19, the output of the compressor 16 is increased from 1.4 kW to 2. By increasing the pressure to 5 kW, the required outlet humidity can be achieved (（in the figure).

  FIG. 7 and FIG. 8 show the breakdown of the amount of heat processed by each of the above devices.

  As shown in the figure, the apparatus latent heat treatment amount reaches the air conditioning latent heat load (0.9 kW) by the minimum output control of the compressor 16, and the precise temperature and humidity of the room can be adjusted with a small amount of power.

Furthermore, since the 2nd air blower 40 and the constant air volume apparatus 50 are provided like illustration, the following effect | action is acquired.
That is, the second blower 40 acts to ensure indoor temperature and humidity distribution and indoor cleanliness.
And the constant air volume apparatus 50 has the effect | action which hold | maintains a fixed required ventilation volume, even if the rotation speed of the 1st air blower 19 is changed.

  Furthermore, the refrigerant reheat type precision temperature and humidity control device can reduce the heating power in winter, and the humidification power can be reduced when the vaporization method or the water spray method is used.

As described above, according to the precise temperature and humidity adjustment method of the constant temperature and humidity chamber of the embodiment, the first evaporator 12, the second condenser 15, and the first blower 19 are installed in the outside air / inside air confluence duct OA + RA 1, An electrode-type steam humidifier 30 is installed in the air supply duct SA connected to the downstream side of the first blower 19, and the compressor 16 and the cold / hot water machine 20 are connected to the second evaporator 13 and the first condenser 14. In the method of controlling the compressor 16 and the proportional valve 17 based on the temperature of the constant temperature and humidity chamber, the first blower 19 and the compressor 16 are controlled based on the humidity of the constant temperature and humidity chamber.
Therefore, the advantage of excellent energy saving can be obtained.

(Modification)
In the embodiment, the air heat source heat pump type chiller / heater is used. However, in addition to such a water-cooled exhaust heat structure, the first condenser and the second evaporation are provided in the air passage of the third blower that sucks outside air. You may use the exhaust-type heat exhaust structure which connects a vessel.
That is, regardless of the method of exhaust heat to the outdoors, whether it is a water cooling type or an air type, a heating / cooling device for exhaust heat may be used.
In the embodiment, a pair of proportional valves is used, but a single three-way proportional valve may be used.

  Here, even in the conventional precision temperature and humidity control device, the output of the refrigerator compressor and the minimum output can be varied, and by applying the air volume control of the blower, the performance is inferior to the method of Embodiment 1, but the outside air dehumidification load It is possible to save power in the middle and summer seasons.

(Embodiment 2)
FIG. 9 shows a second embodiment as a modified example. As in the first embodiment described above, 19 is a first blower, 30 is a humidifier, 40 is a second blower, 50 is a constant air volume device, and 60 is an adjustment unit. 70 is a refrigerator, 71 is a compressor, 80 is an air conditioning unit, 81 is an evaporator, and 82 is an electric heater.

  That is, FIG. 9 shows a configuration of an example of a precision temperature / humidity adjustment device in which a part of the present invention is applied to the conventional method, and is shown in place of the precision temperature adjustment device 10 and the chiller / heater 20 of the first embodiment. Thus, the refrigerator 70 and the air conditioning unit 80 are provided.

The refrigerator 70 is an air heat source heat pump system and includes a compressor 71.
In the air conditioning unit 80, an evaporator 81 and an electric heater 82 are provided in series with the processing air, and the first blower 19 is provided.
Further, the compressor 71 of the refrigerator 70 is connected to the evaporator 81 in the air conditioning unit 80.

  In the air conditioning unit 80, heat exchange by the evaporator 81 and the electric heater 82 is effectively performed.

  The adjusting unit 60 controls the electric heater 82 based on the temperature of the constant temperature and humidity chamber, and controls the rotation speed of the first blower 19 and the rotation of the compressor 71 based on the humidity of the constant temperature and humidity chamber. Number and minimum speed control.

  Even with a precision temperature and humidity adjusting device having a configuration in which a part of the present invention is applied to such a conventional method, the adjusting unit 60 controls the electric heater 82 based on the temperature of the temperature and humidity chamber, and also controls the temperature and humidity. By performing the rotational speed control of the first blower 19 and the rotational speed and the minimum rotational speed control of the compressor 71 based on the humidity of the wet chamber, as in the first embodiment, the advantage of excellent energy saving can be obtained.

  And as shown in the figure, if the second blower 40 and the constant air volume device 50 are added, the same action as in the first embodiment described above can be obtained, which is even better.

(Other variations)
In the above embodiment, although it was set as the precise temperature / humidity adjustment apparatus for constant temperature and humidity chambers, this invention is not limited to this, You may be for general rooms.
Moreover, in embodiment, although the electrode type steam humidifier was used, not only this but another humidifier may be used.
Furthermore, it is needless to say that other specific detailed structures can be appropriately changed.

DESCRIPTION OF SYMBOLS 10 Precise temperature control apparatus 11 Refrigerant pipe | tube 12 1st evaporator 13 2nd evaporator 14 1st condenser 15 2nd condenser 16 Compressor 17 Proportional valve 18 Expansion valve 19 1st blower 20 Heating and cooling apparatus 21 Water piping 30 Humidification Unit 40 Second blower 50 Constant air volume device 60 Control unit 70 Refrigerator 71 Compressor 80 Air conditioning unit 81 Evaporator 82 Electric heater

Claims (8)

An evaporator, a condenser, and a blower are installed in the outside air / inside air merging duct that connects the inside air circulation duct and the outside air intake duct connected to the air-conditioning target room and joins the outside air to the inside air, and is connected to the downstream side of the blower. Installing a humidifier in the air supply duct that supplies air to the air-conditioned room,
In a method of connecting a compressor and a heating / cooling device to the evaporator and the condenser, and controlling the compressor based on the temperature of the air-conditioning target room,
The precise temperature / humidity adjustment method characterized by controlling the said air blower based on the humidity of the said air-conditioning object room. The refrigerant pipe is provided with a first evaporator, a second evaporator, a first condenser, a second condenser, the compressor, a proportional valve, and a pair of expansion valves;
The first evaporator and the second evaporator are provided in series, the first condenser and the second condenser are provided in series,
Providing the compressor between the first evaporator and the second evaporator and between the first condenser and the second condenser;
Providing the proportional valve between the compressor and the first condenser; providing the proportional valve between the compressor and the second condenser;
Providing the expansion valve between the first condenser and the first evaporator, and providing the expansion valve between the second condenser and the second evaporator;
2. The precise temperature and humidity adjustment method according to claim 1, wherein the first evaporator and the second condenser are provided in the outside-air-air merging duct, and the blower is provided on the downstream side of the second condenser. . An evaporator, an electric heater, and a blower are installed in the outside air / inside air merging duct that connects the inside air circulation duct and the outside air intake duct connected to the air-conditioning target room and joins the outside air to the inside air, and is connected to the downstream side of the blower. Installing a humidifier in the air supply duct that supplies air to the air-conditioned room,
In a method of connecting a heat pump refrigerator to the evaporator and controlling the electric heater based on the temperature of the air-conditioning target room,
The precise temperature / humidity adjustment method characterized by controlling the said air blower based on the humidity of the said air-conditioning object room.   The precise temperature / humidity adjustment method according to any one of claims 1 to 3, wherein the rotational speed of the blower is controlled based on the humidity.   The precise temperature / humidity adjustment method according to any one of claims 1 to 4, wherein the compressor is controlled based on the humidity.   The precise temperature / humidity adjustment method according to claim 5, wherein the rotational speed of the compressor is controlled based on the humidity.   The precise temperature / humidity adjustment method according to claim 1, wherein a second blower is provided in a branch duct from the inside air circulation duct.   The precise temperature / humidity adjusting method according to claim 1, wherein a constant air volume device is provided in the outside air intake duct.